Re: One more for the VAX crowd... 4000/90a FEPROM reprogram...

[Dave McGuire <mcguire%neurotica.com@localhost>]

  Is the FEPROM socketed?

          -Dave

On 08/21/2015 10:40 PM, John Klos wrote:
> My VAXstation 4000/90a made a cross-country trip so that an expert could
> replace a SIMM socket with corroded pins. It came back clean and
> beautiful. However...
> 
> I put in a full 128 megs of memory. It boots showing 64 megs, but shows:
> 
> KA49-A V1.0-006-V4.0
> 08-00-2B-30-95-F2
> 64MB
> 
> DEVNBR    DEVNAM           INFO
> ------    --------    --------------------------
>      1         NVR    OK
>      2       LCSPX    ?? 001 0480
>                       Highres 66Hz - 8 Plane 4Mpixel FB - V1.0
>      3          DZ    OK
>      4       CACHE    OK
>      5         MEM    OK
>                       128MB   0A,0B,0C,0D=16MB, 1E,1F,1G,1H=16MB
> 
> So I tested the memory. No problems. I took out 64, tested one bank. No
> problems. Took that one out and put in the other. No problems. Moved
> those SIMMs to the second bank. Tested with no problems. Swapped the
> other SIMMs in to that second bank and tested. No problems. So, both
> sets of SIMMs test fine in both banks.
> 
> I put back in the full 128 megs. It comes up as 128 megs. I try to boot
> and get messages like:
> 
> boot eza0 [1232/1831]
> 
> 
> -EZA0~
> ?02 EXT HLT
>   PC= 00001F6D PSL= 041F0000
> 
> and
> 
>>>> show boot
> 
> BOOT = DKA0
>>>> boot
> 
> 
> %VMB-F-ERR, PC = 00001340
> %VMB-I-STS, R0 = 00000908
> ?06 HLT INST
>   PC= 0000167F PSL= 041F0000
> 
> 
> Looking online, other people mention similar errors in conjunction with
> corrupted FEPROMs. I have a copy of COUGAR.SYS 1.4, but since I can't
> boot via MOP, I'm not sure what else to do.
> 
> Is there another way to load a fresh COUGAR.SYS in to the FEPROMs? I was
> thinking of writing a script which (slowly) issues DEPOSIT commands over
> the serial port for all 512 KB of COUGAR.SYS, but even if I get it
> loaded in to memory, how would I flash it in to the FEPROM from the
> chevron prompt? Could I manually write all zeros, then all ones, then
> write directly to the FEPROM?
> 
> Or is there another way to do this even though I can't MOP boot?
> 
> I can't wait to get this system running...
> 
> Thanks,
> John


-- 
Dave McGuire, AK4HZ
New Kensington, PA