Reply 160 of 164, by Robin4
MMaximus wrote on 2019-06-04, 17:18:
So... I'm having RAM issues while trying to set up another Suntac board. This particular board supports SIPP memory, but since I […]
So... I'm having RAM issues while trying to set up another Suntac board. This particular board supports SIPP memory, but since I only have 256kb SIPP modules, I'm trying to make it work with 1Mb SIMM modules in SIMM holders inserted into the SIPP slots.
The DIP switches for memory are set correctly on the mobo and it reports the correct memory size (4Mb). It posts without problem, but when I run a memory test in Checkit, I get lots of errors. I removed the SIMM modules from their holders and put them into a 386 board to test, and Checkit doesn't find any error so I assume the SIMMS are ok.
On the Suntac mobo there are 3 jumpers next to the DIP sockets: RAS, CASL, and CASH. I'm thinking maybe they're set incorrectly and that's why Checkit is finding errors? I've tested the 256kb SIPP modules and the Checkit test runs ok - it only happens with the 1M SIMMs (which are all 9 chip modules).
Maybe its not possible to use the DIP ram and the SIPP modules at the same time.. Could be that you have to use 1 of the time.. Or the timings are set to low (quick) and the memory cant handle those speeds.
~ At least it can do black and white~