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Re: Voodoo 1 with a 16-bit ISA VGA card? Dolch LPAC-486.

Posted on 2021-06-17, 11:36

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well that's what I get for writing posts at midnight, I completely forgot about the passthrough - problem solved then, thanks guys. :P I might see if I can get a friend to help me figure out how the ISA card is driving the original LCD, it may be simpler than it looks. It doesn't get power from the …

Voodoo 1 with a 16-bit ISA VGA card? Dolch LPAC-486.

Posted on 2021-06-16, 14:16

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hey guys, I've got a Dolch LPAC-486 portable PC with a corroded original motherboard that I might not be able to repair, so I'm thinking of putting a spare Pentium 166MHz board into it instead along with a Voodoo 1. The only problem is that the LCD requires the use of a specific VGA card (connects …

Re: Upgrading a 386DX-20 CPU? - IBM PS/55 Type 5551-T1B (Japanese PS/2 MCA machine)

Posted on 2020-12-07, 11:00

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Are you sure a DRx2 25/50 or 33/66 will work? The board's clockspeed is 20MHz and can't be changed with jumpers, it's fixed. I've never tried a CPU in a board set at the wrong clockspeed before so I just want to confirm that it works before buying one of these. If not, I just realised there's a DRx2 …

Re: Upgrading a 386DX-20 CPU? - IBM PS/55 Type 5551-T1B (Japanese PS/2 MCA machine)

Posted on 2020-12-07, 10:25

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Anonymous Coward wrote on 2020-12-07, 08:22: Use cpu-world. Lots of sellers have drx2s. I just took a look and couldn't find any, unless the search function isn't great. I might post a WTB thread there and on Amibay.

Re: Upgrading a 386DX-20 CPU? - IBM PS/55 Type 5551-T1B (Japanese PS/2 MCA machine)

Posted on 2020-12-07, 08:09

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ti486SXL has usually compatibility problems with some motherboards. DLC and DRx2 have good compatibility. Also Ti486SXL is need to be PGA132 (386DX pinout) and not PGA168 (486 pinout). The compatibility of the dlc and sxl should be practically identical, unless you have evidence to prove otherwise. …

Re: Upgrading a 386DX-20 CPU? - IBM PS/55 Type 5551-T1B (Japanese PS/2 MCA machine)

Posted on 2020-12-07, 04:39

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So from what I understand, your system is basically a PS/2 model 70 for the Japanese market. It sounds like 25MHz is going to be the best case scenario for your planar, but even that might be pushing too hard as it was designed for operation at 20MHz. Overclocking is worth a shot, but at the very …

Upgrading a 386DX-20 CPU? - IBM PS/55 Type 5551-T1B (Japanese PS/2 MCA machine)

Posted on 2020-12-05, 13:57

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hey guys, I've got an IBM PS/55 Type 5551-T1B that I recently restored and I'd like to upgrade it to a 486 of some kind. It has a 386DX-20 CPU so I was thinking about putting a Cyrix 486DRX2 66MHz in it, but will it be able to reach the full 66MHz or will it only run at 40MHz? There's a 40MHz …

Re: Create an image of an IBM PS/55 (PS/2) hard drive?

Posted on 2020-12-05, 11:31

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There is an app called ImageDisk 1.18 that is open source and can be downloaded from www.classiccmp.org/dunfield/img/index.htm The readme file only mentions floppies, so it's not clear whether it can backup hard drives, but I imagine it can as it works on any file system. What size the hard disk is …

Create an image of an IBM PS/55 (PS/2) hard drive?

Posted on 2020-12-02, 08:12

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hey all, I just finished replacing the capacitors in my IBM PS/55 Type 5551 and its hard drive, and to my surprise everything is working perfectly. The drive has an unknown version of Japanese DOS on it that doesn't want to boot for whatever reason, but it's accessible when booting PC-DOS from a …

Re: Win98SE Rig - Would a SiS 6326 + 8MB Voodoo 2 SLI be okay?

Posted on 2020-04-17, 04:39

in Marvin \ Video

in Marvin \ Video

For a DOS/Win98 build that thing sounds good - Voodoos for 3D and Audigy 2 for EAX under Windows. CT2230 is one of the better SB16 cards, so that would make sense for both OPL3 and general DOS SB16. Only issue is your SC-55 - that SB16 is full of MIDI bugs. For that the AWE64 would be better. MIDI …

Shortest Sound Blaster (or compatible) card with real OPL3?

Posted on 2020-04-15, 04:43

in Marvin \ Sound

in Marvin \ Sound

Hey all, I've got an absolutely tiny Buffalo BPC-MS41DS 5x86 PC that I'd like to put a sound card in. It has a single 16-bit ISA slot and the case ends 1 centimetre (ish) after the end of the slot, so I need a card that doesn't hang over the edge. The CT2770 is the shortest OPL3 card I could find …

Re: Win98SE Rig - Would a SiS 6326 + 8MB Voodoo 2 SLI be okay?

Posted on 2020-04-15, 04:21

in Marvin \ Video

in Marvin \ Video

I ended up switching to a different motherboard after scoring a second 8MB Voodoo 2, this board has a 600MHz Pentium 3 which seems better suited to a 16MB SLI setup. Here are the cards I settled on: - S3 PCI (can't remember exactly what the card is) - 2 x Diamond Monster 3D II - 8MB 3DFX Voodoo 2s - …

Re: Diamond Edge 3D 3240 - where to find compatible games?

Posted on 2020-03-22, 03:08

in Marvin \ Video

in Marvin \ Video

Great find :D There's a handy list of all known compatible NV1 games here (including some unreleased ones): https://www.vogons.org/viewtopic.php?t=33483 Most games patched for the NV1 came bundled with the card, some retail releases like Virtua Cop and Toshinden should have support right out of the …

Diamond Edge 3D 3240 - where to find compatible games?

Posted on 2020-03-21, 06:07

in Marvin \ Video

in Marvin \ Video

https://cdn.discordapp.com/attachments/444418962156027904/690573755151286322/image0.jpg Hey all, I recently got a loose Diamond Edge 3240 card and was wondering where I could find compatible games for it. I'd really like to play Daytona USA but can't find a download for a version that specifically …

Re: Win98SE Rig - Would a SiS 6326 + 8MB Voodoo 2 SLI be okay?

Posted on 2019-10-31, 13:47

in Marvin \ Video

in Marvin \ Video

I guess the SEGA2. The scaling of voodoo 2 sli on that platform won't be particularly amazing. For the games that won't run at 60fps on a single voodoo2, you are likely to run into a CPU bottleneck anyway. Half-life, unreal, quake III, ect are going to be CPU bound at around 25-45 fps, which a …

Win98SE Rig - Would a SiS 6326 + 8MB Voodoo 2 SLI be okay?

Posted on 2019-10-30, 14:31

in Marvin \ Video

in Marvin \ Video

Hey all, I'm in the process of building a late 90's rig for the first time (AMD K6-2 550) and have hit a snag: I'm running out of expansion slots. The motherboard I'm using is a freebie Jetway 530BF that has 3 PCI and 2 ISA slots, however one of the PCI and ISA slots share the same bracket. This …

Re: Cyrix 5x86-133 - "DIVIDE OVERFLOW" error on boot.

Posted on 2019-10-29, 07:40

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you have the desire to upgrade your system using an Am5x86 or Cx5x86, then you'll need an interposer to drop the voltage down to ~3.45 V. Keep in mind that Write-back L1 cache may not work and your L1 cache may only work in write-through mode. If you don't want to bother with an interposer, but …

Re: Cyrix 5x86-133 - "DIVIDE OVERFLOW" error on boot.

Posted on 2019-10-24, 04:30

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

feipoa wrote: I suspect the dye caps were stamped, then installed first. Then the chips were qualified. I see. So should I bother getting an interposer?

Re: Cyrix 5x86-133 - "DIVIDE OVERFLOW" error on boot.

Posted on 2019-10-23, 05:12

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You cannot look at that list and assume that all G5FB607B are 5x86-133 chips. Many cx5x86-133 chips which did not qualify at 133 MHz were marked for 100 or 120 MHz operation. That list represents only what a few individuals have encountered and is not exhaustive. For how long had you run the Cyrix …

Re: Cyrix 5x86-133 - "DIVIDE OVERFLOW" error on boot.

Posted on 2019-10-23, 03:08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Caluser2000 wrote: Just depends what your intentions are. To test the CPU and pass it on to someone else, really. I don't need a 5x86 in this system.

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