Dual's RAM surgery.
Hello everyone. I have a computer so aptly named Dual for it's dual pentium pro cpus (200Mhz each) that I wanted to upgrade the ram in. It uses EDO ram, OK, so I ebay for it and buy four 128MB sticks (the computers max is that). I got the ram today, tried to place it in, but the notch a few pins after pin 1 doesn't align with the plastic in the slots. I figured... this was the result of an IBM thing... so I just took a small screw driver and scraped the plasic out. The pins matched, it wasn't that I got the wrong ram type or anything, it was just the notch not aligning. Ok, so I place a stick in by itself and try to boot, doesn't. I think maybe they have to be paired put another one in, nothing. So I try leaving two in there, and putting on of the original sticks in, it boots.
The original ram had ECC and the new stuff doesn't even have parity, so the system configured it all for non parity (which it supported). So I place a third new stick in. So it seems that 420MB is the most I can get currently get. One of the new sticks actually has a pin completely gone.. so that stick probably doesn't even work. So it comes time for me to go past the POST/BIOS and let windows (2000) boot. It does the black screened portion fine, but when it came time to go into the logo portion, it locks up. I tried a few times, no luck. I removed one of the new sticks and placed one of the initial ones back in, so I had two new and two old. Windows booted past the logo portion, then blue screened. I would really like my money to not go to waste as the ram is good to some extent. The bios has been updated to it's newest version.
Anyone have any ideas? I'm pretty much stuck... I'd hate to have to try buying ram again.
The original ram had ECC and the new stuff doesn't even have parity, so the system configured it all for non parity (which it supported). So I place a third new stick in. So it seems that 420MB is the most I can get currently get. One of the new sticks actually has a pin completely gone.. so that stick probably doesn't even work. So it comes time for me to go past the POST/BIOS and let windows (2000) boot. It does the black screened portion fine, but when it came time to go into the logo portion, it locks up. I tried a few times, no luck. I removed one of the new sticks and placed one of the initial ones back in, so I had two new and two old. Windows booted past the logo portion, then blue screened. I would really like my money to not go to waste as the ram is good to some extent. The bios has been updated to it's newest version.
Anyone have any ideas? I'm pretty much stuck... I'd hate to have to try buying ram again.
Comments
That a Photoshop job, or did that board have 3 different RAM slots on it?
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-Q
-Q
The first is the manual itself, the second a listing of all memory types models used.
System Memory
Four dual inline memory module (DIMM) connectors are provided on the system board. The DIMM
connectors are powered by + 3.3 volts. Each DIMM connector is a 168-pin, gold-lead socket. For the pin
assignments, see "System Memory Connectors" on page 30.
The system board supports:
. A maximum of 512 MB (128 MB modules in all four connectors).
. Dynamic random access memory (DRAM) only.
. 64-bit (EDO) and 72-bit (ECC) wide memory modules.
Any configuration of DIMMs is acceptable. Characteristics required by DIMMs include:
. 168-pin, unbuffered +3 V modules only.
. Gold-lead tabs only.
. 60 nanosecond access speeds only.
. Height of no more than 3.81 cm (1.5 in.).
. To enable error-correcting code, all installed memory must be of the ECC type (a combination of ECC and nonparity types is configured as nonparity)
Note: Single inline memory modules (SIMMs) are not supported in the PC 365.
http://www-1.ibm.com/support/docview.ws ... us&lang=en
PC 365
Pentium Pro models
180/200MHz
Type 6589 16MB
32MB
512MB
Maximum 60ns EDO Non parity or Parity or ECC industry standard
According to this... the ram I have is a match. It is EDO, it is 168 pinned, it is gold-lead, it is DRAM DIMMs, it is Non parity, minus the slight notch difference it is detected by the system as useable, it is just that windows doesn't handle it.
-Q