Ram Write/Read Test; N011 - Casio TE-2200 Service Manual

[ 3 ] RAM WRITE/READ test

[Function]
This test will check the WRITE/READ test for RAM.
A counter is displayed for the RAM test.
Write and read test is performed in the sequence as following. Write common (system area) and
read write common( other than the system area) and read
Also, the test is not performed for the range to (-400H) by the handler.
[Operation]
Operation : n
n : 0 = One time check (can be omitted)
not 0 = Continuous check (To stop the test, press "C" key)
[Pop-up display]
A counter is displayed for Pop-up display.
n
n=0 1 2 3 2
[Main display]
D I A G 0 0 1 1
0 0 n
n=0 1 2 3 2
[Print]
The result of all area for RAM test is printed as follows.
R A M
R A M W R O K
E N D
* The result is printed as follows if the test ended with an error.
If an error occurs while checking the BANKO address 0x60400 for normal RAM
S T D R A M W R N G B A N K 0 - 6 0 4 0 0
* The result is printed as follows if the test ended with an error.
Print
RAM WR NG-*****
RAM WR NG BANKO
RAM WR NG BANK1
0 1 1 SUBTOTAL
3
3
1 1
1 1
NG if the COMMON address for RAM is ******* to 1Kbyte.
NG if the BANKO address for RAM is ********to 1Kbyte.
NG if the BANK1 address for AM is *******to 1Kbyte.
— 33 —
write each bank read each bank.
NG