Re: Native PS/2 mouse implementation for 386/486 boards using the keyboard controller

Posted on 2022-06-20, 23:06

by

by jakethompson1

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes the BIOS and the Keyboard Controller need to support it. Maybe a Driver could also work without BIOS Support. Ah yes, this is true. In particular without the AMIBIOS modification I believe feipoa had a modified NTDETECT.COM and such to detect a PS/2 mouse even though the BIOS claims there isn't …

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Re: Native PS/2 mouse implementation for 386/486 boards using the keyboard controller

Posted on 2022-06-20, 23:03

by

by jakethompson1

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've been struggling to get and optical mouse working on my 286 without an externally powered dongle, and with Rio's situation, I can't just buy another ISA PS2 card, so I'm wondering if this would with with my 286? It's a DTK motherboard (PTM-1636c) with the PC Chips F82C235 chipset. I found the …

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Re: Can't Create Partitions after DOS install

Posted on 2022-06-20, 22:57

by

by jakethompson1

in DOS

in DOS

Hello. update... No picture but hard drive was properly recognized by BIOS. I tried to hook up the HD to a modern computer via USB and create a partition with Minitool Partition Wizard ... When I re-hooked the HDD to the 486 Motherboard ...disaster... All directories and files were messed up...So I …

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Re: Is there some way in DOSBox to get out of games that DO NOT HAVE keyboard hotkey to QUIT THE GAME ?

Posted on 2022-06-20, 01:54

by

by jakethompson1

in DOSBox Games/Apps

in DOSBox Games/Apps

May not be of much help but there is always Control+Break though it tends to be an unclean exit

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Re: ESS AudioDrive (ES1868) - a surprisingly good ISA sound card

Posted on 2022-06-20, 01:31

by

by jakethompson1

in Marvin \ Sound

in Marvin \ Sound

Hello. I don't think i have a problem, but more of a query. Hence why i am going to post this in this thread rather than create a new one. I have an OEM ISA PnP ES1869F card which seems to be functioning fine. I have a dual bootup setup - Windows 98SE, and pure DOS. I have set it up just fine under …

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Re: Can't Create Partitions after DOS install

Posted on 2022-06-19, 23:28

by

by jakethompson1

in DOS

in DOS

Sounds like the BIOS may not have LBA translation mode enabled. See what disk geometry MSD (comes with DOS 6) says for drive C:. LBA translation would trade fewer cylinders for more heads. The DOS<->BIOS interface can only handle 1024 cylinders. Translation pretends there are more than 16 heads to …

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Re: Yet another 286 build.

Posted on 2022-06-15, 16:56

by

by jakethompson1

in Marvin \ System Specs

in Marvin \ System Specs

Well I don't know how, but thought I would try the 4mb modules again since I have been playing with the RAM and the jumpers, and well it now works, I now have 16mb of RAM in the 286, total overkill! When I pull the motherboard out to solder the crystal sockets might also check the simm sockets, as …

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Re: Why do some games demand a 256 colors or 16-bit desktop color depth?

Posted on 2022-06-14, 21:57

by

by jakethompson1

in Marvin \ Video

in Marvin \ Video

I've noticed that there are some games which absolutely demand that you change the desktop resolution before it will run. This is strange, as sometimes the game will be running in fullscreen exclusive mode where they could have chosen the color depth without my intervention. Moto Racer, for example …

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Re: Asrock dual-sata2 POST problem

Posted on 2022-06-14, 03:32

by

by jakethompson1

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I agree with you Repo Mann11. I wish I could say this was a successful POST. I cannot get into the BIOS and screen is frozen with no response to keyboard. I fear the damage may already be done. I now need to decide if I invest more time and money. That said, is there anyone in the vogons community …

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Re: Asrock dual-sata2 POST problem

Posted on 2022-06-14, 01:51

by

by jakethompson1

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you haven't already, you could try replacing the CMOS battery with a fresh one. Not likely the fix, but a cheap one if it is.

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Re: Yet another 286 build.

Posted on 2022-06-14, 01:48

by

by jakethompson1

in Marvin \ System Specs

in Marvin \ System Specs

Had a play and populated the socketed RAM, also there is a horrible option in the BIOS '384KB Memory Relocation' which makes the upper memory extended if enabled, which really confused any upper memory manager I tried to install. The result 1mb base, 4mb extended and with the LoTech 2mb EMS, so not …

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Re: Yet another 286 build.

Posted on 2022-06-14, 01:45

by

by jakethompson1

in Marvin \ System Specs

in Marvin \ System Specs

Okay, so what I thought was going to be a simple build has thrown some curve balls at me. 1) ET4000 with no modifications acchives 6.8fps in 3D Bench v1.0, so thought that I would try some other cards to see if I can get a litter more performance and well, it hates my 'modern' ISA cards, system …

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Re: Any possible UEFI "shim" to allow running e.g. Windows 7 32bit on newer hardware?

Posted on 2022-06-14, 01:37

by

by jakethompson1

in Windows

in Windows

Because, Windows x86 didn't support 32-Bit UEFI and using the old BIOS/CSM was the only way to boot. I'm curious whether a Compatibility Support Module is inherently custom to each BIOS or each chipset, or if there is a way to write a generic one that could be loaded from disk rather than being an …

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Re: do full height hard drives have any value?

Posted on 2022-06-13, 01:18

by

by jakethompson1

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I don't own a single retro machine without a mechanical hard drive, and I have almost 15 at this point There are those of us who still value original storage I haven't been able to wrap it up yet, but also in looking at 486 PCI chipsets, mechanical drives support multi-sector transfers (block mode) …

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Re: Socket 1/2/3 Tweaker

Posted on 2022-06-11, 17:44

by

by jakethompson1

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Anonymous Coward wrote on 2022-06-11, 13:14: Yeah, but it sure looks pertty. It sure wouldn't be justified, but another possibility is adding a Weitek co-pro capability via an interposer 😁

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Re: 486 Setup freezes suddenly

Posted on 2022-06-09, 23:53

by

by jakethompson1

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I confirm the issue was the lack of cooler. After testing with one, the system no longer freezes. I really thought this CPU could work without any heatsink/cooler. Thanks for putting me in the right direction! It can be a bit of a heated (pun) subject. In this thread we tried to pore through the …

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Re: Information wanted for UMC UM8881F sub-revisions

Posted on 2022-06-08, 02:26

by

by jakethompson1

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Do we know which chipset revision supports Cyrix linear bust mode? On Award BIOSes, both the EDO stuff and the Cyrix linear burst mode stuff seem to be gated by "rev == 04" (Yeah, they compare for equal, not "greater or equal"). I guess that UMC might have intended to map rev 00 = A, rev 01 = B, …

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JCS286/SCAT (82C235) Motherboard

Posted on 2022-06-07, 01:58

by

by jakethompson1

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You may have seen that there are a bunch of these on eBay. They come with some kind of router firmware instead of a BIOS and don't work out of the box. 1. I replaced the BIOS chip with one with a Biostar MB-1212C BIOS. It seems to work, although the turbo header on the board doesn't seem to work ( …

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Re: So, like, does the K6 3+ 550mhz really exist?

Posted on 2022-06-05, 22:45

by

by jakethompson1

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I did not expect it, but I did in fact squeeze even more performance from this system by disabling the motherboard L2. I would have guessed that retrieving stuff from there would still be faster than going to the memory, but nope. Not with these K6-II / K6-III CPUs apparently... edit: For those …

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Re: Information wanted for UMC UM8881F sub-revisions

Posted on 2022-06-05, 00:29

by

by jakethompson1

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I guess we just need a means to translate the chip's surface markings to the revision code. Is there a simple DOS tool that the majority of users of the forum can run to determine the revision? Anything that can list PCI devices including revision numbers, analogous to lspci -vmm on Linux, could do …

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