> On May 15, 2018, at 1:29 PM, Dave Wade via cctalk <cctalk@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
