Floppy Disk Drives And Controller Check - Epson PC AX Technical Manual

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DIAGRAMS ARD REFERENCE MATERIALS
+-----------------------------------------------------------------+
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: SEQUENTIAL SEEK CHECK :
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: Current track is xxxx :
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+-----------------------------------------------------------------+
(The xxxx represents the number of the sought cylinder.)
The program displays an error message if the Floppy Disk
Controller (FDC) assumes one of the following status es:
1. The FDC main status remains BUSY.
2.
The FDC is not in Output Ready status when the program
going to output a command.
3. The FDC is not in Input Ready status when the program going
to input status.
+-----------------------------------------------------------------+
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: FLOPPY DISK DRIVE(S)
AND
CONTROLLER CHECK :
: Error code
=
601 :
: FLOPPY DISK CONTROLLER ERROR :
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+-----------------------------------------------------------------+
The program displays an errormessage also when the seek
operation of the FDC after performing head seek is not normally
terminated.
+-----------------------------------------------------------------+
FLOPPY DISK DRIVE(S)
AND
CONTROLLER CHECK
Error code
=
602
SEQUENTIAL SEEK ERROR
TRACK -- xx
SIDE --- Y
+-----------------------------------------------------------------+
(xx represents the error cylinder number and y representsthe error
head number.)
2) Random Seek Check
The random seek checking procedure is identical to that of
Item 1), except for the procedure that the seek operation is
performed in randominstead of sequentially.
The messages are also identical except that "SEQUENTIAL SEEK"
is replaced by "RANDOM SEEK". (Error code
=
603)
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