Re: "Input not supported" error when resolution set to 800x600 256 color

Posted on Yesterday, 16:54

by

by Grzyb

in Marvin \ Video

in Marvin \ Video

I have a TVGA9000C-based board (albeit with a different layout, like this one ), and can confirm it does support 800x600 256 colors at 60 Hz and worked fine under Win9x in that mode, so I would assume that OP card's memory is too slow (the INB41256 chips are rated 100ns, which could be insufficient …

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Re: "Input not supported" error when resolution set to 800x600 256 color

Posted on 2023-05-29, 22:29

by

by Grzyb

in Marvin \ Video

in Marvin \ Video

I'm inclined to trust the datasheet, and believe that 9000C can do 800x600x256 NI with 56..72 Hz refresh rate. But I'm unable to provide any further assistance at this moment. I feel like experimenting with such card myself, but currently don't have the necessary hardware. So, if you really need …

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Re: Older MAG monitor causing VGA cards to boot in mono mode?

Posted on 2023-05-29, 20:28

by

by Grzyb

in Marvin \ Video

in Marvin \ Video

Problems with 8-bit TVGA9000 based ISA video card

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Re: "Input not supported" error when resolution set to 800x600 256 color

Posted on 2023-05-28, 20:29

by

by Grzyb

in Marvin \ Video

in Marvin \ Video

There was this problem with earlier Tridents: The Trident 8800 chips have a problem with 256 color modes, as they always double the pixels output in 256 color mode. Thus a 640x400 256 color mode (5Ch) actually uses a 1280x400 frame, requiring at least a multi sync monitor. This problem is fixed on …

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Re: "Input not supported" error when resolution set to 800x600 256 color

Posted on 2023-05-28, 20:01

by

by Grzyb

in Marvin \ Video

in Marvin \ Video

GunKneeNeon wrote on 2023-05-28, 19:48: 50.3MHz only corresponds to 39.21Hz. Does that mean what supported by the VGA is not supported by the LCD and vice versa? I'm lost... According to the datasheet, 50.3 MHz pixel clock corresponds to 72 Hz VSYNC. Something's wrong... misconfigured jumpers? …

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Re: "Input not supported" error when resolution set to 800x600 256 color

Posted on 2023-05-28, 19:37

by

by Grzyb

in Marvin \ Video

in Marvin \ Video

The datasheet can be downloaded from http://www.vgamuseum.info/index.php/component … ident-tvga9000c For 800x600x256 NI, the highest pixel clock listed is 50.3 MHz...

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Re: Bought these (retro) hardware today

Posted on 2023-05-28, 17:55

by

by Grzyb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Still nothing much about that SARC card, jumpers are "C/M" for the first, "PRT" for the next two and CG - EMU on the last. So gotta assume Color/Mono, LPT port address or IRQ settings, maybe both 5/7 320-340 or something, and CGA mode or Hercules emulation... I think maybe. Not sure if the header …

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Re: "Input not supported" error when resolution set to 800x600 256 color

Posted on 2023-05-28, 17:09

by

by Grzyb

in Marvin \ Video

in Marvin \ Video

TVGA9000C supports two non-interlaced 800x600 256-color modes: Filename 9000c.jpg File size 85.34 KiB Views 233 views Not sure how to select them... TVGACRTC.EXE may be the proper tool.

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Re: "Input not supported" error when resolution set to 800x600 256 color

Posted on 2023-05-28, 16:29

by

by Grzyb

in Marvin \ Video

in Marvin \ Video

OK, I'm inclined to believe those IBM 90x0711 chips are 256K x 3-bit. Does 800x600 16-color work with your monitor? And how about 1024x768 ?

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Re: "Input not supported" error when resolution set to 800x600 256 color

Posted on 2023-05-28, 13:31

by

by Grzyb

in Marvin \ Video

in Marvin \ Video

It's possible the card is configured for 800x600 with interlace. Try SVM.EXE - AFAIR there are options to test various refresh rates and interlace settings. Also, are you sure that card has 512 KB of RAM? It looks weird... 4 x 41256 = 128 KB I don't know about those IBM chips, but they may be 41256 …

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Re: Help identify this 386DX-49 motherboard ... EISA?

Posted on 2023-05-26, 23:17

by

by Grzyb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Looks like Opti Local Bus, not EISA.

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Re: Intel publishes a white paper on x86S, a 64-bit only architecture

Posted on 2023-05-20, 10:15

by

by Grzyb

in Release Announcements

in Release Announcements

I think I'm experiencing Deja Vu... 80376 ???

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Re: Why isn't drawn pictures with an old video card?

Posted on 2023-05-19, 18:28

by

by Grzyb

in PC Emulation

in PC Emulation

Jo22 wrote on 2023-05-19, 18:14: Hm. Maybe Windows 1.x existed in an OEM version for Tandy? The 2000 wasn't 100% PC compatible, I heard, because it was based on 80186. OK, according to Wikipedia, "A modified version of Windows 1.0 was able to run on the Tandy 2000".

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Re: Why isn't drawn pictures with an old video card?

Posted on 2023-05-19, 17:44

by

by Grzyb

in PC Emulation

in PC Emulation

Windows 1.x was developed on a platform with a higher-end graphics, a Tandy 2000 (640x400 16c). Can't see any Tandy option in Windows 1.01, nor any other 640x400 hardware. The best is EGA. Notable is the lack of PGC support - I guess the PGC was best suited for vector-oriented graphics in CAD …

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Re: Willow - Windows 3.0 Real Mode applications on OS/2 1.x and up (and stuff)

Posted on 2023-05-19, 17:14

by

by Grzyb

in Milliways

in Milliways

Quick update. Found an historic ad of 1992. It's about a 'professional' line of computers. The models shown have 4MB of RAM pre-installed, upgradeable to ~32MB. Windows 3.0 is also for sale. Yes, at certain point 4 MB of RAM became the factory default for 386DX and above. And, when the professional …

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Re: Sound Galaxy NX on a Commodore PC20-III

Posted on 2023-05-17, 14:18

by

by Grzyb

in Marvin \ Sound

in Marvin \ Sound

IRQ2 can't be used on ATs because of the cascading setup of the second PIC What exactly happens when a card using IRQ 2 is installed in an AT ? I know that it's serviced as IRQ 9, and supporting IRQ 9 requires the software to be AT-aware. But what about pre-AT software? Anything that handles IRQ 2 …

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Re: Sound Galaxy NX on a Commodore PC20-III

Posted on 2023-05-17, 12:39

by

by Grzyb

in Marvin \ Sound

in Marvin \ Sound

I don't think the SB Pro was ever marketed as an AT-only card. I have an early one, I'll have to see if I can find my manual and see if it says anything about minimum requirements. This manual - https://www.manualslib.com/manual/1802842/Creative-Sound-Blaster-Pro.html#product-Sound%20Blaster%20Pro …

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Re: Sound Galaxy NX on a Commodore PC20-III

Posted on 2023-05-16, 12:41

by

by Grzyb

in Marvin \ Sound

in Marvin \ Sound

BTW: Commodore PC 10-III and 20-III have the dedicated mouse port, AFAIK for the same mouse as Amiga. Any idea which IRQ that port uses?

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Re: Sound Galaxy NX on a Commodore PC20-III

Posted on 2023-05-16, 12:25

by

by Grzyb

in Marvin \ Sound

in Marvin \ Sound

Scali wrote on 2023-05-16, 12:16: It is not entirely clear why they changed it. I would say it's pretty clear - Sound Blaster: From IRQ7 to IRQ5, when and why?

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Re: Sound Galaxy NX on a Commodore PC20-III

Posted on 2023-05-16, 10:17

by

by Grzyb

in Marvin \ Sound

in Marvin \ Sound

Use IO 220h, IRQ 7, DMA 1. No need to disable the LPT: - if there's nothing connected, it won't generate interrupts - if there's a printer, it's operated in polling mode - again, no interrupts And remember to add this to AUTOEXEC.BAT: set BLASTER=A220 I7 D1 Edit: Aztech's FTP site is no longer …

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