RL78 Family  VDE Certified IEC60730/60335 Self Test Library 
 
R01AN0749EG0201 Rev.2.01    Page 10 of 50 
Mar 04, 2014   
Table 4: Source files: CPU Registers Tests - CS 
STL File name  Header Files 
stl_RL78_registertest_cs.asm stl.h 
Test Harness File Names  Header Files 
main.c 
stl_global_data_example.c 
stl_main_example_support function.c 
stl_peripheralinit.c 
main.h 
stl_gobal_data_example.h 
 
Syntax 
bool stl_RL78_registertest_cs(void) 
Description 
 
Test the 8bit code extension (CS) register 
The following tests are performed: 
    1. Write h'05 to the register being tested. 
    2. Read back and check it is equal. 
    3. Write h'0A to the register being tested. 
    4. Read back and check that it is equal. 
Please note that the top 4 bit are fixed to “0” 
It is the calling function’s responsibility to ensure no interrupts occur during this test. 
The original register content is restored on completion of the test 
The function “indicate_test_result.c” will be called by the test harness control files (main.c) to process the test result 
Note Function “indicate_test_result.c “is located in the module stl_main_example_support function.c 
Input Parameters 
NONE 
N/A 
Output Parameters 
NONE 
N/A 
Return Values 
bool 
Test Result Status returned in CPU Register A 
0 = Test passed. 1 = Test or parameter check failed