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Re: What ISA cards for an IBM 5150?

Posted on 2022-09-23, 18:20

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This system is gonna be verrry slow haha. But it looks like one heck of a fun build :p How about this upgrade CPU? I think it's the same one you can order for the NuXT board. Would that improve the system's speed? https://www.ebay.com/itm/225065186119 This stuff is far older than I usually mess …

Re: What ISA cards for an IBM 5150?

Posted on 2022-09-23, 17:53

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That multi io card sounds pretty handy! Many of these ems cards were dreadfully slow. That is why they are hoping for a better option. I’m surprised to hear that they think a lowtek 1mb will be better. I’m curious to know the difference between one isa based ram card and another, can someone explain …

Re: Board has L2 Cache Slots but no Option in Bios and Jumpers not there

Posted on 2022-09-23, 17:43

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Uniflash 140 or 1.40 I forget what the version is. That’s what I use it’s dos based. You have to boot without high memory programs

Re: Board has L2 Cache Slots but no Option in Bios and Jumpers not there

Posted on 2022-09-23, 17:37

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Take high res pic of mobo front and back. There may not be any traces to your cache sockets. Dump your bios and upload it. Perhaps someone here can mod it. Also, do I recall that you inserted one backwards? May have fried mobo.

Re: Cyrix/ST/IBM Aiming for the stars!

Posted on 2022-09-23, 17:35

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yeah. No more than 2.4v I’d say. You can of course do more but it probably wouldn’t even help and you risk the chip. Seems like most good binned 2.0/2.2v chips are around 350 on a overclock. My 400gp can do 350 My 300gps are a little less. Maybe 330 so you did good :) There may be a rare unicorn out …

Re: Tillamook 266MHz and working L2 cache?

Posted on 2022-09-23, 06:33

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It sees my mobo cache 😀

Re: What ISA cards for an IBM 5150?

Posted on 2022-09-23, 06:04

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh man, that is limiting! The ram expansion will help! Can you expand the onboard to at least 640 or 1024k? Those expansion cards are sllllllloooowww. Pic of mobo? Have you considered a xt-ide? Plop might be useful. (Cd rom access, if you intend this.) a gotek is also a must these days far as I am …

Re: Tillamook 266MHz and working L2 cache?

Posted on 2022-09-23, 05:15

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh, there is no doubt that that isn’t there haha but cpuz will show my board’s 512k haha It is lying 😁

Re: What is the asus p5a-b bios chip?

Posted on 2022-09-23, 03:01

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Note that some mobos are set to use different chips and are configured on the board for them. Ask for a pic of the donor board and match your revision number. Inspect for board configuration differences They will have to peel their sticker off to show the chip model

Re: Tillamook 266MHz and working L2 cache?

Posted on 2022-09-23, 02:39

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Behold! Filename B6CC86F3-E948-4611-8004-32E5C2D876AD.jpeg File size 380.73 KiB Views 1729 views What should I test first? What questions can I answer about it?

Re: List of open-source PC hardware projects

Posted on 2022-09-23, 02:31

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Btw: OP, I have since condensed my projects into a single post available in my sig.

Re: Cyrix/ST/IBM Aiming for the stars!

Posted on 2022-09-23, 02:27

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Based on that and the chipset, I’m suspecting 64 probably won’t do any better. I noticed a difference between 640 and 384mb on mvp3 but hadn’t tried 256 or 128 much. I’m thinking the threshold lies around 384mb🤔 may also depend on cpu and amount of cache installed. That score is better! 7500s are …

Re: Retro gpu upgrade advice - is it worth it (TNT2 M64)

Posted on 2022-09-22, 22:56

in Marvin \ Video

in Marvin \ Video

Okay, after reviewing your board, I think with some slight modification you may be able to get a k6-3 400mhz (possibly 450 or 500 with undocumented fsb settings) and 128mb of ram on that. The k6-3 will allow the ram to basically all be cached too. Your vrms may be stressed a bit with such a cpu …

Re: Cyrix/ST/IBM Aiming for the stars!

Posted on 2022-09-22, 16:42

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ah, best to mod the 570s anyway. The others are collector’s items and less likely to mod

Re: Retro gpu upgrade advice - is it worth it (TNT2 M64)

Posted on 2022-09-22, 16:33

in Marvin \ Video

in Marvin \ Video

Pentium MMX 233 aiming for the stars! I understand you have a p233 mmx in it now? What motherboard is this? How much ram? Do you have a link to your mobo on ultimate retro/retroweb?

Re: Cyrix/ST/IBM Aiming for the stars!

Posted on 2022-09-22, 16:21

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Which 2+? Did you mod it? If you get a chance I would be curious to see benchmarks of those cards on the cyrix at 350 mhz.

Re: List of open-source PC hardware projects

Posted on 2022-09-22, 15:58

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Amiga 500 USB keyboard adapter with CTRL+AMIGA+AMIGA reset mappable function and LED passthrough. Uses a RP2040 Pi Stamp to provide the interface between the A500 keyboard connector and a HID USB keyboard (not-PS/2). Fits in conjunction with the RGB2HDMI Denise adapter. Tested and working. I …

Re: 512MB Geforce 6200 AGP in Windows 98SE?

Posted on 2022-09-22, 15:56

in Marvin \ Video

in Marvin \ Video

Idk what processor OP has, but 6200 doesn’t work very well on 586 so that’s another thing. Anyway, As posted above. There is now a patch for the memory thing.

Re: DRAM upgrade on PCI graphic cards

Posted on 2022-09-22, 14:13

in Marvin \ Video

in Marvin \ Video

Can it be upgraded to 3 or 5mb?

Re: Cyrix/ST/IBM Aiming for the stars!

Posted on 2022-09-22, 14:09

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

350mhz

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