Reply 20 of 45, by FAMICOMASTER
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wrote:I'm assuming that when you filled both banks with 256kbit chips to make 1MB, you set the motherboard jumpers accordingly.
Initially, I pulled both the AST and the BocaRAM cards and pulled all of the 1M chips from the board. I pulled both banks from the BocaRAM (18x256K chips). I inserted them into Bank 0 of the motherboard. This makes 512KB of RAM. I used TH99 and set the two jumpers. The BIOS displayed 512KB correctly.
I pulled one row from the AST (18x256K chips) and inserted them into Bank 1 of the motherboard. This should make 1MB of RAM. I used TH99 again and set the two jumpers for 1MB. The BIOS displayed 512KB. Changing the base memory in Setup from 512 to 640 gave a memory size error.
If that is the case, and it still shows 512kb, to me it sounds like the problem is CMOS related. Are you able to take any pictures of your BIOS setup screens?
Yeah, I'm starting to think that as well. I'll take pictures when I get home around 4:30 of startup, setup, and extended setup.
I assume you have a CMOS battery plugged in too, right?
Of course. A jumper on the board changes between alkaline and lithium, mine is set for lithium and I have a lithium cell attached. Originally it had an alkaline battery that was completely dead. This one seems to keep the time (even though it can be a bit fast / slow)