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blockdev: fix broken blkSeek/blkTell

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scas didn't warn about this, but it seems that `jr` calls were out of
range. Seek and Tell was broken. Replacing `jr` with `jp` does the
trick.
This commit is contained in:
Virgil Dupras 2019-05-12 13:57:37 -04:00
parent c77d96da22
commit 1ea5bedb4f
1 changed files with 19 additions and 15 deletions
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10
parts/z80/blockdev.asm
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@ -37,6 +37,8 @@
; ;
; Tell: ; Tell:
; Return the position of the "pointer" in HL ; Return the position of the "pointer" in HL
;
; All routines are expected to preserve unused registers.
; *** DEFINES *** ; *** DEFINES ***
@ -69,8 +71,9 @@ blkSel:
push af push af
push de push de
push hl push hl
ld hl, blkDevTbl ld hl, blkDevTbl
cp 0 or a ; cp 0
jr z, .afterloop ; index is zero? don't loop jr z, .afterloop ; index is zero? don't loop
push bc push bc
ld b, a ld b, a
@ -106,6 +109,7 @@ blkSel:
inc hl inc hl
call intoHL call intoHL
call writeHLinDE call writeHLinDE
pop hl pop hl
pop de pop de
pop af pop af
@ -236,12 +240,12 @@ _blkSeek:
ld hl, 0xffff ld hl, 0xffff
.seek: .seek:
pop de pop de
jr _blkCall jp _blkCall
; Returns the current position of the selected device in HL. ; Returns the current position of the selected device in HL.
blkTell: blkTell:
ld ix, (BLOCKDEV_TELL) ld ix, (BLOCKDEV_TELL)
jr _blkCall jp _blkCall
; This label is at the end of the file on purpose: the glue file should include ; This label is at the end of the file on purpose: the glue file should include
; a list of device routine table entries just after the include. Each line ; a list of device routine table entries just after the include. Each line