11/45, sick or not?

[Joe R.]

   What is this??? I sent this over THREE weeks ago!

   Joe


At 06:18 PM 7/25/05 -0400, you wrote:
>  Are you sure that the lights aren't blinking too fast to see? Perhaps you
>can hang a logic probe (with a pulse extender) on one of the lights to be
>sure.
>
>    Joe
>
>
>At 06:08 PM 7/5/05 -0500, you wrote:
>>I finally allocated another day to spend on the 11/45. Unfortunately, I
must 
>>say I'm not sure if it's sick or not, hopefully someone can help.
>>
>>First, none of the blinking lights programs I've seen blink the lights. I 
>>can store and retrieve the program correctly, but when I put 1000 on the 
>>switches and hit load address then run, it goes into run mode but no lights 
>>blink (with any display switch setting). Halt makes the processor halt. 
>>Here's what I did:
>>
>>1000 005000     start: clr r0
>>1002 005200             inc r0
>>1004 006100    loop: rol  r0
>>1006 000005             reset
>>1010 000775             br loop
>>
>>On this program I put 1000 in the switches, hit load address, then run. 
>>Address lights constantly show 1010, Data lights are blank, and the Run 
>>light is on. Data Paths setting shows 0, bus register setting shows 5,
uaddr 
>>shows 177774.
>>
>>Another test...  if I store a 5007 (clr pc) in location 0 and start the 
>>processor at location 0, the address lights show all 0's, the data lights 
>>show 2, and the following lights are lit - pause, master, kernel. I also 
>>tried this with location 0 set to 777 (br .) and get the exact same results.
>>
>>More info... just after power up, the address lights show 20, the data 
>>lights show 21043 (data paths). Master & Kernel are on. The uaddress
setting 
>>shows 177570.
>>
>>So... I decided to go back to basics and check all the power points at the 
>>pins on the backplane. Here's what I found:
>>A02A2 0
>>A06A2 4.931
>>A10A1 4.931
>>A26A2 4.931
>>A19A2 0
>>A16A2 0
>>A21A2 0
>>E02B2 -15
>>A17V2 0
>>A22V2 0
>>A17U2 0
>>A22U2 0
>>F17C1 0
>>E15A1 16
>>E01B1 9
>>
>>Since my machine only has regulators at B, C, D, E, and F, I suspect the 0 
>>volt readings above are ok. All the 5 volt test points have a very clear
.2v 
>>sawtooth pattern (which looks fairly smooth at 5v). Since one manual says 
>>the ripple limit is .15, and another manual says the ripple limit is .20, I 
>>suspect I'm ok there. The ripple on -15, 16, and 9 I can't see any 
>>noticeable.
>>
>>And by the way... the cpu cardset was borrowed from another listmember and 
>>tested before I received it so I don't think it's something wrong with the 
>>cpu cardset itself.
>>
>>Any thoughts?
>>
>>Jay West 
>>
>>
>