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

On May 23, 2025, at 16:58, Bill Degnan via cctalk &lt;cctalk(a)classiccmp.org&gt; wrote: Cable and termination? > On Fri, May 23, 2025 at 6:48 PM Peter Ekstrom via cctalk < > cctalk(a)classiccmp.org&gt; wrote: > > 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 >