Hi > On Dec 5, 2014, at 3:11 AM, Hal Murray <[email protected]> wrote: > > > [email protected] said: >> Aren't these units vintage 2000?
Rumor has it that HP started the project for Lucent *before* the Z3801 came out. Lucent didn’t buy them for a long time. HP decided to chase other customers. > > The ROM/PAL stickers on mine say 9905 and 9914. > > > [email protected] said: >> The Motorola 68000 CPU was available in 1982 …. and the versions on these boards were quite popular through the 1990’s > > When did HP ship their first GPSDO? > > Ahh. I have a Z3801A that says: > > "COPYRIGHT 1991-1995 MOTOROLA INC.” So development likely started in the late 1980’s. > "SFTW P/N # 98-P39972M " > "SOFTWARE VER # 8 " > "SOFTWARE REV # 4 " > "SOFTWARE DATE 13 JUL 1995" > > A 68000 seems like a good choice to me. It's probably overkill, but that's a > whole lot better than running out of CPU and/or the bugs associated with > trying to squeeze software that doesn't quite fit. > > If I had working code, I probably wouldn't rock to boat to save a few > pennies. How many of them did they ship? Also consider the need to debug this stuff with the same board as you ship. There is a *lot* of logging and status even in the “customer side” protocols. I’d bet there is even more in in some HP only commands. Bob > > > > -- > These are my opinions. I hate spam. > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
