;
;   ####             #    #     # #
;   #   #            #    #       #          The FreeWare C library for
;   #   #  ##   ###  #  # #     # ###             RISC OS machines
;   #   # #  # #     # #  #     # #  #   ___________________________________
;   #   # ####  ###  ##   #     # #  #
;   #   # #        # # #  #     # #  #    Please refer to the accompanying
;   ####   ### ####  #  # ##### # ###    documentation for conditions of use
;   ________________________________________________________________________
;
;   File:    Sprite.s.62ReadSave
;   Author:  Copyright  1993,1994 Jason Williams, Jason Howat
;   Version: 1.01 (10 Jun 1994)
;   Purpose: Read the size of a sprite save area (veneer to SpriteOp 62)

        GET     RegDefs.h
        GET     SwiNos.h
        GET     Macros.h
;
        PREAMBLE
        STARTCODE Sprite_ReadSaveAreaSize
;
; extern os_error *Sprite_ReadSaveAreaSize(areainfo*, sprname*, size*);
;
        STMFD   sp!, {v1,lr}

        MOV     v1, a3             ; r3 = &size

        MOV     a3, a2             ; r2 = &sprname
        MOV     a2, a1             ; r1 = &areainfo

        MOV     a1, #256           ; r0 = 256 + 62
        ADD     a1, a1, #62

        SWI     OS_SpriteOp + XOS_Bit

        STRVC   a4, [v1]           ; store resulting size
        MOVVC   a1, #0             ; return NULL (no error)

        LDMFD   sp!, {v1,pc}
;
        END
