So after been playing around with the system and actually got MS-DOS 6.22 installed, I have reached the point where I started to do some benchmarking.
This will never be a speed demon, that I know - it was more intended to be something to relive some glorious 486 memories. I consider this system closer to a 486 than a Pentium really, especially with the VLB based chipset.
Nevertheless I simply cannot leave things in a non-optimal configuration (yes I probably have some undiagnosed letter combination) 😄
So I have been playing around with as aggressive chipset settings and memory settings possible in BIOS.
But the one setting I recon could really speed things up is "grayed out" in the BIOS settings , namely setting "External Cache Policy" to "Write-Back". It defaults to "Write-Through". I have been trying all kinds of jumpers settings but no change.
So my question to you, does this make any significant impact in terms of performance? And also, is this somehow related to the SRAM + TAG modules themselves? Sounds far fetched...
Posting a screenshot of my current settings:
20220318_181935.jpg
"Addr. Delay For Page Hit" does not make any difference what so ever, just happened to be set to "Enabled" as part of trial and error when this picture was taken - now reverted to "Disabled".
Setting "DRAM Post Write" to "Enabled" renders the system unstable.
"Cache Write Burst Mode" and "Cache Read Burst Mode" are set at the most aggressive setting I can obtain and still have a stable running system.