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S T E P
O P E R A T I O N
Memory
2
Check
1
2
Memory
OK
Check
3
4
OK
5
Memory
OK
Check
6
OK
ESC
DISPLAY
MEMORY
3 WR 2
4 READ 2
1 WR 1
5 DUMP
2 READ 1
6 CHKSUM
RAM WRITE 1
MEMORY
3 WR 2
4 READ 2
1 WR 1
5 DUMP
2 READ 1
6 CHKSUM
EXECUTING !!
CMPLETE !!
32/64/128 KB
MEMORY
3 WR 2
4 READ 2
1 WR 1
5 DUMP
2 READ 1
6 CHKSUM
RAM WRITE 2
MEMORY
3 WR 2
4 READ 2
1 WR 1
5 DUMP
2 READ 1
6 CHKSUM
EXECUTING !!
CMPLETE !!
32/64/128 KB
MEMORY
3 WR 2
4 READ 2
1 WR 1
5 DUMP
2 READ 1
6 CHKSUM
XXXX
MEMORY
3 WR 2
4 READ 2
1 WR 1
5 DUMP
2 READ 1
6 CHKSUM
CHECK SUM
TY SZ SUM XOR
C5 0
512 XXX
XX
MEMORY
3 WR 2
4 READ 2
1 WR 1
5 DUMP
2 READ 1
6 CHKSUM
TEST
4 BUZZER
1 DISP
5 I/F
2 MEMORY
6 CONT
3 KEY
7 RESET
— 12 —
N O T E
Write the test pattern 1 into RAM
After 1 sec.
Read the test pattern 1 from RAM
After 1 sec.
Write the test pattern 2 into RAM
After 1 sec.
Read the test pattern 2 from RAM
After 1 sec.
Wiring check for ROM
Check SUM value
Version-
E = 65D6
Version-
F = E146
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