Identify Cyrix V7SJ2848AP

Posted on 2023-12-03, 12:18

by

by Deano

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have just got a Cyrix CPU with a glued on fan/heatsink. Trying to figure out what the processor is from the code on the bottom. Bottom has (C)(M) 1995-1997 Cyrix VV7SJ2848AR It came on a Delhi-III motherboard. I can't know the settings are correct but this is how it came. The CoreVCC dip switches …

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Re: 3x P8/P9 Motherboard Connector

Posted on 2023-12-03, 08:16

by

by Deano

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The extra plug is the LPX 3.3v power plug. It appeared just before ATX which incorporated 3.3v along with soft on. You will need to bring out the 3.3v line from the ATX side into the 3.3v header. That board is LPX, there were a standard desktop form factor with a riser.

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Re: Bought these (retro) hardware today

Posted on 2023-12-03, 08:09

by

by Deano

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just brought on EBAY, a Pentium Pro 200Mhz 256KB cache with fan for 75EUR which is the final part needed for my PPro LPX build. Once it working will probably get a Voodoo for it. Also brought a bunch of big box PC games as my birthday/Christmas present to play over the holidays. Also a new PSVITA …

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Re: please take it upon yourself to list your oldest computers

Posted on 2023-12-01, 13:55

by

by Deano

in Milliways

in Milliways

The oldest not in storage, is a Pravetz 8m about 83-84 and a IBM/XT clone (not sure the age yet). I have a ZX81 in storage, think that is probably the oldest (81-82)

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Re: high speed vanilla pc/xt clones

Posted on 2023-11-29, 21:03

by

by Deano

in Milliways

in Milliways

It wouldn't be 100% IBM compatible if it didn't run optionally at 4.77mhz. If you throw that out then you get single frequency machines using 8088 cpus at various clocks. From as low as 3.5Mhz (Sanyo 1000??) upto 10Mhz. They however were DOS compatible but not PC, as frequency matching was the easy …

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Re: 3D accelerated console games with software only PC version

Posted on 2023-11-29, 19:12

by

by Deano

in Console & Arcade Emulation

in Console & Arcade Emulation

I think X-COM might count on a technicality, I can't imagine the geosphere is rendered in software on the PS1. I wasn't involved with it, so not sure. I'll try and remember to ask Julian if he knows or remembers.

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Re: high speed vanilla pc/xt clones

Posted on 2023-11-29, 19:07

by

by Deano

in Milliways

in Milliways

Upto 10Mhz for sure, 8Mhz being very common and where the turbo button comes from. Turbo will reduce the clock down to 4.77Mhz exactly matching the IBM PC and XT. Mine is an 8Mhz even has the rom slots for Basic (though didn't come with them)

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Re: DOS Background music player (OPL)

Posted on 2023-11-27, 16:45

by

by Deano

in Marvin \ Sound

in Marvin \ Sound

OK, found it... "The Soundtracks folder contains a the SONG.EXE TSR that allows with the help of the Voyetra Media Player to play music in the background, incl. playlist support." https://www.vogons.org/viewtopic.php?t=36474 Don't suppose anyone archived aztec ftp site, doesn't appear to be valid …

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DOS Background music player (OPL)

Posted on 2023-11-27, 12:07

by

by Deano

in Marvin \ Sound

in Marvin \ Sound

Does anybody know if there is a program that can play a list of OPL music in the background whilst doing non game stuff in DOS? Ideally a small, fairly fast TSR that just takes a list of music files (Ideally OPL2 or 3 based) and plays them in a loop whilst doing things like programming on a DOS …

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Re: Trying to fix a faulty DTK Pim-Turbo "8MHz Turbo Board" Rev-5 with Siemens SAB8088-2-P 8088 CPU + 640KB RAM

Posted on 2023-11-26, 11:52

by

by Deano

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Deano wrote on 2023-11-23, 14:23: I have this exact same board and my T48 eprom programmer arrived today, so a good first use will be to read the ROMS at the week end and post them up somewhere. I will put it on retroweb or archive.org but for now here it is. Love how the quick photo snap is 80x …

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Re: Trying to fix a faulty DTK Pim-Turbo "8MHz Turbo Board" Rev-5 with Siemens SAB8088-2-P 8088 CPU + 640KB RAM

Posted on 2023-11-23, 14:23

by

by Deano

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have this exact same board and my T48 eprom programmer arrived today, so a good first use will be to read the ROMS at the week end and post them up somewhere.

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Re: 3D games you would like to see in high resolution

Posted on 2023-11-23, 14:16

by

by Deano

in Milliways

in Milliways

Yes I know YMMV is what I meant. You may like it or not, its purely an personal choice. SVG weren't invented back then, vector formats had many many issues at the time. Whilst some games of course did use them (Flashback, Flash games and even some early graphical text adventures), its not a format …

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Re: 3D games you would like to see in high resolution

Posted on 2023-11-23, 12:07

by

by Deano

in Milliways

in Milliways

AI upscalers on the original sprites sheets can help with higher res ports (used on some consoles games). It works fairly well but not sure I like it personally but if you want to have 'higher' res sprites, its one possibility. As with all remakes its putting data that wasn't generated by the …

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Re: Can 286 motherboards only have 1 ISA

Posted on 2023-11-22, 10:49

by

by Deano

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'd expect the holes to be filled if it was shipped without those slots. I think due to the wave soldering used back then but not sure? Here is a picture of my 286 which has only 8 bit slots in 2 places, even though it could support 16 bit. The 16 bit segments have closed holes as they were never …

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Re: VCS - A capture utility for certain Datapath capture cards

Posted on 2023-11-21, 07:43

by

by Deano

in Release Announcements

in Release Announcements

Have it working now, all compiles clean with Ubuntu 20.04, but it still crashed at startup. Little bit of debugging and figured it out, patch incoming this evening or maybe tomorrow (its just one line, do you prefer here or github PR?). It looks like a clean install with no aliases crashes due to …

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Re: VCS - A capture utility for certain Datapath capture cards

Posted on 2023-11-19, 06:21

by

by Deano

in Release Announcements

in Release Announcements

What distro is known to work for VCS? I get a segmentation fault with VCS but suspect its my slightly weird ubuntu setup, so going to nuke it and install a more standard setup. I think I want kernel 5.15 (I did patch the datapath driver to compile on newer kernels but maybe thats whats problematic, …

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Re: Games that modulate alphatests

Posted on 2023-11-19, 06:04

by

by Deano

in Marvin \ Video

in Marvin \ Video

Very interesting, i'd assume it wasn't working because of the reflections potentially doing depth conflicts [/quote] IIRC We had alpha in the texture and then used vertex alpha to add some variation as the trail moved. We use alpha test to cut the edge completely for performance. Some of the …

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Re: Games that modulate alphatests

Posted on 2023-11-17, 15:11

by

by Deano

in Marvin \ Video

in Marvin \ Video

Modulating the alpha was fairly hit and miss on a variety of earlier cards, so wasn't used a lot. I specifically remember the RIVA128 dropped back to SW (in D3D which was explicitly not allowed) if you used alpha texture and vertex alpha at the same time, was an interesting debugging session to …

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Re: What game are you playing now?

Posted on 2023-11-15, 12:07

by

by Deano

in Milliways

in Milliways

SpooferJahk wrote on 2013-05-26, 09:58: Silent Hill 2 (The almighty PC port, got it as a present for myself since it was my birthday recently) Good choice! (I may be a little biased though 😁)

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Re: PP200 1MB Cache on AP440FX board?

Posted on 2023-11-15, 06:16

by

by Deano

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Okay thanks everyone, I'll think i'll go for a 256/512KB at least to start with. At least its possible to get ones with coolers whereas all the 1MB i've seen don't come with coolers and buying the cooler on its own is harder than the CPU in this part of the world!

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