RX02 Debugging

[Jerry Weiss]

> 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