Hi. I wonder if anyone here is aware of any arithmetic binary divider DIP. I've been hinted that such a DIP might not exist as it might be impractical. Searching on Google shows results for various clock dividers, but I need to perform integer division.

You neglected to say how many bits. In any event, I am not aware of any.

@Cosinux

@Cosinux You could make one out of an PROM, for example.

For example:

newark.com/microchip/at27c512r-70pu/…

@Marla Well, my goal was to perform 8 bit * 8 bit multiplication, either by finding a single chip that does it, or chain a few together if that was possible.

@Cosinux Multiplication is easier than division. If you want multiplication, don't start by locating a divider chip.

@ThePhoton Using an EPROM sounds like a crazy idea, but it should work. I wonder if it's faster than a hardware implementation.

Sorry, yeah, I was actually meaning to implement both the multiplication and division, but I thought if there was one out there for division, then there should be one for multiplication too.

@Cosinux That depends on technology details. For this kind of complex calculation, a ROM is probably faster.

Given similar technology used for the ROM vs pile-of-gates.

If you can actually make a mask-programmed ROM, it will almost certainly be faster.

@Cosinux The trick with multiplication is that the output has more bits than the input. For example if you multiply two 8-bit unsigned numbers, you could get a 16-bit result.

But that just needs two 64Kx8 PROMs instead of one.

Or you build something like a 4-bit multiplier (with 8-bit output) and combine outputs like when you do pencil-and-paper multiplication.

Nevermind, trying to line up ascii on here isn't working well

Yeah, I get that. Thanks for your help. I think two EPROMS could be a good investment to reduce complexity.