Re: CGA game on option ROM

Posted on 2019-06-07, 21:23

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Maybe its also possible to put the IBM Basic on a 32KB ROM with compression Easy -) Hmmm...no ;-) This doesnt work on real hardware. But for the IBM ROM its not neccessary to copy to RAM anyway. It can directly be run from ROM. Not possible with the compression of course. But if you like to run …

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Re: Need help with password protected 286

Posted on 2019-06-07, 16:53

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

No the ROMs A+B are split up in the pattern ABABABA...you cannot combine them with copy. Think the CMOS is not empty yet. When its empty you will get a CMOS error on startup. Maybe really a Dallas in addition? Btw, never seen a password protected 286 BIOS. What happens if you disconnect the hard …

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Re: Need help with password protected 286

Posted on 2019-06-06, 20:43

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

On the top right of your photo is a battery. Remove it and try again. If it does not work at once wait one day...

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Re: EIZO MD-B12 TIGA TMS34010

Posted on 2019-06-06, 20:25

by

by Predator99

in Marvin \ Video

in Marvin \ Video

Currently not at home, maybe on the weekend. Not very keen to remove the ROMs as the card is quite valuable. I dont think its possible to read the ROMs from DOS without removing them? Can you post a photo of your card?

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Re: What retro activity did you get up to today?

Posted on 2019-06-06, 19:50

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by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Photos suggest original chip was 1MBit on this Compaq branded card which can be useful as a BIOS chip to some motherboards. I'm not sure what the motivations might have been to get it off. For just a BIOS update there's indeed no need to remove the chip, in can be updated in software. Just got to …

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Re: 486 with EGA? (and other EGA related questions)

Posted on 2019-06-06, 19:13

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

HanJammer wrote: - Many EGAs had composite output - comes in handy too. Yes? Which one? 😉 I have may EGA cards but these Cinch-Connectors are all "fake". None of them outputs a composite signal on it.

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Re: CGA game on option ROM

Posted on 2019-06-06, 19:03

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Maybe its also possible to put the IBM Basic on a 32KB ROM with compression Easy -) Hmmm...no ;-) This doesnt work on real hardware. But for the IBM ROM its not neccessary to copy to RAM anyway. It can directly be run from ROM. Not possible with the compression of course. But if you like to run …

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Re: Suntac 80286 Mainboards

Posted on 2019-06-05, 21:11

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

OK tahnks! Dont seem to be that expensive. Testx linked here 😉 ISA XMS/EMS Memory Extension / Expansion cards: Now Running without Driver / Documentation :-) I like it...

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Re: Suntac 80286 Mainboards

Posted on 2019-06-04, 21:03

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Where did you order the sockets? I wouldnt trust checkit it, didnt understand how that RAM test works so far anyway. Try testx / testext 😉

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Re: Need help identifying 8088 motherboard

Posted on 2019-06-04, 08:53

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes should work in the XT with same settings as in the 486. But the XT-Board needs to be set to Color graphics, not MDA. Are the beep codes different without the card installed?

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Re: CGA game on option ROM

Posted on 2019-06-04, 08:41

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes indeed. But not possible for games that use DOS functions. The loader is quite generic, only the entry offset maybe different Was just a proof of concept for me, did somebody do that before? Maybe its also possible to put the IBM Basic on a 32KB ROM with compression, maybe I try later...

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Re: CGA game on option ROM

Posted on 2019-06-04, 08:05

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Wow great improvements!!! :cool: Just tested in my new 386... https://www.vogons.org/viewtopic.php?f=46&t=17341&start=28924 ...on the Lo-Tech ROM Board: Works with 32kb!!! With this you also run it in most ISA Ethernet cards...mine only accept up to 32KB ROMs. Good work! :cool: Also good idea with …

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Re: Need help identifying 8088 motherboard

Posted on 2019-06-03, 22:05

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Indeed, without documentation you will not find out what the beep codes mean. Does it change when all RAM is removed? Yes, I would suggest to buy a EPROM reader and try a diagnostic ROM. No change until I get down to the first bank. If I remove anything in the first bank, it'll beep twice and then …

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Re: XTIDE on 3C509B card

Posted on 2019-06-03, 20:37

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Viserion wrote: Yes, I did turn off the ide controller in bios. The controller needs to be activated of course! But you should enter that no hard disk is connected. Does your onboard IDE-controller detect any hard drive without the XT-IDE installed? If no, there is something wrong with your onboard …

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Re: CGA game on option ROM

Posted on 2019-06-03, 20:11

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh shit you inspected my code :lol: It is not nice but I wrote this in debug.exe and it worked on the 1st try ;-) This... db 09ah dw 6,01000h ...is just a far call to 1000:6 where you copied the ROM to. Entry point is at offset 6, found this out by debugging the orginal EXE-Loader. Now the …

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Re: Need help identifying 8088 motherboard

Posted on 2019-06-03, 19:02

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Indeed, without documentation you will not find out what the beep codes mean. Does it change when all RAM is removed? Yes, I would suggest to buy a EPROM reader and try a diagnostic ROM.

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Re: 80386 BIOS image collection

Posted on 2019-06-02, 17:02

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

#35 Manufacturer/Identifier: Chipset: BIOS: ID string: Filename 386-702430d.rar File size 1.81 MiB Downloads 159 downloads Filename 386-702430d.jpg File size 1.74 MiB Views 4031 views Filename 386-702430d-2.jpg File size 1.7 MiB Views 4031 views

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Re: 80386 BIOS image collection

Posted on 2019-06-02, 17:01

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

#34 Manufacturer/Identifier: Chipset: BIOS: ID string: Filename 386-UMC-D2030613.rar File size 1.75 MiB Downloads 124 downloads Filename 386-UMC-D2030613.jpg File size 1.74 MiB Views 4032 views

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Re: 80386 BIOS image collection

Posted on 2019-06-02, 16:58

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

#33 Manufacturer/Identifier: Chipset: BIOS: ID string: Filename 386-Opti-Armas.rar File size 1.75 MiB Downloads 132 downloads Filename 386-Opti-Armas.jpg File size 1.75 MiB Views 4032 views

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Re: Bought these (retro) hardware today

Posted on 2019-06-02, 08:34

by

by Predator99

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not enough ISA-Slots...this one has..1..2..3....10!!! Not enough RAM for your 386...this one has...1...2..3...16 SIMM Sockets! https://www.vogons.org/download/file.php?id=63998&t=1 Absolutely fabulous! And its not even the full version :o! Look at all the unpopulated stuff in the corner, seems its …

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