Rom & Ssp Diagnostics; Standard Rom Check; Service Rom Check; Ssp Check - Sharp ER-A750 Service Manual

3-3. ROM & SSP Diagnostics
The standard ROM and the service ROM are checked. The SSP
circuit is also checked.
The following menu is displayed. The cursor position is highlighted.
Use key and key to move the cursor. Move the cursor to the
process you desire and press the enter key. The selected individual
diagnostics program is executed.
ROM & SSP Check
Standard§ROM§Check

Service ROM Check

SSP Check

1) Standard ROM Check

1 Check contents
The standard ROM area (C00000H
unit of byte. If the lower two digits of the result is 10H, it is normal.
The ROM version and the model name code which are stored in
address CFFFE0H CFFFEFH where the ROM version and the
check sum correction data are stored are displayed. The format of
data (ASCII) to be stored is as follows:
CFFFE0H CFFFEFH: Model name code (example: ER-A750.
Display is made up to 00H of data.)
CFFFF0H CFFFF9H: 27801R****(****=PROGRAM VERSION)
CFFFFAH CFFFFBH: BLOCK NO. ("CO"
CFFFFCH: TERMINATOR ("=")
CFFFFDH CFFFFEH: BLOCK VERSION (example "00")
CFFFFFH: CHECK SUM CORRECTION DATA
The flash ROM used as the standard ROM has rewriting block of
64KB as the unit. To control the version in each block, the com-
position is the same as the above CFFFF0H or later and arranged
in each 64KByte. At that time, correction is made so that the sum
of each block becomes 01H, and the total of 1MByte is 10H.
The program version of the IPL is displayed so that 0PAGE where
the IPL is stored is individually controlled.
2 Display
Standard ROM Sum Check
IPL PROGRAM Version
APL PROGRAM Version
27801R****
A750
BLOCK Version
3 Terminating procedure
After displaying the check result, press the CANCEL key to ter-
minate the check.
CFFFFFH) is added in the
"CF")
: PASS!!(or ERROR!!)
**
Displays the version.
ER
C0=**,C1=**,C2=**,C3=**
C4=**,C5=**,C6=**,C7=**
:
2) SERVICE ROM Check
1 Check content
The standard ROM area (D00000H
unit of byte. If the lower two digits of the result is 10H, it is normal.
The ROM version and the model name code which are stored in
address DFFFE0H
check sum correction data are stored are displayed. The format of
data (ASCII) to be stored is as follows:
DFFFE0H DFFFEFH: Model name code (example: ER-A750.
Display is made up to 00H of data.)
DFFFF0H DFFFF9H: 27801R****(****=PROGRAM VERSION)
DFFFFAH DFFFFBH: BLOCK NO. ("CO"
DFFFFCH: TERMINATOR ("=")
DFFFFDH DFFFFEH: BLOCK VERSION (example "00")
DFFFFFH: CHECK SUM CORRECTION DATA
This SERVICE ROM allows to write into the FLASH ROM when
re-execution is impossible because of an abnormality during
rewriting into the FLASH ROM. The composition is the same as
the standard ROM.
The program version of the IPL is displayed so that 0PAGE where
the IPL is stored is individually controlled.
2 Display
Service ROM Sum Check
IPL PROGRAM Version
APL PROGRAM Version
27801R****
A750
BLOCK Version
3 Terminating procedure
After displaying the check result, press the CANCEL key to ter-
minate the check.
3) SSP Check
1 Check content
By starting this check program, the SSP setting for checking is
automatically performed and the SSP check is executed and the
result is displayed.
The SSP check sets data for check in the vacant space in the
SSP entry register, and deletes the data for check after comple-
tion of checking. Therefore, the already set data are not changed
by this check.
2 Display
SSP Check
SSP (NMI) Check
!)
3 Terminating procedure
After displaying the check result, press the CANCEL key to ter-
minate the check.
6 – 4
DFFFFFH) is added in the
DFFFEFH where the ROM version and the
"CF")
: PASS!!(or ERROR!!)
**
Displays the version.
ER
C0=**,C1=**,C2=**,C3=**
C4=**,C5=**,C6=**,C7=**
:
: PASS!!(ERROR!