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BE=2520
Standard Key Layout
[ >: key depression order]
(8) Calendar. timer test
@ Press the
key...
:
23 hours, 59 minutes, December, 31st, 1985, will be
stored; The date and time are then displayed. Confirm
after a lapse. of a minute that the calendar timer ad-
vances to 00 hours and 00 minutes.
POWER
OFF CONDITION:
Display
7 -
7 =
7 5
i 7
At the game time RESET also goes to a low level resulting
ry a
foal a
|
7 =
| |
in putting all the circuits in a reset condition ready,
for
Ll —s
—7
—
=
power failure.
|
TIME CHART
£
Power on
Power
off
ACO
Ae
ee
Vv
wi
1
.
POU
Se
ee
cons
|
:
eee
PORE
;
ft
@ With the depression of the CL key, all display columns
=
t
change to. "CG", and.is ready for the next test command
HALT
'
:
entry.
s
'
:
(RES)
4
RESET
5, CIRCUIT DESCRIPTIONS
5-1. Basic clock
o
4,19 MHz
Fig. 4
@
( 1.04MHz )
M54812L
o1
;
av!
X'tal. OUT...
+
ov
X'tal IN
Fig. 2
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