ENPages
26
8 May
Arithmetic overflow not working. See J. Sauter for details.
Pingle
9, May
Teletypes 0, 3, 7 not operable.
Manfred H.
TTY3 Has been cleaned + oiled and it seems to work now.
The space suppression lever would stick and the carriage would over print characters
R
TTY 0, 7
When I looked seemed okay. Nothing can go wrong. Will look when they are acting up
Randy
27
10-May-1967 0700
Traced Karl Pingle's AROV bug as far as the hardware. Came to the following conclusions: It works all right if there are no other interrupts on the system (that's only INSTR TEST doesn't slow it, nor TS main) but if you run a program that gets AROVF traps and push a key on the tty, the instruction following the one that gets the overflow will sometimes be executed (this is true if the following instr is a JRST on A JFCL, did not have time to test other instrs). I planted a patch in the system to save the PC in the case of AR OVR traps, and by the time you get into the APR channel, the instructions following the one that got the overflow had been executed.
John Sauter
28
May 10 - 1967
Run-away magtape strikes again.
R. Reddy
0955 10 May 67
630 hang REC scanner line 3.
SRRussell
1800 10 May
4-bit digitizer installed, K KLUJE landscaped somewhat. Dugs updated. Nothing tested yet.
[WTH?]
TTY0 repeats letters; Hueckel, M.
0945 11 May 67
Core 0 hang on a RD only cycle. AW RQ and P2 Act
CP was IF1A MC RD
29
5-11-67 TTY [2?] garbage 1853 11 May 67 Signal cable to live [printers?] intermitten TAB steps didn't work. I moved the printer to get the signal cable bent the other way. Tabs now work. Cable should have the line printer end fixed so it does ' t open when flexed like so: [image] is now [image] and works. Texted dectapes at great length this aft. Found that readjusting too 4523's EXACTLY AS SAID IN MANUAL, AND paying careful attention to the scope picture shown, gave -6V margins on 1A + IOA, much better than sloppey procedure.
30
[Notebook page] 26
A few dectapes still give errors especially on DTA 3. Perhaps there is marginal writing going on?
SR Russell
11 May 2100
TTY2 NOT WORKING properly. Sometimes it doesn't type the proper symbol, sometimes it doesn't type anything if a key is depressed. Mostly it seems to get wrong symbol.
D [Preps?]
12 May 67 930
Above is suspected of being in the 630
SRR
