New to System/36
Just picked up an IBM System/36 5362 tonight. It is in pretty good physical condition with just a few minor scratches - other than needing a thorough cleaning. It has 2 60 MB hard disks in the unit. Not sure of the RAM capacity. Missing the the mode hard key. A few of us tried to get it running tonight. It came with a 3179 twin-ax terminal but no keyboard. We connected the terminal via a twinax cable direct from port 0 to the terminated Y adapter on the terminal. Never got any output on the terminal at any time other than the fairly empty status line. The S/36 front panel console light did illuminate after we connected the terminal. The key was locked to Normal but we were able to by-pass it with a jumper to get it into Service mode. The media that came with it only had disk 1 of an SSP release and we could not get that to IPL from floppy (mode 3 / panel 1000). It stepped the head motor forward and back a couple times, engaged the head, then immediately threw an error code. Any idea where I can get an SSP release for the S/36 5362 and how to write it to 8" floppies? Also where I might find a keyboard for the terminal and what can be done if anything to gauge the health of the hard drives? -Alan H.
Re: DS12887 pcb substitute with battery
What are you talking about? https://www.digikey.com/product-detail/en/maxim-integrated/DS12885/DS12885-ND/1196867 -Alan On 2017-11-21 14:16, Maciej W. Rozycki via cctech wrote: On Mon, 13 Nov 2017, systems_glitch wrote: Good stuff! I recently designed a module to build new DS1287 and DS12887 modules from the bare DS1285 and DS12885 ICs: https://imgur.com/a/cgKm5 Nice! That wouldn't solve my problem though, given the apparent unavailability of DS1285 chips (in any packaging, whether surplus or used), compared with the ubiquity of used DS1287 and DS1287A ones, possibly because they were often socketed. Using my systems as a reference for the Linux port I want to avoid any deviation from their original specification so that software does not make use of it by chance. As to the DS12887 and DS12887A chips -- these are still manufactured and readily available, as someone mentioned a while ago, although a bit highly priced, so either reworking an old one or using your alternative does help cutting cost, which may especially matter if you need more than just a few. Maciej
