UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

Jörg Hoppe j_hoppe at t-online.de
Tue Nov 19 05:41:25 CST 2019


 >> Yes, can (get a kit with SMT work done)
 > OK, that’s the answer I needed;
 > If I want to put one of these in a KS10, can the parity lines be 
hacked from the software
 > (the KS10 uses them as two extra data bits) or are they hard-wired to 

Several people asked to make UniBone PDP-10able, it should be not problem.

UNIBUS PA,PB are (like all other signals) just pins on a GPIO 
multiplier, no interpretation is done in hardware.

On software side the PRU must sample 18bit instead of 16bit for DATA, 
then lots of "uint16_t" must be changed to "uint32_t" in the whole 
software stack.

Not clear what to do with existing device emulators: did DEC construct 
18bit mutants for a few PDP-11 peripherals to run them in KS10?

UNIBUS on a PDP-10 makes only sense to me if the big pool of PDP-11 
peripherals can be used directly.



More information about the cctech mailing list