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Fastest 8-bit microprocessor for multiply-accumulate?

Maybe you could have a look at the Motorola 68008; its architecture and machine language had much better reputation than Intel's ones in the 80s. Another point is that it runs at higher frequency than ...
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1 vote

Fastest 8-bit microprocessor for multiply-accumulate?

I grew up with the Z80 on CP/M systems but occasionally used the 6502 on Apple IIs and BBC micros. Over time I generally found the Z80 extensions to the 8080 instruction set saved a few bytes but ...
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2 votes

Fastest 8-bit microprocessor for multiply-accumulate?

My first thought was a 6809 as it is a true 8-bit microprocessor but you want "best performance" as measured in wall-clock time. A better choice would be a 68008 as it has 32-bit registers ...
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1 vote

Fastest 8-bit microprocessor for multiply-accumulate?

Not sure about calling an 80486 an 8 bitter even if you can throttle external access to 8 bits. For a 'real' 8051 job the Silabs EFM8 series aren't too shabby. I've run them at 72 MHz and the multiply ...
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1 vote

Fastest 8-bit microprocessor for multiply-accumulate?

You can sure consider a co-processor, e.g. AMD 29516. MPY16 series of multipliers can get you into ~50ns per operation level Compatible multipliers were made by Analog Devices (ADSP1016, 40-50ns at ...
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5 votes

Anyone have the 1975 edition of "An Introduction to Microcomputers, Vol 2"?

Full title is An introduction to microcomputers. Vol. 2. Some real products. Check this WorldCat link. It lists a couple of entries for the 1976 edition. Follow the links on those and enter your ...
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7 votes

Fastest 8-bit microprocessor for multiply-accumulate?

The Motorola 6809 was one of the first (the first?) 8 bit microprocessors with a multiply instruction implemented in hardware. It was even pre 1980, introduced in 1978. One MUL instruction took 11 ...
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7 votes

Fastest 8-bit microprocessor for multiply-accumulate?

I'll suggest the 8051. It's reasonably early (1980) and definitely 8-bit. There are modern derivatives like this claiming speeds of up to 430 MHz and including a 32-bit hardware multiplier, but if you ...
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47 votes
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Fastest 8-bit microprocessor for multiply-accumulate?

And sorry to nerd-snipe this, but of course the ideal candidate for a fast multiply-add is a Digital Signal Processor CPU, and nothing in your requirements says that DSPs are excluded. It will be also ...
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21 votes

Fastest 8-bit microprocessor for multiply-accumulate?

There’s probably another CPU meeting your criteria which beats this, but as a data-point, a number of x86 CPUs fit the bill. One is the 80C188 (introduced in 1987) which was available at frequencies ...
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