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further refactoring (Trace33P should actually do what I want now)

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4am 2021-04-12 17:38:08 -04:00
parent 0bf69eacb2
commit 3f99d8f14c
3 changed files with 15 additions and 17 deletions
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17
src/id/precheck.a
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@ -1,3 +1,15 @@
precheck_sectors
; This list is (re)initialized in IDBootloader,
; then potentially altered in IDDOS33 and elsewhere.
; Values are logical sector numbers.
; There are always 16 (0x10) values in this list.
; Negative values are ignored.
; Positive values are treated as logical
; sector numbers and read from track $00.
; Sectors are read in the order listed here.
!byte $09,$08,$07,$06,$05,$04,$03,$02,$01
!byte $00,$FF,$FE,$FD,$FC,$FB,$FA,$F9,$F8
;-------------------------------
; PreCheckT00
;
@ -7,10 +19,7 @@
; the sectors we're about to trace are actually readable.
;
; Before calling this function, you need to set all 16
; bytes of the precheck_sectors array to a positive
; number (check that sector) or a negative number (don't
; check that sector). The array is ordered by logical
; sectors, regardless of the type of disk.
; bytes of the precheck_sectors array (see above for format).
;
; If all required sectors are readable by Passport's own
; sector read routine, this exits gracefully with all

12
src/id/trace33.a
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@ -13,18 +13,6 @@ TraceDOS33
ldx #>TraceDOS33b
jmp Trace
precheck_sectors
; This list is (re)initialized in IDBootloader,
; then potentially altered in IDDOS33.
; Values are logical sector numbers.
; There are always 16 (0x10) values in this list.
; Negative values are ignored.
; Positive values are treated as logical
; sector numbers and read from track $00.
; Sectors are read in the order listed here.
!byte $09,$08,$07,$06,$05,$04,$03,$02,$01
!byte $00,$FF,$FE,$FD,$FC,$FB,$FA,$F9,$F8
;-------------------------------
; TraceDOS33b
; set up 2nd boot trace at $084A

3
src/id/trace33p.a
View File

@ -38,7 +38,8 @@ TraceSpecDel
dex
bpl -
inc precheck_sectors
inc precheck_sectors+7
lda #$07
inc precheck_sectors+1
jsr PreCheckT00
jsr ClearTSBuffer