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Code Issues Projects Releases Wiki Activity

Create README for desktop disassembly

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This commit is contained in:
Joshua Bell 2017-09-17 14:52:46 -07:00
parent 51bd3081cc
commit ce7926b257
9 changed files with 133 additions and 491 deletions
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28
desktop/README.md Normal file
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@ -0,0 +1,28 @@
# DeskTop diassembly notes
## DESKTOP.SYSTEM
A short (8k) loader program. This is likely responsible for copying
the rest to a RAM card (if available), then invoking the main app.
## DESKTOP2.$F1
This is large - 111k. It includes a loader, the DeskTop app (with both
main memory and aux memory segments, filling everything from $4000 to
$FFFF (except for I/O space and ProDOS), and still having more code -
probably the disk copy code which is swapped in dynamically.
The file is broken down into multiple segments:
* segment 0: load - offset $0000, length $0580, loaded at $2000
* segment 1: aux1 - offset $0580, length $8000, loaded at $4000 (through $BFFF)
* segment 2: aux2 - offset $8580, length $1D00, loaded at $D000 (through $ECFF)
* segment 3: aux2 - offset $A280, length $0500, loaded at $FB00 (through $FFFF)
* segment 4: main - offset $A780, length $7F00, loaded at $4000 (through $BEFF)
* segment 5: _TBD_ - 38k so must be further subdivided.
Much of the space is data:
* API jump table at $40E5, param details at $4184
* Font is at $8800

0
desktop/da.sh → desktop/go.sh
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10
desktop/infos/s0_loader.info
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@ -29,10 +29,6 @@ LABEL { NAME "FOUT"; ADDR $ED34; };
LABEL { NAME "COUT"; ADDR $FDED; };
#RANGE { START $8800; END $939E; TYPE ByteTable; };
#RANGE { START $DA20; END $DAFF; TYPE ByteTable; };
#RANGE { START $E690; END $E6BF; TYPE ByteTable; };
#RANGE { START $FB00; END $FFFF; TYPE ByteTable; };
RANGE { START $201d; END $201d; TYPE ByteTable; };
RANGE { START $201e; END $201f; TYPE AddrTable; };
RANGE { START $20b9; END $20b9; TYPE ByteTable; };
@ -55,3 +51,9 @@ RANGE { START $228d; END $228d; TYPE ByteTable; };
RANGE { START $228e; END $228f; TYPE AddrTable; };
RANGE { START $22b8; END $22b8; TYPE ByteTable; };
RANGE { START $22b9; END $22ba; TYPE AddrTable; };
RANGE { START $2000; END $2017; TYPE Code; };
RANGE { START $202A; END $206A; TYPE ByteTable; };
RANGE { START $2187; END $224F; TYPE ByteTable; };
RANGE { START $2368; END $23FF; TYPE ByteTable; };
RANGE { START $2545; END $257F; TYPE ByteTable; };

39
desktop/notes.txt
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@ -1,39 +0,0 @@
DESKTOP2.$F1
s0_loader file / memory
LOADER - $0 / $2000 MAIN
THRU - $57F / $257F MAIN
s1_aux1
MATCH - $580 / $4000 AUX
THRU - $857F / $BFFF AUX
... skips $C000 - $CFFF (I/O Space)
s2_aux2
MATCH - $8580 / $D000 AUX
THRU - $A27F / $ECFF AUX
... skips $ED00 - $FAFF (???)
s3_aux3
MATCH - $A280 / $FB00 AUX
THRU - $A77F / $FFFF AUX
s4_main1
MATCH - $A780 / $4000 MAIN
THRU - $1267F / $BEFF MAIN
... skips $BF00 - $BFFF (ProDOS Buffer)
... skips $C000 - $CFFF (I/O Space)
... skips $D000 - $FFFF (ProDOS)
So rest must be loaded on demand
$12680 / ???
... (includes strings about Selector List, Disk Copy, SOS, ...)
$1BCDF

539
desktop/s0_loader.s
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@ -1,6 +1,6 @@
.org $2000
; da65 V2.16 - Git f5e9b401
; Created: 2017-09-17 11:30:59
; Created: 2017-09-17 12:00:53
; Input file: orig/DESKTOP2_s0_loader
; Page: 1
@ -18,7 +18,6 @@ L03B3 := $03B3
L03C1 := $03C1
L03E5 := $03E5
L0800 := $0800
L0A8D := $0A8D
L1031 := $1031
L1039 := $1039
L103B := $103B
@ -26,17 +25,8 @@ L1044 := $1044
L10F4 := $10F4
L1129 := $1129
L118B := $118B
L148D := $148D
L3000 := $3000
A2D := $4000
L616F := $616F
L6544 := $6544
L6552 := $6552
L6964 := $6964
L6E61 := $6E61
L7808 := $7808
L7ECA := $7ECA
L8D44 := $8D44
UNKNOWN_CALL := $8E00
MLI := $BF00
RAMRDOFF := $C002
@ -46,7 +36,6 @@ RAMWRTON := $C005
ALTZPOFF := $C008
ALTZPON := $C009
LCBANK1 := $C08B
LC100 := $C100
LC300 := $C300
AUXMOVE := $C311
XFER := $C314
@ -63,19 +52,22 @@ LFC58 := $FC58
COUT := $FDED
LFE89 := $FE89
LFE93 := $FE93
LFF69 := $FF69
L2000: lda $C083
L2003: lda $C083
ldy #$00
L2008: .byte $B9
L2009: rmb2 $20
L200B: .byte $99
L200C: brk
L200D: .byte $D1
L2008:
L2009 := * + 1
L200A := * + 2
lda L2027,y
L200B:
L200C := * + 1
L200D := * + 2
sta $D100,y
L200E: lda L2127,y
L2011: .byte $99
brk
L2013: cmp ($88)
L2011:
L2013 := * + 2
sta $D200,y
L2014: dey
bne L2008
lda $C082
jsr MLI
@ -90,46 +82,17 @@ L2022: brk
brk
L2027: jmp L1044
brk
eor $756F
L202E: .byte $73
adc $20
.byte $44
adc $73
.byte $6B
brk
clc
.byte $4C
.byte $6F
.byte $00,$4D,$6F,$75
L202E: .byte $73,$65,$20,$44,$65,$73,$6B,$00
.byte $18,$4C,$6F
L2039: .byte $61
L203A: stz $69
ror L2067
eor ($70,x)
bvs L20AF
adc $20
L2045: eor #$49
jsr L6544
.byte $73
L204B: .byte $6B
L204C: .byte $54
bbr6 $70,L2058
.byte $44
adc $73
.byte $6B
.byte $54
bbr6 $70,L208A
L2058: tsb $00
brk
asl $0400,x
brk
brk
ora ($00,x)
ora ($90,x)
ora ($03),y
plp
L2067: bpl L2069
L2069: inc a
brk
L203A: .byte $64,$69,$6E,$67,$20,$41,$70,$70
.byte $6C,$65,$20
L2045: .byte $49,$49,$20,$44,$65,$73
L204B: .byte $6B,$54,$6F,$70,$08,$44,$65,$73
.byte $6B,$54,$6F,$70,$32,$04,$00,$00
.byte $1E,$00,$04,$00,$00,$01,$00,$01
.byte $90,$11,$03,$28,$10,$00,$1A,$00
lda $C082
jsr LFE93
jsr LFE89
@ -139,9 +102,9 @@ L2069: inc a
jsr LC300
L2080: jsr LFC58
lda #$00
L2085: sta $C035
sta $C035
lda #$40
L208A: sta RAMWRTON
sta RAMWRTON
sta $0100
sta $0101
sta RAMWRTOFF
@ -154,16 +117,15 @@ L208A: sta RAMWRTON
lsr a
sta $24
ldy #$00
lda $1010,y
L20A8: lda $1010,y
ora #$80
.byte $20
.byte $ED
L20AF: sbc $CCC8,x
bbr0 $10,L2085
sbc ($20)
brk
bbs3 $CC,L20F4
.byte $10
jsr COUT
iny
cpy $100F
bne L20A8
jsr MLI
.byte $CC
.addr L1039
ldx #$17
lda #$01
sta $BF58,x
@ -189,12 +151,9 @@ L20E1: lda #$FF
sta $1189
lda $03FF
sta $118A
.byte $AD
.byte $83
L20F4: cpy #$AD
.byte $83
cpy #$A0
brk
lda $C083
lda $C083
ldy #$00
L20FA: lda $1000,y
sta $D100,y
lda $1100,y
@ -264,170 +223,34 @@ L2179: lda $C000
bne L2176
jmp L1044
plp
eor #$6E
.byte $73
adc $72
stz $20,x
stz $68,x
adc $20
.byte $73
adc $7473,y
adc $6D
jsr L6964
.byte $73
.byte $6B
jsr L6E61
stz $20
bvc L2217
adc $73
.byte $73
jsr L6552
stz $75,x
adc ($6E)
rol a:$00
sta $06
jmp LFF69
brk
brk
brk
brk
brk
brk
brk
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brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
jmp L204C
.byte $03
clc
jsr L3000
brk
tsb $00
brk
brk
brk
brk
brk
brk
ora ($00,x)
.byte $02
brk
bra L221C
L2217: brk
php
.byte $44
adc $73
L221C: .byte $6B
.byte $54
bbr6 $70,L2253
brk
bbr3 $00,L2265
brk
rti
brk
rti
brk
php
bcc L222F
brk
rti
L222F: brk
bne L2232
L2232: .byte $FB
brk
rti
brk
php
bcc L223B
brk
.byte $80
L223B: brk
ora $0500,x
brk
bbr7 $00,L224B
rts
ora ($01,x)
.byte $02
.byte $02
brk
brk
brk
L224B: asl $A2
rmb1 $A9
brk
.byte $28,$49,$6E,$73,$65,$72,$74,$20
.byte $74,$68,$65,$20,$73,$79,$73,$74
.byte $65,$6D,$20,$64,$69,$73,$6B,$20
.byte $61,$6E,$64,$20,$50,$72,$65,$73
.byte $73,$20,$52,$65,$74,$75,$72,$6E
.byte $2E,$00,$00,$85,$06,$4C,$69,$FF
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$4C,$4C,$20,$03,$18,$20,$00
.byte $30,$00,$04,$00,$00,$00,$00,$00
.byte $00,$00,$01,$00,$02,$00,$80,$05
.byte $00,$08,$44,$65,$73,$6B,$54,$6F
.byte $70,$32,$00,$3F,$00,$40,$00,$40
.byte $00,$40,$00,$08,$90,$02,$00,$40
.byte $00,$D0,$00,$FB,$00,$40,$00,$08
.byte $90,$02,$00,$80,$00,$1D,$00,$05
.byte $00,$7F,$00,$08,$60,$01,$01,$02
.byte $02,$00,$00,$00,$06,$A2,$17,$A9
.byte $00
L2250: sta $BF59,x
L2253: dex
dex
bpl L2250
php
sei
@ -438,11 +261,11 @@ L2253: dex
and #$FF
beq L2264
brk
L2264: .byte $AD
L2265: php
jsr L148D
jsr L0A8D
jsr L7808
L2264: lda L2008
sta L2014
sta L200A
php
sei
jsr MLI
.byte $CE
.addr L2013
@ -563,158 +386,25 @@ L2352: lda ($06),y
sta RAMWRTOFF
rts
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
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brk
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
pha
lda $C061
and $C062
@ -872,50 +562,11 @@ L24E5: jsr L02E6
jsr COUT
rts
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
.byte $1B
adc $1B
.byte $54
and ($36),y
ora #$4C
jsr L8D44
ora #$5A
sta $1B00
lsr $541B
and ($34)
brk
jmp LC100
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$1B,$65,$1B,$54,$31,$36
.byte $09,$4C,$20,$44,$8D,$09,$5A,$8D
.byte $00,$1B,$4E,$1B,$54,$32,$34,$00
.byte $4C,$00,$C1,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00

2
desktop/s1_aux1.s
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@ -1,6 +1,6 @@
.org $4000
; da65 V2.16 - Git f5e9b401
; Created: 2017-09-17 11:30:59
; Created: 2017-09-17 12:00:53
; Input file: orig/DESKTOP2_s1_aux1
; Page: 1

2
desktop/s2_aux2.s
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@ -1,6 +1,6 @@
.org $D000
; da65 V2.16 - Git f5e9b401
; Created: 2017-09-17 11:30:59
; Created: 2017-09-17 12:00:53
; Input file: orig/DESKTOP2_s2_aux2
; Page: 1

2
desktop/s3_aux3.s
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@ -1,6 +1,6 @@
.org $FB00
; da65 V2.16 - Git f5e9b401
; Created: 2017-09-17 11:31:00
; Created: 2017-09-17 12:00:53
; Input file: orig/DESKTOP2_s3_aux3
; Page: 1

2
desktop/s4_main1.s
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@ -1,6 +1,6 @@
.org $4000
; da65 V2.16 - Git f5e9b401
; Created: 2017-09-17 11:31:00
; Created: 2017-09-17 12:00:53
; Input file: orig/DESKTOP2_s4_main1
; Page: 1