32 bit Division without DIV32

[CosMecc]

Hi
I've a problem, I'he to make this math:
(a*b)/c
so a*b because could be a 32 bit number, I've to use DIV32 command, but in may code a couldn't disable the interrupts.

Does any one know a method to make a 32 bit numeber division without DIV32?

Thanks

[Darrel Taylor]

Are you using ON INTERRUPT, or ASM interrupts?

If ASM, you don't need to worry about turning them off.

[CosMecc]

Unfortunately I use ON INTERRUPT

[Darrel Taylor]

Well, if you can't disable the interrupts long enough to do a multiply and divide, then you shouldn't be using ON INTERRUPT. There are many statements that will take even longer.

For Basic Language interrupts that won't interfere with DIV32, and won't wait for PBP, check this out.

DT_INTS-xx
http://www.pbpgroup.com/modules/wfsection/article.php?articleid=19

[CosMecc]

Thanks for this link, it is very interesting.