EAI 580 Reference Handbook page 33

1-20
Table 1.5. LOGIC MODES
LOGIC MODE Function
PP (Patch Panel)
C (Clear)
S (Stop)
R (Run)
Transfers control of logic mode to the logic patch panel.
Clears all flip-flops in the logic package including
those in the counters and registers. (Clear line re-
mains high preventing initialization.)
Stops the logic clock preventing flip-flops and reg-
isters from reacting to patched inputs. (Clocked
devices may still set and reset manually.)
Normally used for computation. Clocked devices (flip-
flops, registers) respond to patch panel inputs.
1.3.9
Logic Clock Rate Pushbuttons
6 5
The four clock rate pushbuttons (10 , 10 , 10, and STEP) select the clock rate
for the synchronized logic elements in the logic package. The pushbuttons are
momentary contact switches which, when depressed, select a
new6cloc~
rate and
electrically clear the previously selected clock rate. The 10 , 10 , and 10
pushbuttons include lamps which indicate which clock rate has been
sele~ted.
Table 1.6 lists the function of each clock rate pushbutton.
Table 1.6. Clock Rate Pushbutton Functions
Clock Rate Function
10
STEP
Considered normal clock rate. One clock pulse every micro-
second.
One clock pulse every 10 microseconds.
Ten clock pulses every second.
Inhibits all clock pulses when initially depressed. Provides
one-clock pulse when subsequently depressed.
1.3.10 Logic RMT (Remote) Pushbutton
The RMT (remote) pushbutton is a latching type pushbutton which parallels both
logic mode control and clock rate control with a remote source. The remote
source may be a digital computer in a hybrid configuration or another 580
Computer when two or more are connected in a slaved configuration.