On Sat, Dec 20, 2014 at 12:12 AM, Poul-Henning Kamp <p...@phk.freebsd.dk> wrote:
> -------- > In message <blu170-w651e405ea49cc0fe9e42d0ce...@phx.gbl>, Mark Sims > writes: > > >I believe there are 5370 ROM dumps on KO4BB.COM > > They're also in the BBB-5370 repos. > > >I few years back i posted on this forum how I restored a 5370A > >that had a missing ROM board by installing an EEPROM into the empty > >socket on the CPU board. I did have to jumper a couple of address > >lines to the EEPROM and perhaps tweak the data buffer enable signal... > >it's been a while. The 5370A normally uses a separate ROM board > >containing the firmware in several ROM chips. I read out those > >chips from a good machine and merged the data into a single EPROM. > > One detail to be aware of if you do this, is that the HP5370 uses > inverters as address line buffers. I suppose that would affect the order in which you merge the ROMS into a single (E)EPROM, but that's hardly necessary any more. The images in the BBB repos are in the reversed order necessary for programming a new ROM. I had to reverse the order to disassemble the code... _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
