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1:58 PM
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.
 
2:35 PM
You neglected to say how many bits. In any event, I am not aware of any.
@Cosinux
 
 
7 hours later…
9:54 PM
@Cosinux You could make one out of an PROM, for example.
For up to 8-bit inputs, at least.
For example:
 
 
2 hours later…
11:32 PM
@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.
 

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