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init.s
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.segment "INIT"
.if .def(KBD)
FNDLIN2:
php
jmp FNDLIN
.endif
; ----------------------------------------------------------------------------
PR_WRITTEN_BY:
.ifndef KBD
.ifndef CONFIG_CBM_ALL
.ifndef AIM65
.ifndef SYM1
lda #<QT_WRITTEN_BY
ldy #>QT_WRITTEN_BY
jsr STROUT
.endif
.endif
.endif
.endif
COLD_START:
.ifdef SYM1
jsr ACCESS
.endif
.if .def(KBD)
lda #<LFD81
sta $03A0
lda #>LFD81
sta $03A1
lda #$20
sta $0480
lda $0352
sta $04
lda $0353
sta $05
.else
.ifndef CBM2
ldx #$FF
stx CURLIN+1
.endif
.ifdef CONFIG_NO_INPUTBUFFER_ZP
ldx #$FB
.elseif .def(AIM65)
ldx #$FE
.endif
txs
.ifndef CONFIG_CBM_ALL
lda #<COLD_START
ldy #>COLD_START
sta GORESTART+1
sty GORESTART+2
.ifndef AIM65
sta GOSTROUT+1
sty GOSTROUT+2
lda #<AYINT
ldy #>AYINT
sta GOAYINT
sty GOAYINT+1
lda #<GIVAYF
ldy #>GIVAYF
sta GOGIVEAYF
sty GOGIVEAYF+1
.endif
.endif
lda #$4C
.ifdef CONFIG_CBM_ALL
sta JMPADRS
.endif
sta GORESTART
.ifdef AIM65
sta JMPADRS
sta ATN
sta GOSTROUT
.else
.ifndef CONFIG_CBM_ALL
sta GOSTROUT
sta JMPADRS
.endif
.ifdef SYM1
sta USR1
sta USR3
sta USR2
.endif
.if (!.def(CONFIG_RAM)) && (!.def(CONFIG_CBM_ALL))
sta USR
.endif
.endif
.ifndef CONFIG_RAM
.ifdef APPLE
lda #<USR_FUNC
ldy #>USR_FUNC
.else
lda #<IQERR
ldy #>IQERR
.endif
.ifdef AIM65
sta ATN+1
sty ATN+2
sta GOSTROUT+1
sty GOSTROUT+2
.else
sta USR+1
sty USR+2
.ifdef SYM1
sta USR1+1
sty USR1+2
lda #<DUMPT
ldy #>DUMPT
sta USR2+1
sty USR2+2
lda #<L8C78
ldy #>L8C78
sta USR3+1
sty USR3+2
.endif
.endif
.endif
.ifndef CBM1
lda #WIDTH
sta Z17
lda #WIDTH2
sta Z18
.endif
.endif
; All non-CONFIG_SMALL versions of BASIC have
; the same bug here: While the number of bytes
; to be copied is correct for CONFIG_SMALL,
; it is one byte short on non-CONFIG_SMALL:
; It seems the "ldx" value below has been
; hardcoded. So on these configurations,
; the last byte of GENERIC_RNDSEED, which
; is 5 bytes instead of 4, does not get copied -
; which is nothing major, because it is just
; the least significant 8 bits of the mantissa
; of the random number seed.
; KBD added three bytes to CHRGET and removed
; the random number seed, but only adjusted
; the number of bytes by adding 3 - this
; copies four bytes too many, which is no
; problem.
.ifdef CONFIG_SMALL
.if .def(KBD)
ldx #GENERIC_CHRGET_END-GENERIC_CHRGET+4
.else
ldx #GENERIC_CHRGET_END-GENERIC_CHRGET
.endif
.else
ldx #GENERIC_CHRGET_END-GENERIC_CHRGET-1 ; XXX
.endif
L4098:
lda GENERIC_CHRGET-1,x
sta CHRGET-1,x
dex
bne L4098
.ifdef CONFIG_2
lda #$03
sta DSCLEN
.endif
.ifndef KBD
txa
sta SHIFTSIGNEXT
.ifdef CONFIG_CBM_ALL
sta CURDVC
.endif
sta LASTPT+1
.ifndef AIM65
.if .defined(CONFIG_NULL) || .defined(CONFIG_PRINTNULLS)
sta Z15
.endif
.endif
.ifndef CONFIG_11
sta POSX
.endif
pha
sta Z14
.ifndef CBM2
.ifndef AIM65
.ifndef SYM1
.ifndef MICROTAN
lda #$03
sta DSCLEN
.endif
.endif
.endif
.ifndef CONFIG_11
lda #$2C
sta LINNUM+1
.endif
jsr CRDO
.endif
.ifdef CBM2
inx
stx INPUTBUFFER-3
stx INPUTBUFFER-4
.endif
.ifdef APPLE
lda #$01
sta INPUTBUFFER-3
sta INPUTBUFFER-4
.endif
ldx #TEMPST
stx TEMPPT
.ifndef CONFIG_CBM_ALL
lda #<QT_MEMORY_SIZE
ldy #>QT_MEMORY_SIZE
jsr STROUT
.ifdef APPLE
jsr INLINX
.else
jsr NXIN
.endif
stx TXTPTR
sty TXTPTR+1
jsr CHRGET
.ifndef AIM65
.ifndef SYM1
cmp #$41
beq PR_WRITTEN_BY
.endif
.endif
tay
bne L40EE
.endif
.ifndef CBM2
lda #<RAMSTART2
.endif
ldy #>RAMSTART2
.ifdef CONFIG_2
sta TXTTAB
sty TXTTAB+1
.endif
sta LINNUM
sty LINNUM+1
.ifdef CBM2
tay
.else
ldy #$00
.endif
L40D7:
inc LINNUM
bne L40DD
inc LINNUM+1
.ifdef CBM1
; CBM: hard RAM top limit is $8000
lda LINNUM+1
cmp #$80
beq L40FA
.endif
.ifdef CBM2
; optimized version of the CBM1 code - modified for ebadger6502
lda LINNUM+1
cmp #$C0
beq L40FA
; bmi L40FA
.endif
.if .def(AIM65)
; AIM65: hard RAM top limit is $A000
lda LINNUM+1
cmp #$A0
beq L40FA
.endif
L40DD:
.ifdef CONFIG_2
lda #$55 ; 01010101 / 10101010
.else
lda #$92 ; 10010010 / 00100100
.endif
sta (LINNUM),y
cmp (LINNUM),y
bne L40FA
asl a
sta (LINNUM),y
cmp (LINNUM),y
.ifdef CONFIG_CBM_ALL
beq L40D7
.else
.ifndef CONFIG_11
beq L40D7; old: faster
bne L40FA
.else
bne L40FA; new: slower
beq L40D7
.endif
L40EE:
jsr CHRGOT
jsr LINGET
tay
beq L40FA
jmp SYNERR
.endif
L40FA:
lda LINNUM
ldy LINNUM+1
sta MEMSIZ
sty MEMSIZ+1
.if !(.def(MICROTAN) || .def(AIM65) || .def(SYM1))
sta FRETOP
sty FRETOP+1
.endif
L4106:
.ifndef CONFIG_CBM_ALL
.ifdef APPLE
lda #$FF
jmp L2829
.word STROUT ; PATCH!
jsr NXIN
.else
lda #<QT_TERMINAL_WIDTH
ldy #>QT_TERMINAL_WIDTH
jsr STROUT
jsr NXIN
.endif
stx TXTPTR
sty TXTPTR+1
jsr CHRGET
tay
beq L4136
jsr LINGET
lda LINNUM+1
bne L4106
lda LINNUM
cmp #$10
bcc L4106
L2829:
sta Z17
L4129:
.ifdef AIM65
sbc #$0A
.else
sbc #$0E
.endif
bcs L4129
eor #$FF
.ifdef AIM65
sbc #$08
.else
sbc #$0C
.endif
clc
adc Z17
sta Z18
.endif
L4136:
.ifdef CONFIG_RAM
lda #<QT_WANT
ldy #>QT_WANT
jsr STROUT
jsr NXIN
stx TXTPTR
sty TXTPTR+1
jsr CHRGET
ldx #<RAMSTART1
ldy #>RAMSTART1
cmp #'Y'
beq L4183
cmp #'A'
beq L4157
cmp #'N'
bne L4136
L4157:
ldx #<IQERR
ldy #>IQERR
stx UNFNC_ATN
sty UNFNC_ATN+1
ldx #<ATN ; overwrite starting
ldy #>ATN ; with ATN
cmp #'A'
beq L4183
ldx #<IQERR
ldy #>IQERR
stx UNFNC_COS
sty UNFNC_COS+1
stx UNFNC_TAN
sty UNFNC_TAN+1
stx UNFNC_SIN
sty UNFNC_SIN+1
ldx #<SIN_COS_TAN_ATN ; overwrite
ldy #>SIN_COS_TAN_ATN ; all of trig.s
L4183:
.else
ldx #<RAMSTART2
ldy #>RAMSTART2
.endif
stx TXTTAB
sty TXTTAB+1
ldy #$00
tya
sta (TXTTAB),y
inc TXTTAB
.ifndef CBM2
bne L4192
inc TXTTAB+1
L4192:
.endif
.if CONFIG_SCRTCH_ORDER = 1
jsr SCRTCH
.endif
lda TXTTAB
ldy TXTTAB+1
jsr REASON
.ifdef CBM2
lda #<QT_BASIC
ldy #>QT_BASIC
jsr STROUT
.else
jsr CRDO
.endif
lda MEMSIZ
sec
sbc TXTTAB
tax
lda MEMSIZ+1
sbc TXTTAB+1
jsr LINPRT
lda #<QT_BYTES_FREE
ldy #>QT_BYTES_FREE
jsr STROUT
.if CONFIG_SCRTCH_ORDER = 2
jsr SCRTCH
.endif
.ifdef CONFIG_CBM_ALL
jmp RESTART
.elseif .def(AIM65)
lda #<CRDO
ldy #>CRDO
sta GORESTART+1
sty GORESTART+2
jmp RESTART
.else
lda #<STROUT
ldy #>STROUT
sta GOSTROUT+1
sty GOSTROUT+2
.if CONFIG_SCRTCH_ORDER = 3
jsr SCRTCH
.endif
lda #<RESTART
ldy #>RESTART
sta GORESTART+1
sty GORESTART+2
jmp (GORESTART+1)
.endif
.if .def(CONFIG_RAM) || .def(OSI)
; OSI is compiled for ROM, but includes
; this unused string
QT_WANT:
.byte "WANT SIN-COS-TAN-ATN"
.byte 0
.endif
QT_WRITTEN_BY:
.ifndef CONFIG_CBM_ALL
.if !(.def(AIM65) || .def(SYM1))
.ifdef APPLE
asc80 "COPYRIGHT 1977 BY MICROSOFT CO"
.byte CR,0
.else
.byte CR,LF,$0C ; FORM FEED
.ifndef CONFIG_11
.byte "WRITTEN BY RICHARD W. WEILAND."
.else
.byte "WRITTEN BY WEILAND & GATES"
.endif
.byte CR,LF,0
.endif
.endif
QT_MEMORY_SIZE:
.byte "MEMORY SIZE"
.byte 0
QT_TERMINAL_WIDTH:
.if !(.def(AIM65) || .def(SYM1))
.byte "TERMINAL "
.endif
.byte "WIDTH"
.byte 0
.endif
QT_BYTES_FREE:
.byte " BYTES FREE"
.ifdef CBM1
.elseif .def(CBM2)
.byte CR,0
.elseif .def(APPLE)
.byte 0
.else
.byte CR,LF,CR,LF
.endif
QT_BASIC:
.ifdef OSI
.byte "OSI 6502 BASIC VERSION 1.0 REV 3.2"
.endif
.if .def(KIM)
.byte "MOS TECH 6502 BASIC V1.1"
.endif
.ifdef MICROTAN
.byte "MICROTAN BASIC"
.endif
.ifdef AIM65
.byte " AIM 65 BASIC V1.1"
.endif
.ifdef SYM1
.byte "BASIC V1.1"
.endif
.ifdef CBM1
.byte $13 ; HOME
.byte "*** COMMODORE BASIC ***"
.byte $10,$13,$10,$13,0 ; DOWN/DOWN/DOWN
.endif
.ifdef CBM2
.byte CR, LF
.byte "### COMMODORE BASIC ###"
.byte CR,LF,CR,LF,0
.endif
.ifdef APPLE
.byte LF,CR,LF
.byte "APPLE BASIC V1.1"
.endif
.ifndef CONFIG_CBM_ALL
.byte CR,LF
.ifdef MICROTAN
.byte "(C) 1980 MICROSOFT"
.elseif .def(AIM65)
.byte 0
.byte "(C) 1978 MICROSOFT"
.elseif .def(SYM1)
.byte "COPYRIGHT 1978 SYNERTEK SYSTEMS CORP."
.else
.byte "COPYRIGHT 1977 BY MICROSOFT CO."
.endif
.byte CR,LF
.ifndef AIM65
.byte 0
.endif
.endif
.endif