I have a build-it-yourself system that I got from Tiger Direct last year (233 mhz Pentium MMX, 32 mb, all the usual peripherals). The motherboard is a PA-2011 from a Taiwan company called FIC. The MB has 2 DIMM slots and 4 72 pin SIMM slots. I bought the system with a single 32 mb SDRAM DIMM, which works fine. I want to add memory to the system, which leads to the question:
The MB manual shows a lot of RAM configurations. For DIMMs, the only one they list with both slots used is two 64 mb units for 128mb. For lower amounts, they show only a single 8, 16, 32, or 64 mb DIMM. For larger amounts, they only show 4-SIMM configurations for 4X64 mb and 4X 128 mb.
There is a cryptic note that "SIMMs and DIMMs in bank 0 and bank 1 can be installed in many combinations. Some of them are listed in the following table." This leads me to believe that I might be able to add a second 32 mb DIMM, or possibly two 128 mb DIMMs, but I don't know how to find out other than spending nontrivial money and sticking them in there to find out.
Tiger Direct has a tech support hotline that allegedly handles these kinds of questions, but they never answer it; all I get is hours and hours of "your call will be handled by the next available...". The MB manufacturer has a web site, but all that is available there is a pdf file of the manual I already have. They have a mailto: on the page for inquiries, and I sent them a query, but they never answered it.
So, Experts, is there any way to know what configurations are legal? Is there any way that anyone has found to get one of these vendors to respond to customer inquiries?
(PS: I am a EE and totally fearless about following traces on PC boards or whatever it might take to sleuth this out if that is the only option.)