ENPages
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Found no trouble or sign of trouble with magtape hardware.
Found that it is advisable to put at least JFCL's or EQIU between FOO: 0 CONSO 224, 1 JRST .-1
NB → JFCL JFCL
JRST @ FOO → CONO 220, 17000 17400
FOO is called with JSR to wait for mag type
This seems to be a feature due to the 800Dpi clock having a period of 27μs. This is "CK1" used to step the 4-flop.
Anyway it's a trap for simple diagnostics, but no other programs, we think.
Tried writing file with a few records with TECO in the system, and then skipping to end of file with TECO. No trouble found.
42
This last test seems, as well as I can see, to duplicate RAJ REDDY's program that was giving all the trouble.
SRR
05-27-67 0700
Petit's clock gives back ZERO for both CONI and DATAI.
John Sauter
05-27-67 12:30
Some idiot (J. RANDOM BENEDICT, NAMELY) disconnected power to the DEC part of the clock & then didn't re-connect it. The same was done to the D to A. I reconnected the clock but not the D to A.
P. Petit
43
05-27-67 14:15
I believe I have discovered the cause of the skip to infinity bug. It is software. It seems the system sometimes transfers a junk comand to the control. See me for details.
P. Petit
20:00 5-27-67
LPT stops for no obvious reason sometimes with LOW PAPER ALERT on. I kicked it a couple of times & it's fine now.
Weiher
0700 28 May 67
Found mag tape "skip to infinity" bug. Extra wire from 3825V ([?] cm sef) to 3824V in 516 input to CONO 220. Set. Removed wire. Works now. Effect was to strobe current contents of IO buss into command hold buffer when skip to EOF went away. (i.e. it saw an EOF). SRR
44
0810 28 MAY 67
ADJUSTED WRITE LOCK DETECTOR ON MTA0
CLEANED MTA0
TESTED WITH MAGTST in system GOT some complaints about [bad?] scratch tapes (they very likely are bad)
SRR
1730 28 MAY 67
TTY2 frequently hears typed input incorrectly!
C. Fa[rr?]ell
0700 29-MAY-67
TTY2 occasionally sends two chars for the price of one (second char seems to always be a ZERO).
J. Sauter
45
TTY2 has been fixed?!! By Gonzales adjusted ans.back drum holder and trip tab from kybrd JG Randy
Beware of ungar soldering irons they can get nor on the barrirs and do lots "of damage" to you & equipment.
Please use new u-ground cords. Their shorter but safer Randy
Spacewar buttons 29 and 31 intermittently stay on (trouble seems electrical rather than mechanical). Beware. W Wilmer
