I thought I had captioned that picture. It's the original RAID controller which I am not using. If I plug it in it starts the disks in the RAID array which takes ages, and steals the hard disk BIOS vector which I need for the SCSI card that's running the system.
I didn't want to remove it fully as I need to label the cables feeding it. One feeds the top drive bays, and the other the bottom so if I ever need to put it back it I need to know which is which. If I get some free time I will have a go at starting the disks in it and repairing the RAID array, and perhaps copy the disks that are installed. Dave From: Benjamin Huntsman <bhunts...@mail2.cu-portland.edu> Sent: 18 May 2018 21:49 To: Dave Wade <dave.g4...@gmail.com>; General Discussion: On-Topic and Off-Topic Posts <cctalk@classiccmp.org> Subject: Re: Restoring a PC Server 500 P/390 I gotta ask, what's the deal with the dangling card? That cracked me up! Thanks for posting some pics! _____ From: cctalk <cctalk-boun...@classiccmp.org <mailto:cctalk-boun...@classiccmp.org> > on behalf of Dave Wade via cctalk <cctalk@classiccmp.org <mailto:cctalk@classiccmp.org> > Sent: Friday, May 18, 2018 1:46 PM To: 'Guy Sotomayor Jr'; 'General Discussion: On-Topic and Off-Topic Posts' Subject: RE: Restoring a PC Server 500 P/390 > -----Original Message----- > From: Guy Sotomayor Jr <g...@shiresoft.com <mailto:g...@shiresoft.com> > > Sent: 15 May 2018 21:39 > To: Dave Wade <dave.g4...@gmail.com <mailto:dave.g4...@gmail.com> >; General Discussion: On-Topic > and Off-Topic Posts <cctalk@classiccmp.org <mailto:cctalk@classiccmp.org> > > Subject: Re: Restoring a PC Server 500 P/390 > > > > > On May 15, 2018, at 1:29 PM, Dave Wade via cctalk <cctalk@classiccmp.org <mailto: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.. > > > Well I found an XGA2 card in the pile of bits so now I have 1024x768 display resolution. I have swapped the CDROM for a SCSI DVD drive. I managed to boot MTS and there are a few pics here:- https://flic.kr/s/aHsmc1pkB1 <https://flic.kr/s/aHsmc1pkB1> <https://flic.kr/s/aHsmc1pkB1> P390 flic.kr Explore this photo album by Dave G4UGM on Flickr! next job is to tidy up and re-assemble the case.. Dave > 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
