VAX-11/730 and Emulex UC17 woes

Tue May 24 15:58:17 CDT 2016

> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Glen Slick
> Sent: Tuesday, May 24, 2016 12:48 PM
> To: General Discussion: On-Topic and Off-Topic Posts
> <cctalk at classiccmp.org>
> Subject: Re: VAX-11/730 and Emulex UC17 woes
> 
> On Tue, May 24, 2016 at 12:27 PM, Josh Dersch
> <JoshD at livingcomputermuseum.org> wrote:
> > Hi all --
> >
> > I'm working on restoring a VAX-11/730 at the museum and things have
> been going pretty well thus far.  I've been bootstrapping the console and
> diagnostics from simulated TU58 (images from:
> https://github.com/NF6X/VAX-11-730-Console-v57).  All of the TU58-based
> diagnostics are passing.
> >
> > I'm attempting to bring up an Emulex UC17 SCSI controller for mass storage
> and I'm having trouble with it.  I thought I'd check with you guys to see if any
> of you have seen this issue or have any idea where I might be obviously
> going wrong before I start digging deeper into this.
> >
> > The current issue is that I can't get the UC17's built in diagnostic/utility
> (referred to as the 'FRD' in the manual) to run.  I am following all of the steps
> to the letter (see the manual here
> http://www.mirrorservice.org/sites/www.bitsavers.org/pdf/emulex/UC175
> 1001-C_UC17_Dec90.pdf, pages 71-79 (section 4.5.7)) and I'm getting the
> right values back when examining the SA register during the process, but
> executing "S 80" halts after a second or so with:
> >
> > ?08  PC=00000298
> >
> > Which is an odd way for it to halt, 08 means "No user WCS" according to the
> 11/730 user's guide.
> >
> > Here's the full conversation, just in case:
> >
> >>>> I
> >>>> D/L/P F26800 80000000
> >>>> D/L/P F26804 80000001
> >>>> D/W/P FFF46A 3003
> >>>> E/W/P FFF46A
> > P 00FFF46A      0100
> >>>> D/W/P FFF46A 4401
> >>>> E/W/P FFF46A
> > P 00FFF46A      0400
> >>>> S 80
> >
> > ?08  PC=00000298
> >
> > I've confirmed that the issue isn't with the card, I can run the FRD without
> issue on it, in an 11/44 we have here.
> >
> 
> Don't know if this will help at all.  Not sure if the UC07 and UC17 share the
> same firmware and VAX host resident FRD code. On the QBus
> UC07 version (firmware version G143R) there is a short stub located at 80h
> which jumps to the main code at 280h. (If you have a VCB02 instead of a
> serial console you start at 82h which then jumps to 282h and does something
> slightly different).

Interesting, the UC17 has the same firmware version (G143R) on the label of the EPROM.  I wonder if the contents are identical.  Could you send me a dump of your ROM so I can compare?

> 
> I dumped the memory for this code from the VAX and entered it into SIMH
> to use SIMH as an VAX unassembler and this is what it looks like.
> If the UC17 host resident VAX code is the same, any clues here as to what
> might be causing a halt on the 11/730?

The values in/around 298 look to be identical, but I haven't dumped everything in memory.  I'll poke at the code, do some disassembly and see I can figure out what's going on...

Thanks!
Josh

> 
> sim> e -m 80-87
> 80:     BRB 85
> 82:     BRW 282
> 85:     BRW 280
> 
> sim> e -m 280-3d3
> 280:    BRB 298
> 282:    BISB2 #1,27F
> 286:    MOVL #80000003,@#2008800C
> 291:    MTPR #800,#4
> 298:    MOVL #80000002,@#20088008
> 2A3:    NOP
> 2A4:    MTPR #1F,#12
> 2A7:    MOVAL 400,R1
> 2AE:    MOVL #200,R2
> 2B5:    MOVL #0,(R1)+
> 2B8:    SOBGTR R2,2B5
> 2BB:    MOVL #20001468,R5
> 2C2:    CLRW (R5)
> 2C4:    BITW #800,2(R5)
> 2CA:    BEQL 2C4
> 2CC:    MOVW #3003,2(R5)
> 2D2:    CMPW #100,2(R5)
> 2D8:    BNEQ 2D2
> 2DA:    MOVW #4600,2(R5)
> 2E0:    CMPW #400,2(R5)
> 2E6:    BNEQ 2E0
> 2E8:    MOVW #400,2(R5)
> 2EE:    TSTB 27F
> 2F1:    BEQL 30E
> 2F3:    MOVL #1,R0
> 2F6:    JSB @#20040008
> 2FC:    CMPB #18,R0
> 2FF:    BNEQ 304
> 301:    BRW 362
> 304:    EXTZV #0,#7,R0,R0
> 309:    MOVL R0,R2
> 30C:    BRB 338
> 30E:    MFPR #20,R1
> 311:    BBC #7,R1,362
> 315:    MFPR #21,R2
> 318:    EXTZV #0,#7,R2,R2
> 31D:    CMPB R2,#13
> 320:    BNEQ 338
> 322:    MFPR #20,R0
> 325:    BBC #7,R0,322
> 329:    MFPR #21,R0
> 32C:    EXTZV #0,#7,R0,R0
> 331:    CMPB R0,#11
> 334:    BNEQ 322
> 336:    BRB 362
> 338:    BISW2 #200,R2
> 33D:    MOVW R2,2(R5)
> 341:    MOVW 2(R5),R2
> 345:    BITW #200,R2
> 34A:    BEQL 341
> 34C:    BICL2 #200,R2
> 353:    MOVW R2,2(R5)
> 357:    MOVW 2(R5),R2
> 35B:    BITW #200,R2
> 360:    BNEQ 357
> 362:    MOVW 2(R5),R2
> 366:    BITW #100,R2
> 36B:    BEQL 2EE
> 36D:    MOVW R2,2(R5)
> 371:    MOVW 2(R5),R2
> 375:    BITW #100,R2
> 37A:    BNEQ 371
> 37C:    BICW2 #100,R2
> 381:    MOVW R2,2(R5)
> 385:    EXTZV #0,#7,R2,R2
> 38A:    BEQL 3C4
> 38C:    TSTB 27F
> 390:    BEQL 3B3
> 392:    MOVB R2,3CF
> 399:    MOVAL 3C7,R0
> 3A0:    JSB @#2004000C
> 3A6:    MOVW 2(R5),R2
> 3AA:    BITW #100,R2
> 3AF:    BEQL 3A6
> 3B1:    BRB 36D
> 3B3:    MFPR #22,R1
> 3B6:    BBC #7,R1,3B3
> 3BA:    MTPR R2,#23
> 3BD:    MFPR #22,R1
> 3C0:    BBC #7,R1,3BD
> 3C4:    BRW 2EE