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Kernel 0.9.1 : STDIO, saved many bytes in PrintF
This commit is contained in:
Rémy GIBERT
parent
e2f8f7cb0e
commit
5dff2a4459
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@ -657,14 +657,14 @@ K.SScanF jsr PullPtr1Ptr2Ptr3
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cmp #'d' BYTE ?
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bne .3
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stz ASCBUF
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* stz ASCBUF
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.20 lda (ZPPtr1)
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jsr STDIO.IsDigit
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bcs .21
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phx
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inc ASCBUF
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ldx ASCBUF
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sta ASCBUF,x
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* inc ASCBUF
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* ldx ASCBUF
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* sta ASCBUF,x
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plx
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jsr K.SScanF.IncPtr1
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bne .20 end of string ?
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@ -728,8 +728,8 @@ K.SScanF.IncPtr1
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* %d : pull 1 byte unsigned DEC 0..255
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* %D : pull 2 bytes unsigned DEC 0..65535
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* %u : pull 2 bytes PTR to 4 bytes long unsigned DEC 0..4294967295
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* %e : pull 2 bytes PTR to 6 Bytes Real +1.23456789e+12
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* %f : pull 2 bytes PTR to 6 Bytes Real 3.1415
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* %e : pull 2 bytes PTR to 5 Bytes float +1.23456789e+12
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* %f : pull 2 bytes PTR to 5 Bytes float 3.1415
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* %h : pull 1 byte to Print HEX
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* %H : pull 2 bytes to Print HEX
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* %i : pull 1 byte to Print signed DEC -128..127
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@ -878,27 +878,66 @@ PrintF.B.1 ldx #8
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bne .1
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rts
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*--------------------------------------
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PrintF.D >PULLB HEXBUF
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PrintF.I sec signed short
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.HS 90 BCC
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PrintF.D clc unsigned short (BYTE)
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ldx #0 one byte
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>PULLB HEXBUF
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stz HEXBUF+1
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bra PrintF.DD.1
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PrintF.DD >PULLW HEXBUF
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PrintF.II sec signed int
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.HS 90 BCC
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PrintF.DD clc unsigned int (WORD)
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ldx #1 two bytes
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>PULLW HEXBUF
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PrintF.DD.1 stz HEXBUF+2
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stz HEXBUF+3
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bra PrintF.U.1
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PrintF.L sec signed long
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.HS 90 BCC
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PrintF.U clc unsigned long (DWORD)
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ldx #3 4 bytes
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PrintF.U >PULLW ZPPtr2
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>PULLW ZPPtr2
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ldy #3
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.1 lda (ZPPtr2),y
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sta HEXBUF,y
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dey
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bpl .1
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PrintF.U.1 bcc .8 unsigned, nothing to check
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PrintF.U.1 stz SIGN
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jsr HEX2DEC
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jmp PrintDEC
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*--------------------------------------
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lda HEXBUF,x get sign
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bpl .8
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* sec
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ldy #0
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.1 lda HEXBUF,y two's complement of X bytes
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eor #$ff
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adc #0
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sta HEXBUF,y
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iny
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dex
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bpl .1
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sec tell to print a "-" sign....
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.8 jmp HEX2DEC
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*--------------------------------------
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* .HS 9E 6E6B2800 1,000,000,000
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* EXP(8) 1(s) 1significants(31)
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* http://apple2.org.za/gswv/a2zine/GS.WorldView/Resources/GS.TECH.INFO/AppleSoft/
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*--------------------------------------
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PrintF.E
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* >PULLW ZPPtr2
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* rts
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@ -916,94 +955,7 @@ PrintF.H >PULLA
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PrintF.H.1 pha
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jsr PrintF.NN.1
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pla
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jmp PrintF.N.1
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*--------------------------------------
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PrintF.I >PULLB HEXBUF
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eor #$ff if positive, it becomes neg so branch if....minus!
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clc
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bmi .1
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sec
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inc 2s complement...
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sta HEXBUF
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.1 stz HEXBUF+1
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bra PrintF.II.1
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PrintF.II >PULLW HEXBUF A=HI
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eor #$ff
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clc
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bmi PrintF.II.1
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sec
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tax
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lda HEXBUF
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eor #$ff
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inc 2s complement...
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sta HEXBUF
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bne .1
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inx
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.1 sta HEXBUF
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stx HEXBUF+1
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PrintF.II.1 stz HEXBUF+2
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stz HEXBUF+3
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bra PrintF.L.1
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PrintF.L >PULLW ZPPtr2
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ldy #3
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.1 lda (ZPPtr2),y
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sta HEXBUF,y
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dey
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bpl .1
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PrintF.L.1 ror SIGN
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jsr HEX2DEC
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*--------------------------------------
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PRINTDEC lda PADLEN any Len format ?
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beq .1 no
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lda #10
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sec yes, Print only digits starting at pos 10-padlen
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sbc PADLEN
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.1 tax x=0 if no padlen, or x=10-padlen
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.2 lda ASCBUF,x
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cmp #'0' a zero?
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beq .3
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inc PADLEN found a non zero, Print all digits, even if 0, next time
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ldy #'0'
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sty PADCHAR
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bra .4
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.3 cpx #9 last digit ?
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beq .4 Print always
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ldy PADLEN no pad to fill, do not Print 0
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beq .6
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lda PADCHAR fill with PADCHAR
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.4 bit SIGN a sign to print before digits ?
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bpl .5
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pha yes, save whatever we have to print....
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lda #'-'
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jsr Printf.Cout
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stz SIGN reset flag for next char...
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pla
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.5 jsr Printf.Cout
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bcs .9
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.6 inx
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cpx #10
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bne .2
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clc
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.9 rts
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bra PrintF.N.1
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*--------------------------------------
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PrintF.N >PULLA
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PrintF.N.1 and #$0F
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@ -1122,13 +1074,21 @@ STDIO.IsDigit cmp #'0'
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.1 sec
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rts
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*--------------------------------------
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SIGN .BS 1
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STDIO.AT10
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*--------------------------------------
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PADLEN .BS 1
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PADCHAR .BS 1
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*--------------------------------------
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*EXP .BS 1
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HEXBUF .BS 4
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bNeg .BS 1
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BCDBUF .BS 5 5, enough to handle 10 digits (32bits)
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*--------------------------------------
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* Convert HEXBUF to ASCBUF decimal padded with 0
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*--------------------------------------
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HEX2DEC ldx #4
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HEX2DEC ror bNeg
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ldx #4
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.1 stz BCDBUF,x Clear all 5 bytes
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dex
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@ -1155,32 +1115,62 @@ HEX2DEC ldx #4
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bne .2
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cld
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ldy #4
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ldx #9
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.4 lda BCDBUF,y
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pha
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and #$0F
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ora #$30
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sta ASCBUF,x
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dex
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pla
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lsr
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lsr
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lsr
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lsr
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ora #$30
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sta ASCBUF,x
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dey
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dex
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bpl .4
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rts
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*--------------------------------------
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HEXBUF .BS 4
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BCDBUF .BS 5 5, enough to handle 10 digits (32bits)
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ASCBUF .BS 12 LEN + sign + 10 digits ($FFFFFFFF=4.294.967.295)
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bit bNeg a -sign to print before digits ?
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bpl .9
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lda #'-'
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jsr Printf.Cout
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.9 lda PADLEN any Len format ?
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beq .4 no
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lda #10
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sec yes, Print only digits starting at pos 10-padlen
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sbc PADLEN
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.4 tax x=0 if no padlen, or x=10-padlen
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.5 txa X range 0 to 9
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lsr CS if lo nibble (1,3,5,7,9)
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tay
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lda BCDBUF,y
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bcs .6
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lsr
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lsr
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lsr
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lsr
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.6 and #$0F
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ora #$30
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cmp #'0' a zero?
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beq .7
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inc PADLEN found a non zero, Print all digits, even if 0, next time
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ldy #'0'
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sty PADCHAR
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bra .8
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.7 cpx #9 last digit ?
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beq .8 Print always
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ldy PADLEN no pad to fill, do not Print 0
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beq .10
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lda PADCHAR fill with PADCHAR
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.8 jsr Printf.Cout
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bcs .99
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.10 inx
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cpx #10
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bne .5
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clc
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.99 rts
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*--------------------------------------
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MAN
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SAVE /A2OSX.SRC/SYS/KERNEL.S.STDIO
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