Octek Jaguar V-Q Rev 1.42 and SCSI controller \ VOGONS

Octek Jaguar V-Q Rev 1.42 and SCSI controller

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First post, by Vendest

Posted on 2024-10-02, 14:08

Vendest Offline

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Hi, I was wondering if there is a suitable bios that would allow to set a SCSI HDD as a fixed drive for this motherboard?
The current bios Mr.Bios 1.65 do not seem to support SCSI as a fixed drive.
Octek Jaguar V-Q Rev 1.42 with AMD386 DX-40 and Chipset MX83C305/MX83C306.
Thanks.

Dumped the bios that came with the motherboard.

Reply 1 of 5, by AlaricD

Posted on 2024-10-02, 14:19

AlaricD Offline

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That may be a function of the SCSI controller's BIOS, not the motherboard's BIOS.

Be sure the SCSI termination is set correctly and that the controller's own BIOS detects a drive connected to it (should be messages during the POST).

Reply 2 of 5, by Vendest

Posted on 2024-10-02, 14:36

Vendest Offline

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The controller is an Adaptec AHA-1540CP that is bootable and detects the drive during POST, the HDD is properly set and is accessible thru FDISK after booting off the floppy drive.
The main issue is the bios on the MB that requires to define a drive as C: (fixed 80) or D: (fixed 81) but does not provide for non PATA.

Reply 3 of 5, by rasz_pl

Posted on 2024-10-02, 20:42

rasz_pl Offline

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Motherboard bios doesnt factor into this. SCSI controller bios overrides it and should be able to boot of any SCSI drive.

https://github.com/raszpl/FIC-486-GAC-2-Cache-Module for AT&T Globalyst
https://github.com/raszpl/386RC-16 memory board
https://github.com/raszpl/440BX Reference Design adapted to Kicad
https://github.com/raszpl/Zenith_ZBIOS MFM-300 Monitor

Reply 4 of 5, by AlaricD

Posted on 2024-10-02, 20:57

AlaricD Offline

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Vendest wrote on 2024-10-02, 14:36:

The controller is an Adaptec AHA-1540CP that is bootable and detects the drive during POST, the HDD is properly set and is accessible thru FDISK after booting off the floppy drive.
The main issue is the bios on the MB that requires to define a drive as C: (fixed 80) or D: (fixed 81) but does not provide for non PATA.

The motherboard BIOS doesn't need to even know about it. Those settings are only for drives on the IDE controller(s).

Reply 5 of 5, by akimmet

Posted on 2024-10-02, 21:09

akimmet Offline

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When using a drive controller with a built in BIOS, most of the time you will want to leave the motherboard harddrive settings empty or disabled.

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