Hardware Diagnostics
Hardware Diagnostics Program
113
FLOPPY DISK TEST (FDD) Error Log
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05. PRINTER TEST checks the operation of the printer port.
- 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.
- PRINTER TEST (PRT) Error Log 01.
Status
Error name
Meaning
01
BAD COMMAND ERROR
Bad command error
02
ADDRESS MARK NOT FOUND
The address mark has not been
found
03
WRITE PROTECTED
Floppy disk is write-protected
04
RECORD NOT FOUND
The record has not been found
06
MEDIA CHANGE LINE ERROR
The media change line is bad
08
DMA OVERRUN ERROR
DMA OVERRUN occurred
09
DMA BOUNDARY ERROR
DMA BOUDARY occurred
10
CRC ERROR
CRC check error
20
FDC ERROR
FDC error
FF
DATA COMPARE ERROR
Data comparing error
Status
Error name
Meaning
01
TIME OUT
Time out of printer control