2020-03-12 16:44:11 +00:00
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NEW
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AUTO 3,1
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*--------------------------------------
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MATH32 jmp (.1,x)
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.1 .DA MATH32.ADD
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.DA MATH32.SUB
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.DA MATH32.UMUL
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.DA MATH32.IMUL
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.DA MATH32.UDIV
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.DA MATH32.IDIV
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.DA MATH32.UMOD
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.DA MATH32.IMOD
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.DA MATH32.UCMP
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.DA MATH32.ICMP
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*--------------------------------------
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MATH32.ADD clc
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.HS B0 BCS
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MATH32.SUB sec
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php
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jsr MATH32.PopACC32
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ldy #0
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ldx #3
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plp
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bcs .1
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lda #$79 ADC Absolute,Y
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.HS 2C BIT ABS
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.1 lda #$F9 SBC Absolute,Y
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sta .3
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.2 lda (pStack),y
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.3 adc ACC32,y SELF MODIFIED
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sta (pStack),y
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iny
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dex
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bpl .2
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MATH32.SUB.RTS rts
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*--------------------------------------
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* Returns:
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* ff X < Y
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* 0 X = Y
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* 1 X > Y
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*--------------------------------------
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MATH32.UCMP
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MATH32.ICMP jsr MATH32.SUB
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jsr MATH32.PopACC32 A = ACC32+3 (sign)
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tay
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bmi .2
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.1 ora ACC32+2
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ora ACC32+1
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ora ACC32
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beq .8
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lda #1
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rts
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.2 lda #$ff
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.8 rts
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*--------------------------------------
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MATH32.UMUL clc
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.HS B0 BCS
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MATH32.IMUL sec
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php
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jsr MATH32.MULDIVMOD.COMMON
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jsr MATH32.MUL
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plp
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bcc MATH32.PutTMP32
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MATH32.RETURN.ITMP
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lda ACC32.Sign
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eor ARG32.Sign
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bpl MATH32.PutTMP32
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bra MATH32.PutNotTMP32
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*--------------------------------------
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MATH32.UDIV clc
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.HS B0 BCS
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MATH32.IDIV sec
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clv
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bra MATH32.MOD
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MATH32.UMOD clc
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.HS B0 BCS
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MATH32.IMOD sec
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bit MATH32.SUB.RTS $60
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MATH32.MOD php
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jsr MATH32.MULDIVMOD.COMMON
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jsr MATH32.DIVMOD
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plp
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bcc .3 unsigned
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bvs MATH32.RETURN.ITMP IMOD
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lda ACC32.Sign IDIV
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eor ARG32.Sign
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bpl MATH32.PutARG32
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bra MATH32.PutNotARG32
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.3 bvc MATH32.PutARG32 DIV
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*--------------------------------------
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MATH32.PutTMP32 lda #TMP32 MOD
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.HS 2C BIT ABS
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*--------------------------------------
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MATH32.PutARG32 lda #ARG32
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sta .1+1
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ldy #3
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.1 lda $ff,y SELF MODIFIED
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sta (pStack),y
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dey
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bpl .1
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rts
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*--------------------------------------
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MATH32.PutNotTMP32
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lda #TMP32
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.HS 2C BIT ABS
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*--------------------------------------
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MATH32.PutNotARG32
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lda #ARG32
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sta .1+1
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ldy #0
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ldx #3
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sec
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.1 lda $ff,y SELF MODIFIED
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eor #$ff two's complement of X bytes
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adc #0
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sta (pStack),y
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iny
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dex
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bpl .1
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rts
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*--------------------------------------
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MATH32.PopACC32 ldy #0
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.1 lda (pStack)
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inc pStack
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sta ACC32,y
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iny
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cpy #4
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bne .1
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sta ACC32.Sign
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rts
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*--------------------------------------
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MATH32.GetARG32 ldy #0
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.1 lda (pStack),y
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sta ARG32,y
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iny
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cpy #4
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bne .1
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sta ARG32.Sign
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MATH32.GetARG32.RTS
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rts
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*--------------------------------------
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MATH32.MULDIVMOD.COMMON
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php
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jsr MATH32.PopACC32
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jsr MATH32.GetARG32
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plp
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bcc MATH32.GetARG32.RTS
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2020-03-16 06:50:15 +00:00
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jsr MATH32.ACC32ABS
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jmp MATH32.ARG32ABS
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2020-03-12 16:44:11 +00:00
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*--------------------------------------
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* http://6502.org/source/integers/32muldiv.htm
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* http://nparker.llx.com/a2/mult.html
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*--------------------------------------
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* ARG32*ACC32->TMP32
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*--------------------------------------
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2020-03-16 06:50:15 +00:00
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MATH32.MUL jsr MATH32.TMP32ZERO
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2020-03-12 16:44:11 +00:00
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ldx #32
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.1 lsr ARG32+3
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ror ARG32+2
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ror ARG32+1
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ror ARG32
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bcc .3
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clc
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ldy #0
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.2 lda TMP32,y
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adc ACC32,y
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sta TMP32,y
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iny
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tya
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eor #4
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bne .2
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2020-03-16 06:50:15 +00:00
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.3 jsr MATH32.ACC32.T2
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2020-03-12 16:44:11 +00:00
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dex
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bne .1
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clc
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rts
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*--------------------------------------
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* ARG32 = ARG32 div ACC32
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* TMP32 = ARG32 mod ACC32
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*--------------------------------------
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2020-03-16 06:50:15 +00:00
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MATH32.DIVMOD jsr MATH32.TMP32ZERO
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2020-03-12 16:44:11 +00:00
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ldx #32
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.1 asl ARG32
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rol ARG32+1
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rol ARG32+2
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rol ARG32+3
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rol TMP32
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rol TMP32+1
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rol TMP32+2
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rol TMP32+3
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sec
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lda TMP32
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sbc ACC32
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pha
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lda TMP32+1
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sbc ACC32+1
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pha
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lda TMP32+2
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sbc ACC32+2
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pha
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lda TMP32+3
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sbc ACC32+3
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bcs .2
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pla
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pla
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pla
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dex
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bne .1
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rts
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.2 sta TMP32+3
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pla
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sta TMP32+2
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pla
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sta TMP32+1
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pla
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sta TMP32
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inc ARG32 bit0 always 0 because of .1 asl
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dex
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bne .1
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rts
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*--------------------------------------
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2020-03-16 06:50:15 +00:00
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MATH32.A2STR10NP ldx #3 3 digit max
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ldy #0 Disable Padding
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MATH32.A2STR10 jsr MATH32.A2ACC32
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clc unsigned
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*--------------------------------------
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* CS = signed long
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* CC = unsigned long
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* X = Pad Len
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* Y = Pad Char
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*--------------------------------------
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MATH32.ACC322STR10
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stx .5+1 Pad Len
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sty .81+1 Pad Char
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stz A2osX.NumStrLen
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bcc .1
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clc
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lda ACC32+3
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bpl .1
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jsr MATH32.ACC32NEG
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sec
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.1 ror ACC32.Sign Save sign
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ldx #4
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.2 stz RESULT,x Clear all 5 bytes
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dex
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bpl .2
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sed switch to BCD mode
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ldx #32 let's roll 32 bits
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.3 jsr MATH32.ACC32.T2
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ldy #4
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.4 lda RESULT,y
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adc RESULT,y
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sta RESULT,y
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dey
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bpl .4
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dex
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bne .3
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cld
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ldx .5+1 no padding
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beq .6
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lda #10 starts at 10-padlen
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sec
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.5 sbc #$ff SELF MODIFIED
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tax
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.6 txa
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lsr
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tay
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lda RESULT,y
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bcs .7
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lsr
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lsr
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lsr
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lsr
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.7 and #$0F
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ora #$30
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cmp #'0'
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beq .80
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ldy #'0' next 0s always printed
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sty .81+1
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bra .82
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.80 cpx #9 last char, print always
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beq .82
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.81 lda #$ff SELF MODIFIED Get Padding char
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beq .87
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.82 bit ACC32.Sign "-" to print ?
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bpl .86
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pha
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lda #'-'
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jsr .88
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stz ACC32.Sign
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pla
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.86 jsr .88
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.87 inx
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cpx #10
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bne .6
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lda #0
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.88 ldy A2osX.NumStrLen
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inc A2osX.NumStrLen
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sta A2osX.NumStrBuf,y
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rts
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*--------------------------------------
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* Convert Hex int at ZPPtr2 to ACC32
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*--------------------------------------
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MATH32.Hex2ACC32
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lda (ZPPtr2)
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beq .9
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2020-03-23 07:08:27 +00:00
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2020-03-16 06:50:15 +00:00
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jsr SHARED.IsHexDigit
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bcs .9
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2020-03-23 07:08:27 +00:00
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2020-03-16 06:50:15 +00:00
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jsr MATH32.A2ACC32
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2020-03-23 07:08:27 +00:00
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2020-03-16 06:50:15 +00:00
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ldy #0
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2020-03-23 07:08:27 +00:00
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2020-03-16 06:50:15 +00:00
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.1 iny
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lda (ZPPtr2),y
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beq .8
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2020-03-23 07:08:27 +00:00
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2020-03-16 06:50:15 +00:00
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jsr SHARED.IsHexDigit
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bcs .8
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2020-03-23 07:08:27 +00:00
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2020-03-16 06:50:15 +00:00
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pha
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ldx #4
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2020-03-23 07:08:27 +00:00
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2020-03-16 06:50:15 +00:00
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.2 jsr MATH32.ACC32.T2
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dex
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bne .2
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2020-03-23 07:08:27 +00:00
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2020-03-16 06:50:15 +00:00
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pla
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ora ACC32
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sta ACC32
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bra .1
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2020-03-23 07:08:27 +00:00
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2020-03-16 06:50:15 +00:00
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.8 clc
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rts
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2020-03-23 07:08:27 +00:00
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2020-03-16 06:50:15 +00:00
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.9 sec
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rts
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*--------------------------------------
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* Convert A to 2 hex digits in AX
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*--------------------------------------
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MATH32.AToHexAX pha
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and #$0F
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jsr .8
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tax
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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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.8 ora #$30
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cmp #'9'+1
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bcc .9
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adc #6
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.9 rts
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*--------------------------------------
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* Convert Decimal int at ZPPtr2 to ACC32
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*--------------------------------------
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MATH32.Dec2ACC32
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jsr MATH32.ACC32ZERO
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clc
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lda (ZPPtr2)
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eor #'-'
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bne .10
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jsr SHARED.NextCharPtr2 skip '-'
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sec
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.10 ror .80+1 set pos/neg flag
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ldy #$ff
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.1 iny
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|
lda (ZPPtr2),y
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beq .8
|
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jsr ZP.IsDigit
|
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bcs .8
|
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|
phy Save Y, pointing to next char
|
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|
jsr MATH32.ACC32.T10
|
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|
ply
|
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|
bcs .9
|
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|
lda (ZPPtr2),y
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|
and #$0F
|
|
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|
* clc
|
|
|
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|
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|
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|
adc ACC32
|
|
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|
|
sta ACC32
|
|
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|
bcc .1
|
|
|
|
|
|
inc ACC32+1
|
|
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|
bne .1
|
|
|
|
|
|
inc ACC32+2
|
|
|
|
|
|
bne .1
|
|
|
|
|
|
inc ACC32+3
|
|
|
|
|
|
bne .1 if 0, overflow!!!
|
|
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|
|
.9 lda #E.INUM
|
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|
sec
|
|
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|
|
rts
|
|
|
|
|
|
|
|
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|
.8 tya no digit parsed...error
|
|
|
|
|
|
beq .9
|
|
|
|
|
|
|
|
|
|
|
|
.80 lda #$FF SELF MODIFIED
|
|
|
|
|
|
bpl .88
|
|
|
|
|
|
|
|
|
|
|
|
phy
|
|
|
|
|
|
jsr MATH32.ACC32NEG
|
|
|
|
|
|
ply
|
|
|
|
|
|
|
|
|
|
|
|
.88 clc
|
|
|
|
|
|
rts
|
|
|
|
|
|
*--------------------------------------
|
|
|
|
|
|
MATH32.ACC32.T10
|
|
|
|
|
|
ldx #3
|
|
|
|
|
|
|
|
|
|
|
|
.1 lda ACC32,x save ACC32 for 4+1
|
|
|
|
|
|
pha
|
|
|
|
|
|
dex
|
|
|
|
|
|
bpl .1
|
|
|
|
|
|
|
|
|
|
|
|
jsr MATH32.ACC32.T2 ACC32 * 2 -> ACC32
|
|
|
|
|
|
jsr MATH32.ACC32.T2 ACC32 * 4 -> ACC32
|
|
|
|
|
|
|
|
|
|
|
|
ldx #0
|
|
|
|
|
|
ldy #4
|
|
|
|
|
|
* clc
|
|
|
|
|
|
|
|
|
|
|
|
.2 pla ACC32 * 4 + ACC32 -> ACC32
|
|
|
|
|
|
adc ACC32,x
|
|
|
|
|
|
sta ACC32,x
|
|
|
|
|
|
inx
|
|
|
|
|
|
dey
|
|
|
|
|
|
bne .2
|
|
|
|
|
|
|
|
|
|
|
|
MATH32.ACC32.T2 asl ACC32
|
|
|
|
|
|
rol ACC32+1
|
|
|
|
|
|
rol ACC32+2
|
|
|
|
|
|
rol ACC32+3
|
|
|
|
|
|
rts
|
|
|
|
|
|
*--------------------------------------
|
|
|
|
|
|
MATH32.A2ACC32 sta ACC32
|
|
|
|
|
|
.HS 2C BIT ABS
|
|
|
|
|
|
MATH32.ACC32ZERO
|
|
|
|
|
|
stz ACC32
|
|
|
|
|
|
stz ACC32+1
|
|
|
|
|
|
stz ACC32+2
|
|
|
|
|
|
stz ACC32+3
|
|
|
|
|
|
rts
|
|
|
|
|
|
*--------------------------------------
|
|
|
|
|
|
MATH32.TMP32ZERO
|
|
|
|
|
|
stz TMP32
|
|
|
|
|
|
stz TMP32+1
|
|
|
|
|
|
stz TMP32+2
|
|
|
|
|
|
stz TMP32+3
|
|
|
|
|
|
rts
|
|
|
|
|
|
*--------------------------------------
|
|
|
|
|
|
MATH32.ARG32ABS lda ARG32.Sign
|
|
|
|
|
|
bmi MATH32.ARG32NEG
|
|
|
|
|
|
rts
|
|
|
|
|
|
*--------------------------------------
|
|
|
|
|
|
MATH32.ACC32ABS lda ACC32.Sign
|
|
|
|
|
|
bpl MATH32.ACC32NEG.RTS
|
|
|
|
|
|
*--------------------------------------
|
|
|
|
|
|
MATH32.ACC32NEG ldy #ACC32
|
|
|
|
|
|
.HS 2C BIT ABS
|
|
|
|
|
|
MATH32.ARG32NEG ldy #ARG32
|
|
|
|
|
|
|
|
|
|
|
|
ldx #3
|
|
|
|
|
|
sec
|
|
|
|
|
|
|
|
|
|
|
|
.1 lda $0,y two's complement of X bytes
|
|
|
|
|
|
eor #$ff
|
|
|
|
|
|
adc #0
|
|
|
|
|
|
sta $0,y
|
|
|
|
|
|
iny
|
|
|
|
|
|
dex
|
|
|
|
|
|
bpl .1
|
|
|
|
|
|
MATH32.ACC32NEG.RTS
|
|
|
|
|
|
rts
|
|
|
|
|
|
*--------------------------------------
|
2020-03-12 16:44:11 +00:00
|
|
|
|
MAN
|
|
|
|
|
|
SAVE USR/SRC/SYS/KERNEL.S.MATH32
|
|
|
|
|
|
LOAD USR/SRC/SYS/KERNEL.S
|
|
|
|
|
|
ASM
|
