On Sat, May 28, 2016 at 10:42:29PM +0200, Martin Peters wrote: > I wanted to reactivate a TI Professional Computer (TIPC) and all I get > some seconds after powering it on is the message > > "** system error ** 0004" > > and a beep, lasting for about 2 seconds. > > The TIPC is an early, not really compatible clone of the IBM PC 5150. I > wonder if I need to do some reengineering and/or disassembling or if > there is a service manual out there. > I didn't find them in the technical reference but did find a list in the bios listing. If I read that correctly its interrupt or timers failed. Should be LED ON OFF OFF.
I had one as part of my vintage computer exhibit. http://www.pdp8online.com/shows/vcfe16/vcfe16.shtml I had started to put some stuff online. So far I have the disks that we got from the local TI usergroup. http://www.pdp8online.com/ftp/software/TI_PC/