A2osX/X.PRINTF.S.txt

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PR#3
PREFIX /A2OSX.BUILD
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NEW
INC 1
AUTO 6
.LIST OFF
*--------------------------------------
PrintPStrAX >STAX TmpPtr1
lda (TmpPtr1)
tax
beq .9
ldy #1
.1 lda (TmpPtr1),y
ora #$80
jsr $FDED COUT
iny
dex
bne .1
.9 rts
*--------------------------------------
PrintCStrAX >STAX TmpPtr1
pla
sta .91+1
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pla
sta .9+1
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ldy #0
.1 stz X.b0Flag
stz X.DigitCount
lda (TmpPtr1),y
beq .9
cmp #'%'
bne .5
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.11 iny
lda (TmpPtr1),y
beq .9
cmp #'0'
bne .22
ror X.b0Flag beq -> CS
bra .11
.22 bcc .21
cmp #'9'+1
bcs .21
and #$0f
sta X.DigitCount
bra .11
.21 cmp #'d'
bne .2
pla
jsr PrintADec
bra .8
.2 cmp #'D'
bne .3
plx
pla
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jsr PrintAXDec
bra .8
.3 cmp #'h'
bne .4
pla
jsr $FDDA PRBYTE
bra .8
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.4 cmp #'H'
bne .5
pla
jsr $FDDA PRBYTE
pla
jsr $FDDA PRBYTE
bra .8
.5 cmp #'\'
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bne .7
iny
lda (TmpPtr1),y
beq .9
cmp #'n'
bne .9
lda #$0D
.7 ora #$80
jsr $FDED COUT
.8 iny
bne .1
.9 lda #$ff Self modified RTS HI
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pha
.91 lda #$ff Self modified RTS LO
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pha
rts
*--------------------------------------
PrintADec ldx #0
PrintAXDec >STAX X.HexBuffer
stz X.BCDBuffer
stz X.BCDBuffer+1
stz X.BCDBuffer+2
phy
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 jsr $FDED COUT
.81 iny
cpy #6
bne .6
.9 ply
rts
*--------------------------------------
*--------------------------------------
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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