Re: Ehy guys, what is this? AMD 386 40MHZ, Cyrix co-processor, 8MB RAM...

Posted on 2022-09-01, 06:54

by

by zyga64

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

[...] Your board is a Chicony CH-386-33H/40H. It has an entry in The Retro Web at https://theretroweb.com/motherboards/s/chicony-ch-386-33-40h-l [...] I'd rather say that this is Chicony CH-386-33/40H(L) https://theretroweb.com/motherboards/s/chicony-ch-386-33-40h-l-,-ch-486dlc-33-40h- It has UMC …

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Re: 486 DX4 100 Help needed with setup.

Posted on 2022-08-30, 08:08

by

by zyga64

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Is CPU Voltage correctly set up ? (DX4 needs 3.3V) Try to play with cache settings (WB vs WT).

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Re: Intel CPU sweet spot for DOS games and pre-1999 Windows games on Socket 370

Posted on 2022-08-26, 08:38

by

by zyga64

in Windows

in Windows

joeguy3121 wrote on 2022-08-26, 08:23: What's this FSB you speak of? Front Side Bus. For your Pentium 3 it is 133MHz. Cpu speed is FSB (133) x Multiplier (5.5). Multiplier is fixed. 5.5 x 66.6 is ~ 366 MHz

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Re: Intel CPU sweet spot for DOS games and pre-1999 Windows games on Socket 370

Posted on 2022-08-26, 08:00

by

by zyga64

in Windows

in Windows

bloodem wrote on 2022-08-26, 07:56: zyga64 wrote on 2022-08-26, 07:54: You can set FSB to 66Mhz in BIOS and your Pentium !!! 733 will be 366MHz 😀 It won't make a difference for speed sensitive DOS games. 😀 Original Celeron Medocino will not be suitable here either. ...but he can still try to …

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Re: Intel CPU sweet spot for DOS games and pre-1999 Windows games on Socket 370

Posted on 2022-08-26, 07:54

by

by zyga64

in Windows

in Windows

You can set FSB to 66Mhz in BIOS and your Pentium !!! 733 will be 366MHz 😀

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Re: HP T5720 and Sound Blaster Live!

Posted on 2022-08-19, 12:35

by

by zyga64

in Marvin \ Sound

in Marvin \ Sound

Maybe try Fastdoom ? If your problem is related to the VGA card, you should be able to run the game in any of the available modes (mode 13h, VBE 2.0, etc...)

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Re: HP T5720 and Sound Blaster Live!

Posted on 2022-08-19, 10:44

by

by zyga64

in Marvin \ Sound

in Marvin \ Sound

You will probably get better compatibility with soundcards based on YMF7x4 or ALS4000 chipset. https://vsynchmame.mameworld.info/ - SiS chipsets are mentioned here as compatible.

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Re: 3Com 3c515 TriROM BootROM

Posted on 2022-08-19, 09:05

by

by zyga64

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It seems that source code for rom-o-matic is available on github https://github.com/etherboot/gpxe/tree/master … rib/rom-o-matic You may try to host it locally. Or compile gPXE images from source: https://github.com/etherboot/gpxe

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Re: SMC Ethercard Elite16 8216t Packet driver?

Posted on 2022-08-11, 20:12

by

by zyga64

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have similar card (combo with BNC and AUI connectors in addition to 8P8C for twisted pair ethernet) which is working fine in my 486DX33 rig. I'm using this driver (in attachment).

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Re: Ati Radeon Mobility 7500 keeps showing black screen for a moment, no glitching.

Posted on 2022-08-11, 12:00

by

by zyga64

in Marvin \ Video

in Marvin \ Video

Maybe try this one: http://ftp.ext.hp.com/pub/softpaq/sp27501-28000/sp27665.exe However, this is very unusual to have mobile chip on discrete card. BTW. CPU is probably Sempron not Celeron 😀

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Re: Avance logic al s100 - pcm works fine but fm sound barely audible and distorted

Posted on 2022-08-05, 05:31

by

by zyga64

in Marvin \ Sound

in Marvin \ Sound

On my ALS200 card that's got a DIP20 chip connecting up to the OPL3's traces , it's actually called just the "LS245". Other markings on it are "7B146M1 748". The first post goes into impressive detail, covering what pins were removed to make it work and has some other good examples of how the OPL3 …

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Re: Avance logic al s100 - pcm works fine but fm sound barely audible and distorted

Posted on 2022-08-04, 07:21

by

by zyga64

in Marvin \ Sound

in Marvin \ Sound

I know this probably doesnt help you, but the ALS100+ version has jumpers to select line vs speaker level output which cuts down on the noise a bit, or at least mine does. Word of warning with ALS100+ cards though: the "74LS245" chip there isn't a regular 74LS245 like on the ALS100 cards, it's …

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Re: Is the Adaptec AHA-2940UW a good choice for DOS/Win9x SCSI?

Posted on 2022-07-31, 12:36

by

by zyga64

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I don't know, so I will comment 😀 Maybe 2940U2W (80MB/s) will be better choice ? I remember that even AHA-29160 (64bit PCI) works just fine in 32bit slot (however AFAIR it was later machine - P4 or Core2 based, I'm not sure about Pentium Pro).

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Re: Avance logic al s100 - pcm works fine but fm sound barely audible and distorted

Posted on 2022-07-30, 12:21

by

by zyga64

in Marvin \ Sound

in Marvin \ Sound

I had exactly the same behavior. If you have the same or similiar card to mine, just replace 74LS245 chip near LS262 chip (actually this one is YMF262 clone). I replaced it with 74HCT245 (because I just didn't had an LS245 nearby) and FM started to sound like it should. Two 74LS245 chips below which …

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Re: Trident TGUI9440 ROM type

Posted on 2022-07-09, 18:09

by

by zyga64

in Marvin \ Video

in Marvin \ Video

If its size is 32kB then 27(c)256 eprom or 28256 eeprom or 29c256 flash should be ok. AFAIK they are pin compatible

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Re: bottle Neck Radeon 9600 Pro - Sockel 478 CPU

Posted on 2022-07-08, 06:21

by

by zyga64

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I remember that HP Compaq NX7010 laptops used Pentium 4 2.8GHz processors (Nothwood 533Mhz FSB). So if the laptop cooling somehow managed to do it, your desktop should be able to do it too. The question is whether your headboard supports FSB 533 ? As for Pentium 4-M support, it can be worse (for …

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Re: Best ISA super i/o chipset?

Posted on 2022-07-08, 05:56

by

by zyga64

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Last incarnations (like Goldstar Prime2, Prime2c) are 1 chip solution (maybe except for LS245 buffers for IDE). I doubt that such a simple design could require 4-layer PCB.

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Re: Desktop motherboards for Pentium M

Posted on 2022-06-21, 20:30

by

by zyga64

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Asus N4L-VM DH https://www.asus.com/supportonly/N4L-VM%20DH/HelpDesk_CPU/ There is currently one in the polish auction site allegro.pl, but the price is not very attractive (400PLN ~ 85 EUR)

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Re: Low Profile PCI Riser For AT/ATX Motherboards

Posted on 2022-06-21, 12:52

by

by zyga64

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think this interface may work only with dedicated motherboard in dedicated PCI slot. While "normal" cards works in this slot "normally", special cards may benefit from its "special" features. In the Socket A (462) era, there were Medion motherboards (manufactured by MSI) with one PCI slot in blue. …

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Re: Low Profile PCI Riser For AT/ATX Motherboards

Posted on 2022-06-21, 10:11

by

by zyga64

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not all signals are connected in parallel for PCI slots. It is only true for ISA Slots. For example not all IRQ lines are available on single PCI Slot. Note that in some BIOSes, you can assign an IRQ for the corresponding PCI slot.

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