A2osX/SHARED/X.PRINTF.S.txt

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