chris/open-roms
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added some debug code

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FeralChild64 committed 2021-03-03 21:52:57 +01:00
1 parent 27c36bb554
commit 70887cc53c
1 file changed
+26 -17
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src/dos_m65/dev_floppy/dev_fd_util_readsector.s
+26 -17
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@@ -14,33 +14,42 @@ dev_fd_util_readsector:
; Select physical track and sector based on logical ones from PAR_TRACK and PAR_SECTOR ; Select physical track and sector based on logical ones from PAR_TRACK and PAR_SECTOR
lda PAR_TRACK ; lda PAR_TRACK
dec ; dec
sta FDC_TRACK ; $D084 ; sta FDC_TRACK ; $D084
lda PAR_SECTOR ; lda PAR_SECTOR
cmp #20 ; cmp #20
bcc @side0 ; bcc @side0
@side1: @side1:
lda #%00001000 ; set side 1 ; lda #%00001000 ; set side 1
tsb FDC_CONTROL ; $D080 ; tsb FDC_CONTROL ; $D080
lda PAR_SECTOR ; lda PAR_SECTOR
sec ; sec
sbc #20 ; sbc #20
ldx #$01 ; ldx #$01
+skip_2_bytes_trash_nvz ; +skip_2_bytes_trash_nvz
@side0: @side0:
ldx #$00 ; ldx #$00
stx FDC_SIDE ; $D086 ; stx FDC_SIDE ; $D086
clc ; clc
ror ; ror
; sta FDC_SECTOR ; $D085
; XXX temporary code, just for testing (replacement for the commented-out code)
lda #39
sta FDC_TRACK ; $D084
lda #00
sta FDC_SECTOR ; $D085 sta FDC_SECTOR ; $D085
lda #00
sta FDC_SIDE ; $D086
; Ask the controller to read the sector XXX how to detect errors, missing disk, etc.? ; Ask the controller to read the sector XXX how to detect errors, missing disk, etc.?