Toshiba T4500 User Manual page 83

Then the subtest reads and compares this data with the original data.
To exit, press Ctrl + Break.
Subtest 03 Real Time Carry
CAUTION: When this subtest is executed, the current date and time are erased.
This subtest checks the real time clock increments, making sure the date and time are
displayed in the following format:
Current date
Current time
Pressing Enter displays the following:
3-30
Writes 1-bit of "off" data to address FEh through 7Fh
Writes the data pattern AAh through 55h to the RTC 50-byte memory
(address 0Eh to 3Fh)
:
:
01-01-1989
00:00:37