On 05/03/2017 04:49 PM, Systems Glitch via cctalk wrote: > Finished building a prototype mezzanine board and testing with the > IM6100 (PDP-8 on a chip) in the 560Z board today. Full writeup: > > The lamp register is on a mezzanine for a few reasons. First off, > octal vs. hex grouping! It really throws me off to try and interpret > one on the other. Second, it allows remote mounting on a ribbon > cable, i.e. board can be mounted to a front panel. Third, I'll likely > design a 7-segment version.
Is the IM6100/6120 still easy to find? I'dve thought that the supply was exhausted by now. Octal for me is quite familiar for 12 bits; I can't recall ever seeing a 12-bit word that didn't use it. On the other hand, 16 bits is a natural for hex--and only gets confusing when it's in octal. --Chuck
