32-bit divide/multiply
ZXNet echo conference «code.zx»
Hello, All!
We need quick subject procedures.
Does anyone know how to do this? And what is the result?
At the same time, 16-bit is possible, I’ll compare it with mine.
;BC=BC/DE
;HL=remainder
DIV LD A,B
LD B,#10
LD HL,0
DIV1 RL C
R.L.A.
ADC HL,HL
SBC HL,DE
JR NC,DIV2
ADD HL,DE
DIV2 CCF
DJNZ DIV1
RL C
R.L.A.
LD B,A
RET
;HLBC=DE*BC
MUL LD HL,0
LD A,17
MUL0 RR B
RR C
DEC A
RET Z
JR NC,$+3
ADD HL,DE
RR H
RR L
JP MUL0
WBR, Jason.
/*e-mail: jason2000(scary dog)yandex.ru ICQ: 62235830*/
/np:/ *silence*
||*()*|| Hello, _/Valerij/_!
December 04, 2002 06:43, Valerij Kozhevnikoff wrote to All:
VK> We need quick subject procedures.
VK> Does anyone know how to do this? And what is the result?
VK> At the same time, you can compare 16-bit with mine.
I did it once, HLDE/H'L'D'E'... But obviously not so fast. Only for
calculator, or Fort.
All the best! /*Gandalf*/ *Grey* was with you. ||*()*||
Hello, Aleksey!
07 Dec 02 10:41, Aleksey Senilov -> Valerij Kozhevnikoff:
VK>> Quick subject procedures are needed.
VK>> Does anyone know how to do this? And what is the result?
VK>> At the same time, you can compare 16-bit with mine.
AS> I did it once, HLDE/H'L'D'E' ... But obviously not so fast. Only for
AS> calculator, or Forth.
Found a library of arithmetic procedures for CP/M. What's not there? And
32-bit arithmetic and floating point, etc. etc. Who needs it?
Although it is under M80, Alasm should digest it normally.
WBR, Jason.
/*e-mail: jason2000(scary dog)yandex.ru ICQ: 62235830*/
/np:/ *silence*
||*()*|| Hello, _/Valerij/_!
December 11, 2002 04:54, Valerij Kozhevnikoff wrote to Aleksey Senilov:
AS>> I did it once, HLDE/H'L'D'E' ... But obviously not so fast. Only
AS>> for a calculator, or Forth.
VK> Found a library of arithmetic procedures for CP/M. Just what is there
VK> no. And 32-bit arithmetic and floating point, etc. etc. Who needs it?
VK> Although it is under M80, Alasm should digest it normally.
Please! ;)
All the best! /*Gandalf*/ *Grey* was with you. ||*()*||