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GPART: Fix for issue where IX and IY are not returned to caller #84

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GPART: Fix for issue where IX and IY are not returned to caller #84

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19 changes: 17 additions & 2 deletions source/command/msxdos/sys.mac
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Original file line number Diff line number Diff line change
Expand Up @@ -1017,6 +1017,23 @@ zstr_slow:
;LD E,RELEASE##+(RELEASE##/256)*16
ret

@GPART: ; RETURN CORRECT IX, IY VALUES BY WALKING AND MODIFYING STACK
EXX
POP HL ; Get return address, and pop off the saved
POP DE ; values of IX and IY.
POP DE
PUSH HL
EXX
CALL KBDOS ; Call KBDOS, which returns stuff in IY & IX.
EXX ; Save returned values.
POP HL ; Get the return address again.
PUSH IX ; Push new 'saved' IX and IY values.
PUSH IY
PUSH HL
EXX
RET


FUNC_WITH_IXIY:
EXX
pop bc
Expand All @@ -1036,7 +1053,6 @@ FUNC_WITH_IXIY:
push bc
EXX
RET

;
;
;------------------------------------------------------------------------------
Expand Down Expand Up @@ -1263,7 +1279,6 @@ _KBSDE: LD DE,BUFF1 ; DE -> buffer containing FIB or string.
@RALLOC:
@DSPACE:
@LOCK:
@GPART:
@Z80MODE:

;
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2 changes: 1 addition & 1 deletion source/kernel/bank0/bdos.mac
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Expand Up @@ -935,7 +935,7 @@ STRCPY: LD A,(HL) ;Get character from string.
ld bc,64
ldir
pop hl
ret
ret
;
;------------------------------------------------------------------------------
;
Expand Down