.TITLE YMDRIVER : RK11/RK05 HANDLER FOR THE VAX .IDENT /MIT IV/ .LIST MEB .SBTTL TITLE PAGE ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; AUTHOR : A. HERMES. III MIT BATES LINEAR ACCELERATOR ; ; DATE : X/XX/MCMLXXVIII ; ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! .PAGE .SBTTL RK11/RK05 SYSGEN INPUTS FOR INSTALLING HANDLER ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; INTERRUPT VECTOR FOR THE YM: %O220 ; CSR ADDRESS FOR THE YM: %O17404 ; ; SYSGEN COMMAND FILE : ; ; $ RUN SYS$SYSTEM:SYSGEN ; LOAD DM0:YMDRIVER.EXE ; CONNECT YMA0/ADAPTER=3/VECTOR=%O220/CSR=%O17400 ; CONNECT YMA1/ADAPTER=3/VECTOR=%O220/CSR=%O17400 ; SHOW /DEVICE ; EXIT ; ; TYPE TO THE MONITOR : ; ; $ @SYSGEN ; ; THIS WILL FACILITATE THE IMPLEMENTING OF THE DRIVER WITHOUT ; UNDUE TYPING ERRORS. ; ; ; THE DRIVER MAY ALSO BE INSTALLED IN THE [10,40]STARTUP.COM, ; AFTER THE RUN SYS$SYSTEM:SYSGEN, SO THAT IT IS AUTOMATICALLY ; INSTALLED AFTER EACH REBOOT. ; ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! .PAGE .SBTTL RK11/RK05 DISK DRIVE TYPE AND CONTROLLER ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; THE DISK DRIVE IS A PERTEC RK11 DRIVE THAT IS COMPATABLE WITH THE ; DEC RK11 DISK DRIVES. ; ; ; THE DRIVES AND CONTROLLER WERE OBTAINED FROM: ; ; XYLOGIC, INC ; BURLINGTON,MASS ; ; THERE ARE SOME DIFFERENCES : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! .PAGE .SBTTL RK11/RK05 SYSTEM MACRO LIBRARY CALLS ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; MACRO LIBRARY CALLS : SYSTEM DEFINITIONS ; ; THESE DEFINITIONS ARE FOUND IN THE LIBRARY [1,1]LIB.MLB ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! $DCDEF ;DEFINE DEVICE TYPES AND CLASSES $ADPDEF ;DEFINE ADP OFFSETS $CRBDEF ;DEFINE CRB OFFSETS $DDBDEF ;DEFINE DDB OFFSETS $DPTDEF ;DEFINE DPT OFFSETS $EMBDEF ;DEFINE EMB OFFSETS $IDBDEF ;DEFINE IDB OFFSETS $IODEF ;DEFINE I/O FUNCTION CODES $IRPDEF ;DEFINE IRP OFFSETS $UBADEF ;DEFINE UBA REGISTER OFFSETS $UCBDEF ;DEFINE UCB OFFSETS $VECDEF ;DEFINE INTERRUPT DISPATCH VECTOR OFFSETS .PAGE .SBTTL RK11/RK05 EXECUTE MACRO FOR THE RK05 ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; ; EXECUTE FUNCTION AND BRANCH ON RETRIABLE ERROR CONDITION : ; ; THIS MACRO IS USED IN CONJUNCTION WITH THE HARDWARE FUNCTION ; CODES OF THE RK11/RK05. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! .MACRO EXFUNCH BDST,FCODE .IF NB FCODE MOVZBL #CD'FCODE,R3 .ENDC BSBW FEXH .BYTE BDST-.-1 .ENDM .MACRO EXFUNCL BDST,FCODE .IF NB FCODE MOVZBL #CD'FCODE,R3 .ENDC BSBW FEXL .BYTE BDST-.-1 .ENDM .PAGE .SBTTL RK11/RK05 FUNCTION TABLE ( FTAB ) ENTRY MACRO ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; GENERATE FUNCTION TABLE ENTRY : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! .MACRO GENF FCODE CD'FCODE=.-FTAB/2 .WORD FCODE!YM_CS_M_GO!YM_CS_M_IDE .ENDM .PAGE .SBTTL RK11/RK05 REGISTER DEFINITIONS ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; REFERENCES : ; ; RK11/RK05 REGISTER OFFSETS : ; ; 1] PERIPHERALS HANDBOOD FOR THE PDP-11 : PAGES 4-314, 4-325 ; ; 2] RK11-D AND RK11-E MOVING HEAD DISK DRIVE CONTROLLER MANUAL : ; CHAPTER 3 : PAGES 3-1, 3-10 ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; BIT POSITIONS FOR THE RK11/RK05 DEVICE REGISTERS : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! $DEFINI YM ;RK05 IS A YM ON THE VAX ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; ;DS DRIVE STATUS REGISTER (RKDS) : R/O : ADDRESS = 777400 ; ; CONTAINS THE CURRENT SELECTED DRIVE STATUS AND THE CURRENT ; SECTOR ADDRESS : ; ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! $DEF YM_DS .BLKW 1 ; DRIVE STATUS REGISTER _VIELD YM_DS,0,<- ; DRIVE STATUS REGISTER FIELD DEFINITIONS ,- ; [0-3] SECTOR COUNTER: 4 BITS WIDE ,- ; [4] SECTOR ADDRESS FROM RKDA ,- ; [5] WRITE PROTECT STATUS ,- ; [6] R/W/SEEK READY ,- ; [7] DRIVE READY ,- ; [8] SECTOR COUNTER OK ,- ; [9] SEEK INCOMPLETE ,- ; [10] DRIVE UNSAFE ,- ; [11] ID BIT : ALWAYS SET ,- ; [12] DRIVE POWER LOW ,- ; [13-15] ID OF DRV THAT SET INT > ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ;ER RK ERROR REGISTER (RKER) : R/O ALL BITS : ADDRESS = 777402 ; ; NOTE : BITS 5 THRU 15 ARE ALL HARD ERRORS. ; THEY ARE CLEARED ONLY BY A BUS INIT OR A CONTROL ; CLEAR FUNCTION. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! $DEF YM_ER .BLKW 1 ;ERROR REGISTER _VIELD YM_ER,0,<- ; ERROR REGISTER BIT DEFINITIONS ,- ; [0] WRITE CHECK ERROR ,- ; [1] CHECKSUM ERROR ,- ; [2] UNUSED ,- ; [3] SEC WRT PROT VIO ,- ; [4] SPARE BIT ,- ; [5] NONEXISTENT SECTOR ,- ; [6] NONEXISTENT CYCLINDER ,- ; [7] NONEXISTENT DISK ,- ; [8] READ TIMING ERROR ,- ; [9] DATA LATE ,- ; [10] NONEXISTENT MEMORY ,- ; [11] PROGAMMING ERROR ,- ; [12] SEEK ERROR ,- ; [13] WRITE LOCK OUT VIOLATION ,- ; [14] OVERRUN ,- ; [15] DRIVE ERROR > ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ;CS CONTROL AND STATUS REGISTER (RKCS) : ADDRESS = 777404 ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! $DEF YM_CS .BLKW 1 ;CONTROL STATUS REGISTER _VIELD YM_CS,0,<- ; CONTROL STATUS REGISTER FIELD DEFINITIONS ,- ; [0] GO BIT : WRITE ONLY BIT ,- ; [1-3] FUNCTION CODE : ,- ; [4-5] MEM EXTEN BITS : R/W ,- ; [6] INTERRUPT ON DONE ENABLE ,- ; [7] CONTROLLER READY : R/O ,- ; [8] STOP ON SOFT ERROR : R/W ,- ; [9] SECTOR WRITE PROTECT CNTL ,- ; [10] FORMAT : R/W ,- ; [11] INH INC OF RKBA : R/W ,- ; [12] MAINTENANCE MODE : R/W ,- ; [13] SEARCH COMPLETE : R/O ,- ; [14] HARD ERROR : R/O ,- ; [15] ERROR : RKER : R/O > ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ;WC WORD COUNT REGISTER (RKWC) : ADDRESS = 777406 ; ; CONTAINS THE TWO'S COMPLEMENT OF THE TOTAL NUMBER OF ; WORDS TO BE AFFECTED BY A GIVEN FUNCTION. ; IT INCREMENTS BY ONE AFTER EACH WORD TRANSFER. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! $DEF YM_WC .BLKW 1 ;WORD COUNT REGISTER ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ;BA CURRENT BUS ADDRESS REGISTER (RKBA) : ADDRESS = 777410 ; ; CONTAINS THE BUS ADDRESS TO OR FROM WHICH DATA WILL BE ; TRANSFERRED. ; THE REGISTER IS INCREMENTED BY TWO AT THE END OF EACH ; TRANSFER. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! $DEF YM_BA .BLKW 1 ;BUS ADDRESS REGISTER ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ;DA DISK ADDRESS REGISTER (RKDA) : ADDRESS = 777412 ; ; ALL RKDA BITS ARE LOADED FROM THE BUS DATA LINES ONLY IN ; RK11 READY STATE, AND CLEARED BY BUS INIT AND CONTROL RESET. ; THE RKDA IS INCREMENTED AUTOMATICALLY AT THE END OF EACH ; DISK SECTOR. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! $DEF YM_DA .BLKW 1 ;DESIRED SECTOR/TRACK ADDRESS REGISTER _VIELD YM_DA,0,<- ; DESIRED ADDRESS FIELD DEFINITIONS ,- ; [0-3] DESIRED SECTOR ADDRESS ,- ; [4] SURFACE ,- ; [5-12] CYLINDER ADDRESS - ; [13-15] DRIVE SELECT > ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ;DB DATA BUFFER REGISTER (RKDB) : ADDRESS = 777416 ; ; THIS REGISTER IS THE GENERAL DATA HANDLER. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! $DEF YM_DB .BLKW 1 ; DATA BUFFER REGISTER ; ; $DEFEND YM ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; THERE ARE NO OFFSETS OR ECC IN THE RK05 DISK DRIVE : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; SOFTWARE STATUS IN UPPER BYTE OF OFFSET WORD ; _VIELD YM,0,<- ;SOFTWARE STATUS BIT DEFINITIONS ,- ; ECC INHIBIT - ; DATACHECK IN PROGRESS > .PAGE .SBTTL RK11/RK05 DEFINE DEVICE DEPENDENT UCB OFFSETS ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; DEFINE DEVICE DEPENDENT UCB OFFSETS : ; ; UNIT CONTROL BLOCK ( UCB ) : DEFINES THE CHARACTERISTICS AND CURRENT ; STATE OF AN INDIVIDUAL DEVICE UNIT. ; ; THE UCB BLOCK DESCRIBES OR PROVIDES POINTERS TO THE DEVICE TYPE, ; CONTROLLER, DRIVER, DEVICE STATUS, AND CURRENT I/O ACTIVITY. ; ; THE CONNECT COMMAND TO SYSGEN CREATES UCB'S OF THE LENGTH SPEC- ; IFIED IN THE DRIVER PROLOGUE TABLE OF THE DEVICE'S DRIVER. ; ; ; THE DRIVER USES UCB STORAGE LOCATED BEYOND THE STANDARD UCB FIELDS ; FOR THE DEVICE SPECIFIC DATA AND TEMPORARY STORAGE. THIS DRIVER ; USES STORAGE BEGINNING AT UCB$W_BCR+2. ; ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! $DEFINI UCB .=UCB$W_BCR+2 ; $DEF UCB$W_YM_DS .BLKW 1 ;DRIVE STATUS REGISTER $DEF UCB$W_YM_ER .BLKW 1 ;ERROR REGISTER $DEF UCB$W_YM_CS .BLKW 1 ;CONTROL STATUS REGISTER $DEF UCB$W_YM_WC .BLKW 1 ;WORD COUNT REGISTER $DEF UCB$W_YM_BA .BLKW 1 ;BUS ADDRESS REGISTER $DEF UCB$W_YM_DA .BLKW 1 ;DISK ADDRESS REGISTER $DEF UCB$W_YM_DB .BLKW 1 ;DATA BUFFER REGISTER $DEF UCB$W_YM_DPN .BLKW 1 ;DATAPATH NUMBER $DEF UCB$L_YM_DPR .BLKL 1 ;DATAPATH REGISTER $DEF UCB$L_YM_FMPR .BLKL 1 ;FINAL MAP REGISTER $DEF UCB$L_YM_PMPR .BLKL 1 ;PREVIOUS MAP REGISTER ; .BLKW 1 ;SPARE USED WORD $DEFEND UCB .PAGE .SBTTL RK11/RK05 HARDWARE FUNCTION CODES FOR THE RK05 ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; HARDWARE FUNCTION CODES : ; ; ; THE RK11/RK05 HAS ONLY 8 FUNCTION CODES : ; ; THE FOLLOWING FUNCTIONS ARE THE CODES FOR BITS 0-3 OF THE CSR, ; AND ARE THE ONLY FUNCTION CODES FOR THE RK05 DEVICE. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; BIT3 BIT2 BIT1 OPERATION ; ; 0 0 0 CONTROL RESET ; 0 0 1 WRITE ; 0 1 0 READ ; 0 1 1 WRITE CHECK ; 1 0 0 SEEK ; 1 0 1 READ CHECK ; 1 1 0 DRIVE RESET ; 1 1 1 WRITE LOCK ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; HARDWARE FUNCTION CODES DEFINED AND RENAMED FOR THE VAX : ; ; CONTROL RESET = INITIALIZES ALL INTERNAL REGISTERS AND FLIP- ; FLOPS, AND CLEARS ALL OF THE BITS OF THE SEVEN PROGRAMMABLE ; REGISTERS, EXCEPT RKCS 07 (READY) WHICH IT SETS, AND RKDS ; 01 THRU 11, WHICH ARE NOT AFFECTED. ; ; CONTROL RESET = DRIVE CLEAR ( FOR THE VAX ) ; ; DRIVE RESET = FOR A DRIVE RESET FUNCTION, THE CONTROLLER DIRECTS ; THE SELECTED DISK DRIVE TO MOVE ITS HEAD MECHANISM TO CYLINDER ; 000 AND RESET ALL ACTIVE ERROR STATUS LINES. ; ; DRIVE RESET = RECALIBRATE DRIVE ( FOR THE VAX ) ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; FUTURE IMPLEMENTATION : TO ALLOW THE RK11/RK05 TO READ AND WRITE ; HEADERS. ; ; WRITEHEAD = FORMAT BIT (CSR 10) + WRITE BIT (CSR 1) OR'D WITH THE ; GO, SSE AND IE FROM THE GENF MACRO : ^X443 ; ; MOVW #CDF_WRITEHEAD!YM_CS_M_FMT,YM_CS ;WRITE HEADER FUNCTION ; ;OR MOVW #^X443,YM_CS(R4) ; ; READHEAD = FORMAT BIT (CSR 10) + READ BIT (CSR 2) OR'D WITH THE ; GO, SSE AND IE FROM THE GENF MACRO : ^X445 ; ; MOVW #CDF_READHEAD!YM_CS_M_FMT,YM_CS ;READ HEADER FUNCTION ; ;OR MOVW #^X445,YM_CS(R4) ; ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; HARDWARE FUNCTION CODES DEFINED : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! F_WRTLOC = ^X7*2 ; WRITE LOCK F_SEEK = ^X4*2 ; SEEK CYLINDER F_RECAL = ^X6*2 ; RECAL DRIVE = DRIVE RESET F_DRVCLR = ^X0*2 ; DRIVE CLEAR = CONTROL RESET F_WRITECHECK = ^X3*2 ; WRITE CHECK DATA F_WRITEDATA = ^X1*2 ; WRITE DATA F_READCHECK = ^X5*2 ; READ CHECK F_READDATA = ^X2*2 ; READ DATA F_WRITEHEAD = ^X1*2!YM_CS_M_FMT ; WRITE HEADER FUNCTION F_READHEAD = ^X2*2!YM_CS_M_FMT ; READ HEADER FUNCTION .PAGE .SBTTL RK11/RK05 DRIVER PROLOGUE TABLE FOR THE RK05 ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; DRIVER PROLOGUE TABLE : ( DPT ) ; ; THE DPT DESCRIBES THE DEVICE TYPE, DRIVER NAME, AND FIELDS IN THE ; I/O DATA BASE THAT ARE TO BE INITIALIZED DURING DRIVER LOADING ; AND RELOADING. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; SINCE THERE IS NO DEVICE TYPE FOR THE RK05 IN THE $DCDEF MACRO ; THE RK05 IS DEFINED TO BE A SUPPORTED DEVICE ON THE VAX. ; DT$_RK05=DT$_RP04 ;VMS THINKS YM IS AN RP04 ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DPTAB - ;DEFINE DPT END=YM_END,- ;END OF DRIVER ADAPTER=UBA,- ;ADAPTER TYPE FLAGS=DPT$M_SVP,- ;SYSTEM PAGE TABLE ENTRY REQUIRED UCBSIZE=200,- ;UCB SIZE NAME=RKDRIVER ;DRIVER NAME ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DPT_STORE INIT ;CONTROL BLOCK INIT VALUES ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DPT_STORE DDB,DDB$L_ACPD,L,<^A\F11\> ;DEFAULT ACP NAME DPT_STORE DDB,DDB$L_ACPD+3,B,3 ;ACP CLASS DPT_STORE UCB,UCB$B_FIPL,B,8 ;FORK IPL DPT_STORE UCB,UCB$L_DEVCHAR,L,- ;DEVICE CHARACTERISTICS ; RANDOM ACCESS DPT_STORE UCB,UCB$B_DEVCLASS,B,DC$_DISK ;DEVICE CLASS DPT_STORE UCB,UCB$W_DEVBUFSIZ,W,512 ;DEFAULT BUFFER SIZE DPT_STORE UCB,UCB$B_SECTORS,B,12 ;NUMBER OF SECTORS PER TRACK DPT_STORE UCB,UCB$B_TRACKS,B,2 ;NUMBER OF TRACKS PER CYLINDER DPT_STORE UCB,UCB$W_CYLINDERS,W,200 ;NUMBER OF CYLINDERS : RK05 DPT_STORE UCB,UCB$L_MAXBLOCK,L,<200*2*12> ;MAXIMUM BLOCK NUMBER : RK05 DPT_STORE UCB,UCB$B_DEVTYPE,B,DT$_RK05 ;TENTATIVE DEVICE TYPE DPT_STORE UCB,UCB$B_DIPL,B,21 ;DEVICE IPL DPT_STORE UCB,UCB$B_ERTCNT,B,8 ;ERROR RETRY COUNT DPT_STORE UCB,UCB$B_ERTMAX,B,8 ;MAX ERROR RETRY COUNT ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DPT_STORE REINIT ;CONTROL BLOCK RE-INIT VALUES ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DPT_STORE CRB,CRB$L_INTD+4,D,YM$INT ;ISR ADDRESS DPT_STORE CRB,CRB$L_INTD+VEC$L_INITIAL,D,YM_RK11_INIT ;CONTROLLER INIT DPT_STORE CRB,CRB$L_INTD+VEC$L_UNITINIT,D,YM_RK05_INIT ;UNIT INIT DPT_STORE DDB,DDB$L_DDT,D,RK$DDT ;DDT ADDRESS DPT_STORE END ; .PAGE .SBTTL RK11/RK05 DRIVER DISPATCH TABLE FOR THE RK05 ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; DRIVER DISPATCH TABLE : ( DDT ) ; ; THE DDT LISTS THE ENTRY POINTS FOR DRIVER SUBROUTINES TO BE CALLED ; BY THE OPERATING SYSTEM TO PROCESS I/O. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DDTAB RK,- ;DRIVER DISPATCH TABLE YM_STARTIO,- ;START I/O OPERATION YM_UNSOLNT,- ;UNSOLICITED INTERRUPT YM_FUNCTABLE,- ;FUNCTION DECISION TABLE 0,- ;CANCEL I/O ENTRY POINT YM_REGDUMP,- ;REGISTER DUMP ROUTINE <11*4>,- ;DIAGNOSTIC BUFFER SIZE <<11*4>+> ;SIZE OF ERROR BUFFER .PAGE .SBTTL RK11/RK05 HARDWARE I/O FUNCTION CODE TABLE ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; HARDWARE I/O FUNCTION CODE TABLE : ; ; THIS TABLE IS GENERATED VIA THE GENF MACRO. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! FTAB: ; DEFINE FNCT TBLE GENF F_WRTLOC ; WRITE LOCK GENF F_SEEK ; SEEK CYLINDER GENF F_RECAL ; RECALIBRATE GENF F_DRVCLR ; DRIVE CLEAR GENF F_WRITECHECK ; WRITE CHECK GENF F_WRITEDATA ; WRITE DATA GENF F_READCHECK ; READ CHECK GENF F_READDATA ; READ DATA GENF F_WRITEHEAD ; WRITE HEADERS GENF F_READHEAD ; READ HEADER .PAGE .SBTTL RK11/RK05 FUNCTION DECISION TABLE ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; RK11/RK05 FUNCTION DECISION TABLE ( FDT ) : VAX RK05 DRIVER ; ; THE FDT LISTS CODES FOR I/O FUNCTIONS THAT ARE VALID FOR THE DEVICE, ; AND INDICATES WHETHER THE FUNCTIONS ARE BUFFERED AND SPECIFIES SUB- ; ROUTINES TO PREFORM PREPROCESSING FOR PARTICULAR FUNCTIONS. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! IO$_WRTLOC =IO$_REWIND YM_FUNCTABLE: ;FUNCTION DECISION TABLE FUNCTAB ,- ;LEGAL FUNCTIONS ;MOUNT VOLUME FUNCTAB ,- ;BUFFERED I/O FUNCTIONS ;MOUNT VOLUME FUNCTAB YM_ALIGN,- ;TEST ALIGNMENT FUNCTIONS ;WRITE VIRTUAL BLOCK FUNCTAB +ACP$READBLK,- ;READ FUNCTIONS ;READ VIRTUAL BLOCK FUNCTAB +ACP$WRITEBLK,- ;WRITE FUNCTIONS ;WRITE VIRTUAL BLOCK FUNCTAB +ACP$ACCESS, ;ACCESS AND CREATE FILE OR DIRECTORY FUNCTAB +ACP$DEACCESS, ;DEACCESS FILE FUNCTAB +ACP$MODIFY,- ; ;MODIFY FILE ATTRIBUTES FUNCTAB +ACP$MOUNT, ;MOUNT VOLUME FUNCTAB +EXE$ZEROPARM,- ;ZERO PARAMETER FUNCTIONS ; DRIVE CLEAR FUNCTAB +EXE$ONEPARM,- ;ONE PARAMETER FUNCTIONS ;RECALIBRATE FUNCTAB +EXE$SENSEMODE,- ; ;SENSE MODE FUNCTAB +EXE$SETCHAR,- ; ;SET MODE .PAGE .SBTTL RK11/RK05 TEST ALIGNMENT OF BUFFER ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; ; YM_ALIGN - TEST CONDITION OF ODD/EVEN TRANSFER BYTE COUNT ; ; THIS ROUTINE IS CALLED FROM THE FUNCTION DECISION TABLE ( FDT ) DISPATCHER TO ; DETERMINE IF THE SPECIFIED TRANSFER COUNT IS ODD OR EVEN, WITH THE RESULT ; OF ACCEPTING ONLY THOSE QIO'S WITH AN EVEN TRANSFER BYTE COUNT. ; ; INPUTS: ; ; R0 = SCRATCH. ; R1 = SCRATCH. ; R2 = SCRATCH. ; R3 = ADDRESS OF I/O REQUEST PACKET (IRP) ; R4 = CURRENT PROCESS PCB ADDRESS. ; R5 = ASSIGNED DEVICE UCB ADDRESS. ; R6 = ADDRESS OF CCB. ; R7 = BIT NUMBER OF THE I/O FUNCTION CODE ; R8 = FUNCTION DECISION TABLE ( FDT ) DISPATCH ADDRESS. ; R9 = SCRATCH. ; R10 = SCRATCH. ; R11 = SCRATCH. ; AP = ADDRESS OF FIRST FUNCTION DEPENDENT PARAMETER. ; ; OUTPUTS: ; ; IF THE BYTE COUNT FOR THE TRANSFER IS NOT EVEN, THEN THE I/O OPER- ; ATION IS ABORTED WITH AN ERROR. ; ; OTHERWISE, A RETURN TO THE FDT DISPATCHER IS EXECUTED. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! YM_ALIGN: ; CHECK IF BYTE COUNT IS EVEN BBS #0,4(AP),10$ ;IF SET, ODD BYTE COUNT RSB ; RETURN TO FDT DISPATCHER 10$: MOVZWL #SS$_BUFBYTALI,R0 ;SET BUFFER ALIGNMENT STATUS JMP G^EXE$ABORTIO ; ABORT I/O .PAGE .SBTTL RK11/RK05 START I/O OPERATION ON THE RK05 ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; YM_STARTIO - START I/O OPERATION ON DEVICE UNIT ; ; THIS ENTRY POINT IS ENTERED TO START AN I/O OPERATION ON A DEVICE UNIT. ; ; INPUTS: ; ; R3 = ADDRESS OF I/O PACKET. ( IRP ) ; R5 = UCB ADDRESS OF DEVICE UNIT. ; ; OUTPUTS: ; ; FUNCTION DEPENDENT PARAMETERS ARE STORED IN THE DEVICE UCB, THE ERROR ; RETRY COUNT IS RESET, AND THE FUNCTION IS EXECUTED. AT FUNCTION COMPLETION ; THE OPERATION IS TERMINATED THROUGH REQUEST COMPLETE. ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! YM_STARTIO: ;START I/O OPERATION MOVB UCB$B_ERTMAX(R5),UCB$B_ERTCNT(R5) ;INIT ERR RTRY CNT MOVW IRP$W_FUNC(R3),UCB$W_FUNC(R5) ;SAVE FUNCTION CODE MOVL IRP$L_MEDIA(R3),R0 ;GET PARAMETER LONGWORD ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; MOVE FUNCTION DEPENDENT PARAMETERS TO UCB ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 10$: EXTZV #IRP$V_FCODE,#IRP$S_FCODE,- ;EXTRACT I/O FUNCTION CODE IRP$W_FUNC(R3),R1 ; FUNCTION CODE IN R1 CMPB #IO$_SEEK,R1 ;SEEK FUNCTION? BEQL 20$ ;IF EQL YES MOVL R0,UCB$W_DA(R5) ;STORE PARAMETER LONGWORD BRB 50$ ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; SEEK FUNCTION - SET CYLINDER ADDRESS ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 20$: MOVW R0,UCB$W_DC(R5) ;SET CYLINDER ADDRESS 50$: MOVB R1,UCB$B_FEX(R5) ;SAVE FUNCTION DISPATCH INDEX BICW #UCB$M_ECC!- ;NO ECC, BUT CLEAR UCB$M_DIAGBUF,UCB$W_DEVSTS(R5) ;DIAGNOSTIC BUFFER PRESENT BBC #IRP$V_DIAGBUF,IRP$W_STS(R3),FDISPATCH ;IF CLR, NO BUFFER BISW #UCB$M_DIAGBUF,UCB$W_DEVSTS(R5) ;SET DIAGNOSTIC BUFF PRESENT ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; FDISPATCH: FUNCTION DISPATCHING DONE HERE : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! FDISPATCH: ;FUNCTION DISPATCHING MOVL UCB$L_IRP(R5),R3 ;RETRIEVE IRP ADDRESS BBS #IRP$V_PHYSIO,IRP$W_STS(R3),10$ ;IF SET, PHYSICAL I/O FUNCTION BBS #UCB$V_VALID,UCB$W_STS(R5),10$ ;IF SET, VOLUME SOFTWARE VALID MOVZWL #SS$_VOLINV,R0 ;SET VOLUME INVALID STATUS BRW RESETXFR ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; CHECK FOR IDENTITY OF FUNCTION : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 10$: MOVZBL UCB$B_FEX(R5),R3 ;GET FUNCTION CODE CMPB #IO$_SEEK,R3 ;A SEEK FUNCTION? BNEQ 20$ ;IF NEQ, IT'S NOT A SEEK EXFUNCH RETRY,F_SEEK ;OTHERWISE, GO AND DO THE SEEK BRW NORMAL ;IF HERE, NORMAL SUCCESS 20$: CMPB #IO$_RECAL,R3 ;A RECAL FUNCTION = DRV RESET? BNEQ 30$ ;IF NEQ, NO RECAL. EXFUNCH RETRY,F_RECAL ;OTHERWISE, RECALIBRATE DRIVE BRW NORMAL ;HERE FOR, NORMAL SUCCESS 30$: CMPB #IO$_DRVCLR,R3 ;A DRV CLR FUNC = DRV RESET? BNEQ 40$ ;IF NEQ, IT'S NOT A DVRCLR EXFUNCH RETRY,F_DRVCLR ;OTHERWISE, DRV CLR=CNTL RESET BRW NORMAL ;HERE FOR, NORMAL SUCCESS 40$: CMPB #IO$_REWIND,R3 ;A REWIND FNC = WRTLOC BNEQ 50$ ;IF NEQ, NO WRTLOC. EXFUNCH RETRY,F_WRTLOC ;OTHERWISE, EXE WRITE LOC FNC BRW NORMAL ;HERE FOR, NORMAL SUCCESS 50$: MOVB #CDF_WRITEDATA,UCB$B_CEX(R5) ;SET UP UCB CMPB #IO$_WRITEPBLK,R3 ;WRITE PHYSICAL? BEQL WRITEDATA ;WRITE THE DATA. MOVB #CDF_READDATA,UCB$B_CEX(R5) ;SET UP UCB CMPB #IO$_READPBLK,R3 ;READ PHYSICAL? BEQL READDATA ;READ THE DATA MOVB #CDF_WRITECHECK,UCB$B_CEX(R5) ;SET UP UCB CMPB #IO$_WRITECHECK,R3 ;WRITE CHECK? BEQL CLRDATCHK ; MOVB #CDF_WRITEHEAD,UCB$B_CEX(R5) ;SET UP UCB CMPB #IO$_WRITEHEAD,R3 ;WRITE HEADER FNC? BEQL CLRDATCHK ; MOVB #CDF_READHEAD,UCB$B_CEX(R5) ;SET UP UCB CMPB #IO$_READHEAD,R3 ;READ HEADER FNC BEQL CLRDATCHK ; CLRDATCHK: ;CLEAR DATA CHECK BICW #IO$M_DATACHECK,UCB$W_FUNC(R5) ;CLR DATA CHK RQST ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; WRITE DATA, WRITE CHECK DATA ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WRITEDATA: ;WRITE DATA ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; READ DATA, WRITE DATA, WRITE CHECK DATA ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! READDATA: ;READ DATA MOVB UCB$B_CEX(R5),UCB$B_FEX(R5) ;SAVE CEX FOR RECOVERY BBS #IO$V_INHSEEK,UCB$W_FUNC(R5),TRANSFR ;IF SET, NO EXPLICIT SEEK EXFUNCH RETRY,F_SEEK ;SEEK DESIRED CYLINDER ; ; DATA TRANSFER ; TRANSFR: ;DATA TRANSFER REQUEST CHANNEL MOVZBL UCB$B_FEX(R5),R3 ;GET FUNCTION DISPATCH INDEX EXFUNCL TRANXT ;EXECUTE TRANSFER FUNCTION ; ; DATA CHECK ; DATACHECK: ;DATA CHECK BBC #IO$V_DATACHECK,UCB$W_FUNC(R5),NORMAL ;IF CLR, NO DATA CHECK MOVL UCB$L_IRP(R5),R2 ;GET ADDRESS OF IRP MOVQ IRP$L_SVAPTE(R2),UCB$L_SVAPTE(R5) ;RESET TRANSFER PARAMETERS MOVL IRP$L_MEDIA(R2),UCB$W_DA(R5) ; ; ; DATA CHECK RETRY ; CHECKRETRY: ;DATA CHECK RETRY EXFUNCL TRANXT,F_WRITECHECK ;EXECUTE WRITECHECK FUNCTION ; ; SUCCESSFUL OPERATION COMPLETION ; NORMAL: ; MOVZWL S^#SS$_NORMAL,R0 ;SET NORMAL COMPLETION STATUS CHECKXT: ; BRW FUNCXT ; ; ; TRANSFER ENDED WITH A RETRIABLE ERROR ; TRANXT: ;TRANSFER EXIT CMPB #CDF_WRITEDATA,UCB$B_CEX(R5) ;WRITE DATA FUNCTION? BEQL RETRY ;IF EQL YES CMPB #CDF_WRITEHEAD,UCB$B_CEX(R5) ;WRITE HEADER FUNCTION? BEQL RETRY ;IF EQL YES BITW #YM_ER_M_DLT!- ;DATA LATE OR, YM_ER_M_CSE!- ;CHECKSUM ERROR OR, YM_ER_M_WCE,R3 ;WRITE CHECK ERROR? BEQL DRVR ;IF EQL YES RETRY: ; BRW RETRYERR ;RETRIABLE ERROR ; ; DRVR, DRIVE RESET OR RECAL ON ERRORS FROM TRANXT: FOR DPL!SIN ; DRVR: ;DRIVE RESET FOR SEEK INCOMPLETE MOVZWL UCB$W_BCR(R5),R0 ;GET NEGATIVE NUMBER OF BYTES REMAINING ADDW UCB$W_BCNT(R5),R0 ;CALCULATE NUMBER OF BYTES TRANSFERED MOVL R0,R1 ;COPY NUMBER OF BYTES TRANSFERED BEQL AXE ;IF EQL NONE - PERFORM OFFSET RECOVERY DECL R0 ;SET TO TRUNCATE LAST BLOCK TRANSFERED 10$: BICW #^X1FF,R0 ;TRUNCATE RESIDUAL BYTES TRANSFERED AXE: ;CHECK GOOD DATA TRANSFERRED TSTL R0 ;ANY GOOD DATA TRANSFERED? BEQL 40$ ;IF EQL NO ; ; ; THE TRANSFER ENDED IN AN ERROR BUT THERE WERE SECTORS TRANSFERED THAT ; CONTAINED GOOD DATA. SINCE THE ERROR COULD HAVE BEEN CAUSED BY A CYLIN- ; DER CROSSING, THE GOOD DATA IS SAVED AND THE TRANSFER IS RETRIED FROM THE ; POINT OF ERROR. ; ; JSB G^IOC$UPDATRANSP ;UPDATE TRANSFER PARAMETERS 40$: DECB UCB$B_ERTCNT(R5) ;A RETRIABLE ERROR? BEQL FATALERR ;ANY RETRIES LEFT? BBS #YM_V_DCK,UCB$W_OFFSET+1(R5),50$ ;IF SET, DATA CHECK FUNCTION BRW TRANSFR ;TRY FUNCTION AGAIN 50$: BRW CHECKRETRY ;TRY DATA CHECK AGAIN ; ; ; RETRIABLE ERROR ; RETRYERR: ;RETRIABLE ERROR DECB UCB$B_ERTCNT(R5) ;ANY RETRIES LEFT? BEQL FATALERR ;IF EQL NO BITW #YM_DS_M_SIN,R2 ;SEEK INCOMPLETE BEQL 10$ ;IF EQL NO EXFUNCH FATALERR,F_RECAL ;RECALIBRATE DRIVE 10$: BRW FDISPATCH ; ; ; FATAL CONTROLLER/DRIVE ERROR, ERROR RETRY COUNT EXHAUSTED, ERROR RETRY ; INHIBITED. : ; FATALERR: ;FATAL ERROR - SET STATUS MOVZWL #SS$_UNSAFE,R0 ;SET DRIVE UNSAFE STATUS BBS #YM_DS_V_DRU,R2,FUNCXT ;IF SET, DRIVE UNSAFE MOVZWL #SS$_DRVERR,R0 ;DRIVE ERROR STATUS BBS #YM_DS_V_SIN,R2,FUNCXT ;IF SET, SEEK INCOMPLETE MOVZWL #SS$_FORMAT,R0 ;SET FORMAT ERROR STATUS BITW #YM_ER_M_PGE,R3 ;PROGRAMMING ERROR BNEQ FUNCXT ;IF NEQ YES MOVZWL #SS$_WRITLCK,R0 ;SET WRITE LOCK ERROR BBS #YM_ER_V_WLO,R3,FUNCXT ;IF SET, WRITE LOCK ERROR MOVZWL #SS$_IVADDR,R0 ;SET INVALID DISK ADDRESS STATUS BITW #YM_ER_M_NXS!- ;INVALID SECTOR ADR OR, YM_ER_M_NXC,R3 ;INVALID CYL ADR ERROR? BNEQ FUNCXT ;IF NEQ YES MOVZWL #SS$_DATAOVERUN,R0 ;SET DATAOVERRUN ADR STATUS BBS #YM_ER_V_OVR,R3,FUNCXT ;DATA OVER RUN? MOVZWL #SS$_BADCHKSUM,R0 ;SET CHECKSUM ADR STATUS BBS #YM_ER_V_CSE,R3,FUNCXT ;IF SET CHKSUM ERROR MOVZWL #SS$_ILLCNTRFUNC,R0 ;SET SEEK ERROR STATUS BBS #YM_ER_V_SKE,R3,FUNCXT ;IF SET A SEEK ERROR MOVZWL #SS$_BADPARAM,R0 ;SET DRIVE TIMING ERROR BBS #YM_ER_V_TE,R3,FUNCXT ;IF SET A TIMING ERROR MOVZWL #SS$_DATACHECK,R0 ;SET DATA CHECK DSROR STATUS BBS #YM_ER_V_WCE,R3,FUNCXT ;IF SET, WRITE CHECK ERROR MOVZWL #SS$_NONEXDRV,R0 ;SET NONEXISTENT DRIVE STATUS BBS #YM_ER_V_NXD,R3,FUNCXT ;IF SET, NONEXISTENT DRIVE MOVZWL #SS$_CTRLERR,R0 ;SET CONTROLLER ERROR STATUS ; ; FUNCTION COMPLETION COMMON EXIT ; FUNCXT: ;FUNCTION EXIT PUSHL R0 ;SAVE FINAL REQUEST STATUS JSB G^IOC$DIAGBUFILL ;FILL DIAGNOSTIC BUFFER IF PRESENT CMPB #CDF_WRITECHECK,UCB$B_FEX(R5) ;DRIVE RELATED FUNCTION? BGTRU 10$ ;IF GTRU YES MOVL UCB$L_IRP(R5),R3 ;RETRIEVE ADDRESS OF IRP ADDW3 UCB$W_BCR(R5),IRP$W_BCNT(R3),2(SP) ;CALCULATE BYTES TRANSFERED 10$: CLRL R1 ;CLEAR SECOND STATUS LONGWORD POPL R0 ;RETRIEVE FINAL REQUEST STATUS REQCOM ;COMPLETE REQUEST .PAGE .SBTTL RK11/RK05 HARDWARE FUNCTION EXECUTION ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; FEXH - RK11/RK05 HARDWARE FUNCTION EXECUTION (HIGH PRIORITY) ; FEXL - RK11/RK05 HARDWARE FUNCTION EXECUTION (LOW PRIORITY) ; ; THIS ROUTINE IS CALLED VIA A BSB WITH A BYTE IMMEDIATELY FOLLOWING THAT ; SPECIFIES THE ADDRESS OF AN ERROR ROUTINE. ALL DATA IS ASSUMED TO HAVE BEEN ; SET UP IN THE UCB BEFORE THE CALL. THE APPROPRIATE PARAMETERS ARE LOADED ; INTO DEVICE REGISTERS AND THE FUNCTION IS INITIATED. THE RETURN ADDRESS ; IS STORED IN THE UCB AND A WAITFOR INTERRUPT IS EXECUTED. WHEN THE INTER- ; RUPT OCCURS, CONTROL IS RETURNED TO THE CALLER. ; ; INPUTS: ; ; R3 = FUNCTION TABLE DISPATCH INDEX. ; R4 = ADDRESS OF RK11 CSR. ; R5 = DEVICE UNIT UCB ADDRESS. ; ; 00(SP) = RETURN ADDRESS OF CALLER. ; 04(SP) = RETURN ADDRESS OF CALLER'S CALLER. ; ; IMMEDIATELY FOLLOWING INLINE AT THE CALL SITE IS A BYTE WHICH CONTAINS ; A BRANCH DESTINATION TO AN ERROR RETRY ROUTINE. ; ; OUTPUTS: ; ; THERE ARE FOUR EXITS FROM THIS ROUTINE: ; ; 1. SPECIAL CONDITION - THIS EXIT IS TAKEN IF A POWER FAILURE OCCURS ; OR THE OPERATION TIMES OUT. IT IS A JUMP TO THE APPROPRIATE ; ERROR ROUTINE. ; ; 2. FATAL ERROR - THIS EXIT IS TAKEN IF A FATAL CONTROLLER OR DRIVE ; ERROR OCCURS OR IF ANY ERROR OCCURS AND ERROR RETRY IS ; INHIBITED. IT IS A JUMP TO THE FATAL ERROR EXIT ROUTINE. ; ; 3. RETRIABLE ERROR - THIS EXIT IS TAKEN IF A RETRIABLE CONTROLLER ; OR DRIVE ERROR OCCURS AND ERROR RETRY IS NOT INHIBITED. ; IT CONSISTS OF TAKING THE ERROR BRANCH EXIT. ; ; 4. SUCCESSFUL OPERATION - THIS EXIT IS TAKEN IF NO ERROR OCCURS ; DURING THE OPERATION. IT CONSISTS OF A RETURN INLINE. ; ; IN ALL CASES IF AN ERROR OCCURS, AN ATTEMPT IS MADE TO LOG THE ERROR. ; ; IN ALL CASES FINAL DRIVE AND CONTROLLER REGISTERS ARE RETURNED VIA ; THE GENERAL REGISTERS R1, R2, AND R3, AND THE UCB. ; ; R1 = DISK STATUS REGISTER. ; R2 = ERROR REGISTER. ; R3 = YM CSR ; ; UCB$W_BCR(R5) = BYTE COUNT REGISTER. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! .ENABL LSB FEXH: ;FUNCTION EXECUTOR (HIGH PRIORITY) MOVAB G^IOC$REQPCHANH,R2 ;SET ADDRESS OF REQUEST CHANNEL ROUTINE BRB 10$ ; FEXL: ;FUNCTION EXECUTOR (LOW PRIORITY) MOVAB G^IOC$REQPCHANL,R2 ;SET ADDRESS OF REQUEST CHANNEL ROUTINE 10$: POPL UCB$L_DPC(R5) ;SAVE DRIVER PC VALUE JSB (R2) ;REQUEST CHANNEL ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; DEVICE UNIT FROM THE UCB MUST BE HANDLED IN A DIFFERENT WAY WITH ; THE RK11/RK05, THE ACTUAL UNIT MUST BE INSERTED VIA THE INSV ; INSTRUCTION IN THE XFER ROUTINE. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! MOVZWL UCB$W_UNIT(R5),R2 ;GET DEVICE UNIT NUMBER CMPB #CDF_SEEK,R3 ;A SEEK? BEQL POSIT ;SET POSITION CMPB #CDF_RECAL,R3 ;RECAL = DRIVE RESET? BEQL POSIT ;RECAL DRIVE CMPB #CDF_DRVCLR,R3 ;A CONTROLLER RESET? BEQL IMMED ;RESET CONTROLLER BRW XFER ;OTHERWISE A TRANSFER FUNCTION .DSABL LSB ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; IMMED: - IMMEDIATE FUNCTION EXECUTION ; ; FUNCTION FOR IMMEDIATE EXECUTION IS: ; ; DRIVE CLEAR = CONTROL RESET ; ; ; 1] INTERRUPTS ARE DISABLED ; 2] CHECK FOR POWER FAIL ; 3] GET THE UNIT THAT SET THE INTERRUPT FROM R2 ; 4] PUT SELECTED UNIT INTO THE DISK ADDRESS REGISTER ; 5] EXECUTE THE DRIVE CLEAR FUNCTION ; 6] WAIT FOR INTERRUPT AND KEEP CHANNEL OR TIMEOUT ; A) IF TIMEOUT : ; LOWER TO FORK IPL AND RELEASE CHANNEL ; B) IF INTERRUPT: ; EXECUTE AN IOFORK AND RELEASE CHANNEL ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! IMMED: ;IMMEDIATE FUNCTION EXECUTION DSBINT ;DISABLE INTERRUPTS BBC #UCB$V_POWER,UCB$W_STS(R5),5$ ;IF CLR, POWER HAS NOT FAILED BRW ENBXIT ;EXIT 5$: CLRL R1 ;CLEAR R1 FOR UNIT SEL INSV ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; GET THE UNIT THAT SET THE INTERRUPT : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! INSV R2,- ; R2 HAS UNIT NUMBER #YM_DA_V_DRSEL,- #YM_DA_S_DRSEL,- R1 ;FEED R1 TO YM_DA ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; GIVE SELECTED UNIT TO YM_DA : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! MOVW R1,YM_DA(R4) ;SET UNIT NUMBER ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; NOW EXECUTE THE FUNCTION : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! MOVW FTAB[R3],YM_CS(R4) ;EXECUTE FUNCTION ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; WAIT FOR INTERRUPT OR TIME OUT AND KEEP CHANNEL : ; 1] IF TIMEOUT : RESTORE IPL TO FORK IPL ; AND RELEASE CHANNEL ; 2] IF INTERRUPT : BRW TO IOFORK ; AND RELEASE CHANNEL ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WFIKPCH 11$,#6 ;WAITFOR INTERRUPT ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; IF INTERRUPT OCCURRED BEFORE TIMEOUT : ; ; JUMP TO INTERRUPT RESPONSE ROUNTINE : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! BRW 9$ ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; IF DEVICE TIMES OUT : LOWER IPL TO FORK IPL ; AND RELEASE CHANNEL ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 11$: SETIPL UCB$B_FIPL ;ON TIMEOUT, LOWER IPL BRW RLSCHN ;NOW GO AND RELEASE CHANNEL ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; DO THE IOFORK AFTER RETURN FROM THE ISR : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 9$: IOFORK ;CREATE FORK PROCESS BRW RLSCHN ; RELEASE CHANNEL ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; POSIT: - POSITIONING FUNCTION EXECUTION ; ; FUNCTIONS INCLUDE: ; ; SEEK CYLINDER, ; RECALIBRATE DRIVE = DRIVE RESET ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! POSIT: ;POSITIONING FUNCTION DSBINT ;DISABLE INTERRUPTS BBS #UCB$V_POWER,UCB$W_STS(R5),ENBXIT ;IF SET, POWER HAS FAILED ; ; CLEAR R1 FOR THE SEEK FUNCTION INSV : ; CLRL R1 ;CLR R1 FOR INSV ; ; GET DESIRED CYLINDER FROM THE UCB AND INSV INTO R1 : ; INSV UCB$W_DC(R5),- #YM_DA_V_CYLADR,- #YM_DA_S_CYLADR,- R1 ; ; GET UNIT THAT SET INTERRUPT FROM R2 INTO R1 : ; INSV R2,- ; R2 HAS THE UNIT NUMBER #YM_DA_V_DRSEL,- #YM_DA_S_DRSEL,- R1 ; ; GIVE RK11 THE DISK ADDRESS : ; MOVW R1,YM_DA(R4) ;MOVE TO DISK ADR REG ; ; NOW EXECUTE THE FUNCTION : SEEK OR RECAL : ; MOVW FTAB[R3],YM_CS(R4) ;EXECUTE FUNCTION WFIRLCH 13$,#6 ;WAITFOR INTERRUPT BRW 19$ ;IF NOT TIMEOUT 13$: SETIPL UCB$B_FIPL ;ON TIMEOUT, LOWER TO FORK IPL BRW RETREG ;THEN GO TO RETREG ; IF INTERRUPT, CONTINUE 19$: DSBINT ;DISABLE INTERRUPTS BBS #UCB$V_POWER,UCB$W_STS(R5),10$ ;IF SET, POWER FAILURE BITW #YM_DS_M_DRY,YM_DS(R4) ;DRIVE READY? BNEQ 10$ ;IF NEQ YES WFIKPCH 17$,#6 ;WAITFOR INTERRUPT BRW 23$ ;IF NOT TIMEOUT 17$: SETIPL UCB$B_FIPL ;IF TIMEOUT,LOWER IPL BRW RETREG ;AND GO TO RETREG 23$: BRB 20$ ; 10$: ENBINT ;ENABLE INTERRUPTS 20$: IOFORK ;CREATE FORK PROCESS BRW RETREG ; ENBXIT: ; ENBINT ; BRW RLSCHN ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; XFER: - TRANSFER FUNCTION EXECUTION ; ; FUNCTIONS INCLUDE: ; ; WRITE CHECK, ; WRITE DATA, ; WRITE HEADERS, ; READ DATA, AND ; READ HEADER. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! XFER: ;TRANSFER FUNCTION EXECUTION ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; SET SBI = UNIBUS ;SET UP UNIBUS ; ; SET UP I/O TRANSFER BY REQUESTING A DATAPATH AND UBA MAP ; REGISTERS AND LOADING THE UBA MAP REGISTERS. ; ; THE ABOVE ACTIONS CLOBBER R2, SO THAT, THE UNIT NUMBER ; HAS TO BE GOTTEN FROM THE UCB IN SETTING UP THE DISK ; ADDRESS REGISTER. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! REQDPR ;REQUEST DATAPATH REQMPR ;REQUEST MAP REGISTERS LOADUBA ;LOAD UNIBUS MAP REGISTERS ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; SET UP YM_WC : ; ; ; CALCULATE THE WORD COUNT OF THE TRANSFER : ; ; ; 1] GET TRANSFER BYTE COUNT FROM UCB ; 2] CONVERT TRANSFER BYTE COUNT TO WORDS ; 3] DISABLE INTERRUPTS BY SETTING DEVICE IPL ; 4] LOAD NEGATIVE TRANSFER COUNT INTO THE WORD COUNT REGISTER ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! MOVZWL UCB$W_BCNT(R5),R0 ;SET TRANSFER BYTE COUNT DIVL #2,R0 ;CONVERT TO WORDS DSBINT UCB$B_DIPL(R5) ;SET DEVICE IPL MNEGW R0,YM_WC(R4) ;SET TRANSFER WORD COUNT ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; SET UP YM_BA : ; ; ; CALCULATE UNIBUS START ADDRESS OF THE TRANSFER : ; ; 1] PUT BYTE OFFSET OF THE TRANSFER, FROM THE UCB, INTO ; FIRST PAGE OF THE TRANSFER BUFFER ; 2] GET ADDRESS OF CRB TO GET INTERRUPT TRANSFER VECTOR, ; WHICH IS THE ADDRESS OF THE YM INTERRUPT SERVICE ; ROUTINE. ; 3] PUT STARTING MAP REGISTER NUMBER INTO HIGH BITS OF ; UNIBUS START ADDRESS : ; CRB$L_INTD = INTERRUPT TRANSFER VECTOR ; VEC$W_MAPREG = NUMBER OF THE FIRST UBA ; MAP REGISTER ALLOCATED TO THE DRIVER THAT OWNS THE CONTROL- ; LER DATA CHANNEL. ; 4] STORE LOW 16 BITS IN THE YM_BA REGISTER ; 5] GET MEMORY EXTENSION BITS FROM THE CRB ; 6] SHIFT LEFT 4 BITS TO POSITION MEMORY EXTENSION BITS ; 7] SET FUNCTION CODE WITH MEMORY EXTENSION BITS ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! MOVZWL UCB$W_BOFF(R5),R0 ;GET BYTE OFFSET IN PAGE MOVL UCB$L_CRB(R5),R1 ;GET ADDRESS OF CRB INSV CRB$L_INTD+VEC$W_MAPREG(R1),#9,#7,R0 ;INSERT HIGH 7 BITS OF ADDRESS MOVW R0,YM_BA(R4) ;SET BUFFER ADDRESS EXTZV #7,#2,CRB$L_INTD+VEC$W_MAPREG(R1),R0 ;GET MEMORY EXTENSION BITS ASHL #4,R0,R0 ;SHIFT LEFT ONE BYTE BISW FTAB[R3],R0 ;MERGE FUNCTION CODE ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; SET UP YM_DA : ; ; 1] CLEAR R3 FOR INSV OF DISK ADDRESS ; 2] GET SECTOR ADDRESS FROM THE UCB AND PUT INTO R3 ; 3] GET SURFACE TO R3 FROM UCB OR BIT SET SURFACE ; 4] GET CYLINDER NUMBER FROM UCB AND INSV IT INTO R3 ; 5] GET UNIT NUMBER FROM THE UCB AND INSV IT INTO R3 ; 6] LOAD R3 INTO YM DISK ADDRESS REGISTER ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! CLRL R3 ;CLR R3 FOR INSV MOVZBL UCB$W_DA(R5),R3 ;MOVE SECTOR ADR INTO PLACE TSTB UCB$W_DA+1(R5) ;WHAT SURFACE? BEQL 11$ ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ;SURFACE NUMBER : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! BISW #YM_DA_M_SUR,R3 ;OTHERWISE, SET SURFACE NUMBER ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ;CYLINDER NUMBER : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 11$: INSV UCB$W_DC(R5),- #YM_DA_V_CYLADR,- #YM_DA_S_CYLADR,- R3 ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ;DRIVE THAT SET INTERRUPT : ; ; REQUEST DATAPATH REGISTERS CLOBBERS R2. THE DRIVE UNIT THAT ; SET THE INTERRUPT MUST BE OBTAINED FROM THE UCB FOR THE INSV. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! INSV UCB$W_UNIT(R5),- ;UCB HAS UNIT NUMBER #YM_DA_V_DRSEL,- #YM_DA_S_DRSEL,- R3 ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ;MOVE INTO DISK ADDRESS REGISTER : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! MOVW R3,YM_DA(R4) ;SET DA REG ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; RAISE IPL : CHECK FOR POWERFAIL BEFORE EXECUTING FUNCTION ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! SETIPL #31 ;DISABLE INTERRUPTS BBC #UCB$V_POWER,UCB$W_STS(R5),10$ ;IF CLR, NO POWER FAILURE ENBINT ;ENABLE INTERRUPTS ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; IF NO POWER FAIL, FALL THRU : OTHERWISE RELEASE MAPPING REGS AND CHAN ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! BRW 60$ ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; EXECUTE FUNCTION IN R0 BY PLACING IT INTO RK11 CSR : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 10$: MOVW R0,YM_CS(R4) ;EXECUTE FUNCTION ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; WAIT FOR INTERRUPT OR TIME OUT AND KEEP CHANNEL : ; 1] IF TIMEOUT : SAVE REGISTERS ; ENABLE INTERRUPTS ; FALL THROUGH TO IOFORK ; 2] IF INTERRUPT : BRW TO IOFORK ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WFIKPCH 61$,#6 ;WAITFOR INTERRUPT AND KEEP CHANNEL BRW 62$ ;IF NO TIMEOUT, CREATE FORK PROCESS ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; IF DEVICE TIMES OUT : SAVE REGISTERS ; CLEAR CONTROLLER ; RECAL DRIVE ; ENABLE INTERRUPTS ; FALL THRU TO IOFORK ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 61$: BISW3 #YM_CS_M_ERR,YM_CS(R4),UCB$W_YM_CS(R5) ;SAVE CSR MOVAB YM_DS(R4),R2 ;GET ADR. OF DS REG MOVAB UCB$W_YM_DS(R5),R3 ;GET ADR OF DS SAVE AREA MOVW (R2)+,(R3)+ ;SAVE YM_DS MOVW (R2)+,(R3)+ ;SAVE YM_ER MOVW (R2)+,(R3)+ ;SAVE YM_CS MOVW (R2)+,(R3)+ ;SAVE YM_WC MOVW (R2)+,(R3)+ ;SAVE YM_BA MOVW (R2)+,(R3)+ ;SAVE YM_DA MOVW (R2)+,(R3)+ ;SAVE YM_DB MOVW #^X1,YM_CS(R4) ;ISSUE CONTROL RESET ; MOVW #^XD,YM_CS(R4) ;ISSUE DRIVE RESET MOVZBW #YM_CS_M_IDE,YM_CS(R4) ;ENABLE DEVICE INTERRUPTS 62$: IOFORK ;CREATE FORK PROCESS ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; PURGE THE DATA PATH : ; ; THE CONFIGURATION REGISTER OBTAINED FROM THE CRB IS USED AS ; THE BASE OF THE OFFSETS TO THE DATA PATH REGISTERS ( DPR ). ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ;P_DP: ; PURGE DATA PATH MOVL UCB$L_CRB(R5),R3 ;GET ADDRESS OF CRB MOVL @CRB$L_INTD+VEC$L_ADP(R3),R2 ;GET ADR OF CONFIGURATION REG EXTZV #VEC$V_DATAPATH,#VEC$S_DATAPATH,- ;EXTRACT DATAPATH NUMBER CRB$L_INTD+VEC$B_DATAPATH(R3),R1 ; ASHL #UBA$V_DPR_BNE,#1,UBA$L_DPR(R2)[R1] ;PURGE DATAPATH ASHL #31-UBA$V_DPR_XMTER,UBA$L_DPR(R2)[R1],R0 ;ANY TRANSMISSION ERROR? BGEQ 20$ ;IF GEQ NO ; ; IS THERE AN ERROR : ; MOVL UBA$L_DPR(R2)[R1],UBA$L_DPR(R2)[R1] ;CLEAR DPPE BISW #YM_CS_M_ERR!- ;SET CONTROLLER ERROR AND, YM_CS_M_HE,UCB$W_YM_CS(R5) ;HARD ERROR ERROR CLRW UCB$W_YM_ER(R5) ;CLEAR ERROR REGISTER BICW #^C,UCB$W_YM_DS(R5) ;CLEAR ALL BUT DRIVE READY 20$: BBS #YM_CS_V_ERR,UCB$W_YM_CS(R5),30$ ;IF SET , DEVICE ERRORS BBC #UCB$V_DIAGBUF,UCB$W_DEVSTS(R5),40$ ;IF CLR, NO DIAGNOSTIC BUFFER 30$: MOVW R1,UCB$W_YM_DPN(R5) ;SAVE DATAPATH NUMBER MOVL UBA$L_DPR(R2)[R1],UCB$L_YM_DPR(R5) ;SAVE DATAPATH REGISTER EXTZV #9,#7,UCB$W_YM_BA(R5),R0 ;GET LOW BITS OF FINAL MAP REGISTER NUMBER ; ; GET MEMORY EXTENSION BITS : ; EXTZV #YM_CS_V_MEX,- ;HIGH BITS OF FINAL MAP REG #YM_CS_S_MEX,- UCB$W_YM_CS(R5),R1 ;PUT INTO R1 INSV R1,#7,#2,R0 ;INSERT HIGH BITS OF FINAL MAP REGISTER CMPW #495,R0 ;LEGAL MAP REGISTER NUMBER? BGEQ 35$ ;IF GEQ YES MOVZWL #495,R0 ;RESTRICT MAP REGISTER NUMBER 35$: MOVL UBA$L_MAP(R2)[R0],UCB$L_YM_FMPR(R5) ;SAVE FINAL MAP REGISTER CLRL UCB$L_YM_PMPR(R5) ;CLEAR PREVIOUS MAP REGISTER CONTENTS DECL R0 ;CALCULATE PREVIOUS MAP REGISTER NUMBER CMPV #VEC$V_MAPREG,#VEC$S_MAPREG,- ;ANY PREVIOUS MAP REGISTER? CRB$L_INTD+VEC$W_MAPREG(R3),R0 ; BGTR 40$ ;IF GTR NO MOVL UBA$L_MAP(R2)[R0],UCB$L_YM_PMPR(R5) ;SAVE PREVIOUS MAP REGISTER 40$: MULW3 #2,UCB$W_YM_WC(R5),UCB$W_BCR(R5) ;CONVERT WORD COUNT TO BYTE COUNT BBS #YM_CS_V_ERR,UCB$W_YM_CS(R5),60$ ;IF SET, DEVICE ERRORS CMPB #CDF_READHEAD,UCB$B_CEX(R5) ;READ HEADER FUNCTION? BRB 60$ ;BRANCH TO EXIT, IF HERE 60$: RELDPR ;RELEASE DATA PATH RELMPR ;RELEASE MAP REGISTERS RLSCHN: ; RELCHAN ;RELEASE CHANNEL ; ; RETURN REGISTERS ; .ENABL LSB RETREG: ;RETURN FINAL DEVICE REGISTERS ; ; PUT CS,DS,ER RK11 REGISTERS INTO R1,R2, AND R3 : ; MOVZWL UCB$W_YM_CS(R5),R1 ;RETRIEVE YM CSR MOVZWL UCB$W_YM_DS(R5),R2 ;RETREIVE DISK STATUS REG MOVZWL UCB$W_YM_ER(R5),R3 ;RETRIEVE ERROR REGISTER BITW #UCB$M_POWER!- ;POWER FAIL OR DEVICE TIMEOUT? UCB$M_TIMOUT,UCB$W_STS(R5) ; BNEQ 30$ ;IF NEQ YES - SPECIAL CONDITION BBC #YM_CS_V_ERR,R1,10$ ;IF CLR, NO ERRORS ; ; CALL ERROR LOGGER : ; JSB G^ERL$DEVICERR ;ALLOCATE AND FILL ERROR MESSAGE BUFFER BBS #IO$V_INHRETRY,UCB$W_FUNC(R5),20$ ;IF SET, RETRY INHIBITED BITW #YM_ER_M_OVR!- ;CYLINDER ADDRESS OVERFLOW, YM_ER_M_NXD!- ;NONEXISTENT DISK OR, YM_ER_M_PGE!- ;PROGRAMMING ERROR OR, YM_ER_M_NXM!- ;NON-EXISTENT MEMORY? YM_ER_M_DRE!- ;DRIVE TYPE ERROR OR, YM_ER_M_NXC!- ;INVALID DISK ADDRESS ERROR OR, YM_ER_M_NXS!- ;NON-EXISTENT SECTOR OR, YM_ER_M_WLO,R3 ;WRITE LOCK ERROR? BNEQ 20$ ;IF NEQ YES ; ; RETRIABLE ERROR EXIT ; CVTBL @UCB$L_DPC(R5),-(SP) ;GET BRANCH DISPLACEMENT ADDL (SP)+,UCB$L_DPC(R5) ;CALCULATE RETURN ADDRESS - 1 10$: INCL UCB$L_DPC(R5) ;ADJUST TO CORRECT RETURN ADDRESS JMP @UCB$L_DPC(R5) ;RETURN TO DRIVER ; ; FATAL CONTROLLER OR DRIVE ERROR EXIT ; 20$: BRW FATALERR ; ; ; SPECIAL CONDITION (POWER FAILURE OR DEVICE TIME OUT) ; 30$: BBSC #UCB$V_POWER,UCB$W_STS(R5),50$ ;IF SET, POWER FAILURE ; ; DEVICE TIME OUT ; JSB G^ERL$DEVICTMO ;LOG DEVICE TIME OUT MOVL UCB$L_CRB(R5),R3 ;GET ADDRESS OF CRB MOVL CRB$L_INTD+VEC$L_IDB(R3),R3 ;GET ADDRESS OF IDB CMPL R5,IDB$L_OWNER(R3) ;DEVICE OWN CONTROLLER? BNEQ 40$ ;IF NEQ NO MOVW #F_DRVCLR!1,YM_CS(R4) ;CLEAR ENTIRE RK11/RK05 SUBSYSTEM MOVZBW #YM_CS_M_IDE,YM_CS(R4) ;ENABLE DEVICE INTERRUPTS 40$: SETIPL UCB$B_FIPL(R5) ;LOWER TO FORK LEVEL MOVZWL #SS$_TIMEOUT,R0 ;SET DEVICE TIMEOUT STATUS DECB UCB$B_ERTCNT(R5) ;ANY ERROR RETRIES REMAINING? BEQL RESETXFR ;IF EQL NO RELCHAN ;RELEASE CHANNEL IF OWNED BICW #UCB$M_TIMOUT,UCB$W_STS(R5) ;CLEAR TIME OUT STATUS BRW FDISPATCH ; ; ; RESET TRANSFER BYTE COUNT TO ZERO ; RESETXFR: ; MOVL UCB$L_IRP(R5),R3 ;RETRIEVE ADDRESS OF I/O PACKET MNEGW IRP$W_BCNT(R3),UCB$W_BCR(R5) ;RESET TRANSFER BYTE COUNT BRW FUNCXT ; ; ; POWER FAILURE ; 50$: RELCHAN ;RELEASE CHANNEL IF OWNED MOVL UCB$L_IRP(R5),R3 ;RETRIEVE ADDRESS OF I/O PACKET MOVQ IRP$L_SVAPTE(R3),UCB$L_SVAPTE(R5) ;RESTORE TRANSFER PARAMETERS BRW YM_STARTIO ; .DSABL LSB .PAGE .SBTTL RK11/RK05 REGISTER DUMP ROUTINE ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; YM_REGDUMP - RK11/RK05 REGISTER DUMP ROUTINE ; ; THIS ROUTINE IS CALLED TO SAVE THE CONTROLLER AND DRIVE REGISTERS IN A ; SPECIFIED BUFFER. IT IS CALLED FROM THE DEVICE ERROR LOGGING ROUTINE AND ; FROM THE DIAGNOSTIC BUFFER FILL ROUTINE. ; ; INPUTS: ; ; R0 = ADDRESS OF REGISTER SAVE BUFFER. ; R4 = ADDRESS OF YM CSR ; R5 = DEVICE UNIT UCB ADDRESS. ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! YM_REGDUMP: ;RK11/RK05 REGISTER DUMP ROUTINE MOVL #11,(R0)+ ;INSERT NUMBER OF DEVICE REGISTERS MOVAL UCB$W_YM_DS(R5),R1 ;GET ADDRESS OF SAVED DEVICE REGISTERS MOVL #7,R2 ;SET NUMBER OF REGISTERS TO MOVE 10$: MOVZWL (R1)+,(R0)+ ;MOVE REGISTER TO BUFFER SOBGTR R2,10$ ;ANY MORE TO MOVE? MOVZWL (R1)+,(R0)+ ;INSERT DATAPATH NUMBER MOVL (R1)+,(R0)+ ;INSERT DATAPATH REGISTER MOVL (R1)+,(R0)+ ;INSERT FINAL MAP REGISTER MOVL (R1),(R0)+ ;INSERT PREVIOUS MAP REGISTER RSB ; .PAGE .SBTTL RK11/RK05 DISK DRIVE INITIALIZATION ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; YM_RK05_INIT: - RK11/RK05 DISK DRIVE INITIALIZATION ; ; THIS ROUTINE IS CALLED, VIA A JSB INSTRUCTION, AFTER CALLING THE ; CONTROLLER INITIALIZATION ROUTINE, AND UNDER THE FOLLOWING ; CIRCUMSTANCES : ; ; 1] AT SYSTEM INITIALIZATION ( STARTUP ) ; 2] IN ORDER TO LOAD AND/OR RELOAD THE DRIVER ; 3] AT POWER FAIL ( A POWER RECOVERY RESTART ) ; ; ; INPUTS: ; ; R4 = ADDRESS OF YM CSR ( CONTROL AND STATUS REGISTER ) ; R5 = DEVICE UNIT UCB ADDRESS ( UNIT CONTROL BLOCK ) ; ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! YM_RK05_INIT: ;RK11/RK05 UNIT INITIALIZATION MOVB S^#DT$_RK05,UCB$B_DEVTYPE(R5) ;SET YM DEVTYP MOVW #200,UCB$W_CYLINDERS(R5) ;SET # OF CYLS MOVL #200*2*12,UCB$L_MAXBLOCK(R5) ;SET MAXBLK TSTW UCB$W_UNIT(R5) ;UNIT = ? BEQL 10$ ;MAYBE A SECOND UNIT 10$: BISW #UCB$M_ONLINE!UCB$M_VALID,UCB$W_STS(R5) ;SET UNIT ONLINE RSB .PAGE .SBTTL RK11/RK05 UNSOLICITED INTERRUPT ROUTINE ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; YM_UNSOLNT - RK11/RK05 UNSOLICITED INTERRUPT ROUTINE ; ; ; INPUTS: ; ; R4 = ADDRESS OF YM CSR ; R5 = DEVICE UNIT UCB ADDRESS. ; ; OUTPUTS: ; ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! YM_UNSOLNT: ;RK11/RK05 UNSOLICITED INTERRUPT MOVB S^#DT$_RK05,UCB$B_DEVTYPE(R5) ;SET YM DEVTYP MOVW #200,UCB$W_CYLINDERS(R5) ;SET # OF CYLS MOVL #200*2*12,UCB$L_MAXBLOCK(R5) ;SET MAXBLK TSTW UCB$W_UNIT(R5) ;UNIT = ? BEQL 11$ ;MAYBE A SECOND UNIT 11$: BISW #UCB$M_ONLINE,UCB$W_STS(R5) ;SET UNIT ONLINE 10$: RSB ; .PAGE .SBTTL RK11/RK05 WAIT FOR CONTROLLER READY ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; YM_WAIT - WAIT FOR CONTROLLER READY ; ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! YM_WAIT: ;WAIT FOR CONTROLLER READY PUSHL R2 ;SAVE REGISTER DSBINT ;DISABLE INTERRUPTS MFPR S^#PR$_ICR,R2 ;READ INTERVAL COUNT REGISTER ADDL #20,R2 ;CALCULATE EXPIRATION TIME BLSS 20$ ;IF LSS NO WRAP AROUND MOVAW -10000(R2),R2 ;CALCULATE WRAP AROUND VALUE 10$: TSTB YM_CS(R4) ;CONTROLLER READY? BLSS 30$ ;IF LSS YES MFPR S^#PR$_ICR,-(SP) ;READ INTERVAL COUNT REGISTER CMPL (SP)+,R2 ;TIME TO WRAP AROUND? BGTR 10$ ;IF GTR NO 20$: TSTB YM_CS(R4) ;CONTROL READY? BLSS 30$ ;IF LSS YES MFPR S^#PR$_ICR,-(SP) ;READ INTERVAL COUNT REGISTER CMPL (SP)+,R2 ;TIME EXPIRE YET? BLSS 20$ ;IF LSS NO 30$: ENBINT ;ENABLE INTERRUPTS POPL R2 ;RESTORE REGISTER RSB ; .PAGE .SBTTL RK11/RK05 DISK CONTROLLER INTERRUPT DISPATCHER ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; YM$INT: - RK11/RK05 DISK CONTROLLER INTERRUPT DISPATCHER ; ; THIS ROUTINE IS ENTERED VIA A JSB INSTRUCTION WHEN AN INTERRUPT OCCURS ; ON AN RK11 DISK CONTROLLER. THE STATE OF THE STACK ON ENTRY IS: ; ; 00(SP) = POINTER TO THE ADDRESS OF THE IDB ( INTERRUPT DATA BLOCK ) ; 02(SP) = SAVED R0 ; 08(SP) = SAVED R1 ; 12(SP) = SAVED R2 ; 16(SP) = SAVED R3 ; 20(SP) = SAVED R4 ; 24(SP) = SAVED R5 ; 28(SP) = SAVED PSL ( PROCESSOR STATUS LONGWORD ) ; 32(SP) = SAVED PC ; ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! YM$INT:: ;YM INTERRUPT DISPATCHER MOVL @(SP),R3 ;GET ADDRESS OF IDB MOVL IDB$L_CSR(R3),R4 ;GET ADDRESS OF YM_CS MOVL IDB$L_OWNER(R3),R5 ;GET OWNER UNIT UCB ADDRESS BEQL 10$ ;IF EQL NO OWNER BBSC #UCB$V_INT,UCB$W_STS(R5),30$ ;IF SET, INTERRUPT EXPECTED ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; NO INTERRUPT EXPECTED : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 10$: MOVW YM_DS(R4),R1 ;GET DISK STATUS ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; CLEAR R2 FOR EXTZV : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! CLRL R2 ;CLEAR R2 FOR EXTZV ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; GET ID OF DRIVE THAT SET INTERRUPT : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! EXTZV #YM_DS_V_ID,- #YM_DS_S_ID,- R1,- ;GET DRV THAT SET INTERRUPT R2 ;INTO R2 ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; CHECK IF THE SEEK IS COMPLETE : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! BITW #YM_CS_M_SCP,YM_CS(R4) ;IS SEEK COMPLETE? BNEQ 20$ ;NEQ : DRIVE FOUND ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; MUST GO THRU HERE TO EXIT INTERRUPT : ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! MOVZBW #YM_CS_M_IDE,YM_CS(R4) ;ENABLE DEVICE INTERRUPTS ADDL #4,SP ;CLEAN STACK MOVQ (SP)+,R0 ;RESTORE REGISTERS MOVQ (SP)+,R2 ; MOVQ (SP)+,R4 ; REI ; 20$: CLRL R5 ;CLEAR R5 FOR INSV INSV R2,- ; R2 HAS THE UNIT NUMBER #YM_DA_V_DRSEL,- #YM_DA_S_DRSEL,- R5 ;SELECT DRIVE IN R5 MOVW R5,YM_DA(R4) ;SELECT UNIT MOVL IDB$L_UCBLST(R3)[R2],R5 ;GET ADDRESS OF UCB BEQL 80$ ;IF EQL NO CORRESPONDING UNIT BBCC #UCB$V_INT,UCB$W_STS(R5),70$ ;IF CLR,INTERR NOT EXPECTED 30$: 40$: MOVW YM_CS(R4),UCB$W_YM_CS(R5) ; SAVE CSR BLSS 100$ ;IF LSS ERROR BBS #UCB$V_DIAGBUF,UCB$W_DEVSTS(R5),100$ ;IF SET, DIAGNOSTIC BUFFER MOVW YM_WC(R4),UCB$W_YM_WC(R5) ; SAVE WC REGISTER MOVW YM_BA(R4),UCB$W_YM_BA(R5) ; SAVE BA REGISTER ; CALL DRIVER AT STARTIO : 50$: MOVQ UCB$L_FR3(R5),R3 ;RESTORE DRIVER CONTEXT JSB @UCB$L_FPC(R5) ;CALL DRIVER AT INTERRUPT RETURN ADDRESS MOVL @(SP),R3 ;GET ADDRESS OF IDB MOVL IDB$L_CSR(R3),R4 ;GET ADDRESS OF YM_CS 60$: MOVW #^X1,YM_CS(R4) ;CLEAR CONTROLLER BSBW YM_WAIT ;WAIT FOR CONTROLLER READY BRW 10$ ; 70$: BSBW YM_UNSOLNT ;CALL UNSOLICITED INTERRUPT ROUTINE MOVL @(SP),R3 ;GET ADDRESS OF IDB MOVL IDB$L_CSR(R3),R4 ;GET ADDRESS OF YM_CS BEQL 60$ ;IF EQL NO MOVW #^X1,YM_CS(R4) ;ISSUE CONTROL RESET BRW 10$ ; 80$: BSBW YM_WAIT ;WAIT FOR FUNCTION TO COMPLETE TSTW YM_CS(R4) ;SUCCESSFUL COMPLETION? BGEQ 90$ ;IF GEQ YES MOVW #F_DRVCLR!1,YM_CS(R4) ;CLEAR RK05 DRIVE BSBW YM_WAIT ;WAIT FOR FUNCTION TO COMPLETE 90$: BRW 10$ ; 100$: MOVAB YM_DS(R4),R2 ;GET ADDRESS OF DEVICE REGISTERS MOVAB UCB$W_YM_DS(R5),R3 ; ADR OF DEVICE REG SAV AREA MOVW (R2)+,(R3)+ ;SAVE DS REGISTER MOVW (R2)+,(R3)+ ;SAVE ER REGISTER MOVW (R2)+,(R3)+ ;SAVE CONTROL STATUS REGISTER MOVW (R2)+,(R3)+ ;SAVE WORD COUNT REGISTER MOVW (R2)+,(R3)+ ;SAVE BUS ADDRESS REGISTER MOVW (R2)+,(R3)+ ;SAVE DISK ADDRESS REGISTER MOVW (R2),(R3) ;SAVE DATA BUFFER REGISTER MOVW #^X1,YM_CS(R4) ;SET CONTROL RESET MOVW #^XD,YM_CS(R4) ;SET DRIVE RESET 110$: BRW 50$ ; .PAGE .SBTTL RK11/RK05 DISK CONTROLLER INITIALIZATION ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; YM_RK11_INIT: - RK11/RK05 DISK CONTROLLER INITIALIZATION ; ; THIS ROUTINE IS CALLED, VIA A JSB INSTRUCTION, BEFORE CALLING THE ; DISK DRIVE ( UNIT ) INITIALIZATION ROUTINE, AND UNDER THE FOLLOW- ; ING CIRCUMSTANCES : ; ; 1] AT SYSTEM INITIALIZATION ( STARTUP ) ; 2] IN ORDER TO LOAD AND/OR RELOAD THE DRIVER ; 3] AT POWER FAIL ( A POWER RECOVERY RESTART ) ; ; INPUTS: ; ; R0 = SCRATCH. ; R1 = SCRATCH. ; R2 = SCRATCH. ; R3 = SCRATCH. ; R4 = ADDRESS OF YM CSR ( CONTROL AND STATUS REGISTER ) ; R5 = ADDRESS OF CONTROLLER IDB ( INTERRUPT DATA BLOCK ) ; R6 = ADDRESS OF DDB ; R8 = ADDRESS OF CRB ; ; ; ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ; ; SYMBOLIC OFFSETS ARE NOT USED BUT THE HEX INPUTS ARE AS BELOW: ; ; ^X1 = _G0!FCODE ;FCODE = 000 CONTROL RESET ; ^XD = _GO!FCODE ;FCODE = 110 DRIVE RESET ; THEN ENABLE INTERRUPTS ; ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! YM_RK11_INIT: ;RK11/RK05 DISK CONTROLLER INITIALIZATION MOVW #^X1,YM_CS(R4) ;ISSUE CONTROL RESET MOVW #^XD,YM_CS(R4) ;ISSUE DRIVE RESET MOVZBW #YM_CS_M_IDE,YM_CS(R4) ;ENABLE DEVICE INTERRUPTS RSB ;RETURN YM_END: ;ADDRESS OF LAST LOCATION IN DRIVER .END