Lab-Volt (348?) cpu trainer



#2

I noticed in a post from 2007 that 'Ren' had one of the afore mentioned trainers. I was wondering if he or anyone can answer three and a half quick questions?
1) Is the cpu a 6502? (nmos or cmos)(it's missing)

2) What was the supply voltage (I may yet work this out from the regulator circuit but it would be nice to know for sure)

3) There may be a chip missing beside and between the reset and halt/step switches. The is an empty socket between the 74ls14 Schmitt and the 74s04 inverter.

Hoping like crazy that no-one has played musical chairs with the chips. They're all socketed.

Thanks in advance
peter walker


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP-71B CPU frequency? Christoph Giesselink 18 2,415 03-02-2013, 09:35 AM
Last Post: Gerson W. Barbosa
  OT: Mechanical CPU clock Ethan Conner 1 602 04-19-2012, 01:23 AM
Last Post: Mike Morrow
  HP 15C LE programming, does CPU run fast? designnut 1 579 02-12-2012, 05:13 PM
Last Post: Jeff O.
  Emulator CPU usage Martin Pinckney 6 1,164 10-13-2010, 01:43 AM
Last Post: HrastProgrammer
  OT: HP 5036A lab kit Johnny Bjoern Rasmussen 0 372 06-25-2010, 02:02 AM
Last Post: Johnny Bjoern Rasmussen
  Capricorn CPU microcode Olivier De Smet 6 1,155 03-10-2010, 03:50 AM
Last Post: Olivier De Smet
  HP nut CPU and illegal instruction sequences Håkan Thörngren 9 1,371 01-05-2010, 12:50 PM
Last Post: Eric Smith
  My Los Alamos Lab HP-97 looks like Gort hecube 12 1,597 09-02-2009, 07:50 PM
Last Post: hecube
  HP 35 first Lab Prototypes (17 made) pearhart 3 685 11-12-2008, 04:21 AM
Last Post: Frank Boehm (Germany)
  Lets see your office or lab with the HP stuff in it! I will start... Geoff Quickfall 48 5,620 10-23-2008, 07:21 AM
Last Post: RamLab

Forum Jump: