24 Sep
2021
24 Sep
'21
3:01 p.m.
Pete Turnbull via cctalk writes:
Probing the BEVENT line and it was 50hz etc, but then I realised it
wasn't actually the right voltage. Replaced a transistor and now it
boots!
Cheers,
Aaron
On 21/09/2021 20:34, Chris Zach via cctalk
wrote:
Yeah this is a 22 bit card. Josh sent me an xxdp image which I could
easily boot from my scsi2sd (thanks!). Seems to be reporting an error
with the CPU unfortunately:
]] .R ZKDJ??
]] ZKDJB2.BIC
]]
]] ERROR WHILE TESTING BOARD FUNCTIONS
]] ERROR # =001166
]] ERROR PC =040662
]] 043632
This happens regardless of whether W9 is installed or not (supposedly
disables the LTC register on the CPU?)
I'll see if I can borrow another CPU card form a friend this
weekend. Unless anyone else has any ideas? Another suggestion on IRC
was to disable the PSU LTC and enable the LTC on MXV11 but will need to
look up some details on how to do this.
Thanks,
Aaron Can an MXV11 be used in a 22 bit system? I
thought it was an 18 bit
device?
MXV11-B is 22-bit. MXV11-A is 18-bit but supposedly can be used in a
22-bit system if the RAM is disabled.