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Hardware Diagnostics
This system does not support the 1.2 MB format type.
FLOPPY DISK TEST (FDD) Error Log
Status
01
02
03
04
06
08
09
10
20
40
- 01. SEQUENTIAL ADDRESS READ subtest reads data from all tracks continuously
on a diskette.
- 02. RANDOM ADDRESS/DATA W/R/C subtest writes random data to random
addresses on all tracks on the diskette. The data is then read and compared to the
original data.
❖
05. PRINTER TEST checks the operation of the printer port.
PRINTER TEST (PRT) Error Log
Status
01
- 01. Print Ripple Pattern subtest prints characters for codes 20h through 7Eh line-by-
line while shifting one character to the left at the beginning of each new line. See
below for screen example.
Error name
BAD COMMAND ERROR
ADDRESS MARK NOT FOUND
WRITE PROTECTED
RECORD NOT FOUND
MEDIA CHANGE LINE ERROR
DMA OVERRUN ERROR
DMA BOUNDARY ERROR
CRC ERROR
FDC ERROR
SEEK ERROR
Error name
TIME OUT
HW Diagnostics Program Main Menu
Meaning
Bad command error
The address mark has not been
found
Floppy disk is write-protected
The record has not been found
The media change line is bad
DMA OVERRUN occurred
DMA BOUDARY occurred
CRC check error
FDC error
Seek error
Meaning
Time out of printer control
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