4x4 multiplier IC

Thread Starter

assassinelec

Joined Mar 22, 2011
13
hi all,
can someone tell me please how i can build a 4x4 multiplier IC, i don't want to buy it...i want to make it, is there any link or guide can help me with that ? any help would be appreciated.
 

MrChips

Joined Oct 2, 2009
20,880
A 4 x 4 multiply will have 256 possible results with 8-bit result.
All you need is a look-up table of 256 bytes, that is, 8-bit address and 8-bit word size.
There are many 256-byte PROMS available and execution speed would be very fast (10ns or faster).
 

joeyd999

Joined Jun 6, 2011
4,371
For fun, attached is an 8x8 hardware multiplier written in Abel for a PLD. I wrote this back in the mid '90s. Don't ask me how it works. I don't remember. IIRC, it computes partial products and sums them together.
 

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