Re: ZuluIDE: A proper IDE device emulator for retro PCs

Posted on 2025-04-03, 12:38

by

by InterClaw

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I know for a fact that a full 8.5GB DVD-DL in real hardware works well with MSCDEX. (Classic ISO9660 has no real limitations 8.8TB!!!) I just wondered how much can the theoretical limit will be. I would look to ZuluIDE if you can make like a mega ISO to like put all "available" games and programs …

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Re: B: on the same channel?

Posted on 2025-01-10, 10:28

by

by InterClaw

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

jmarsh wrote on 2025-01-10, 10:20: If you want the drive to be B: just use a straight cable. A: drive requires the twist. Got it, thanks!

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Re: B: on the same channel?

Posted on 2025-01-10, 10:14

by

by InterClaw

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Floppy disks (almost always) run on the same cable, with a twist in the cable being used to make one of the drives respond to drive b: compared to drive a: - this is why you (almost never) have to jumper a floppy drive as a: or b: ... it's the position on the cable which determines it: VYByP.png …

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B: on the same channel?

Posted on 2025-01-10, 08:43

by

by InterClaw

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is probably a very easy question to answer. Could 3.5" diskette drives run in parallel on the same channel in like in a master/slave configuration like IDE hard drives did? Or was it always separate channels, cables, and connectors on the motherboard if you wanted to have a B: drive?

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Re: Why don't cheap VGA to HDMI adapters work below 640x480?

Posted on 2025-01-07, 16:11

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by InterClaw

in Marvin \ Video

in Marvin \ Video

It supports a range of refresh rates between 56 Hz to 86 Hz , both through VGA and digitally. EDIT: That does not mean that >60Hz input will actually get displayed as such. It is quite possible the display actually only supports 60Hz output and converts anything >60Hz to 60Hz. This is easy to test …

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Re: Why don't cheap VGA to HDMI adapters work below 640x480?

Posted on 2025-01-07, 00:50

by

by InterClaw

in Marvin \ Video

in Marvin \ Video

That's both good an bad, I guess, that these adapters don't "do much" when converting to HDMI. Mostly good I hope, to be able to deal with a more unaltered signal on the receiving end. Really interesting to get all these explanations on how this actually works! I understand about 95% of what you …

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Re: Why don't cheap VGA to HDMI adapters work below 640x480?

Posted on 2025-01-05, 00:10

by

by InterClaw

in Marvin \ Video

in Marvin \ Video

Wow, that's a lot of great information! I did actually know that "regular", low resolution DOS runs at 70Hz, but didn't really connect the dots here... Long story short, I'm starting to think that it's simply the TV that is unable to handle anything else than 60Hz. Next thing to try here would be to …

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Why don't cheap VGA to HDMI adapters work below 640x480?

Posted on 2025-01-04, 02:52

by

by InterClaw

in Marvin \ Video

in Marvin \ Video

This is more of a technical question. I've attempted three different VGA to HDMI adapters off of AliExpress now. While the results have varied some, they do behave very similarly to each other in that they don't work below 640x480. On my old 486 I do see the POST screen, but then when it switches to …

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Re: Is there an IBM Aptiva "restore CD" with DOS/win3x ?

Posted on 2024-10-28, 10:17

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by InterClaw

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Those CDs sure look like the ones that came with my model! Would be great if you could share the ISOs! Thank you so much!!! I noticed you're in Portugal. :) These are the languages included on the first CD-ROM. I'm not really sure what some of these are supposed to be. They seem to have been using …

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Re: Is there an IBM Aptiva "restore CD" with DOS/win3x ?

Posted on 2024-10-27, 15:29

by

by InterClaw

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My Aptiva 2144-888 was deliverd with two CD-ROMs. The recovery CD has 14 European languages of IBMDOS 6.30 + Windows 3.1 on it at about 40MB each, so I guess they couldn't fit the multimedia stuff on the same CD-ROM. Interestingly, the multimedia disc only has 6 languages on it, the major Eurpean …

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Re: Sierra/Dynamix sound driver hacking

Posted on 2024-02-08, 08:55

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by InterClaw

in DOS

in DOS

Did you try this fix linked in the first post? https://www.vogons.org/viewtopic.php?p=306610#p306610 Yes. With it applied, it freezes the game on the start screen for the first level (i.e. after the intro). Or at least the mouse pointer isn't moving. I don't hear any difference in the MIDI either, …

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Re: Sierra/Dynamix sound driver hacking

Posted on 2024-02-08, 02:07

by

by InterClaw

in DOS

in DOS

I've been playing TEMIM a bit lately and I've noticed the sound effects repeat themselves when enabling SoundBlaster, haven't tried with IBM PS/1 neither did with TIM, but I will and I'll edit my post with my findings =) It's a minor issue, but I thought about posting it. EDIT: IBM PS/1 audio …

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Re: EDO compatibility for an IBM 96G2597 moterboard?

Posted on 2024-01-07, 11:45

by

by InterClaw

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Excellent! Thanks for the explanations about the frequency and latency. Then I know that parity chips shouldn't be a problem. That makes it somewhat easier, but I will stay away from EDO as suggested.

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Re: EDO compatibility for an IBM 96G2597 moterboard?

Posted on 2024-01-06, 21:48

by

by InterClaw

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank for the input! In the hardware manual it says this: Specifications: 72-pin; 32-bit or 36-bit; 2MB, 4MB, 8MB, 16MB, or 32MB; 70 or 80 ns for 25 or 50 megahertz (MHz), 70 ns for 33 or 66 MHz; gold contacts; DRAM. I have no idea what frequency this ram is running at. Had a look in the BIOS, but …

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EDO compatibility for an IBM 96G2597 moterboard?

Posted on 2024-01-06, 18:39

by

by InterClaw

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Does anybody know if an IBM 96G2597 motherboard supports EDO DRAM? No idea what the chipset would be called. It's from the spring of 1995. It came in an IBM Aptiva 2144-888 (my first PC that I still have). I guess this would qualify as a late 486 system. Found this site with some info on what was …

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Re: DOSKEY insert mode with normal cursor?

Posted on 2023-11-20, 23:50

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by InterClaw

in Marvin \ Software

in Marvin \ Software

It seems to me that the version of DOSKEY.COM that comes with MS-DOS 7.10 (CDU) is an earlier version of Enhanced DOSKEY circa 2005(?) when they were about 4k in size, but not [significantly] contributed to by Wengier yet then. Today, version 2.8 is much larger and therefore naturally takes up more …

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Re: DOSKEY insert mode with normal cursor?

Posted on 2023-11-20, 23:49

by

by InterClaw

in Marvin \ Software

in Marvin \ Software

My DOSKEY.COM is 15,495 bytes long, and if loaded with /INSERT switch, then the insert mode will have the default cursor and the overstrike mode will have the tall one. I think it's the original Win98 SE DOSKey... Ah, okay. And that version was replaced by Enhanced DOSKEY then maybe for the CDU …

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Re: DOSKEY insert mode with normal cursor?

Posted on 2023-11-20, 23:47

by

by InterClaw

in Marvin \ Software

in Marvin \ Software

maxtherabbit wrote on 2023-11-20, 14:43: regarding the command line argument, who cares? isn't everyone loading it in AUTOEXEC.BAT anyway For sure! I was just motivating myself to run this modded version taking up more memory. 😀 I do believe it's worth it.

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Re: DOSKEY insert mode with normal cursor?

Posted on 2023-11-20, 04:02

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by InterClaw

in Marvin \ Software

in Marvin \ Software

Switching the look of the cursor between the modes is easier, I have just built a version that does exactly that to make life easier. The change is done in the dkres.asm file in the InitInsertMode procedure. Add the -I command line switch and you're good to go. :D That's awesome! Thank you! I …

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Re: DOSKEY insert mode with normal cursor?

Posted on 2023-11-19, 17:38

by

by InterClaw

in Marvin \ Software

in Marvin \ Software

The recent version of the enhanced DOSKEY with the source code can be downloaded here: http://paulhoule.com/doskey/ Still, it doesn't get the normal cursor when in insert mode, but you can make the changes to the source code to fix that and assemble it with JWASM. That's a great tip! I've tried …

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