RX02 Debugging
Jerry Weiss
jsw at ieee.org
Tue Aug 2 17:10:49 CDT 2016
> On Aug 2, 2016, at 4:06 PM, Kirk Davis <kirkbdavis at me.com> wrote:
>
> I’m a noob using RX02’s but thought I’d run this past people that may have debugged them in the past and see if they agree with what I’m finding:
>
> I’m trying to get a RX02 + RX211 + 11/44 going. The RX02 appears to power up OK (fan and motor spinning). I verified I have the DY boot rom in the 44. Attempt booting from the console:
>
>>>> b dy
>
> S
> 17777707 173436
>
> Which halts in the DY boot rom. I look at the base RX211 register:
>
>>>> e 17777170
> 17777170 104040
>
> From the manual this like the controller is present but the high order bit is set indicating an error
>
> Looking at the status register;
>
>>>> e 17777172
> 17777172 000010
>
> Bit 3 == RX AC LO - This bit is set by the interface to indicate a power failure in the RX02 sub- system.
>
> So start looking at the RX02 power supply?
>
If you haven’t already, check the cable seating, orientation and for bent pins.
On the RX211 board J1 - TT is the location of the AC LO - Active Low signal.
Jerry
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