15 May
2018
15 May
'18
1:38 p.m.
On May 15, 2018, at 1:29 PM, Dave Wade via cctalk
<cctalk at classiccmp.org> wrote:
That?s, in effect, what I did. Whilst there were Microchannel IDE Controllers I have
never seen one. There are no IDE interfaces on the "Planar" so every thing must
be on the MCA bus.
So I bought a BusLogic BT646 SCSI card on E-Bay. I also bought an Adaptec card as a
spare. I think I struck lucky with the BT646. It is a simple SCSI/2 card, no raid but it
does have a BIOS with support for two bootable drives and a >4GB drive option.
OS/2 has drivers for it so it works out of the box. The OS/2 boot disks find the drive
and install the proper drivers.
To compensate for the slower "narrow" drives I bought a SCSI2SD card that puts
an SD card on the bus. OS/2 just sees it as a up two four drives depending on how I
configure it. At present I have two 4gb drives. The card in it is 32gb so I can add 2 x
12gb drives or 1 x 24gb or some other mix. The CD ROM sites on the same bus. I haven't
tried the tape drive yet..
Some time ago I acquired a PCI P/390 card (along with the various LIC files). I went down
the same path as you to build a P/390 system with OS/2 but I kept running into problems
with OS/2 versions and supported hardware.
I finally gave up and acquired a PCI based RS/6000 that I?ll install AIX on and have an
R/390. ;-) I haven?t had the time yet to make any progress on it.
But it?s good to know that you?ve managed to do this if I decide to go back and attempt
the PC route again.
TTFN - Guy