|
Processor |
Intel i486DX2 |
|
Processor Speed |
66MHz |
|
Chip Set |
Œ¾–À |
|
Max. Onboard DRAM |
40MB(4MB onboard + 2 SIMMs[32MB FPM + 4MB FPM]) |
|
Cache |
None |
|
BIOS |
Toshiba? |
|
Dimensions |
Unknown(Mini-AT....?) |
|
I/O Options |
keyboard port, ps/2 mouse port |
|
NPU Options |
None....but it's OverDrive Ready. |
When I bought this, I was fascinated the high performance of PC-AT, So I thought "This has i486DX2-66MHz....that's ok.". i486DX-2/66MHz had been the most high performance processor for a long time on those days.
But now I see this mainboard, there is a curious PGA socket besides the i486DX2 printed like this...."486DLC"
Moreever, when I remove CPU from the blue ZIF-socket, there are glittering charactors "OverDrive ready"....
I think it may be built with cheap mainboard or devices for x86 conpatible proccesors. That may be the reason why that system sometimes suddenly works slow just like it is on "non-turbo mode(L1cache disable mode)".
It also has the weak point that only 4MB of onboardRAM use 1bank and it can't be installed 2 32MB of 72-pin SIMM of double bank, although the mainboard has 2 sockets for 72-pin SIMM.
It costs 250,000yen with 14inchesCRT....it may be all right because I was satisfied about it.
This mainboard was made before Super I/O chips from SMC, WINBOND and so on were released. So no I/F for I/O device was available.
That's "conpatible". That's a "motherboard". There are no boards like this today....