VOGONS


First post, by 8bitbubsy

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If you've got a miroCRYSTAL 20SD VLB (Vision864) card, I'd be very interested in a dump of its VGA BIOS.
I just want to see if I can find different versions of the BIOS to try out. 😀

Here's the exact card. It seems to be an early miroCRYSTAL 20SD revision.

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Last edited by 8bitbubsy on 2021-11-25, 13:55. Edited 2 times in total.

386:
- CPU: 386DX-40 (128kB external L1 cache)
- RAM: 8MB (0 waitstates at 40MHz)
- VGA: Diamond SpeedSTAR VGA (ET4000AX 1MB ISA)
- Audio: SB Pro 2.0 + GUS 1MB
- ISA PS/2 mouse card + ISA USB card
- MS-DOS 6.22 + Win 3.1
- MR BIOS

Reply 1 of 6, by kixs

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8bitbubsy wrote on 2021-11-09, 11:08:

If you've got a miroCRYSTAL 20SD VLB (Vision864) card, I'd be very interested in a dump of its VGA BIOS.
I just want to see if I can find different versions of the BIOS to try out. 😀

I have a few of these cards. What is your current BIOS version?

Did a quick check and I have at least two different:

1.01-09 REV 1.01
2.00-01 REV 3.70

I still need to check the last one.

Requests are also possible... /msg kixs

Reply 2 of 6, by 8bitbubsy

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I don't know yet, I'm still waiting for it to arrive in the mail.

I attached a picture of the exact card. It has an AT&T RAMDAC, do you have one of those?

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386:
- CPU: 386DX-40 (128kB external L1 cache)
- RAM: 8MB (0 waitstates at 40MHz)
- VGA: Diamond SpeedSTAR VGA (ET4000AX 1MB ISA)
- Audio: SB Pro 2.0 + GUS 1MB
- ISA PS/2 mouse card + ISA USB card
- MS-DOS 6.22 + Win 3.1
- MR BIOS

Reply 4 of 6, by 8bitbubsy

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Ok, not sure if the BIOS is compatible with the AT&T RAMDAC version.
Btw, my card really is a miroCRYSTAL 20SD, it's just a different (and probably cheaper) revision, I think.

386:
- CPU: 386DX-40 (128kB external L1 cache)
- RAM: 8MB (0 waitstates at 40MHz)
- VGA: Diamond SpeedSTAR VGA (ET4000AX 1MB ISA)
- Audio: SB Pro 2.0 + GUS 1MB
- ISA PS/2 mouse card + ISA USB card
- MS-DOS 6.22 + Win 3.1
- MR BIOS

Reply 5 of 6, by kixs

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Here you go. This is the card. I have two identical.

OWO3lmRl.jpg

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    MIRO_bios.ZIP
    File size
    17.9 KiB
    Downloads
    38 downloads
    File license
    Fair use/fair dealing exception

Requests are also possible... /msg kixs

Reply 6 of 6, by 8bitbubsy

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Thanks! I'll be sure to test the BIOS when I get my EEPROM chip in the mail.

386:
- CPU: 386DX-40 (128kB external L1 cache)
- RAM: 8MB (0 waitstates at 40MHz)
- VGA: Diamond SpeedSTAR VGA (ET4000AX 1MB ISA)
- Audio: SB Pro 2.0 + GUS 1MB
- ISA PS/2 mouse card + ISA USB card
- MS-DOS 6.22 + Win 3.1
- MR BIOS