17 Apr
2025
17 Apr
'25
2:36 p.m.
Mattis Lind wrote:
Most (All?) unibus devices can be set anywhere in the
PDP-11 IO space. This
means the last 8kbyte of the 256k Unibus space. Addresses 760000 - 777777
octal. A quick glance at the schematic shows that this is true for the
RK11-D as well. What is interesting though is that the doc mentions 8
address jumpers while according to the schematic it has 10. Jumpers W4-W13.
/Mattis
Aha, thanks, that explains the situation! I found the jumpers in the drawings and found
the address bits that can be configured.
Jos