11/04 Project

John Welch jcwelch at hal-pc.org
Wed Dec 13 12:23:01 CST 2017


I am back in front of the machine:

The M7856 is set thusly:
     1  2  3  4  5  6  7  8  9 10
-- -- -- -- -- -- -- -- -- -- --
S5 DN DN DN UP DN DN UP DN DN UP
S3 DN DN UP DN UP UP DN UP DN UP
S1 UP UP DN UP DN DN UP UP DN UP
S4 UP UP DN DN UP UP DN DN DN UP
S2 DN DN UP DN DN UP DN DN -- --

The M9312 is set thusly:

     1  2  3  4  5  6  7  8  9 10
-- -- -- -- -- -- -- -- -- -- --
S1 UP UP DN DN DN DN UP DN DN DN

This should be 300, 8, Odd, 1
I have what I think is null modem between the M7856 cable and a PC 
running XP with Hyperterm set to 300, 8,O,1

Troubleshooting from the programmers console:
CNTRL plus HALT, no bus hang.

CLR, 777566, LAD, 101, DEP, Hyperterm shows: A
CLR, 777566, LAD, 102, DEP, Hyperterm shows: AB (the B popped up next to 
the previous A )


CLR, 777564, LAD, EXAM, display shows: 000200
CLR, 773024, LAD, EXAM, display shows: 165024
CLR, 773024, LAD, EXAM, display shows: 165024
CLR, 773000, LAD, CNTRL plus START, console says: 173002

I am thinking that the Hyperterm should be seeing an "@" and I should be 
able to boot from there.

Any thoughts?

Sincerely,
John Welch



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