Toshiba Tecra A2-S139 Maintenance Manual - Page 132
Tests and Diagnostics, Floppy Disk Test
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3 Tests and Diagnostics 3.9 Floppy Disk Test Subtest 01 Subtest 02 Subtest 03 Subtest 04 Subtest 05 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. Refer to 2 in this chapter. 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. 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. Write specified address This subtest writes the data specified by an operator to a place pointed by track, head, and address. Read specified address This subtest reads data from a place pointed by track, head, and address specified by an operator. 3-24 Satellite A50/TECRA A2 Maintenance Manual (960-478)