KD11-E/EA microcode flow diagrams

Tue Jan 8 12:43:22 CST 2019

> On Jan 8, 2019, at 9:23 AM, Noel Chiappa via cctalk <cctalk at classiccmp.org> wrote:
> 
> ... Dave B and I need a PDP-11 in the FPGA on the QSIC, to run the USB protocol on; rather than using a microcontroller, we decided the hack value of putting an -11 in there was too much to resist.

Fun!  I should go read up on QSIC.  I could really use a “USIC”... :-)

> there is no uinst at 002 now! So I have no idea why they moved it. (The place they moved it to, 0744, seems like it was the first empty location.)

Weird...

>  I wonder if the actual source has survived? Probably not, alas...

Probably the best thing would be to pop a ROM out of a working /34 and read it out?  Is that how you’ve gotten your authoritative version?