T4900CT
Subtest 01 Sequential Read
This subtest performs a Cyclic Redundancy Check (CRC), that continuously
reads all the tracks on a floppy disk. The following tracks are read according
to the media type in the floppy disk drive:
Double-sided, double-density (2D): Tracks 0 to 39.
Double-sided, double-density, double-track (2DD) and double-sided,
high-density, double-track (2HD): Tracks 0 to 79.
The start track is specified when the FDD test is started from the Diagnostic
Test Menu. Refer to step 3 at the beginning of this section to set the start
track.
Subtest 02 Sequential Read/Write
This subtest continuously writes data pattern B5ADADh to all the specified
tracks selected in step 3 above. The data is then read and compared to the
original data.
Subtest 03 Random Address/Data
This subtest writes random data to random addresses on all tracks defined in
step 3 above. The data is then read and compared to the original data.
Subtest 04 Write Specified Address
This subtest writes specified data to a specified track, head, and address.
Subtest 05 Read Specified Address
This subtest reads data from a specified track, head, and address.
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