Author: Lyndon Amsdon (host62-6-126-194.webport.bt.net)
Date: 01-05-2003 20:34
The SRAM chips are 32kbytes, 8bit wide. Mine are 25ns, and I am not sure if you can take that direct as the speed of DSP (1/25ns). I don't know how DSP accesses SRAM, is it one cycle?
You need to be good at SMD soldering, they look about 0.8mm pitch. Can be done by hand sure with the right tools.
CPU/BUS, well they're the same speed. No more than 25MHz, any higher the gains are so little for the decrease in reliability on DMA intensive work. You need a good RAM card that doesn't load the bus. Or 4MB is fine.
FPU, I have FN33 which I was going to have a go at speeding but don't use it that often. I tried running it faster and Quake testing it, but it hung on loading Quake. I think that may be something to do with Quake, I never tried other programs.
Some programs required the DSP:CPU ratio as 2:1
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