2-6
Diagnostics
Description of Tests
PCX-1 MABEL
This test performs a read-write of the MABEL registers and verifies that the data written can be
read back successfully.
A failure of this test may indicate a problem with a MABEL, associated circuitry or the PCX-1
Board.
PCX-1 SROM
The PCX-1 SROM test verifies that the PCX-1 MABELs can read the Sound ROMs by performing
a checksum of the Sound ROMs. The computed checksum is then compared to the stored
checksum.
A failure of this test indicates a problem with a Sound ROM (U15 or U16) or the PCX-1 Board.
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