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.

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

Unisys SG2400:
- CPU: 486DX2-66
- RAM: 16MB (0 waitstates)
- VGA: Diamond SpeedSTAR VGA (ET4000AX 1MB ISA)
- Audio: Sound Blaster 16 CT2800
- 8GB SSD
- ISA USB card (for USB sticks)
- 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.

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https://www.amibay.com/members/kixs.977/#sales-threads

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?

Unisys SG2400:
- CPU: 486DX2-66
- RAM: 16MB (0 waitstates)
- VGA: Diamond SpeedSTAR VGA (ET4000AX 1MB ISA)
- Audio: Sound Blaster 16 CT2800
- 8GB SSD
- ISA USB card (for USB sticks)
- 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.

Unisys SG2400:
- CPU: 486DX2-66
- RAM: 16MB (0 waitstates)
- VGA: Diamond SpeedSTAR VGA (ET4000AX 1MB ISA)
- Audio: Sound Blaster 16 CT2800
- 8GB SSD
- ISA USB card (for USB sticks)
- MR BIOS

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.

Unisys SG2400:
- CPU: 486DX2-66
- RAM: 16MB (0 waitstates)
- VGA: Diamond SpeedSTAR VGA (ET4000AX 1MB ISA)
- Audio: Sound Blaster 16 CT2800
- 8GB SSD
- ISA USB card (for USB sticks)
- MR BIOS