Re: How to properly add 80287 NPU
Posted on 2021-09-16, 01:23
The only reason 287XL is only rated at 12.5MHz is because intel never made 286s faster than 12.5MHz.
Re: How to properly add 80287 NPU
Posted on 2021-09-14, 15:33
Try cpu world. You might get a price lower than 25. In my opinion 287xl is worth your trouble if you want an fpu.
Re: Computrend Systems Contaq-486 Motherboard
Posted on 2021-09-14, 05:50
Where did you find the MR BIOS image? Was it from here: How about a MR-BIOS ROM file repository? ?
Re: 486DLC/TI486SXL interposer board for cache coherency
Posted on 2021-09-14, 05:44
Cyrix had a kit that came with one of these too. It was called the 486DRu. The CPU was a regular DLC-40, but their interposer added clock doubling circuitry in addition to the cache coherency. I guess since you already powered yours on, it probably doesn't clock double since I assume you had your …
Re: 286 "CHIPS" mainboard with missing parts...
Posted on 2021-09-14, 05:37
Did you try powering it on? Sometimes the chips that go in the empty sockets aren't needed.
Re: How to properly add 80287 NPU
Posted on 2021-09-14, 05:35
Cyrix and IIT are good choices too if you can find them. The 80287XL is way easier to find and probably cheaper too. The original i80287 is only made up to 10MHZ and NMOS (very hot), so avoid those. AMD is probably not worth bothering with either as they are normally only found as 10MHz parts.
Re: Win98SE + P4 Build
Posted on 2021-09-14, 05:21
Most of the games you have listed are for DOS. You'd better go with a Socket7 build instead. You can always build a second more powerful system for the few 3D games on your list.
Re: Old BIOS modding tools?
Posted on 2021-09-13, 14:01
Except for 808x and 80286, I am not that familiar with the Phoenix BIOS. Can v2.0.18E edit 486 BIOSes?
Re: Bought ViewSonic monitor - image too wide
Posted on 2021-09-11, 12:44
Viewsonic monitors were very nice when new, but at least the ones from the late 90s didn't seem to last very long. I knew a whole bunch of people that had them, including myself and they usually only lasted about 3 years with casual use. Maybe they had a bunch of those leaky capacitors in them.
Re: Need motherboard for InWin A500 case ?
Posted on 2021-09-11, 12:36
I really liked those Powerman PSUs. They seemed very similar to the old FSP PSUs, though I don't think I ever seen a 300W one (most I seen are the 235W and 250W varieties). I am fairly certain that the Powerman that came in my H500 was a 300W version. Sadly I think it was lost during my big move. …
Re: Need motherboard for InWin A500 case ?
Posted on 2021-09-11, 02:56
I recommend an i820 Camino motherboard with RAMBUST, a Pentium III 1133 (not the re-issue, the original coppermine version), an IBM Deathstar 75GXP (the more platters the better), and a Bitchin' Fast 3D. Only use power supplies usingthe finest Taiwanese capacitors made between 1999~2006.
Re: This slocket adapter allows 3.5V to be sent to the processor
Posted on 2021-09-11, 01:21
Stick a P133 on there and see what happens.
Re: Upgrade Path for P54VL-PCI Socket 5 Board
Posted on 2021-09-11, 00:39
Huh, go figure. I haven't seen too many EISA Pentium boards anyway. It seems like there's more 486 ones out there, and the SiS chipset on the NICE Super VL/EISA is more than fast enough for some fun EISA action. I did see a dual Socket 5 EISA board a while back on eBay, but the price hurt to look …
Re: GA-486SA: RARE EISA + VLB, or proprietary local bus slots?
Posted on 2021-09-11, 00:30
That would be great, thanks!
Re: The late 1997 - early 1998 build I never had. Until now?
Posted on 2021-09-10, 04:53
For me the key to buying and upgrading is to invest in a hardware platform once it's fairly mature and the bugs are ironed out. So for the 486 that would have been late 92/early 93 when VLB came out...and for the Pentium when Triton 430FX boards came out. Those platforms gave a lot of headroom for …
Re: Need motherboard for InWin A500 case ?
Posted on 2021-09-10, 01:30
WTF. Most of us here need Inwin A500s for our motherboards, but here you are needing a motherboard for your Inwin A500.
Re: Upgrade Path for P54VL-PCI Socket 5 Board
Posted on 2021-09-09, 17:11
It’s funny you mention that. I was looking around and seem to find that these are the fastest Socket 5-compatible overdrives. Unfortunately, it seems like there are few out there. Even the Pentium OverDrive with MMX seems tougher to find than it should be; I find this confusing, as presumably many …
Re: Upgrade Path for P54VL-PCI Socket 5 Board
Posted on 2021-09-09, 15:22
In theory the best upgrade option for these boards is an Evergreen spectra-400, with a K6-III+ instead of K6-2. Too bad my VLB/EISA Pentium setup (OPTi chipset) doesn't accept anything but 80501, 80502 and overdrive CPUs. VLB Pentiums are indeed really cool.
Re: Market value for popular or rare classic computer hardware
Posted on 2021-09-09, 15:01
Sometimes I still want to believe my 486 could be faster than a Pentium if only I had the right upgrades...
Re: CT2290 for 65$, worth it ?
Posted on 2021-09-07, 04:32
There are many ways of getting SB16s for almost free, but it requires patience. The ways of doing it are too numerous to list. I've been collecting PC parts for 25 years, and even recently I can still get the things I want for reasonable prices...a lot of it's from American eBay too. There was a …
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