need some help with a boat anchor...lol

[danzigrules]

here it is

Thought that someone here would be able to answere my ?


THX

 

[dirtboy]

I used to setup and work on those things. Honestly, I can't remember. I think they took standard memory for the time, I'm not sure. As far as CPU upgrades, I remember some models you could add some kinda processor (math co-proc?) that I always bent the pins on...I think they were all 486's.

 

[office boy]

4 models. ISA, 5.25 bay. Sound, MIDI. 30-pin SIMMs.

Model 30 386SLC-25 4mb solder-in, 2-banks 2-sockets each 1or4-mb, max16
Model 35 486SLC2-50 same same same same
Model 40 486SX-25 4mb solder-in, 1-bank all 4-sockets, 1or4-mb, max20
Model 50 486SX-33 same same same same

40 & 50 have on-board SCSI, SVGA capable, upgrade with "ODP" processors. Just reading from the book...

 

[danzigrules]

OK it's the 486sx-25 but there is a socket that looks like a 370, and below that it says upgrade socket.. is that for a tad bit faster cpu? and all the memory slots are full so that mean it has the mega 16 megs in it allready?

thx

 

[Orange Kid]

Most likely the other socket is for a Weitec (sp?) math co-processor.
Haven't seen any of those but have seen it mentioned in some manuals(this was a slightly larger socket if i remember right,or....
if you are lucky it maybe for an upgrade, such as a dx2 or dx4 processor.
Is the CPU soldered to the board? If so i woud guess its an up-grade socket that can be set with jumpers, if the CPU can be removed it is most likely the math co-p. socket.

 

[MGallik]

Here's a bit more stuff you may find a use for. 🙂

 

[danzigrules]

the cpu is soldered on thx for the help

 

[Viztech]

Danzig-

That upgrade socket is probably for a math co-processor, SX33, DX25, DX33, DX2-50, Dx2-66 or possibly a DX4-75 ODP, DX4-100 ODP, Pentium Overdrive Processors at 63 or 83 mhz. Normally there is one jumper that disables the on board CPU when you plug in another. This board undoubtedly is for 5 volt CPUs only, and the ODPs have a built in voltage regulator to reduce the voltage to 3.3? that the faster CPUs need.

I have a Compaq mini tower with a PODP 83 that is in the herd. Not many mobos will truly support that animal. The 486DX2-66 would probably be your best bet for an upgrade, as they are cheap and plentiful. The 486 ODP (Overdrive Processors) are a little hard to come by, but will probably work perfectly. I have a 486DX4-100 ODP in my collection that I paid $45 for about 3 years ago. It sure jazzed up that Packard Bell DX2-50!

Did you want to use it to crack RC5?

viz