IBM PS/2 Model 30 (8530, CPU:8086-2) + BIOS Revision + 8bit HDD Controller ISA card

[fs5500]

I've got motherboard for IBM PS/2 Model 30 (8530, CPU:8086-2) and tested it with IBM/Xebec HDD controller (1983) + ST-412 MFM Hard Drive.

The result is as follows.

1) On BIOS Revision : 09/02/86 (First Revision)
--> Motherboard seems to recognize HDD controller, but not boot.

2) On BIOS Revision : 02/05/87 (Third Revision)
--> Motherboard recognizes and boots DOS well.

I'll get another PS/2 Motherboard (BIOS:12/12/86) later.

I know BIOS revisions of IBM PS/2 Model 30 (8530 with 8086-2 CPU) exist about 4 kinds.

It may work with XT-IDE after Revision 2 or 3 BIOS.

 

[fs5500]

This is final result,


1) On BIOS Revision : 09/02/86 (First Revision)
--> XT-IDE (Rev.3) : Works well.
--> IBM/Xebec MFM Controller (1983) : No boot (But seems to recognize MFM Controller)

2) On BIOS Revision : 12/12/86 (Second Revision)
--> XT-IDE (Rev.3) : Works well.
--> IBM/Xebec MFM Controller (1983) : Works well

3) On BIOS Revision : 02/05/87 (Third Revision)
--> XT-IDE (Rev.3) : Works well.
--> IBM/Xebec MFM Controller (1983) : Works well

 

[PeterNC]

Very interesting research. Thank you.