BR level is the bus request level for an Interrupt. BR 4 is typical. The RLV11 apparently asserts BIRQ L, pin AL2 - which on the 11/23 would be BIRQ4 L. I don't think the RLV11 offers any other choice.
The RLV11 print set (bitsavers) has the switch settings on page 4 of the PDF. The RLV11 controller manual can be found at: http://www.bitsavers.org/pdf/dec/qbus/EK-RLV11-TD-001_RLV11_Controller_Technical_Description_Manual_Mar78.pdf The RLV11 was developed for the original LSI Bus. I'd expect it to be Q-Bus compatible, but others here probably have more recent exposure. It has been a while since I worked with an 11/23. Have you tried manually examining the CSR to see what it shows? Does it make sense? Have you tried a CSR of 774400, which might be its address on your machine? JRJ On 8/17/2015 4:43 PM, Ben Sinclair wrote: > Now that I (hopefully) have my PDP 11/23 running (it passes CPU and memory > tests, anyway), I've been messing with my RLV11 so I can use my RL02. > > For a first step, I'm trying to run the VRLBC0 diskless diagnostic to check > the controller. I checked that the address and vector switches are set to > the defaults according to he manual, and also verified them with a > multimeter. > > The manual says the default vector address is 330, though the diagnostics > default to 160. I tried it both ways with the same result, though I should > be on 330. > > I'm not actually sure what "BR LEVEL" refers to, so I left that at the > default. > > This is a PDP 11/23 with an H-9273 backplane. I have the M8186, M8067, > M8043, then the two RLV11 boards, M8013 and M8014, then an M8012. > > Here's a sample run. It appears to start, but never does anything else. If > I give it a bad address it does complain, so I think I have the switches > correct. > > Does anyone know what I might try next? Thanks! > > > .R VRLBC0 > VRLBC0.BIC > > DRSSM-G2 > CVRLB-C-0 > RLV12 DISKLESS > UNIT IS RLV12, RLV11, OR RL11 > RSTRT ADR 145702 > DR>START > > CHANGE HW (L) ? Y > > # UNITS (D) ? 1 > > UNIT 0 > RLV12 (L) Y ? N > RLV11 (L) Y ? Y > CSR ADDRESS (O) 174400 ? > VECTOR (O) 160 ? 330 > BR LEVEL (O) 4 ? > > CHANGE SW (L) ? Y > > ERROR LIMIT FOR AUTO-DROP (D) 0 ? > > ALL REMAINING QUERIES ARE FOR OPTIONAL (MANUFACTURING) > G5388 TEST-LOOP-MODULE SET-UP. USE <^Z> TO BYPASS. > > G5388 TLM INSTALLED (L) N ? N > > MMU AVAILABLE > MEMORY SIZE 124 KW > 18 BIT ADDRESSING > > >
