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ddcaa21464
franklin/ace2000_c300_cfff.s
Joshua Bell ddcaa21464 misc disasm
2021-11-09 20:55:40 -08:00

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; da65 V2.19 - Git 59c58acbe
; Created: 2021-11-02 17:43:56
; Input file: Franklin_Ace2000_ROM_U2_P2_Rev6.bin
; Page: 1
.setcpu "65C02"
.include "opcodes.inc"
.feature string_escapes
;;; Set to 1 to include preliminary fixes for:
;;; * MouseText mode failing to exist on $18 output.
;;; * CH not working to set horizontal cursor position.
INCLUDE_PATCHES = 0
;;; 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
;;; Screen Holes
SAVEA := $4F8
SAVEX := $578
SAVEY := $478
SAVECV := $6F8
SAVECH := $778
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
RD80COL := $C018
RDTEXT := $C01A
ALTCHARSET := $C01E
RD80VID := $C01F
TXTPAGE1:= $C054
TXTPAGE2:= $C055
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
CLREOP := $FC42
HOME := $FC58
CLREOL := $FC9C
;;; ============================================================
.org $C300
;; Init
LC300: bit SETV ; V = init
bra MainEntry
;; Input
.assert * = C3KeyIn, error, "Entry point mismatch"
LC305: sec
.byte OPC_BCC ; never taken; skip next byte
;; Output
.assert * = C3COut1, error, "Entry point mismatch"
LC307: clc
clv
bra MainEntry
;; Signature bytes
.byte $01, $88
;; 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"
php
bit CLRROM
plp
jmp DoXfer
;;; ============================================================
;;; Pascal Entry Points
JPINIT: bit CLRROM
jmp PascalInit
JPREAD: bit CLRROM
jmp PascalRead
JPWRITE:bit CLRROM
jmp PascalWrite
JPSTAT: bit CLRROM
jmp PascalStatus
JumpAuxMove:
bit CLRROM
jmp DoAuxMove
;;; ============================================================
;;; Main Entry Points
MainEntry:
sta CLRROM
sta SAVEA
stx SAVEX
sty SAVEY
pha
bvc l1
lda #<LC305
sta KSWL
ldx #>LC305
stx KSWH
lda #<LC307
sta CSWL
stx CSWH
jsr LC800
clc
l1: php
bit RD80VID
bpl l2
lsr WNDWDTH
asl WNDWDTH
sta SET80COL
;; NOTE: In ACE 500 ROM, the below is patched to
;; address the CH/OURCH issue.
.if !INCLUDE_PATCHES
lda OURCH
.else
jsr Patch1
.endif
sta CH
l2: plp
pla
bcs l3
jsr LC8B1
bra l9
l3: ldx SAVEX
beq l4
dex
lda $0678
cmp #$88 ; left?
beq l4
cmp $0200,x
bne l7
sta $0200,x
l4: jsr LC877
cmp #$9B ; escape?
beq EscapeMode
cmp #$8D ; return?
bne l5
pha
jsr DoClearEOL
pla
l5: cmp #$95 ; right?
bne l6
jsr LCEBE
ora #$80
cmp #$A0 ; non-control char
bcs l6
ora #$40
l6: sta $0678
bra l8
l7: jsr LC850
stz $0678
l8: bra l10
l9: lda SAVEA
l10: ldx SAVEX
ldy CH
.if !INCLUDE_PATCHES
sty OURCH
.else
jsr Patch2
.endif
ldy SAVEY
SETV: rts ; has V flag set
;;; ============================================================
;;; Escape Mode
EscapeMode:
lda #M_ESC
tsb MODE
jsr LC850
jsr ProcessEscapeModeKey
cmp #$98 ; ctrl-x (clear)
beq l6
lda MODE ; still in escape mode?
bmi EscapeMode
bra l4
;;; ============================================================
.assert * = $C3DC, error, "Potential entry point moved"
;; ???
bit CLRROM
jmp UnknownEP1
;;; ============================================================
brk
brk
brk
brk
brk
brk
;;; ============================================================
.assert * = $C3E8, error, "Potential entry point moved"
;; ???
bit CLRROM
jmp UnknownEP2
bit CLRROM
jmp UnknownEP3
bit CLRROM
jmp UnknownEP4
bit CLRROM
jmp UnknownEP5
;;; ==================================================
.assert * = $C400, error, "Mismatch"
.scope
LF813 := $F813 ; Not an Apple II entry point
LF981 := $F981 ; Not an Apple II entry point
LFA37 := $FA37 ; Not an Apple II entry point
LFA52 := $FA52 ; Not an Apple II entry point
LFC45 := $FC45 ; Not an Apple II entry point
LFEEB := $FEEB ; Not an Apple II entry point
ldx #$00
eor #$20
beq LC419
and #$9F
beq LC41B
asl a
eor #$12
beq LC41A
and #$1A
eor #$02
beq LC41B
and #$10
bne LC41A
LC419: inx
LC41A: inx
LC41B: stx $2F
jmp LF813
lda KBD
eor #$93
bne LC439
lda KBDSTRB
LC42A: jsr LFA37
lda KBD
bpl LC42A
eor #$83
beq LC439
sta KBDSTRB
LC439: jmp LF813
lda $2E
eor #$FF
and ($26),y
sta ($26),y
lda $2E
and $30
ora ($26),y
sta ($26),y
jmp LF813
LC44F: ldx #$3C
jsr LFC45
beq LC463
jsr LC469
jsr LFA52
ldx #$42
jsr LFA52
bra LC44F
LC463: jsr LC469
jmp LF813
LC469: lda ($00,x)
sta ($06,x)
rts
and #$0F
asl a
tax
lda LC47E,x
pha
lda LC47E+1,x
tax
pla
jmp LF813
;; Jump Table (target address-1)
LC47E: .byte $F0
sbc $C100,x
brk
.byte $C2
brk
.byte $C3
brk
cpy $00
cmp $00
dec $00
smb4 $1B
sbc a:$A9,x
stz A2L
stz A2H
stz $2C
LC498: ora A2L
sta A2L
lda $0200,y
iny
jsr LFEEB
bmi LC4B2
dec $2C
ldx #$04
LC4A9: asl A2L
LC4AB: rol A2H
dex
bne LC4A9
bra LC498
LC4B2: jmp LF813
lsr a
phx
php
ldx #$26
jsr LF981
plp
php
lda #$00
adc #$00
tax
lda LC4CE,x
sta $2E
plp
plx
LC4CB: jmp LF813
;; Data table
LC4CE: bbr0 $F0,LC4AB
and #$0F
tax
lda $C4DD,x
sta $30
plx
jmp LF813
brk
ora ($22),y
.byte $33
.byte $44
eor $66,x
rmb7 $88
sta $BBAA,y
cpy $EEDD
.byte $FF
tya
ldy $C4FD,x
beq * + (8)
cmp $C000,y
inx
bra $C4EE
tay
jmp LF813
eor ($54)
lsr $00,x
lsr $50,x
.byte $53
brk
.byte $9B
trb $88FA
ora #$FA
tya
adc ($FD,x)
sta $21,x
plx
sta $FA16
brk
sta $FC3A
txa
adc $FC
smb0 $E1
.byte $FB
dey
.byte $42
plx
brk
eor #$F5
.byte $FC
lsr a
.byte $5B
plx
.byte $4B
sbc $FB,x
eor $FCBC
brk
sta $FEBE
ldy #$C9
inc $AAAE,x
sbc $47BA,x
sbc $12BC,x
inc $80C7,x
sed
dec $FE8C
.byte $82
bbs7 $DF,LC4CB
.byte $02
cpx #$99
smb7 $03
bcc $C574
sbc a:$00,x
.endscope
;;; ============================================================
.res $C800 - *, 0
;;; ============================================================
LC800: lda #M_NORMAL
sta MODE
jsr LCBBD
jsr DoSETWND
jmp DoHomeAndClear
LC80E: ldy #$00
ldx #$00
LC812: cpy WNDWDTH
bcs LC820
jsr LCEC0
sta $0200,x
inx
iny
bra LC812
LC820: dey
sty CH
stx SAVEX
lda #$8D
rts1: rts
Do40Col:
bit RD80VID
php
jsr LCBB6
jsr SaveCHCV
jsr DoSETWND
plp
bpl rts1
jmp LCC4E
;;; ============================================================
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
;;; ============================================================
;; ???
jsr LCB95
LC850: jsr LCBC7
LC853: inc RNDL
bne :+
inc RNDH
:
jsr UnknownEP4
bcc LC853
jsr UnknownEP5
cmp #$06
bcc LC86E
and #$7F
sta CHAR
ora #$80
bra LC871
LC86E: sta CHAR
LC871: pha
jsr LCBDE
pla
rts2: rts
;;; ============================================================
LC877: jsr LC850
cmp #$00
beq @l4
cmp #$02
beq LC80E
cmp #$05
bne rts2
ldy CH
@l1: iny
cpy WNDWDTH
beq @l2
jsr LCEC0
dey
jsr LCECB
iny
bra @l1
@l2: dey
@l3: lda #$A0
jsr LCECB
bra LC877
@l4: ldy WNDWDTH
dey
@l5: cpy CH
beq @l3
dey
jsr LCEC0
iny
jsr LCECB
dey
bra @l5
;;; ============================================================
LC8B1: sta CHAR
LC8B4: jsr CheckPauseListing
lda MODE
and #$03 ; test low 2 bits
beq @l1
jmp LCA11
@l1: lda CHAR
and #$7F
cmp #$20
bcc DoCtrlCharOut
ldy CH
cpy WNDWDTH
bcc @l2
jsr DoReturn
@l2: lda CHAR ; char to be printed
bit INVFLG
bmi @l3
and #$7F
bit MODE
bvs @l3 ; test bit 6 (MouseText active)
bit ALTCHARSET
bpl @l3
cmp #$40
bcc @l3
cmp #$60
bcs @l3
and #$1F
@l3: jsr LCBF9
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 rts3
bit KBDSTRB
: lda KBD
bpl :-
cmp #$83 ; Ctrl-C
beq rts3
bit KBDSTRB
rts3: rts
;;; ============================================================
;; Unused???
nop
jmp LCB60
;;; ============================================================
DoUpRemain:
jsr DoUp
bra Remain
DoDownRemain:
jsr DoLineFeed
bra Remain
DoRightRemain:
jsr DoForwardSpace
bra Remain
DoLeftRemain:
jsr DoBackspace
;; fall through
Remain: lda #M_ESC ; stay in Escape Mode
jmp SetModeBits
;;; ============================================================
DoInverse:
ldy #$3F
bra LC9CA
DoNormal:
ldy #$FF
LC9CA: sty INVFLG
rts4: rts
;;; ============================================================
Do80Col:
bit RD80VID
php
jsr LCBBD
jsr SaveCHCV
jsr DoSETWND
plp
bmi rts4
jmp LCBFE
;;; ============================================================
DoQuit:
jsr Do40Col
jsr DoSETVID
jsr DoSETKBD
lda #23
ldx #0
jsr SetCHCV
lda #M_INACTIVE
sta MODE ; set all mode bits (???)
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
;;; ============================================================
LCA11: lda CHAR ; character to read/print
sec
sbc #$20
and #$7F
pha
dec MODE ; clear low bit???
lda MODE
and #$03 ; test low 2 bits
bne @l2
pla
cmp #$18 ; +$20 is $38 = '8' ???
bcs @l1
jsr SetCV
@l1: lda $05F8
cmp WNDWDTH
bcs :+
sta CH
: rts
@l2: pla
sta $05F8
rts
;;; ============================================================
DoForwardSpace:
inc CH
lda CH
cmp WNDWDTH
bcs DoReturn
rts
;;; ============================================================
DoBackspace:
lda CH
beq :+
dec CH
rts5: rts
: lda CV
beq rts5
lda WNDWDTH
dec a
sta CH
;;; ============================================================
DoUp:
lda CV
beq rts5
dec CV
bra JumpMON_VTAB
;;; ============================================================
DoReturn:
stz CH
;; fall through
;;; ============================================================
DoLineFeed:
lda CV
cmp #23
bcs DoScrollUp
inc CV
bra JumpMON_VTAB
;;; ============================================================
DoHome:
lda WNDTOP
ldx #$00
bra SetCHCV
;;; ============================================================
DoClearLine:
lda CH
pha
stz CH
jsr DoClearEOL
pla
sta CH
rts
;;; ============================================================
RestoreCHCV:
lda SAVECV
ldx SAVECH
SetCHCV:
stx CH
SetCV:
sta CV
JumpMON_VTAB:
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 JumpMON_VTAB
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
jmp SetCHCV
;;; ============================================================
SaveCHCV:
lda CV
sta SAVECV
lda CH
sta SAVECH
rts
;;; ============================================================
;;; Load X,Y with address of a routine -1 (for `ROMCall`)
.macro LDXY addr
ldx #.hibyte(addr-1)
ldy #.lobyte(addr-1)
.endmacro
;;; ============================================================
DoBell:
LDXY BELLB
jmp ROMCall
;;; ============================================================
DoScroll:
jsr SaveCHCV
lda WNDBTM
dec a
dec a
sta $05F8
@l1: lda $05F8
jsr SetCV
lda BASL
sta BAS2L
lda BASH
sta BAS2H
lda $05F8
inc a
jsr SetCV
ldy WNDWDTH
dey
@l2: phy
bit TXTPAGE1
bit RD80VID
bpl @l3
tya
lsr a
tay
bcs @l3
bit TXTPAGE2
@l3: lda (BAS2L),y
sta (BASL),y
ply
dey
bpl @l2
bit TXTPAGE1
lda $05F8
cmp WNDTOP
beq @l4
dec $05F8
bra @l1
@l4: lda #$00
jsr SetCV
jsr DoClearLine
bit TXTPAGE1
jmp RestoreCHCV
;;; ============================================================
PascalInit:
jsr LC800
LCB47: jsr LCBC7
LCB4A: ldx CH
.if !INCLUDE_PATCHES
stx OURCH
.else
jsr Patch3
.endif
ldx #$00
rts
;;; ============================================================
PascalRead:
jsr LCB95
jsr LC850
lda CHAR
bra LCB4A
;;; ============================================================
PascalWrite:
sta CHAR
LCB60: jsr LCB95
jsr LCBDE
lda CHAR
ora #$80
sta CHAR
and #$7F
cmp #$15 ; right?
beq LCB4A
cmp #$0D ; return?
beq LCB7D
jsr LC8B4
bra LCB47
LCB7D: stz CH
bra LCB47
;;; ============================================================
PascalStatus:
cmp #$00
beq @l1
cmp #$01
bne @l2
jsr UnknownEP4
bra LCB4A
@l1: sec
bra LCB4A
@l2: ldx #$03
clc
rts
;;; ============================================================
LCB95: pha
lda OLDBASL
sta BASL
lda OLDBASH
sta BASH
stz WNDTOP
stz WNDLFT
lda #80
sta WNDWDTH
lda #24
sta WNDBTM
lda OURCH
sta CH
pla
rts
;; ???
sta CLRALTCHAR
LCBB6: sta CLR80COL
sta CLR80VID
rts
LCBBD: sta SET80COL
sta SET80VID
sta SETALTCHAR
rts
LCBC7: lda MODE ; all mode bits set?
cmp #M_INACTIVE
beq LCBEA
and #M_ESC ; escape mode?
beq LCBEA
jsr LCEBE
sta OLDCH
and #$80
eor #$AB
bra LCBF9
LCBDE: lda MODE ; test high bit
and #M_ESC ; escape mode?
beq LCBEA
lda OLDCH
bra LCBF9
LCBEA: jsr LCEBE
eor #$80
cmp #$40
bcc LCBF9
cmp #$60
bcs LCBF9
and #$1F
LCBF9: ldy CH
jmp LCECB
LCBFE: php
sei
lda WNDTOP
sta $05F8
LCC05: lda $05F8
jsr SetCV
lda BASL
sta BAS2L
lda BASH
sta BAS2H
ldy #$00
LCC15: bit TXTPAGE1
lda (BAS2L)
bit TXTPAGE2
sta (BASL),y
bit TXTPAGE1
inc BAS2L
lda (BAS2L)
sta (BASL),y
iny
inc BAS2L
cpy #$14
bcc LCC15
lda #$A0
LCC31: bit TXTPAGE2
sta (BASL),y
bit TXTPAGE1
sta (BASL),y
iny
cpy #$28
bcc LCC31
inc $05F8
lda $05F8 ; vertical position
cmp #24
bcc LCC05
LCC4A: plp
jmp RestoreCHCV
LCC4E: php
sei
sta SET80COL
lda WNDTOP
sta $05F8
LCC58: lda $05F8
jsr SetCV
ldy #$13
bit TXTPAGE1
LCC63: lda (BASL),y
pha
dey
bpl LCC63
ldy #$00
lda BASL
sta BAS2L
lda BASH
sta BAS2H
LCC73: bit TXTPAGE2
lda (BASL),y
bit TXTPAGE1
sta (BAS2L)
inc BAS2L
pla
sta (BAS2L)
inc BAS2L
iny
cpy #$14
bcc LCC73
inc $05F8 ; vertical position
lda $05F8
cmp #24
bcc LCC58
sta CLR80COL
bra LCC4A
;;; ============================================================
;;; XFER
DoXfer:
pha
lda XFERVEC
pha
lda XFERVEC+1
pha
sta RDMAINRAM
sta WRMAINRAM
bcc :+
sta RDCARDRAM
sta WRCARDRAM
: pla
sta XFERVEC+1
pla
sta XFERVEC
pla
sta ALTZPOFF
bvc :+
sta ALTZPON
: jmp (XFERVEC)
;;; ============================================================
DoAuxMove:
pha
bit RDRAMRD
php
bit RDRAMWRT
php
sta WRMAINRAM
sta RDCARDRAM
bcc LCCDA
sta RDMAINRAM
sta WRCARDRAM
LCCDA: lda (A1L)
sta (A4L)
inc A4L
bne LCCE4
inc A4H
LCCE4: lda A1L
cmp A2L
lda A1H
sbc A2H
inc A1L
bne LCCF2
inc A1H
LCCF2: bcc LCCDA
sta WRCARDRAM
plp
bmi LCCFD
sta WRMAINRAM
LCCFD: sta RDCARDRAM
plp
bmi LCD06
sta RDMAINRAM
LCD06: pla
sec
rts
;;; ============================================================
UnknownEP4:
bit $0579
bmi LCD17
LCD0E: bit KBD
bmi LCD15
clc
rts
LCD15: sec
rts
LCD17: jsr LCDB3
beq LCD21
LCD1C: stz $0579
bra LCD0E
LCD21: phx
ldx $0479
jsr LCE1F
lda $0200,x
jsr LCE2E
plx
cmp #$00
beq LCD1C
bra LCD15
UnknownEP5:
bit $0579
bmi LCD90
lda KBD
bit KBDSTRB
bit $C027 ; ???
bpl LCD4C
LCD45: cmp #$06
bcc LCD4B
ora #$80
LCD4B: rts
LCD4C: and #$7F
cmp #$01
bne LCD56
lda #$1A
bra LCD45
LCD56: cmp #$03
bne LCD5E
lda #$0C
bra LCD45
LCD5E: cmp #$04
bne LCD66
lda #$19
bra LCD45
LCD66: cmp #$06
bne LCD6E
lda #$2C
bra LCD7E
LCD6E: cmp #$1F
bne LCD76
lda #$2D
bra LCD7E
LCD76: cmp #$20 ; space?
bcc LCD45
cmp #$2C ; comma?
bcs LCD45
LCD7E: pha
jsr LCDB3
beq LCD87
pla
bra LCD45
LCD87: lda #$FF
sta $0579
pla
jsr LCDC9
LCD90: jsr LCDB3
beq LCD9C
LCD95: stz $0579
lda #$A0
bra LCD45
LCD9C: phx
ldx $0479
jsr LCE1F
lda $0200,x
jsr LCE2E
plx
inc $0479
cmp #$00
beq LCD95
bra LCD45
LCDB3: jsr LCE1F
lda #$00
phx
tax
clc
LCDBB: adc $0200,x
inx
bne LCDBB
plx
jsr LCE2E
cmp $04F9
rts
;;; ============================================================
LCDC9: phx
phy
jsr LCE1F
sec
sbc #$20
ldy #$00
tax
beq LCDE2
LCDD6: lda $0200,y
beq LCDDE
iny
bra LCDD6
LCDDE: iny
LCDDF: dex
bne LCDD6
LCDE2: jsr LCE2E
sty $0479
ply
plx
rts
;;; ============================================================
;; Function key shortcuts ???
.byte "RUN\r", 0
.byte "LIST\r", 0
.byte $ff
;;; ============================================================
UnknownEP3:
sta WRCARDRAM
lda #$00
tax
@l1: sta $0200,x
inx
cpx #$0C
bcc @l1
@l2: lda LCDDF,x
cmp #$FF
beq @l3
sta $0200,x
inx
bra @l2
@l3: sta WRMAINRAM
stz $0579
UnknownEP2:
jsr LCDB3
sta $04F9
rts
;;; ============================================================
LCE1F: pha
lda RDRAMRD
sta RDMAINRAM
sta $07F8
sta RDCARDRAM
pla
rts
LCE2E: pha
sta RDMAINRAM
lda $07F8
bpl @l1
sta RDCARDRAM
@l1: pla
rts
;;; ============================================================
DoSETWND:
lda #0 ; set cursor to row 0
bit RDTEXT ; unless graphics mode
bmi :+
lda #20 ; then use row 20
: LDXY SETWND
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
;;; ============================================================
LCEBE: ldy CH
LCEC0: phy
jsr LCED5
lda (BASL),y
LCEC6: ply
bit TXTPAGE1
rts
;;; ============================================================
LCECB:
phy
pha
jsr LCED5
pla
sta (BASL),y
bra LCEC6
;;; ============================================================
LCED5:
bit RD80VID
bpl @l1
tya
lsr a
tay
bcc @l2
@l1: bit TXTPAGE1
rts
@l2: bit TXTPAGE2
rts
;;; ============================================================
;;; AUXMOVE implementation (?)
UnknownEP1:
bit RD80COL
php
sta CLR80COL
bit RDRAMRD
php
bit RDRAMWRT
php
phx
plx
beq LCEFD
jmp LCF83
LCEFD: bcc LCF35
sta RDMAINRAM
sta WRCARDRAM
lda A4L
ldx A4H
sta ALTZPON
sta A4L
stx A4H
sta ALTZPOFF
LCF13: lda (A1L)
sta ALTZPON
sta (A4L)
inc A4L
bne LCF20
inc A4H
LCF20: sta ALTZPOFF
lda A1L
cmp A2L
lda A1H
sbc A2H
inc A1L
bne LCF31
inc A1H
LCF31: bcc LCF13
bra LCF67
LCF35: sta RDCARDRAM
sta WRMAINRAM
lda A1L
ldx A1H
sta ALTZPON
sta A1L
stx A1H
LCF46: sta ALTZPON
lda (A1L)
ldx A1L
ldy A1H
inc A1L
bne LCF55
inc A1H
LCF55: sta ALTZPOFF
sta (A4L)
inc A4L
bne LCF60
inc A4H
LCF60: cpx A2L
tya
sbc A2H
bcc LCF46
LCF67: sta ALTZPOFF
sta WRCARDRAM
plp
bmi LCF73
sta WRMAINRAM
LCF73: sta RDCARDRAM
plp
bmi LCF7C
sta RDMAINRAM
LCF7C: plp
bpl LCF82
sta SET80COL
LCF82: rts
LCF83: bcc LCFB7
sta RDMAINRAM
sta WRCARDRAM
lda A4L
ldy A4H
sta ALTZPON
sta A4L
sty A4H
sta ALTZPOFF
ldy #$00
: lda (A1L),y
sta ALTZPON
sta (A4L),y
sta ALTZPOFF
iny
bne :-
inc A1H
sta ALTZPON
inc A4H
sta ALTZPOFF
dex
bne :-
bra LCFE4
LCFB7: sta RDCARDRAM
sta WRMAINRAM
lda A1L
ldy A1H
sta ALTZPON
sta A1L
sty A1H
ldy #$00
: sta ALTZPON
lda (A1L),y
sta ALTZPOFF
sta (A4L),y
iny
bne :-
inc A4H
sta ALTZPON
inc A1H
sta ALTZPOFF
dex
bne :-
LCFE4: jmp LCF67
;;; ============================================================
.if INCLUDE_PATCHES
Patch1:
lda CH
cmp XCOORD
bne :+
lda OURCH
: rts
Patch2:
sty OURCH
sty XCOORD
rts
Patch3:
stx OURCH
stx XCOORD
rts
.endif
;;; ============================================================
.res $D000 - *, 0
;;; ============================================================
.assert * = $D000, error, "Length changed"
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