Reply 20 of 31, by jakethompson1
- Rank
- Oldbie
Robhalfordfan wrote on 2020-08-29, 19:25:would having more cache help in any way other than more ram higher than 32mb
For a constant amount of RAM (under the cacheable limit) the more cache you have, the higher % of the time the CPU can get data from cache instead of RAM (Hit Rate). If what you're getting at is if you have more than minimum cache for all RAM to be cacheable, will the rest be used--yes it will. However, since you're sticking with a 486DX2 and 16-24MB RAM, 256KB external cache is fine. Plenty of systems were sold with 4MB RAM & no cache at all.
Once you get your system up and running, since your bus will be 33MHz, you can play around with cache timing & DRAM wait states to get them as minimal as possible.
Robhalfordfan wrote on 2020-08-29, 19:25:would prob keep it dx2 - 66mhz for a while and use somewhere between 16-25mb ram and use edo ram (as i have loads of sticks)
That it is EDO is important as mentioned earlier; the ATC-1415 is labeled as supporting EDO. Hopefully that works out for you.