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AppleIIAsm-Collection/source/disk4_math/T.MULT16.SUB.MIN

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Math Routines 0.2.0 update - fixed a plethora of bugs - overhauled demo - integrated shared required library and macros - began early planning of floating-point routines and macros - created minified, no-comment versions of every routine
2018-12-21 21:47:01 +00:00
MULT16
PLA
STA RETADR
PLA
STA RETADR+1
PLA
STA :MLIER
PLA
STA :MLIER+1
PLA
STA :MCAND
PLA
STA :MCAND+1
LDA #0
Disk 4: MATH 0.3.0 updates - separated each subroutine into own file - minor changes to comments - not too many changes for 0.3.0, really. Major changes for this disk will come with 0.5.0
2019-01-21 03:03:35 +00:00
STA :HPROD ; ZERO HIGH WORD
Math Routines 0.2.0 update - fixed a plethora of bugs - overhauled demo - integrated shared required library and macros - began early planning of floating-point routines and macros - created minified, no-comment versions of every routine
2018-12-21 21:47:01 +00:00
STA :HPROD+1
Disk 4: MATH 0.3.0 updates - separated each subroutine into own file - minor changes to comments - not too many changes for 0.3.0, really. Major changes for this disk will come with 0.5.0
2019-01-21 03:03:35 +00:00
LDX #17 ; # OF BITS IN MPLIER
; PLUS 1. EXTRA LOOP IS
; TO MOVE LAST CARRY INTO
; THE PRODUCT.
CLC ; CLEAR CARRY FOR 1ST TIME
; THROUGH LOOP.
Math Routines 0.2.0 update - fixed a plethora of bugs - overhauled demo - integrated shared required library and macros - began early planning of floating-point routines and macros - created minified, no-comment versions of every routine
2018-12-21 21:47:01 +00:00
:MULLP
ROR :HPROD+1
ROR :HPROD
ROR :MLIER+1
ROR :MLIER
Disk 4: MATH 0.3.0 updates - separated each subroutine into own file - minor changes to comments - not too many changes for 0.3.0, really. Major changes for this disk will come with 0.5.0
2019-01-21 03:03:35 +00:00
BCC :DECCNT ; BR IF NEXT BIT OF
CLC ; NEXT BIT=1 SO ADD MCAND
Math Routines 0.2.0 update - fixed a plethora of bugs - overhauled demo - integrated shared required library and macros - began early planning of floating-point routines and macros - created minified, no-comment versions of every routine
2018-12-21 21:47:01 +00:00
LDA :MCAND
ADC :HPROD
STA :HPROD
LDA :MCAND+1
ADC :HPROD+1
Disk 4: MATH 0.3.0 updates - separated each subroutine into own file - minor changes to comments - not too many changes for 0.3.0, really. Major changes for this disk will come with 0.5.0
2019-01-21 03:03:35 +00:00
STA :HPROD+1 ; CARRY = OVERFLOW
Math Routines 0.2.0 update - fixed a plethora of bugs - overhauled demo - integrated shared required library and macros - began early planning of floating-point routines and macros - created minified, no-comment versions of every routine
2018-12-21 21:47:01 +00:00
:DECCNT
DEX
Disk 4: MATH 0.3.0 updates - separated each subroutine into own file - minor changes to comments - not too many changes for 0.3.0, really. Major changes for this disk will come with 0.5.0
2019-01-21 03:03:35 +00:00
BNE :MULLP ; CONTINUE UNTIL DONE
LDY :HPROD ; LOW BYTE OF HIGH WORD
LDX :HPROD+1 ; HIGH BYTE OF HIGH WORD
Math Routines 0.2.0 update - fixed a plethora of bugs - overhauled demo - integrated shared required library and macros - began early planning of floating-point routines and macros - created minified, no-comment versions of every routine
2018-12-21 21:47:01 +00:00
LDA :MLIER+1
TAX
STX RETURN+1
LDA :MLIER
TAY
STY RETURN
LDA :HPROD
STA RETURN+2
LDA #2
STA RETLEN
LDA RETADR+1
PHA
LDA RETADR
PHA
Disk 4: MATH 0.3.0 updates - separated each subroutine into own file - minor changes to comments - not too many changes for 0.3.0, really. Major changes for this disk will come with 0.5.0
2019-01-21 03:03:35 +00:00
LDA :HPROD ;24BIT
Math Routines 0.2.0 update - fixed a plethora of bugs - overhauled demo - integrated shared required library and macros - began early planning of floating-point routines and macros - created minified, no-comment versions of every routine
2018-12-21 21:47:01 +00:00
RTS
:MCAND DS 3
:MLIER DS 3
:HPROD DS 2
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