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Select option 5 from the menu to
start
this test. First the program checks
the selected drive type; if the drive is a
360KB
drive, you see these messages:
Drive d is a 360KB drive.
DISK CHANGE is not allowed with this type of drive.
Press ENTER to return to the menu.
d represents the name of the drive you selected.
When you run the test for a 1.2MB or 720KB
(3Y2”)
drive, you see this
prompt:
Remove the disk from drive d.
Release the disk drive lock, and remove the disk. You see:
Re-insert the disk into drive d.
Re-insert the diskette and secure the lock. If no errors occur, then the
menu
reappears. An error occurs if the drive is malfunctioning, or if you do not
remove or replace the diskette within a certain time.
Run all above checks
To run all the tests on the menu in sequence, press 6 and then
Enter.
When you choose this option, all checks for the floppy disk drive(s) and
controller are performed automatically in sequential order. Although you do
not start each test, you must still supply the appropriate responses to progress
from one test to the next.
Math Coprocessor Check (80287)
Use this option to check the operation of the 80287 math coprocessor if
you have one installed in your computer. To check the math coprocessor,
select option 7 from the DEVICE LIST.
Before running any tests, the computer checks the settings in CMOS
RAM to ensure that a coprocessor is installed. If the coprocessor is missing,
or if you have not changed the setting in CMOS RAM with the Setup
option, an error occurs and the test ends.
If the
coprocessor is installed, the program
then runs a series of checks
on the precision with which the coprocessor performs calculations and han-
dles exceptions.
4-20
Diagnostics