mirror of
https://github.com/A2osX/A2osX.git
synced 2025-04-04 03:32:12 +00:00
Kernel 0.94
This commit is contained in:
Rémy GIBERT
parent
541d9679b4
commit
c500a3bdad
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Binary file not shown.
Binary file not shown.
@ -316,7 +316,7 @@ CS.RUN.LL.DISKII
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stz CurTrack
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lda #160
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lda #162
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sta CurQTrack
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ldx #0
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@ -8,81 +8,90 @@ NEW
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* disk(ette). if booted in apple /// native mode, the regular
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* sos boot will be attempted.
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*--------------------------------------
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dcmd .EQ $42 disk command (=1 for read)
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unit .EQ $43 (16*slot)+(128*(drive-1))
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buff .EQ $44 ram address
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blok .EQ $46 disk address
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dent .EQ $48 device call entry address.
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idxl .EQ $4a pointer to low page of index block
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idxh .EQ $4c pointer to high page of index block
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idxp .EQ $4e index byte pointer.
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iobuff .EQ $60
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* the following are for disk ii only:
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dbuf .EQ $26
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slotz .EQ $2b
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oddbits .EQ $3c
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sector .EQ $3d
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trktmp .EQ $40
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track .EQ $41
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prior .EQ $50
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trkn .EQ $51
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rtrycnt .EQ $52
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curtrk .EQ $53
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trkcnt .EQ $54
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*
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q6l .EQ $c08c
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motoron .EQ $c089
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motoroff .EQ $c088
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phaseoff .EQ $c080
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nbuf1 .EQ $300
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dnib .EQ $2d6
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* directory dependent stuff...
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clrscrn .EQ $fc58
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scrn .EQ $5ae
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dostyp .EQ $ff
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sosid .EQ $c00
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entlen .EQ sosid+$23
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kernel .EQ $2000
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dcmd .EQ $42 disk command (=1 for read)
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unit .EQ $43 (16*slot)+(128*(drive-1))
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buff .EQ $44 ram address
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blok .EQ $46 disk address
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dent .EQ $48 device call entry address
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idxl .EQ $4a pointer to low page of index block
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idxh .EQ $4c pointer to high page of index block
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idxp .EQ $4e index byte pointer
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iobuff .EQ $60
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* the following are for disk ii only
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dbuf .EQ $26
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slotz .EQ $2b
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oddbits .EQ $3c
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sector .EQ $3d
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BB.HdrPtr .EQ $3f
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BB.TargetTrk .EQ $41
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BB.TargetQTrk .EQ $51
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rtrycnt .EQ $52
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BB.CurQTrk .EQ $53
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BB.Hdr .EQ $54
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BB.HdrTrk .EQ $55
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BB.HdrVol .EQ $56
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BB.Hdr96 .EQ $57
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nbuf1 .EQ $300
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dnib .EQ $2d6
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clrscrn .EQ $fc58
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scrn .EQ $5b6
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sosid .EQ $c00
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entlen .EQ sosid+$23
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kernel .EQ $2000
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*--------------------------------------
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.PH $800
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xboot .DA #1
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entry sec apple iii enters xboot 'ora $38'
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bcs entry1 branch if not apple iii native mode.
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jmp goapl3 go do apple iii boot!
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bcs entry1 branch if not apple iii native mode
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*--------------------------------------
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lda #$9f make apple iii boot using block 1
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pha the return address is $a000
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lda #$ff
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pha
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entry1 stx unit save unit number.
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cmp #$03 for disk ii.
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php save result, it may be irrelevent.
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txa find out if disk ii.
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and #$70 strip drive # if any.
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lda #1 read block 1
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ldx #0
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jmp $f479
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*--------------------------------------
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entry1 stx unit save unit number
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cmp #$03 for disk ii
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php save result, it may be irrelevant
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txa find out if disk ii
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and #$70 strip drive # if any
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lsr
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lsr get slot address
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lsr
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lsr
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lsr get slot address.
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lsr
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lsr
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ora #$c0
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sta dent+1
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ldy #$ff look at last byte.
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sta dent+1
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ldy #$ff look at last byte
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sty dent
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plp restore carry (if disk ii & sect 0&2 read).
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plp restore carry (if disk ii & sect 0&2 read)
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iny make y=0
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lda (dent),y get device entry addr.
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bne ndsk2 branch if not disk ii (16 sector).
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bcs isdsk2 branch if it is disk ii, but block 0 read.
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lda #3 make rom read only sector 2
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sta xboot to complete block 0
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iny make y=0
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lda (dent),y get device entry addr
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bne ndsk2 branch if not disk ii (16 sector)
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bcs isdsk2 branch if it is disk ii, but block 0 read
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lda #3 make rom read only sector 2
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sta xboot to complete block 0
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inc sector was = 1
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lda dent+1 do rts to re-enter rom.
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pha
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lda dent+1 do rts to re-enter rom
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pha
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lda #$5b
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pha
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rts go read sector 2 into $900
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*--------------------------------------
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isdsk2 sta trktmp make sure previous track =0
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isdsk2 sta BB.HdrTrk A=0, make sure previous track =0
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sta dent and dent points at beginning of slot
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ldy #$63 move code from card to ram
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mvboot lda (dent),y
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@ -91,19 +100,28 @@ mvboot lda (dent),y
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cpy #$eb have we moved enough?
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bne mvboot
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ldx #6 now modify code to handle errors.
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ldx #9 now modify code to handle errors.
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modboot ldy mods,x
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lda chgs,x
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sta zzstart,y
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lda endcode,x
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sta zzzend,x
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dex
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bpl modboot
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ldx #7
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modboot2 lda endcode-1,x
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sta zzzend-1,x
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dex
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bne modboot2
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lda #<d2io reset device entry
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stx BB.HdrPtr+1
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lda #BB.Hdr
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sta BB.HdrPtr
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lda /d2io reset device entry
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sta dent+1 to point at disk ii routines.
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lda #>d2io get low addr (must be <$80)
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lda #d2io get low addr (must be <$80)
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ndsk2 ldy #0 make sure y=0 again.
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cmp #$f9
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@ -116,7 +134,7 @@ ndsk2 ldy #0 make sure y=0 again.
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sty idxp
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sty blok+1
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iny
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sty dcmd ;set read command.
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sty dcmd set read command.
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iny
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sty blok to read directory blocks
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lda #$c 2-5 at $c00
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@ -152,30 +170,28 @@ nxdent1 clc
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bcs nxdent2
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cmp #$a have all file names been compared?
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beq nopro branch if no pro.kernel.
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beq booterr branch if no pro.kernel.
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ldy #4 else, begin at block beginning.
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nxdent2 sty idxl note: this method treats garbage at
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lda sysname the end of the dir block as an entry.
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and #$f get target name length.
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tay
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ldy #0
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lda (idxl),y
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cmp #$26 $20 = storage type + 6 = "PRODOS" len
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bne nxdent branch if no match.
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ldy #6
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lookpro lda (idxl),y look for matching name.
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cmp sysname,y last to first method.
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cmp BB.ProDOS-1,y last to first method.
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bne nxdent branch if no match.
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dey else check all characters.
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bpl lookpro including length/storage type.
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and #$f0 make sure storage type is a tree!
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cmp #$20
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bne booterr branch if not.
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bne lookpro
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ldy #$10 get file type & index block addr.
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lda (idxl),y
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cmp #dostyp is it a system file?
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cmp #S.FI.T.SYS is it a system file?
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bne booterr
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iny
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@ -183,10 +199,11 @@ lookpro lda (idxl),y look for matching name.
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sta blok
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iny
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lda (idxl),y
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sta blok+1
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lda #0 now set up to read kernel.
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sta idxl
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ldy #$1e read index block at $1e00 and
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sty idxl+1 kernel at $2000
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sty iobuff+1
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@ -198,6 +215,7 @@ bterr2 bcs booterr
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inc iobuff+1
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inc iobuff+1
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ldy idxp get index pointer
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inc idxp bump for next time.
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lda (idxl),y
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@ -208,72 +226,35 @@ bterr2 bcs booterr
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bne rdkernl branch if more to read.
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jmp kernel go execute kernel code.
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*--------------------------------------
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booterr jsr clrscrn clear video
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ldy #BB.MSG.NoProDOS.Len-1
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nopro .EQ *
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booterr .EQ *
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jmp quitmes
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sysname .DA #$26
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.AS "prodos "
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.1 lda BB.MSG.NoProDOS,y
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sta scrn,y
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dey
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bpl .1
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bmi *
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*--------------------------------------
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goread lda iobuff
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sta buff
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lda iobuff+1
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sta buff+1
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jmp (dent)
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*
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mods .DA mod1,mod2,mod3,mod4,mod5,mod6,mod7
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chgs .DA chg1,chg2,chg3,chg4,chg5,chg6,chg7
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endcode .EQ *
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*--------------------------------------
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ldx slotz
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mods .DA #mod1,#mod2,#mod3,#mod4,#mod5,#mod6,#mod7,#mod8,#mod8+1,#mod9
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chgs .DA #chg1,#chg2,#chg3,#chg4,#chg5,#chg6,#chg7,#$91,#BB.HdrPtr,#BB.HdrTrk
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endcode ldx slotz
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clc
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rts
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jmp seek
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*--------------------------------------
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goapl3 .EQ *+$9800
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lda #$9f make apple iii boot using block 1.
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pha the return address is $a000
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lda #$ff
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pha
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lda #1 read block 1.
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ldx #0
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jmp $f479
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*--------------------------------------
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quitmes jsr clrscrn clear video.
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ldy #meslen print message centered on screen.
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prmess lda errmess,y
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sta scrn,y
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dey
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bpl prmess
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hang jmp hang
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meslen .EQ 28
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errmess .AS -"*** unable to load prodos ***"
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setphase lda curtrk get current track
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clrphase and #3 mask for 1 of 4 phases
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rol double for phaseon/off index
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ora slotz
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tax
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lda phaseoff,x turn on/off one phase
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lda #$2c
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*--------------------------------------
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mswait ldx #$11
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msw1 dex delay 86 usec.
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bne msw1
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sbc #$1 done 'n' intervals?
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bne mswait a-reg counts
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ldx slotz restore x-reg
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rts
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BB.MSG.NoProDOS .AS -"ERROR"
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BB.MSG.NoProDOS.Len .EQ *-BB.MSG.NoProDOS
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BB.ProDOS .AS "PRODOS"
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*--------------------------------------
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d2io lda blok figure out track & sector.
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and #7 strip track for now.
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@ -284,61 +265,114 @@ d2io lda blok figure out track & sector.
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plp
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rol now we have the first sector of block.
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sta sector
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lda blok+1 get high block #
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lsr shift hi addr to carry.
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lda blok now figure track #
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ror
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lsr
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lsr
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sta track
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asl
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sta trkn
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sta BB.TargetTrk
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jsr BB.Trk2Qtrk
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sta BB.TargetQTrk
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lda buff+1
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sta dbuf+1
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sta dbuf+1
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ldx slotz
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lda motoron,x
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lda IO.D2.DrvOn,x
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jsr rdsector go read sector.
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inc dbuf+1 bump address
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inc sector
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inc sector and sector #
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bcs quitrd branch if error.
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jsr rdsector
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quitrd ldy motoroff,x
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quitrd ldy IO.D2.DrvOff,x
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erretrn rts return error status in carry.
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*
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*--------------------------------------
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rdsector .EQ * do seek then read sector.
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*
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seek lda trktmp get track we're on.
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seek lda BB.HdrTrk get track we're on
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jsr BB.Trk2Qtrk
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asl
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sta curtrk
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lda #$0
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sta trkcnt halftrack count.
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sta BB.CurQTrk
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seek2 lda curtrk save curtrk for
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sta prior delayed turnoff.
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sec
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sbc trkn delta-tracks.
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beq seekend br if curtrk=destination
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.1 lda BB.CurQTrk
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cmp BB.TargetQTrk
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beq seekend
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bcs out move out, not in
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bcs .2 move out, not in
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inc curtrk incr current track (in).
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bcc skin (always taken)
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inc
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out dec curtrk decr current track (out).
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skin sec
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step2 jsr setphase
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lda prior
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clc for phaseoff
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jsr clrphase de-energize previous phase.
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bne seek2 (always taken)
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.HS B0 BCS
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.2 dec
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seekend .EQ *
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sta BB.CurQTrk
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jsr BB.PhaseOn
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rdsect1 ldy #$7f allow 127 mistakes.
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lda #30
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jsr BB.MSWait Trash X
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ldx slotz
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lda IO.D2.Ph0Off,x
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lda IO.D2.Ph1Off,x
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lda IO.D2.Ph2Off,x
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lda IO.D2.Ph3Off,x
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lda #10
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jsr BB.MSWait Trash X
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beq .1 (always taken)
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*--------------------------------------
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BB.PhaseOn pha
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jsr .7
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pla
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bit #1 1,3,5,7 ?
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beq .8
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inc
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.7 and #6 mask for 0,2,4,6
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ora slotz Slot $n0
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tax
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lda IO.D2.Ph0On,x turn on one phase
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.8 rts
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*--------------------------------------
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BB.MSWait sec (6) JSR (2)
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.1 ldx #15 (2)
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.2 dex (2) delay 81 usec.
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bne .2 (2+) 5x15 + 4 + 2
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sbc #$1 (2) done 'n' intervals?
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bne .1 (2+) a-reg counts
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rts (6)
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*--------------------------------------
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BB.Trk2Qtrk asl x2
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sta .1+1
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bit BB.HdrVol
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bmi .1 x4
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lsr x3
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.1 adc #$ff SELF MODIFIED
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rts
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*--------------------------------------
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seekend ldx slotz
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ldy #$7f allow 127 mistakes.
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sty rtrycnt
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php
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@ -352,30 +386,29 @@ rddata php carry set if reading sector.
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rd0 dey every time y=0 decrement find count.
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beq tryread
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zzstart .EQ *
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*--------------------------------------
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* from zzstart to zzend code is moved from rom and modified to match this code...
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*--------------------------------------
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zzstart .EQ *
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rd1 lda q6l,x read a byet from the state machine.
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bpl rd1 loop until ready.
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dsect
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org zzstart+5 equivalent to org *
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rd1 lda IO.D2.RData,x read a byte from the state machine.
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bpl rd1 loop until ready.
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.DUMMY
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rd1a eor #$d5 mark 1?
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mod1 .EQ *-zzstart+1
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bne rd0 branch if not.
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chg1 .EQ rd0-*
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rd2 lda q6l,x
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rd2 lda IO.D2.RData,x
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bpl rd2
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cmp #$aa mark 2?
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bne rd1a
|
||||
nop waste a little time.
|
||||
|
||||
rd3 lda q6l,x
|
||||
rd3 lda IO.D2.RData,x
|
||||
bpl rd3
|
||||
|
||||
cmp #$96 header mark 3?
|
||||
@ -392,17 +425,20 @@ chg2 .EQ rdhead-*
|
||||
mod3 .EQ *-zzstart+1
|
||||
rdhd0 bne rdhead otherwise, start over.
|
||||
|
||||
chg3 .EQ rdhead-*
|
||||
chg3 .EQ rdhead-*
|
||||
|
||||
rdhd1 ldy #3 read in trk,sect,&volume #.
|
||||
rdhd2 sta trktmp save last result in temp
|
||||
|
||||
rdhd3 lda q6l,x
|
||||
mod8 .EQ *-zzstart
|
||||
rdhd2 sta (BB.HdrPtr),y save last result in .. , BB.HdrTrk , BB.HdrVol , ..
|
||||
|
||||
rdhd3 lda IO.D2.RData,x
|
||||
bpl rdhd3
|
||||
|
||||
rol
|
||||
sta oddbits save odd bits (7,5,3,1)
|
||||
|
||||
rdhd4 lda q6l,x
|
||||
rdhd4 lda IO.D2.RData,x
|
||||
bpl rdhd4
|
||||
|
||||
and oddbits combine even and odd to form value.
|
||||
@ -417,20 +453,22 @@ mod4 .EQ *-zzstart+1
|
||||
|
||||
chg4 .EQ rdhead-*
|
||||
|
||||
lda trktmp previous result is track #
|
||||
cmp track is desired track found?
|
||||
mod9 .EQ *-zzstart+1
|
||||
lda BB.HdrTrk previous result is track #
|
||||
cmp BB.TargetTrk is desired track found?
|
||||
|
||||
mod5 .EQ *-zzstart+1
|
||||
bne goseek re-seek if mismatch.
|
||||
|
||||
chg5a .EQ *
|
||||
mod6 .EQ *-zzstart+1
|
||||
bcs rddata branch if proper track always.
|
||||
chg6 .EQ rddata-*
|
||||
|
||||
*--------------------------------------
|
||||
rddt1 ldy #$56 read 2 bit groupings first.
|
||||
rddt1a sty oddbits
|
||||
|
||||
rddt2 ldy q6l,x
|
||||
rddt2 ldy IO.D2.RData,x
|
||||
bpl rddt2
|
||||
|
||||
eor dnib,y denibblize using table left from boot rom.
|
||||
@ -441,7 +479,7 @@ rddt2 ldy q6l,x
|
||||
|
||||
rddt3 sty oddbits now count up for 6-bit groups.
|
||||
|
||||
rddt4 ldy q6l,x
|
||||
rddt4 ldy IO.D2.RData,x
|
||||
bpl rddt4
|
||||
|
||||
eor dnib,y
|
||||
@ -450,7 +488,7 @@ rddt4 ldy q6l,x
|
||||
iny
|
||||
bne rddt3 loop for 256 bytes.
|
||||
|
||||
rdchk ldy q6l,x now verify checksum...
|
||||
rdchk ldy IO.D2.RData,x now verify checksum...
|
||||
bpl rdchk
|
||||
|
||||
eor dnib,y must be equal...
|
||||
@ -465,23 +503,28 @@ nxttwo ldx #$56 now combine 2-bit group with 6 bit group
|
||||
twobit dex all done with this group?
|
||||
bmi nxttwo branch if so.
|
||||
|
||||
lda (dbuf),y
|
||||
lda (dbuf),y
|
||||
lsr nbuf1,x
|
||||
rol
|
||||
lsr nbuf1,x
|
||||
rol
|
||||
sta (dbuf),y
|
||||
sta (dbuf),y
|
||||
iny
|
||||
bne twobit
|
||||
|
||||
zzzend .EQ *
|
||||
ldx slotz
|
||||
*--------------------------------------
|
||||
zzzend ldx slotz
|
||||
clc indicate good read.
|
||||
rts
|
||||
|
||||
chg5 .EQ *-chg5a
|
||||
goseek jmp seek
|
||||
dend .BS $a00-zzstart-5,0
|
||||
chg5 .EQ *-chg5a
|
||||
goseek jmp seek
|
||||
.ED
|
||||
*--------------------------------------
|
||||
.LIST ON
|
||||
BB.End .EQ *
|
||||
BB.Free .EQ $a00-*
|
||||
.BS BB.Free
|
||||
.LIST OFF
|
||||
.EP
|
||||
*--------------------------------------
|
||||
MAN
|
||||
|
||||
@ -28,36 +28,35 @@ D2MoveHead >PULLB MoveTo
|
||||
jsr CheckDiskII
|
||||
bcs .9
|
||||
|
||||
.1 lda MoveTo
|
||||
cmp MoveFrom
|
||||
.1 lda MoveFrom
|
||||
cmp MoveTo
|
||||
beq .8
|
||||
|
||||
bcc .2
|
||||
bcs .2
|
||||
|
||||
* sec
|
||||
lda #0 MoveFrom>MoveTo, must move in
|
||||
bra .3
|
||||
inc MoveFrom>MoveTo, must move in
|
||||
|
||||
.HS B0 BCS
|
||||
|
||||
.2 lda #$ff MoveFrom<MoveTo, must move out
|
||||
.2 dec MoveFrom<MoveTo, must move out
|
||||
|
||||
.3 adc MoveFrom
|
||||
sta MoveFrom
|
||||
sta MoveFrom
|
||||
|
||||
jsr XRW.PhaseOn
|
||||
jsr D2.PhaseOn
|
||||
|
||||
lda #$30
|
||||
jsr XRW.Wait100msA Trash X
|
||||
lda #30
|
||||
jsr D2.Wait100msA Trash X
|
||||
|
||||
jsr XRW.AllPhaseOff
|
||||
jsr D2.AllPhaseOff
|
||||
|
||||
lda #$70
|
||||
jsr XRW.Wait100msA Trash X
|
||||
lda #10
|
||||
jsr D2.Wait100msA Trash X
|
||||
bra .1
|
||||
|
||||
.8 clc
|
||||
.9 rts
|
||||
*--------------------------------------
|
||||
XRW.PhaseOn pha
|
||||
D2.PhaseOn pha
|
||||
jsr .7
|
||||
pla
|
||||
|
||||
@ -72,26 +71,21 @@ XRW.PhaseOn pha
|
||||
lda IO.D2.Ph0On,x turn on one phase
|
||||
.8 rts
|
||||
*--------------------------------------
|
||||
XRW.AllPhaseOff ldx Slotn0
|
||||
D2.AllPhaseOff ldx Slotn0
|
||||
lda IO.D2.Ph0Off,x make sure all motor phases are off.
|
||||
lda IO.D2.Ph1Off,x
|
||||
lda IO.D2.Ph2Off,x
|
||||
lda IO.D2.Ph3Off,x
|
||||
rts
|
||||
*--------------------------------------
|
||||
XRW.Wait100msA
|
||||
.1 ldx #$11 delay 86 usec
|
||||
D2.Wait100msA sec
|
||||
|
||||
.1 ldx #15
|
||||
|
||||
.2 dex
|
||||
bne .2
|
||||
|
||||
inc montimel
|
||||
bne .3
|
||||
|
||||
inc montimeh
|
||||
|
||||
.3 sec
|
||||
sbc #$01
|
||||
sbc #1
|
||||
bne .1
|
||||
|
||||
rts
|
||||
@ -317,21 +311,21 @@ PutData stz Checksum
|
||||
.3 lda (ZPPtr1),y
|
||||
and #3
|
||||
tax
|
||||
lda XRW.XX000000,x
|
||||
lda D2.XX000000,x
|
||||
pha
|
||||
|
||||
lda (ZPPtr3),y
|
||||
and #3
|
||||
tax
|
||||
pla
|
||||
ora XRW.00XX0000,x
|
||||
ora D2.00XX0000,x
|
||||
pha
|
||||
|
||||
lda (ZPPtr4),y
|
||||
and #3
|
||||
tax
|
||||
pla
|
||||
ora XRW.0000XX00,x
|
||||
ora D2.0000XX00,x
|
||||
|
||||
eor Checksum
|
||||
sta Checksum
|
||||
|
||||
@ -67,6 +67,7 @@ CS.START cld
|
||||
.DA D2TrkWriteNIB
|
||||
L.TrkWriter .DA TrkWriter
|
||||
L.ProDOS.Boot .DA ProDOS.Boot
|
||||
L.ProDOSFX.Boot .DA ProDOSFX.Boot
|
||||
.DA 0
|
||||
*--------------------------------------
|
||||
LIB.LOAD
|
||||
@ -145,7 +146,7 @@ BuildProDOSCat >PULLW ZPPtr1 DstBuf
|
||||
bpl .1
|
||||
|
||||
* Blk 0 : ProDOS Boot Code
|
||||
>LDYA L.ProDOS.Boot
|
||||
>LDYA L.ProDOSFX.Boot
|
||||
>STYA ZPPtr3
|
||||
|
||||
ldy #0
|
||||
@ -387,7 +388,7 @@ Nib2FC .HS 0004
|
||||
.HS 080C
|
||||
.HS FF
|
||||
.HS 101418
|
||||
XRW.XX000000 .HS 008040C0FFFF used in fast prenib as lookup for 2-bit quantities.
|
||||
D2.XX000000 .HS 008040C0FFFF used in fast prenib as lookup for 2-bit quantities.
|
||||
.HS 1C20
|
||||
.HS FFFFFF
|
||||
.HS 24282C3034
|
||||
@ -395,7 +396,7 @@ XRW.XX000000 .HS 008040C0FFFF used in fast prenib as lookup for 2-bit quantitie
|
||||
.HS 383C4044484C
|
||||
.HS FF
|
||||
.HS 5054585C606468
|
||||
XRW.00XX0000 .HS 00201030 used in fast prenib.
|
||||
D2.00XX0000 .HS 00201030 used in fast prenib.
|
||||
endmrks .HS DEAAEB table using 'unused' nibbles ($C4,$C5,$C6,$C7)
|
||||
.HS FFFFFFFF
|
||||
.HS 6C
|
||||
@ -407,7 +408,7 @@ endmrks .HS DEAAEB table using 'unused' nibbles ($C4,$C5,$C6,$C7)
|
||||
.HS 8084
|
||||
.HS FF
|
||||
.HS 888C9094989CA0
|
||||
XRW.0000XX00 .HS 0008040C used in fast prenib.
|
||||
D2.0000XX00 .HS 0008040C used in fast prenib.
|
||||
.HS FF
|
||||
.HS A4A8AC
|
||||
.HS FF
|
||||
@ -520,6 +521,8 @@ ProDOS.Boot .HS 01.38.b0.03.4c.32.a1.86.43.c9.03.08.8a.29.70.4a
|
||||
.HS d0.e3.a0.7f.84.52.08.28.38.c6.52.f0.ce.18.08.88
|
||||
.HS f0.f5.bd.8c.c0.10.fb.00.00.00.00.00.00.00.00.00
|
||||
*--------------------------------------
|
||||
ProDOSFX.Boot .INB USR/SRC/LIB/LIBBLKDEV.S.BB
|
||||
*--------------------------------------
|
||||
* Block 2 : First DIR block
|
||||
*--------------------------------------
|
||||
VolDirHdr
|
||||
@ -555,8 +558,6 @@ TrkNum .BS 1
|
||||
VolNum .BS 1
|
||||
|
||||
MotorOn .BS 1
|
||||
montimel .BS 1
|
||||
montimeh .BS 1
|
||||
|
||||
Count .BS 2
|
||||
*--------------------------------------
|
||||
|
||||
@ -552,8 +552,9 @@ wnibl sta IO.D2.WLoad,x (5) nibl write
|
||||
*--------------------------------------
|
||||
XRW.Wait100ms lda #1
|
||||
|
||||
XRW.Wait100msA
|
||||
.1 ldx #$11 delay 86 usec
|
||||
XRW.Wait100msA sec
|
||||
|
||||
.1 ldx #13
|
||||
|
||||
.2 dex
|
||||
bne .2
|
||||
@ -563,8 +564,7 @@ XRW.Wait100msA
|
||||
|
||||
inc montimeh
|
||||
|
||||
.3 sec
|
||||
sbc #$01
|
||||
.3 sbc #$01
|
||||
bne .1
|
||||
|
||||
rts
|
||||
@ -740,29 +740,28 @@ XRW.Seek ldx XRW.UnitIndex
|
||||
sta XRW.CurrentTrack will be current track at the end
|
||||
sta XRW.D2Trk-1,x
|
||||
|
||||
.1 lda XRW.TargetQTrack
|
||||
cmp XRW.CurrentQTrack
|
||||
.1 lda XRW.CurrentQTrack
|
||||
cmp XRW.TargetQTrack
|
||||
beq .8
|
||||
|
||||
bcc .2
|
||||
bcs .2
|
||||
|
||||
* sec
|
||||
lda #0 CurrentQTrack>TargetQTrack, must move in
|
||||
bra .3
|
||||
inc CurrentQTrack>TargetQTrack, must move in
|
||||
|
||||
.2 lda #$ff CurrentQTrack<TargetQTrack, must move out
|
||||
.HS B0 BCS
|
||||
|
||||
.2 dec CurrentQTrack<TargetQTrack, must move out
|
||||
|
||||
.3 adc XRW.CurrentQTrack
|
||||
sta XRW.CurrentQTrack
|
||||
sta XRW.CurrentQTrack
|
||||
|
||||
jsr XRW.PhaseOn
|
||||
|
||||
lda #$30
|
||||
lda #30
|
||||
jsr XRW.Wait100msA Trash X
|
||||
|
||||
jsr XRW.AllPhaseOff
|
||||
|
||||
lda #$70
|
||||
lda #10
|
||||
jsr XRW.Wait100msA Trash X
|
||||
bra .1
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user