! ! UBAOPN.HLP -- on-line help file for the program UBAOPN ! ! Programmer: Philip Watson ! The University of Texas at Austin ! Computation Center ! Austin, Texas 78712 ! 1 Ubaopn UBAOPN is a program that reads and writes device registers on UNIBUS 0 and UNIBUS 1, and is generally used by the systems staff to test newly- installed devices. You should be careful not to disrupt UNIBUS devices with indiscriminate use of UBAOPN. The program requires the privilege PFNMAP. To run, type: $ RUN SYS$SYSTEM:UBAOPN It prompts with: UBAOPN> 2 Commands UBAOPN prompts for its first command with UBAOPN> After a register is opened, the prompt is Unibus unit:address = value : where unit, address, and value are octal numbers. You respond to the prompts with a line containing the following items, in order. [unit:address] [value] [control] [!comment] Each item is optional, except that a unit and address must be specified in the first command. You can use spaces and tabs between the items, which are defined below. unit:address -- UNIBUS unit number, 0 or 1, and device register address, 760000 to 777776 (octal) for the register to read or write. The address must be a word (even) address. value -- a value, 0 to 177777 (octal), to write to the current address control -- a character indicating the next address to examine: to step to next higher word, "." to reexamine the current word, or "^" to back up to the previous word !comment -- a comment beginning with "!" 2 Examples Here is an example session using UBAOPN: $ RUN SYS$SYSTEM:UBAOPN UBAOPN>0:760000 ! Read address 760000 on UNIBUS 0 Unibus 0:760000 = 000000 : ! Step to next word Unibus 0:760002 = 000000 : 400 ! Write 400 (octal) to 760002 Unibus 0:760004 = 000000 : 1:767002 ! Read address 767002 on UNIBUS 1 Unibus 1:767002 = 000000 : 200^ ! Write 200 (octal) and step back Unibus 1:767000 = 000400 : ! Exit This is how UBAOPN can be used as a foreign command: $ UBAOPN = "$SYS$SYSTEM:UBAOPN" $ UBAOPN 0:770000 004000 ! Write 004000 (octal) to 0:770000