On Wed, Jul 26, 2017 at 7:37 AM, Noel Chiappa via cctalk < cctalk@classiccmp.org> wrote:
> > However, the suspect CPU panels don't have those sections; see an image of > one > here: > > http://ana-3.lcs.mit.edu/~jnc/tech/multics/jpg/multics_panel.jpg > > with detailed images here: > > http://ana-3.lcs.mit.edu/~jnc/tech/multics/jpg/multics_panel_cu1.jpg > http://ana-3.lcs.mit.edu/~jnc/tech/multics/jpg/multics_panel_cu2.jpg > http://ana-3.lcs.mit.edu/~jnc/tech/multics/jpg/multics_panel_cu3.jpg > > Which is not _definitive_ that they aren't from a Multics machine, but it > certainly raises a big question mark. So, the question is, 'are they > Multics > panels, just for some reason without the APU section, or what'? > > Image cu2, right side, "HISTORY REGISTER SELECT" had "CU COUNTER" (Control Unit; instruction decoding), "OU COUNTER" (Operations Unit; fixed point and boolean arithmetic) and "DU COUNTER" (Decimal Unit; floating point and decimal math"). Notably, no "APU COUNTER" as seen on the LCM_Labs panel; so presumably no Append Unit. This panel is from a GCOS machine. -- Charles
