Commodore 1571 - Page 38

1571/C128D ALIGNMENT/REPAIR TEST
VERSION 1.2.1
ALIGNMENT/REPAIR TEST OPTION SIX - DATA BUS WRITE CHECK
DATA BUS WRITE TEST OPTIONS
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WARNING — WARNING — WARNING — WARNING
DISKETTE MUST BE REMOVED FROM THE DRIVE BEFORE RUNNING THIS TEST
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* Press (M— ) - Return to Menu
Displays Alignment/Repair Test Main Menu
* Enter HEX Data ? FFO
* Input a two (2) Character HEX Code (00 - FF)
Followed by the Side Selection (0 or 1 )
Example .. FFO Entered = HEX FF on Side 0
The Data Bus Write Test verifies proper Data Bus Operation by setting the
Data Lines to a Known Condition. When a HEX Code is input the Status of
the Data Bus is Displayed in Binary Format, (0 = Low 1 = High).
Use a Scope to Verify the Measured Data with the Expected Data from the
Data Bus Write Chart.
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