A2osX/X.PRINTF.S.txt

230 lines
3.8 KiB
Plaintext
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

PR#3
PREFIX /A2OSX.BUILD
NEW
INC 1
AUTO 6
.LIST OFF
*--------------------------------------
PrintFAX sta PrintFAX.Next+1
stx PrintFAX.Next+2
pla
sta PrintFAX.99+1
pla
sta PrintFAX.98+1
lda $C011 RDLCBNK2
sta PrintFAX.91+1
lda $C012 RDLCRAM
sta PrintFAX.90+1
lda $C08A RROMBNK1, make sure $D000-$FFFF ROM selected
lda $CFFF get access to $C800-$CFFF internal ROM
PrintFAX.1 stz X.b0Flag
stz X.DigitCount
jsr PrintFAX.Next
beq PrintFAX.90
cmp #'%'
bne .7
.2 jsr PrintFAX.Next
beq PrintFAX.90
cmp #'0'
bne .3
ror X.b0Flag beq -> CS
bra .2
.3 bcc .4
cmp #'9'+1
bcs .4
and #$0f
sta X.DigitCount
bra .2
.4 ldx #PrintFAX.Tbl-PrintFAX.Esc-1
.5 cmp PrintFAX.Esc,x
beq .6
dex
bpl .5
bra PrintFAX.1
.6 txa
asl
tax
jmp (PrintFAX.Tbl,x)
.7 cmp #'\'
bne .8
jsr PrintFAX.Next
beq PrintFAX.90
cmp #'n'
bne .8
lda #$0D
.8 ora #$80
jsr $FDED COUT
bra PrintFAX.1
PrintFAX.90 lda #$ff
bpl PrintFAX.98 ROM was selected, nothing to do
PrintFAX.91 lda #$ff
bmi PrintFAX.92 RAM bank 2 was selected
ldx #$8B RRAMWRAMBNK1
.HS 2C bit abs
PrintFAX.92 ldx #$83 RRAMWRAMBNK2
lda $C000,x
lda $C000,x
PrintFAX.98 lda #$ff Self modified RTS HI
pha
PrintFAX.99 lda #$ff Self modified RTS LOPrintFAXPrintFAX
pha
rts
*--------------------------------------
PrintFAX.Next lda $ffff
beq .8
inc PrintFAX.Next+1
bne .8
inc PrintFAX.Next+2 Always !=0
.8 rts
*--------------------------------------
PrintFAX.Esc .AS "dDhHS"
PrintFAX.Tbl .DA PrintFAX.D
.DA PrintFAX.DD
.DA PrintFAX.H
.DA PrintFAX.HH
.DA PrintFAX.S
*--------------------------------------
PrintFAX.D ldx #0
.HS D0 bne
PrintFAX.DD plx
pla
sta X.HexBuffer
stx X.HexBuffer+1
stz X.BCDBuffer
stz X.BCDBuffer+1
stz X.BCDBuffer+2
ldx #16 let's roll 16 bits
sed
.2 asl X.HexBuffer
rol X.HexBuffer+1
php cpy will disturb carry while BCD adc
ldy #0
.3 plp
lda X.BCDBuffer,y
adc X.BCDBuffer,y
sta X.BCDBuffer,y
php
iny
cpy #3 Last byte of X.BCDBufferBUF?
bne .3
plp
dex
bne .2
cld
ldx #0
ldy #5
.4 lda X.BCDBuffer,x
pha
and #$0F
ora #$B0
sta X.DigitBuffer,y
dey
pla
lsr
lsr
lsr
lsr
ora #$B0
sta X.DigitBuffer,y
inx
dey
bpl .4
lda X.DigitCount
beq .5
lda #6
sec
sbc X.DigitCount
.5 tay
.6 lda X.DigitBuffer,y
cmp #"0"
beq .7
sec
ror X.b0Flag
bra .8
.7 cpy #5
beq .8
lda #" "
bit X.b0Flag
bpl .81
lda #"0"
.8 phy
jsr $FDED COUT
ply
.81 iny
cpy #6
bne .6
.9 jmp PrintFAX.1
*--------------------------------------
PrintFAX.HH pla
jsr $FDDA PRBYTE
PrintFAX.H pla
jsr $FDDA PRBYTE
jmp PrintFAX.1
*--------------------------------------
PrintFAX.S pla
sta .1+2
sta .2+2
pla
sta .1+1
sta .2+1
.1 lda $ffff
beq .9
tax
ldy #1
.2 lda $ffff,y
ora #$80
jsr $FDED COUT
iny
dex
bne .2
.9 jmp PrintFAX.1
*--------------------------------------
X.HexBuffer .BS 2
X.BCDBuffer .BS 3
X.b0Flag .BS 1
X.DigitCount .BS 1
X.DigitBuffer .BS 6
*--------------------------------------
MAN
SAVE /A2OSX.SRC/X.PRINTF.S