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6.3 Outline of Diagnostics Test
computer.
Diagnostics Menu
This is the menu for the testing procedures.
The menu you obtained may differ slightly depending on the
devices installed in your computer system.
If you choose:
(1) MAIN BOARD
Test the Main Board.
(2) FLOPPY DISK DRIVE
Test the floppy disk drive connected to the system.
(3) KEYBOARD
Test the keyboard.
(4) COLOR/GRAPHICS VIDEO
Test the color/graphic controller and display, connected
to the system.
(5) 1 SERIAL PORT
Test the RS-232C serial port of the system.
(6) 1 PRINTER PORT
Test the printer port.
(7) MEMORY
Test the base memory.
(The number of KB or will chan-
ge depending on the configuration of your system.) and
tests the expanded memory. (The number of KB will
change depending on the configuration of your system.)
6-3
6.4 Diagnostics Description
6.4.1
Main Board Test
Check reading and writing of the
timer #0 of the PIT (Programma-
ble Interval Timer). Set!Ne initiali-
zing value on the timers #0 and ve- |
rify that counting downs functio-
|
ning properly after a fixe period
of time has elapsed.
The timer #1 is not used as a re-
fresh counter for the DRAM and
does not need to be checked.
Check reading and writing of the
page register.
Bytes I/O R/W test
Data: 00H, 55H, AAH, FFH.
Check reading and writing of the
address register of the
DMAC #0
and of the word count register of
the DMAC #0
Data: 00H, 55H, AAH, FFH
I ing Writing Dia-
| gnostics and
Counter Test
Page Register
Reading/Writing
Diagnostics
DMA Controller
Reading/Writing
Diagnostics
PIC Reading/
Check reading and writing of the
Writing
#0 IMR (Interrupt Mask Register)
Diagnostics and
of the PIC (Programmable Inter-
Interrupt Test
rupt Controller). Verifies whether a
PIC #0 interrupt test is carried out
properly through a TIMER inter-
rupt test
Confirm the data in real time clock |
is within the proper range.
|
| RTC Diagnostics
PEND
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Perform the byte reading/writing
test using data patterns OOH, 55H, |
AAH, FFH. This applies to load ad- |
dresses from 00000H to top of the |
Procedure
Press any key to recall a scanning |
code, which is convertéd to a
code. Confirm that the code cor-
responds to the denotation show
CS 55 815
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