[cctalk] Problems with an RQDX3 in an 11/23.

Hello to the group, I have been banging my head against a PDP-11/23 where I have an RQDX3 I'm trying to get to work. Actually, I have two RQDX3's but only one at a time. It is configured to the factory CSR, 172150, and it has the latest microcode on it. When I run the XXDP ZRQCH0 formatter I get the following: RQDX3 Disk Formatter Utility UNIT IS Formattable Winchester (RDnn) or Floppy (RX33) Drives RSTRT ADR 145702 DR>STA CHANGE HW (L) ? Y # UNITS (D) ? 1 UNIT 0 Enter controller IP Address (O) 172150 ? What unit do you want to format [0-255] (D) 0 ? Would you like to revector a single LBN only [Y/N] (L) N ? Do you want to use the "AUTOFORMAT" Mode [Y/N] (L) Y ? N ZRQC SYS FTL ERR 00006 ON UNIT 00 TST 001 SUB 000 PC: 105742 Fatal Controller Error During Initialization. ZRQC SYS FTL ERR 00006 ON UNIT 00 TST 001 SUB 002 PC: 105742 Fatal Controller Error During Initialization. ZRQC EOP 1 2 TOTAL ERRS DR> I have been booting XXDP and also RT11 over an emulator TU58. And I have a BDV11 so it has an LTC. I did try downgrading the microcode on the RQDX3 to the previous version, 3. It was 4. But no luck. Am I missing something? This should work with an M8186 CPU board, right? Anyone have any ideas? I haven't yet, but I plan to pop one of these RQDX3s in my 11/23+ and see if it works there. -Peter