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franklin/ace500_c000_cfff.s
Joshua Bell 3031b1cc61 misc disasm
2021-11-13 09:26:02 -08:00

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;;; ============================================================
;;; Franklin ACE 2X00 ROM V6.0 Disassembly
;;;
;;; First $1000 bytes of U2 ROM (usually banked in $C000-$CFFF)
;;;
;;; Build with CC65's ca65 assembler
;;; ============================================================
.setcpu "65C02"
.include "opcodes.inc"
.feature string_escapes
;;; ============================================================
;;; Patches
;;; Set to 1 to include preliminary fixes for:
;;; * MouseText mode failing to exist on $18 output.
;;; * MouseText displaying if $40-$5F sent to COUT.
INCLUDE_PATCHES = 0
;;; ============================================================
;;; Equates
;;; Zero Page
WNDLFT := $20
WNDWDTH := $21
WNDTOP := $22
WNDBTM := $23
CH := $24
CV := $25
BASL := $28
BASH := $29
BAS2L := $2A
BAS2H := $2B
INVFLG := $32
CSWL := $36
CSWH := $37
KSWL := $38
KSWH := $39
A1L := $3C
A1H := $3D
A2L := $3E
A2H := $3F
A4L := $42
A4H := $43
RNDL := $4E
RNDH := $4F
;;; Page 3 Vectors
XFERVEC := $3ED
L03F0 := $3F0 ; ???
L03FE := $3FE ; ???
;;; Screen Holes
SAVEA := $4F8
SAVEX := $578
SAVEY := $478
OLDCH := $47B
MODE := $4FB
;; Bit 7 = Escape Mode
;; Bit 6 = MouseText active
;; Bit 5 = ??? set when "normal"
;; Bit 4 = ??? set when "normal"
;; Bit 3 = ??? unused ???
;; Bit 2 = ??? unused ???
;; Bit 1 = ??? used for ???
;; Bit 0 = ??? used for ???
M_ESC = %10000000
M_MOUSE = %01000000
M_NORMAL= %00110000
M_INACTIVE = $FF ; When firmware is inactive
OURCH := $57B
OURCV := $5FB
CHAR := $67B
XCOORD := $6FB
TEMP1 := $77B ; Unused
OLDBASL := $77B
TEMP2 := $7FB
OLDBASH := $7FB
;;; I/O Soft Switches
KBD := $C000
CLR80COL:= $C000
SET80COL:= $C001
RDMAINRAM := $C002
RDCARDRAM := $C003
WRMAINRAM := $C004
WRCARDRAM := $C005
ALTZPOFF:= $C008
ALTZPON := $C009
CLR80VID:= $C00C
SET80VID:= $C00D
CLRALTCHAR := $C00E
SETALTCHAR := $C00F
KBDSTRB := $C010
RDLCBNK2:= $C011
RDLCRAM := $C012
RDRAMRD := $C013
RDRAMWRT:= $C014
RDCXROM := $C015
RDALTZP := $C016
RDC3ROM := $C017
RD80COL := $C018
RDVBL := $C019
RDTEXT := $C01A
RDPAGE2 := $C01C
ALTCHARSET := $C01E
RD80VID := $C01F
TXTPAGE1:= $C054
TXTPAGE2:= $C055
RD63 := $C063
PTRIG := $C070
ROMIN := $C081
ROMIN2 := $C082
LCBANK2 := $C083
LCBANK1 := $C08B
;;; Documented Firmware Entry Points
C3KeyIn := $C305
C3COut1 := $C307
AUXMOVE := $C311
XFER := $C314
CLRROM := $CFFF
;;; Monitor ROM
BELLB := $FBE2
SETWND := $FB4B
SETKBD := $FE89
SETVID := $FE93
MON_VTAB:= $FC22
VTABZ := $FC24
CLREOP := $FC42
HOME := $FC58
CLREOL := $FC9C
CLREOLZ := $FC9E
COUT := $FDED
COUT1 := $FDF0
MON_SAVE:= $FF4A
;;; ============================================================
.org $C000
;;; ============================================================
;;; Page $C0 - Unused (garbage data?)
;;; ============================================================
.res $100, 0
;;; ============================================================
;;; Page $C1 - Parallel Port Firmware
;;; ============================================================
.scope pageC1
LC100: bra LC111
LC102: bra LC107
LC104: nop
sec ; $Cn05 = $38 Pascal 1.1 sig
nop
LC107: clc ; $Cn07 = $18 Pascal 1.1 sig
clv
bra LC114
;; Signature bytes
.byte $01 ; Pascal 1.1 signature
.byte $31 ; $31 = Super Serial Card (!)
;; Pascal 1.1 Firmware Protocol Table
.byte .lobyte(LC12B)
.byte .lobyte(LC133)
.byte .lobyte(LC136)
.byte .lobyte(LC13E)
LC111: bit LC135
LC114: jsr LC1D6
pha
phx
phy
sta $0679
bvc LC122
jsr $C806
LC122: jsr $C83C
ply
plx
pla
LC128: jmp $C5FA
LC12B: jsr LC1D6
jsr $C897
bra LC128
LC133: ldx #$03
LC135: rts
LC136: jsr LC1D6
jsr $C89D
bra LC128
LC13E: jsr LC1D6
jsr $C8A5
bra LC128
LC146: lda #$00
bit RDALTZP
bpl LC14F
ora #$80
LC14F: bit RDRAMRD
bpl LC156
ora #$40
LC156: bit RDRAMWRT
bpl LC15D
ora #$20
LC15D: bit RDLCBNK2
bpl LC164
ora #$10
LC164: bit RDLCRAM
bpl LC16B
ora #$08
LC16B: bit RD80COL
bpl LC177
bit RDPAGE2
bpl LC177
ora #$04
LC177: rts
LC178: phx
asl a
asl a
bcc LC180
sta RDCARDRAM
LC180: asl a
bcc LC186
sta WRCARDRAM
LC186: asl a
bcc LC193
asl a
bcc LC18F
ldx #$03
.byte $2C
LC18F: ldx #$01
bra LC19B
LC193: asl a
bcc LC199
ldx #$0B
.byte $2C
LC199: ldx #$09
LC19B: bit $C080,x
bit $C080,x
asl a
bcc LC1A7
sta TXTPAGE2
LC1A7: plx
rts
LC1A9: bit #$04
beq LC1B0
sta TXTPAGE1
LC1B0: sta RDMAINRAM
sta WRMAINRAM
bit ROMIN
rts
brk
brk
brk
brk
brk
brk
brk
LC1C1: brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
jsr LC128
jsr COUT1
LC1D6: php
sei
pha
lda #$C1
sta $07F8
sta $C0BA
sta $C0B8
sta CLRROM
pla
plp
rts
brk
brk
brk
brk
brk
brk
brk
brk
LC1F2: plx
bit CLRROM
rti
LC1F7: jmp LC146
LC1FA: jmp LC178
LC1FD: jmp LC1A9
.endscope
;;; ============================================================
;;; Page $C2 - Serial Port Firmware
;;; ============================================================
.scope pageC2
bit $C5A7
bra LC211
sec ; $Cn05 = $38 Pascal 1.1 sig
.byte OPC_BCC ; never taken
clc ; $Cn07 = $18 Pascal 1.1 sig
clv
bra LC211
;; Signature bytes
.byte $01 ; Pascal 1.1 signature
.byte $31 ; $31 = Super Serial Card
;; Pascal 1.1 Firmware Protocol Table
.byte .lobyte(LC214)
.byte .lobyte(LC217)
.byte .lobyte(LC21A)
.byte .lobyte(LC21D)
LC211: jmp $C500
LC214: jmp $C51F
LC217: jmp $C528
LC21A: jmp $C530
LC21D: jmp $C538
;; ???
LC220: lda $077C
and #$F1
sta $077C
sec
lda RDVBL
bmi @l2
sta PTRIG
lda #$08
tsb $077C
clc
bit $067C
bpl @l1
lda #$20
tsb $077C
lda $07FC
and #$02
beq @l1
tsb $077C
stz $067C
@l1: bit RD63
bmi @l2
lda #$04
tsb $077C
@l2: lda RDCXROM
ora RDC3ROM
bmi @l3
jmp @l12
@l3: sta $067C
lda RDCXROM
sta $C048 ; ???
bpl @l7
txa
bpl @l5
lda $067D
cmp $047C
bne @l4
lda $077D
cmp $057C
beq @l11
@l4: inc $047C
bne @l11
inc $057C
bra @l11
@l5: lda $047D
cmp $047C
bne @l6
lda $057D
cmp $057C
beq @l11
@l6: sec
lda $047C
sbc #$01
sta $047C
lda $057C
sbc #$00
sta $057C
bra @l11
@l7: tya
bmi @l9
lda $06FD
cmp $04FC
bne @l8
lda $07FD
cmp $05FC
beq @l11
@l8: inc $04FC
bne @l11
inc $05FC
bra @l11
@l9: lda $04FD
cmp $04FC
bne @l10
lda $05FD
cmp $05FC
beq @l11
@l10: sec
lda $04FC
sbc #$01
sta $04FC
lda $05FC
sbc #$00
sta $05FC
@l11: clc
@l12: bcs @l13
lda $077C
and $07FC
beq @l13
sec
@l13: rts
;; ???
ldx $EB
lda $0342,x
.byte $8D
.byte $12
.endscope
;;; ============================================================
;;; Page $C3 - Enhanced 80 Column Firmware
;;; ============================================================
;; Init
LC300: bit SETV ; V = init
bra MainEntry
;; Input
.assert * = C3KeyIn, error, "Entry point mismatch"
LC305: sec ; $Cn05 = $38 Pascal 1.1 sig
.byte OPC_BCC ; never taken; skip next byte
;; Output
.assert * = C3COut1, error, "Entry point mismatch"
LC307: clc ; $Cn07 = $18 Pascal 1.1 sig
clv
bra MainEntry
;; Signature bytes
.byte $01 ; Pascal 1.1 signature
.byte $88 ; $88 = 80 Column Card
;; Pascal 1.1 Firmware Protocol Table
.byte <JPINIT
.byte <JPREAD
.byte <JPWRITE
.byte <JPSTAT
;; AUXMOVE
.assert * = AUXMOVE, error, "Entry point mismatch"
jmp JumpAuxMove
;; XFER
.assert * = XFER, error, "Entry point mismatch"
jsr pageC5_DoBankC5
jmp $CC03 ; ???
;;; ============================================================
;;; Pascal Entry Points
JPINIT: jsr ClearROM
jsr PascalInit
LC320: jmp pageC5_DoBankC5
JPREAD: jsr ClearROM
jsr PascalRead
bra LC320
JPWRITE:jsr ClearROM
jsr PascalWrite
bra LC320
JPSTAT: jsr ClearROM
jsr PascalStatus
bra LC320
JumpAuxMove:
jsr pageC5_DoBankC5
jmp $CC06
;;; ============================================================
;;; Main Entry Points
MainEntry:
jsr ClearROM
sta SAVEA
stx SAVEX
sty SAVEY
pha
bvc l1
;; Init
jsr LC806
clc
l1: php
jsr LC9B4
plp
pla
bcc l7 ; Input or output?
;; Input
ldx SAVEX
beq l2
dex
lda $0678
cmp #$88 ; left?
beq l2
cmp $0200,x
bne l5
sta $0200,x
l2: jsr LC96F
cmp #$9B ; escape?
beq EscapeMode
cmp #$8D ; return?
bne l3
pha
jsr DoClearEOL
pla
l3: cmp #$95 ; right?
bne l4
ldy CH
jsr LC9A8
l4: sta $0678
bra l6
l5: jsr LC822
stz $0678
l6: bra l8
;; Output
l7: jsr OutputChar
lda SAVEA
l8: ldx SAVEX
ldy CH
sty OURCH
sty XCOORD
ldy SAVEY
jmp pageC5_DoBankC5
;;; ============================================================
;;; Escape Mode
EscapeMode:
lda #M_ESC
tsb MODE
jsr LC822
jsr ProcessEscapeModeKey
cmp #$98
beq l4
lda MODE
bmi EscapeMode
bra l2
;;; ============================================================
ClearROM:
php
sei
pha
sta $C0BA ; ???
sta CLRROM
lda #$C3
sta $07F8
pla
plp
SETV: rts
;;; ============================================================
brk
brk
brk
brk
brk
brk
brk
jsr pageC5_DoBankC5
jmp $CC00
LC3E2: plx
bit CLRROM
rti
brk
jsr ClearROM
jmp LCE0D
jsr ClearROM
jmp LCDEC
LC3F4: jsr ClearROM
jmp LCCB2
LC3FA: jsr ClearROM
jmp LCCF5
;;; ============================================================
;;; Page $C4 - Mouse Card Firmware
;;; ============================================================
.scope pageC4
bit SETV
bra Init
sec
.byte OPC_BCC ; never taken; skip next byte
clc
clv
bra Init
;; Signature bytes
.byte $01, $20 ; $20 = Mouse
;; Pascal 1.1 Firmware Protocol Table
.byte .lobyte(PascalEP)
.byte .lobyte(PascalEP)
.byte .lobyte(PascalEP)
.byte .lobyte(PascalEP)
.byte $00 ; "optional routines follow"
;; Mouse routine entry points
.byte .lobyte(SetMouse)
.byte .lobyte(ServeMouse)
.byte .lobyte(ReadMouse)
.byte .lobyte(ClearMouse)
.byte .lobyte(PosMouse)
.byte .lobyte(ClampMouse)
.byte .lobyte(HomeMouse)
.byte .lobyte(InitMouse)
;; ???
.byte .lobyte(PascalEP)
.byte .lobyte(LC45F)
Init: jsr pageC5_DoBankC5
bvc @l1
jsr $C806
@l1: bcc @l2
jmp $C838
@l2: jmp LC825
PascalEP:
ldx #$03
SETV: rts
SetMouse:
jsr pageC5_DoBankC5
jmp $C8D4
ServeMouse:
jsr pageC5_DoBankC5
jmp $C916
ReadMouse:
jsr pageC5_DoBankC5
jmp $C922
ClearMouse:
jsr pageC5_DoBankC5
jmp $C958
PosMouse:
jsr pageC5_DoBankC5
jmp $C967
ClampMouse:
jsr pageC5_DoBankC5
jmp $C969
HomeMouse:
jsr pageC5_DoBankC5
jmp $C93E
InitMouse:
jsr pageC5_DoBankC5
jmp $C8AC
LC45F: ldx $C066 ; ???
ldy $C067
jmp $C220
LC468: jsr pageC5_DoBankC5
jmp $C9A0
.res $C4A0 - *, 0
;; ???
LC4A0: cld
phx
phy
pha
ldx $C066
ldy $C067
lda $C0BC
pha
sta $C0B9
jmp LC700
;; ???
pla
bpl LC4BE
sta ALTZPON
ldx $0101
txs
LC4BE: ldx $07FF
pla
jsr $C1FA
pla
bmi LC4CB
sta $C0B8
LC4CB: sta $C0BA
stx $07F8
pla
ply
cpx #$C1
beq LC4E4
cpx #$C3
beq LC4E7
cpx #$C5
beq LC4EA
plx
sta $C0BB
rti
LC4E4: jmp $C1F2
LC4E7: jmp LC3E2
LC4EA: jmp pageC5_LC5F5
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
LC4F8: jmp LC468
.byte $D6 ; $CnFB = $D6 mouse signature
.byte $00
jmp InitMouse
.endscope
;;; ============================================================
;;; Page $C5
;;; ============================================================
.scope pageC5
LC500: jsr BankC5
sta $067A
phx
phy
pha
bvc LC50E
jsr $C806
LC50E: bcc LC516
jsr $C908
plx
bra LC51A
LC516: jsr $C83B
pla
LC51A: ply
plx
jmp BankC8
jsr BankC5
jsr $C8C7
jmp BankC8
jsr BankC5
jsr $C8CD
bra BankC8
jsr BankC5
jsr $C8D2
bra BankC8
jsr BankC5
jsr $C8DA
bra BankC8
jsr BankC8
ora #$80
jsr COUT1
bra BankC5
jsr BankC8
ora #$80
jsr COUT
bra BankC5
jsr BankC8
jsr LC3F4
bra BankC5
jsr BankC8
jsr LC3FA
and #$7F
bra BankC5
jsr BankC8
jsr CLREOLZ
bra BankC5
jsr BankC8
jsr HOME
bra BankC5
jsr BankC8
jsr LC300
bra BankC5
jsr BankC8
jsr pageC4::LC4F8
bra BankC5
jsr BankC8
jsr pageC7_LC7FD
bra BankC5
jsr BankC8
jsr VTABZ
;; Fall through
;;; ============================================================
;;; Hypothesis: This banks in a special "C5" C800-CFFF
BankC5: php
sei
pha
lda #$C5
sta $07F8
sta $C0BA
sta $C0B8
sta CLRROM
pla
plp
rts
;;; ============================================================
;;; Hypothesis: This banks in a special "C8" C800-CFFF
BankC8: php
sei
pha
lda #$C8
sta $07F8
sta $C0BB
sta $C0B9
pla
plp
rts
;;; ============================================================
jsr BankC8
LC5BC: bit $C1C1
bmi LC5BC
sta $C090
bra BankC5
LC5C6: jsr BankC5
jsr $C9A5
bra BankC8
.res $C5F5 - *, 0
LC5F5: plx
bit CLRROM
rti
;;; ============================================================
DoBankC5:
jmp BankC8
;;; ============================================================
jmp LC5C6
.endscope
pageC5_DoBankC5 := pageC5::DoBankC5
pageC5_LC5F5 := pageC5::LC5F5
;;; ============================================================
;;; Page $C6 - Disk II Firmware
;;; ============================================================
.scope pageC6
bit $20 ; $Cn01 = $20 ProDOS device sig
cpy $00 ; $Cn03 = $00 ProDOS device sig
ldx #$03 ; $Cn05 = $03 ProDOS device sig
asl A1L
jsr pageC5::DoBankC5
ldy #$69
LC60D: lda $CF26,y
sta $036C,y
dey
bpl LC60D
ldx #$60
LC618: inc BAS2H
cpx BAS2H
bne LC618
jsr $CEA6
LC621: dec $41
bne LC621
LC625: dec A1H
bne LC625
LC629: dec $26
bne LC629
LC62D: dec $27
lda $27
cmp #$08
bne LC62D
.res $C65C - *, ::OPC_NOP
pha
nop
nop
nop
nop
nop
nop
bra LC683
.res $C683 - *, ::OPC_NOP
LC683: pla
LC684: jsr pageC5::DoBankC5
jsr LCE00
bra LC6EA
.res $C6A6 - *, 0
ldy #$56 ; ???
sty A1L
sec
clv
jmp $CE51
.res $C6EA - *, ::OPC_NOP
LC6EA: nop
lda A1H
inc a
sta A1H
inc $27
cmp $0800
bcc LC684
ldy #$00
ldx BAS2H
jmp $0801
.byte $DE
.byte $00 ; $00 = Disk II, 16-Sector
.endscope
;;; ============================================================
;;; Page $C7 - ???
;;; ============================================================
LC700:
.scope pageC7
LC700: jsr $C1F7
pha
jsr $C1FD
lda $07F8
sta $07FF
phx
tsx
txa
clc
adc #$07
tax
lda $0100,x
plx
and #$10
bne LC747
jsr $C220
bcc LC744
jsr LC784
bcc LC744
pla
pha
bpl LC739
txa
tsx
stx $0101
ldx $0100
txs
tax
sta ALTZPOFF
lda #$80
LC739: pha
lda #$C4
pha
lda #$B4
pha
php
jmp (L03FE)
LC744: jmp pageC4::LC4BE
LC747: pla
sta $44
pla
bpl LC751
lda #$01
tsb $44
LC751: pla
ply
plx
plp
jsr MON_SAVE
pla
sta $3A
ply
sty $3B
bit RDALTZP
bpl LC781
tsx
stx $0101
ldx $0100
txs
sta ALTZPOFF
sta $3A
sty $3B
ldx #$05
LC774: sta ALTZPON
lda $44,x
sta ALTZPOFF
sta $44,x
dex
bpl LC774
LC781: jmp (L03F0)
LC784: sec
lda $C0AA
tax
and #$0C
eor #$04
beq LC7E4
lda $C0A9
LC792: sta $04FA
ora #$00
bpl LC7E4
and #$08
beq LC7BD
txa
and #$03
eor #$01
bne LC7BD
lda $04FF
eor #$C2
bne LC7E4
lda $C0A8
ldx $057F
jsr LC7E5
bpl LC7B8
ldx #$00
LC7B8: stx $057F
bra LC7E3
LC7BD: .byte $2C
plx
LC7BF: tsb $50
and ($2C,x)
plx
ora $70
ora $1A10,x
lda KBD
bit $C0B4
bmi LC7D3
and #$7F
LC7D3: bit KBDSTRB
ldx $05FF
jsr LC7E5
bne LC7E0
ldx #$80
LC7E0: stx $05FF
LC7E3: clc
LC7E4: rts
LC7E5: sta WRCARDRAM
sta $0800,x
sta WRMAINRAM
inx
rts
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
brk
LC7FD: jmp LC792
.endscope
pageC7_LC7FD := pageC7::LC7FD
;;; ============================================================
.res $C800 - *, 0
;;; ============================================================
;;; Pages $C8-$CF - Enhanced 80 Column Firmware
;;; ============================================================
LC800: .byte $C3
eor $AA,x
jmp $C4A0 ; bad disasm?
LC806: lda #<LC305
sta KSWL
ldx #>LC305
stx KSWH
lda #<LC307
sta CSWL
stx CSWH
LC814: lda #M_NORMAL
sta MODE
jsr Enable80Col
jsr LCE33
jmp DoHomeAndClear
;;; ============================================================
LC822: jsr LCBE1
LC825: inc RNDL
bne LC82B
inc RNDH
LC82B: jsr LCCB8
bcc LC825
jsr LCCFB
cmp #$06
bcc LC840
and #$7F
sta CHAR
ora #$80
bra LC843
LC840: sta CHAR
LC843: pha
jsr LCBF8
pla
rts
;;; ============================================================
OutputChar:
sta CHAR
LC84C: jsr CheckPauseListing
lda MODE
and #$03 ; test low 2 bits (why???)
beq @l1
jmp LCA2F
@l1: lda CHAR
and #$7F
cmp #$20
bcc DoCtrlCharOut
ldy CH
cpy WNDWDTH
bcc @l2
jsr DoReturn
;; If MouseText is not active, make sure to map inverse
;; uppercase range to the control character range.
@l2:
.if !INCLUDE_PATCHES
lda CHAR ; char to be printed
bit INVFLG ; inverse?
.else
jsr Patch4 ; sets N flag if inverse char
nop
nop
.endif
bmi @l3 ; no, so not MT, just print it
and #$7F
bit MODE ; MT active? (bit 6 = M_MOUSE)
bvs @l3 ; yes, so skip correction
bit ALTCHARSET ; also skip correction if
bpl @l3 ; alt charset is disabled
;; If within "@ABC...XYZ[\]^_" range, map to $00-$1F
;; so it shows as inverse uppercase, not MouseText.
cmp #'@'
bcc :+
cmp #'_'+1
bcs :+
and #$1F
:
@l3: jsr LCC13
jmp DoForwardSpace
;;; ============================================================
DoNothing:
rts
;;; ============================================================
;;; Output control character handling
;; Input is char, < $20
DoCtrlCharOut:
sec
sbc #$07
bcc DoNothing
asl a
tax
jmp (@jt,x)
@jt:
.addr DoBell ; $07 Ctrl-G Bell
.addr DoBackspace ; $08 Ctrl-H Backspace
.addr DoNothing ; $09 Ctrl-I
.addr DoLineFeed ; $0A Ctrl-J Line feed
.addr DoClearEOS ; $0B Ctrl-K Clear EOS
.addr DoHomeAndClear ; $0C Ctrl-L Home and clear
.addr DoReturn ; $0D Ctrl-M Return
.addr DoNormal ; $0E Ctrl-N Normal
.addr DoInverse ; $0F Ctrl-O Inverse
.addr DoNothing ; $10 Ctrl-P
.addr Do40Col ; $11 Ctrl-Q 40-column
.addr Do80Col ; $12 Ctrl-R 80-column
.addr DoNothing ; $13 Ctrl-S
.addr DoNothing ; $14 Ctrl-T
.addr DoQuit ; $15 Ctrl-U Quit
.addr DoScroll ; $16 Ctrl-V Scroll
.addr DoScrollUp ; $17 Ctrl-W Scroll-up
.addr DoDisableMouseText ; $18 Ctrl-X Disable MouseText
.addr DoHome ; $19 Ctrl-Y Home
.addr DoClearLine ; $1A Ctrl-Z Clear line
.addr DoEnableMouseText ; $1B Ctrl-[ Enable MouseText
.addr DoForwardSpace ; $1C Ctrl-\ Forward space
.addr DoClearEOL ; $1D Ctrl-] Clear EOL
.addr DoCtrlCaret ; $1E Ctrl-^ ???
.addr DoUp ; $1F Ctrl-_ Up
;;; ============================================================
;;; For Escape key sequences
ProcessEscapeModeKey:
pha
lda #M_ESC
trb MODE
pla
and #$7F
cmp #'a'
bcc @l1
cmp #'z'+1
bcs @l1
and #$DF ; convert to uppercase
;; Scan table for match
@l1: ldx #$00
@l2: ldy @code_table,x
beq DoNothing
cmp @code_table,x
beq @l3
inx
bra @l2
@l3: txa
asl a
tax
jmp (@jt,x)
@code_table:
.byte '@' ; Escape @ - clear, home & exit mode
.byte 'A' ; Escape A - right & exit mode
.byte 'B' ; Escape B - left & exit mode
.byte 'C' ; Escape C - down & exit mode
.byte 'D' ; Escape D - up & exit mode
.byte 'E' ; Escape E - clear EOL & exit mode
.byte 'F' ; Escape F - clear EOS & exit mode
.byte 'I' ; Escape I - up
.byte 'J' ; Escape J - left
.byte 'K' ; Escape K - right
.byte 'M' ; Escape M - down
.byte $0b ; Escape up - up
.byte $0a ; Escape down - down
.byte $08 ; Escape left - left
.byte $15 ; Escape right - right
.byte '4' ; Escape 4 - 40 col mode
.byte '8' ; Escape 8 - 80 col mode
.byte $11 ; Escape Ctrl+Q - deactivate
.byte $00 ; sentinel
@jt:
.addr DoHomeAndClear ; Escape @ - clear, home & exit mode
.addr DoForwardSpace ; Escape A - right & exit mode
.addr DoBackspace ; Escape B - left & exit mode
.addr DoLineFeed ; Escape C - down & exit mode
.addr DoUp ; Escape D - up & exit mode
.addr DoClearEOL ; Escape E - clear EOL & exit mode
.addr DoClearEOS ; Escape F - clear EOS & exit mode
.addr DoUpRemain ; Escape I - up
.addr DoLeftRemain ; Escape J - left
.addr DoRightRemain ; Escape K - right
.addr DoDownRemain ; Escape M - down
.addr DoUpRemain ; Escape up - up
.addr DoDownRemain ; Escape down - down
.addr DoLeftRemain ; Escape left - left
.addr DoRightRemain ; Escape right - right
.addr Do40Col ; Escape 4 - 40 col mode
.addr Do80Col ; Escape 8 - 80 col mode
.addr DoQuit ; Escape Ctrl+Q - deactivate
;;; ============================================================
CheckPauseListing:
lda KBD
cmp #$93 ; Ctrl-S
bne @l3
bit KBDSTRB
@l1: lda KBD
bpl @l1
cmp #$83 ; Ctrl-C
beq @l3
.byte $2C
@l2: bpl $C900
@l3: rts
;;; ============================================================
LC941: ldy #$00
ldx #$00
@l1: cpy WNDWDTH
bcs @l2
jsr LC9A8
sta $0200,x
inx
iny
bra @l1
@l2: dey
sty CH
stx SAVEX
lda #$8D ; return
LC95B: rts
;;; ============================================================
Do40Col:
bit RD80VID
php
jsr Disable80Col
jsr LCAFA
jsr LCE33
plp
bpl LC95B
jmp LCC68
;;; ============================================================
LC96F: jsr LC822
cmp #$00
beq @l4
cmp #$02
beq LC941
cmp #$05
bne LC95B
ldy CH
@l1: iny
cpy WNDWDTH
beq @l2
jsr LC9A8
dey
jsr LCEC8
iny
bra @l1
@l2: dey
@l3: lda #$A0
jsr LCEC8
bra LC96F
@l4: ldy WNDWDTH
@l5: dey
cpy CH
beq @l3
dey
jsr LC9A8
iny
jsr LCEC8
bra @l5
;;; ============================================================
LC9A8: jsr LCEBD
ora #$80
cmp #$A0
bcs @l1
ora #$40
@l1: rts
;;; ============================================================
LC9B4: bit RD80VID
bpl LC9CC
lsr WNDWDTH
asl WNDWDTH
sta SET80COL
;; This is CH fix described in source fragment below!
LC9C0: lda CH ; HAVE THEY CHANGED COL?
cmp XCOORD
bne LC9CA ; YES - USE THEIRS
lda OURCH ; ELSE USE OURS (THEY MIGHT HAVE
; CHANGED THIS TOO)
LC9CA: sta CH
LC9CC: rts
;;; ============================================================
DoUpRemain:
jsr DoUp
bra Remain
DoDownRemain:
jsr DoLineFeed
bra Remain
DoRightRemain:
jsr DoForwardSpace
bra Remain
DoLeftRemain:
jsr DoBackspace
;; fall through
Remain: lda #$80
bra SetModeBits
;;; ============================================================
DoInverse:
ldy #$3F
.byte OPC_BIT_abs ; skip next instruction
DoNormal:
ldy #$FF
sty INVFLG
LC9EA: rts
;;; ============================================================
Do80Col:
bit RD80VID
php
jsr Enable80Col
jsr LCAFA
jsr LCE33
plp
bmi LC9EA
jmp LCC18
;;; ============================================================
DoQuit:
jsr Do40Col
jsr DoSETVID
jsr DoSETKBD
lda #23
ldx #0
jsr LCAA1
lda #M_INACTIVE
sta MODE
lda #$98
rts
;;; ============================================================
;;; Adusting MODE Bits
DoCtrlCaret:
lda #$FC ; clear mode bits %xxxxxx00
jsr PreserveModeBits
lda #$32 ; set mode bits %xx11xx1x
bra SetModeBits
DoDisableMouseText:
.if !INCLUDE_PATCHES
lda #M_MOUSE ; BUG! Should be ~M_MOUSE
.else
lda #.lobyte(~M_MOUSE)
.endif
PreserveModeBits:
and MODE
bra StoreMode
DoEnableMouseText:
lda #M_MOUSE
SetModeBits:
ora MODE
StoreMode:
sta MODE
rts
;;; ============================================================
LCA2F: lda CHAR
sec
sbc #$20
and #$7F
pha
dec MODE
lda MODE
and #$03
bne @l2
pla
cmp #$18
bcs @l1
jsr LCAA3
@l1: lda $05F8
cmp WNDWDTH
bcs :+
sta CH
: rts
@l2: pla
sta $05F8
rts
;;; ============================================================
DoBackspace:
lda CH
beq LCA60
dec CH
LCA5F: rts
;;; ============================================================
LCA60: lda CV
beq LCA5F
lda WNDWDTH
dec a
sta CH
DoUp: lda CV
beq LCA5F
dec CV
bra LCAA5
;;; ============================================================
DoForwardSpace:
inc CH
lda CH
cmp WNDWDTH
bcc LCA5F
;; fall through
;;; ============================================================
DoReturn:
stz CH
;; fall through
;;; ============================================================
DoLineFeed:
lda CV
cmp #$FF
beq @l1
cmp #$17
bcs DoScrollUp
@l1: inc CV
bra LCAA5
;;; ============================================================
DoHome:
lda WNDTOP
ldx #$00
bra LCAA1
;;; ============================================================
DoClearLine:
lda CH
pha
stz CH
jsr DoClearEOL
pla
sta CH
rts
;;; ============================================================
LCA9B: lda $06F8
ldx $0778
LCAA1: stx CH
LCAA3: sta CV
LCAA5: jmp DoMON_VTAB
;;; ============================================================
DoScrollUp:
lda CH
pha
jsr DoHome
@l1: ldy BASH
sty BAS2H
ldy BASL
sty BAS2L
lda WNDBTM
beq @l5
dec a
cmp CV
beq @l5
bcc @l5
inc CV
jsr LCAA5
ldy WNDWDTH
dey
bit RD80VID
bmi @l3
@l2: lda (BASL),y
sta (BAS2L),y
dey
bpl @l2
bra @l1
@l3: tya
lsr a
tay
@l4: bit TXTPAGE1
lda (BASL),y
sta (BAS2L),y
bit TXTPAGE2
lda (BASL),y
sta (BAS2L),y
dey
bpl @l4
bit TXTPAGE1
bra @l1
@l5: stz CH
jsr DoClearEOL
plx
lda CV
bra LCAA1
LCAFA: lda CV
sta $06F8
lda CH
sta $0778
rts
;;; ============================================================
DoScroll:
jsr LCAFA
lda WNDBTM
dec a
dec a
sta $05F8
LCB0F: lda $05F8
jsr LCAA3
lda BASL
sta BAS2L
lda BASH
sta BAS2H
lda $05F8
inc a
jsr LCAA3
ldy WNDWDTH
dey
LCB27: phy
bit TXTPAGE1
bit RD80VID
bpl LCB38
tya
lsr a
tay
bcs LCB38
bit TXTPAGE2
LCB38: lda (BAS2L),y
sta (BASL),y
ply
dey
bpl LCB27
bit TXTPAGE1
lda $05F8
cmp WNDTOP
beq LCB4F
dec $05F8
bra LCB0F
LCB4F: lda #$00
jsr LCAA3
jsr DoClearLine
bit TXTPAGE1
jmp LCA9B
;;; ============================================================
PascalInit:
jsr LC814
LCB60: jsr LCBE1
LCB63: ldx CH
stx OURCH
stx XCOORD
ldx #$00
rts
;;; ============================================================
PascalRead:
jsr InitTextWindow
jsr LC822
lda CHAR
bra LCB63
;;; ============================================================
PascalWrite:
sta CHAR
jsr InitTextWindow
jsr LCBF8
lda CHAR
ora #$80
sta CHAR
and #$7F
cmp #$15
beq LCB63
cmp #$0D
beq @l1
jsr LC84C
bra LCB60
@l1: stz CH
bra LCB60
;;; ============================================================
PascalStatus:
cmp #$00
beq @l1
cmp #$01
bne @l2
jsr LCCB8
bra LCB63
@l1: sec
bra LCB63
@l2: ldx #$03
clc
rts
;;; ============================================================
InitTextWindow:
pha
lda OLDBASL
sta BASL
lda OLDBASH
sta BASH
stz WNDTOP
stz WNDLFT
lda #80
sta WNDWDTH
lda #24
sta WNDBTM
jsr LC9C0
pla
rts
;;; ============================================================
;; ???
sta CLRALTCHAR
Disable80Col:
sta CLR80COL
sta CLR80VID
rts
Enable80Col:
sta SET80COL
sta SET80VID
sta SETALTCHAR
rts
;;; ============================================================
LCBE1: lda MODE
cmp #M_INACTIVE
beq LCC04
and #M_ESC
beq LCC04
jsr LCEBB
sta OLDCH
and #$80
eor #$AB
bra LCC13
;;; ============================================================
LCBF8: lda MODE
and #M_ESC
beq LCC04
lda OLDCH
bra LCC13
LCC04: jsr LCEBB
eor #$80
;; If within "@ABC...XYZ[\]^_" range, map to $00-$1F
;; so it shows as inverse uppercase, not MouseText.
cmp #'@'
bcc :+
cmp #'_'+1
bcs :+
and #$1F
:
LCC13: ldy CH
jmp LCEC8
LCC18: php
sei
lda WNDTOP
sta $05F8
LCC1F: lda $05F8
jsr LCAA3
lda BASL
sta BAS2L
lda BASH
sta BAS2H
ldy #$00
LCC2F: bit TXTPAGE1
lda (BAS2L)
bit TXTPAGE2
sta (BASL),y
bit TXTPAGE1
inc BAS2L
lda (BAS2L)
sta (BASL),y
iny
inc BAS2L
cpy #$14
bcc LCC2F
lda #$A0
LCC4B: bit TXTPAGE2
sta (BASL),y
bit TXTPAGE1
sta (BASL),y
iny
cpy #$28
bcc LCC4B
inc $05F8
lda $05F8
cmp #$18
bcc LCC1F
LCC64: plp
jmp LCA9B
LCC68: php
sei
sta SET80COL
lda WNDTOP
sta $05F8
LCC72: lda $05F8
jsr LCAA3
ldy #$13
bit TXTPAGE1
LCC7D: lda (BASL),y
pha
dey
bpl LCC7D
ldy #$00
lda BASL
sta BAS2L
lda BASH
sta BAS2H
LCC8D: bit TXTPAGE2
lda (BASL),y
bit TXTPAGE1
sta (BAS2L)
inc BAS2L
pla
sta (BAS2L)
inc BAS2L
iny
cpy #$14
bcc LCC8D
inc $05F8
lda $05F8
cmp #$18
bcc LCC72
sta CLR80COL
bra LCC64
LCCB2: jsr LCCB8
jmp pageC5::DoBankC5 ; bad disasm or ...?
LCCB8: bit $0579
bmi LCCD7
LCCBD: bit $05FA
bvs LCCCE
bpl LCCCE
lda $05FF
cmp $06FF
beq LCCD3
bra LCCD5
LCCCE: bit KBD
bmi LCCD5
LCCD3: clc
rts
LCCD5: sec
rts
LCCD7: jsr LCDA8
beq LCCE1
LCCDC: stz $0579
bra LCCBD
LCCE1: phx
ldx $0479
jsr LCE16
lda $0200,x
jsr LCE25
plx
cmp #$00
beq LCCDC
bra LCCD5
LCCF5: jsr LCCFB
jmp pageC5::DoBankC5
LCCFB: bit $0579
bpl LCD03
jmp LCD85
LCD03: bit $05FA
bvs LCD2F
bpl LCD2F
phx
ldx $06FF
bit RDRAMRD
php
sta RDCARDRAM
lda $0800,x
plp
bmi LCD1E
sta RDMAINRAM
LCD1E: inx
bne LCD23
ldx #$80
LCD23: stx $06FF
plx
pha
pla
php
ora #$80
plp
bra LCD38
LCD2F: lda KBD
bit KBDSTRB
bit $C0B4
LCD38: bpl LCD41
LCD3A: cmp #$06
bcc LCD40
ora #$80
LCD40: rts
LCD41: and #$7F
cmp #$01
bne LCD4B
lda #$1A
bra LCD3A
LCD4B: cmp #$03
bne LCD53
lda #$0C
bra LCD3A
LCD53: cmp #$04
bne LCD5B
lda #$19
bra LCD3A
LCD5B: cmp #$06
bne LCD63
lda #$2C
bra LCD73
LCD63: cmp #$1F
bne LCD6B
lda #$2D
bra LCD73
LCD6B: cmp #$20
bcc LCD3A
cmp #$2C
bcs LCD3A
LCD73: pha
jsr LCDA8
beq LCD7C
pla
bra LCD3A
LCD7C: lda #$FF
sta $0579
pla
jsr LCDBE
LCD85: jsr LCDA8
beq LCD91
LCD8A: stz $0579
lda #$A0
bra LCD3A
LCD91: phx
ldx $0479
jsr LCE16
lda $0200,x
jsr LCE25
plx
inc $0479
cmp #$00
beq LCD8A
bra LCD3A
LCDA8: jsr LCE16
lda #$00
phx
tax
clc
LCDB0: adc $0200,x
inx
bne LCDB0
plx
jsr LCE25
cmp $04F9
rts
LCDBE: phx
phy
jsr LCE16
sec
sbc #$20
ldy #$00
tax
beq LCDD7
LCDCB: lda $0200,y
beq LCDD3
iny
bra LCDCB
LCDD3: iny
LCDD4: dex
bne LCDCB
LCDD7: jsr LCE25
sty $0479
ply
plx
rts
eor ($55)
lsr a:$0D
jmp $5349
.byte $54
ora $FF00
LCDEC: sta WRCARDRAM
lda #$00
tax
LCDF2: sta $0200,x
inx
cpx #$0C
bcc LCDF2
LCDFA: lda LCDD4,x
cmp #$FF
.byte $F0
LCE00: asl $9D
brk
.byte $02
inx
bra LCDFA
sta WRMAINRAM
stz $0579
LCE0D: jsr LCDA8
sta $04F9
jmp pageC5::DoBankC5
LCE16: pha
lda RDRAMRD
sta RDMAINRAM
sta OURCV
sta RDCARDRAM
pla
rts
LCE25: pha
sta RDMAINRAM
lda OURCV
bpl LCE31
sta RDCARDRAM
LCE31: pla
rts
LCE33: lda #$00
bit RDTEXT
bmi DoSETWND
lda #$14
;;; ============================================================
;;; Load X,Y with address of a routine -1 (for `ROMCall`)
.macro LDXY addr
ldx #.hibyte(addr-1)
ldy #.lobyte(addr-1)
.endmacro
;;; ============================================================
DoSETWND:
LDXY SETWND
bra ROMCall
;;; ============================================================
DoBell:
LDXY BELLB
bra ROMCall
;;; ============================================================
DoSETKBD:
LDXY SETKBD
bra ROMCall
;;; ============================================================
DoSETVID:
LDXY SETVID
bra ROMCall
;;; ============================================================
DoMON_VTAB:
LDXY MON_VTAB
bra ROMCall
;;; ============================================================
DoClearEOS:
LDXY CLREOP
bra ROMCall
;;; ============================================================
DoHomeAndClear:
LDXY HOME
bra ROMCall
;;; ============================================================
DoClearEOL:
LDXY CLREOL
;; fall through
;;; ============================================================
;;; A = character, X,Y = ROM address-1 (return value to push to stack)
ROMCall:
sta TEMP2
bit RDLCRAM
php
bit RDLCBNK2
php
lda #.hibyte(ROMCallReturn-1)
pha
lda #.lobyte(ROMCallReturn-1)
pha
phx
phy
bit ROMIN2
lda TEMP2
rts
ROMCallReturn:
plp
bpl @l2
plp
bpl @l1
bit LCBANK2
bit LCBANK2
bra @l4
@l1: bit ROMIN
bit ROMIN
bra @l4
@l2: plp
bpl @l3
bit LCBANK1
bit LCBANK1
bra @l4
@l3: bit $C089 ; ???
bit $C089 ; ???
@l4: lda BASL
sta OLDBASL
lda BASH
sta OLDBASH
lda CH
sta OURCH
rts
;;; ============================================================
LCEBB: ldy CH
LCEBD: phy
jsr LCED2
lda (BASL),y
LCEC3: ply
bit TXTPAGE1
rts
;;; ============================================================
LCEC8:
phy
pha
jsr LCED2
pla
sta (BASL),y
bra LCEC3
;;; ============================================================
LCED2:
bit RD80VID
bpl @l1
tya
lsr a
tay
bcc @l2
@l1: bit TXTPAGE1
rts
@l2: bit TXTPAGE2
rts
;;; ============================================================
.if !INCLUDE_PATCHES
.byte "EN\r"
.byte "\tASL\tWIDTH\r"
.byte "\tSTA\tON80ST\tMAKE SURE 80 STORE IS ENABLED\r"
.byte "\r"
.byte ";CHANGED THIS 9/15/86 FOR HABA MERGE AND MOUSE WRITE:\r"
.byte "\r"
.byte "FIXCOL\tLDA\tCOL\tHAVE THEY CHANGED COL ?\r"
.byte "\tCMP\tOLDCOL\r"
.byte "\tBNE\t.2\tYES - USE THEIRS\r"
.byte "\tLDA\tAPPLECOL\tELSE USE OURS (THEY MIGHT HAVE\r"
.byte ";\t\t\t CHANGED THIS TOO)\r"
.byte ".2\tSTA\tCOL\r"
.byte "\r"
.byte ".END\tRTS\r"
.byte "\r"
.byte "\x1F"
.byte "\r;E"
.else
Patch4:
lda CHAR ; char to be printed
bit INVFLG
bmi :+ ; normal
and #$7F ; clear high bit
: and #$FF ; set N flag
rts
.endif
;;; ============================================================
.res $D000 - *, 0
;;; ============================================================
.assert * = $D000, error, "Length changed"
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