> From: Paul Birkel > Same thing in this case.
The CPU looks to see a PMI signal that is generated by the KTJ11 - no signal -> 11/83. My impression is that except for the speed of the J11 (and the crystal), and whether or not it came with the FPJ11, all four of the M8190 board variants are otherwise identical. Whether it's a /73, /83 or /84 depends entirely on whether it has/sees PMI memory and the KTJ11-B UNIBUS converter (and the correct backplane, for the latter, of course). > The 11/84 is an 11/83 extended by a Unibus interface to support legacy > peripherals. It has a special backplane which is mostly UNIBUS slots, with a few QBUS/PMI slots on the front, and a 'special' slot in the middle into which the UNIBUS adapter goes. Noel