3 Tests and Diagnostics 3.8 USB Floppy Disk Test
3-24 PORTEGE A100 Maintenance Manual (960-460)
Subtest 01 Sequential read
This subtest performs a Cyclic Redundancy Check (CRC) that continuously reads
all the tracks (track: 0 to 39/0 to 79) on a floppy disk.
The start track is specified at the start of the FDD test.
Subtest 02 Sequential read/write
This subtest continuously writes data pattern B5ADADh to all the tracks (track: 0
to 39/0 to 79) on a floppy disk. 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 (track: 0 to 39/0
to 79) on a floppy disk. The data is then read and compared to the original data.
Subtest 04 Write specified address
This subtest writes the data specified by an operator to a specified track, head and
address.
Subtest 05 Read specified address
This subtest reads data from a track, head and address specified by an operator.