Re: Garbled screen but not at the init nor in the BIOS

Posted on 2020-07-21, 19:19

by

by Jonas-fr

in Marvin \ Video

in Marvin \ Video

I'll try to make it show an ASCII table in order to see the actual shift in numbers between wanted and actually displayed characters. That might give me a hint regarding the issue with this card.

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Re: Garbled screen but not at the init nor in the BIOS

Posted on 2020-07-21, 16:44

by

by Jonas-fr

in Marvin \ Video

in Marvin \ Video

I made a minimalist DOS bootdisk with switch.com TSR utility and with a stroke of CTRL-SHIFT-D I noticed that the video output on the external VGA display was good so it's definitively an issue regarding the circuit dedicated for the embedded LCD on the card which is the culprit (bad memory, bad …

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Garbled screen but not at the init nor in the BIOS

Posted on 2020-07-21, 14:24

by

by Jonas-fr

in Marvin \ Video

in Marvin \ Video

Hi got the strangest issue with a GD610/620 based ISA video card (Stingray Rev4+, more info on it ) on a 486 system. The video is ok in the embedded monochrome LCD (dedicated connector on the card) but as soon as the POST is finished and then the screen change (to show the HDD booting or in my case …

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Re: Help fixing rare CL-GD610/620 VGA card

Posted on 2020-07-21, 09:11

by

by Jonas-fr

in Marvin \ Video

in Marvin \ Video

Hi InbetweenDays, did you tried flash it on your card ?

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Re: Open source "Dallas" RTC replacement

Posted on 2020-07-20, 10:10

by

by Jonas-fr

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Modding a ST MK48T87B to accept an external battery proved to be not as difficult as I thought. I'll do a proper tutorial about it and link to it here.

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Re: Browsing a harddisk under DOS without using BIOS routines (INT13H)

Posted on 2020-07-16, 12:58

by

by Jonas-fr

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks verysaving, if it works your username will be well chosen indeed !

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Re: Browsing a harddisk under DOS without using BIOS routines (INT13H)

Posted on 2020-07-15, 15:43

by

by Jonas-fr

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for your insight Jo22, the readme in the zip are quite instructive as I think more and more I'll have to code my way around this particular issue.

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Browsing a harddisk under DOS without using BIOS routines (INT13H)

Posted on 2020-07-14, 19:51

by

by Jonas-fr

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Is there any known DOS utility that doesn't use INT13H to access a disk allowing one to browse its files without said HDD to be seen/declared in the BIOS? I know for a fact that IDEINFO doesn't depend on the BIOS since it can detect IDE drives by querying the bus directly (this in this case letting …

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Re: Help fixing rare CL-GD610/620 VGA card

Posted on 2020-07-13, 14:43

by

by Jonas-fr

in Marvin \ Video

in Marvin \ Video

Here's the promised dump of my Stingray Rev 4+ (VGA BIOS Version 2.22) Cirrus Logic GD610/620 based video card. Hope it helps reviving yours, let us know !

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Re: SiS 6326 AGP great card!

Posted on 2020-07-13, 10:49

by

by Jonas-fr

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi have this card in PCI (PCI-6326-8MB) and this is indeed a simple yet good one (I didn't try DOS/WIn3.1 compatibility yet though).

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Re: VOGONS Driver Library

Posted on 2020-07-13, 07:48

by

by Jonas-fr

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Correct, no docs for the Cirrus Logic drivers mentioned by Jonas-fr above. I recently obtained this 386 luggable and although it has paper manuals for the motherboard and peripherals, there is nothing about the CL card except for some penciled-in DIP switch settings and two 3.5” and one 5.25” …

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Re: VOGONS Driver Library

Posted on 2020-07-11, 10:09

by

by Jonas-fr

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Great ! Can you find any docu's to go with the utils ? Will up them but would like to include any documentation if possible. If you PM SquallStrife he may give you a login. Infortunately I've got no documentation and I believe incanus doesn't got any either. I'm currently trying to save an hold HDD …

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Re: Minimalist SC-55 setup - Naive dreams about reverse engineering the SC-55

Posted on 2020-07-11, 10:02

by

by Jonas-fr

in Marvin \ Sound

in Marvin \ Sound

I'm a bit puzzled by all these info. You mean that any SAM9407 based soundcard/daughterboard loaded with a particular soundfont (dumped from a Roland SC-55)? Can sound exactly like a SC-55 ? I'll be willing to test that since I have some guillemot cards, I just don't happen to have the sound font …

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Re: Minimalist SC-55 setup - Naive dreams about reverse engineering the SC-55

Posted on 2020-07-10, 22:53

by

by Jonas-fr

in Marvin \ Sound

in Marvin \ Sound

Very promising ! I never heard about those cards, I think they're unobtainium nowadays and basically rare than a SCD-55 ? I wonder if there's some attempt made to clone them since I read somewhere that dream branded chips can still be found.

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Re: What's this card

Posted on 2020-07-10, 22:49

by

by Jonas-fr

in Marvin \ Video

in Marvin \ Video

Thanks predator99, indeed it seems to be the same card if not for the RAMDAC. We also share the same DIPSW settings I see. In the meantime thanks to the help of incanus I was able to confirm that my card was OK by switching via software to the external display. Here's his post with the needed …

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Re: Help fixing rare CL-GD610/620 VGA card

Posted on 2020-07-10, 22:44

by

by Jonas-fr

in Marvin \ Video

in Marvin \ Video

I can't thank you enough incanus, your version of eagle is a bit older than the one on Vogons drivers (4.01 vs 5.03) and thanks to it I've been able to run it and switch to my external display thus confirming that my card was OK !! I took the liberty to post these utilities on the dedicated topic in …

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Re: VOGONS Driver Library

Posted on 2020-07-10, 22:43

by

by Jonas-fr

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

All credit for incanus for these new utilities ! Here are 3 utilities for Cirrcus Logic GD610/620 VGA cards (with flat panel controllers) Eagle.com v4.01 which is compatible with VGA BIOS <3.0 (on the site there's an newer version of it, 5.03 to be exact which isn't compatible with VGA BIOS <3.0) …

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Re: What's this card

Posted on 2020-07-10, 15:24

by

by Jonas-fr

in Marvin \ Video

in Marvin \ Video

Yeah I think a more appropriate term would be lunchbox PC as it designates this exact form factor. Dolch clone was the word on top of my head when I wrote this first post. Thanks anyway for your help into seeing if you've got the same card ! Any tips is much appreciated and helps a long way !

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Re: Help fixing rare CL-GD610/620 VGA card

Posted on 2020-07-10, 14:04

by

by Jonas-fr

in Marvin \ Video

in Marvin \ Video

Vogons is amazing, I've got the very same card as you InbetweenDays (down to the 2.2 BIOS version) but albeit in the working state in a 486 lunchbox machine ! I'll dump the BIOS as soon as I can find my TL866 :) My problem is making it display anything on an external VGA monitor (no signal with my …

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Re: What's this card

Posted on 2020-07-10, 14:03

by

by Jonas-fr

in Marvin \ Video

in Marvin \ Video

I finaly found someone with the same card and the very same bios (Stingray rev4+, VGA BIOS version 2.2) here: https://www.vogons.org/viewtopic.php?p=857850 I'm goind to dump the BIOS of mine to help him. Sadly given that it's a 2.2 BIOS the eagle utility isn't working ("Video BIOS Version 3.0 or …

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