Commodore 1571 - Page 45

C128/C128D 80 COLUMN TEST
VERSION 1.2.1
DESIGNED TO TEST
80 COLUMN MODE OF THE C128 OR C128D
REQUIRED EQUIPMENT: C128 OR C128D COMPUTER
1571 SINGLE DISK DRIVE (C128 ONLY)
40 COLUMN MONITOR OR TV SET
80 COLUMN RGB MONITOR (OPTIONAL)
VERSION 1.2 DIAGNOSTIC DISKETTE
The 80 Column Test is used to verify proper operation of the 80 Column
Video Controller and Local 80 Column Video RAM of the C128 or C128D
* All Displays Are In HEX Format
During Run Time, the tests being run are displayed and can be
Interpreted as ....
C128 - Memory Range - 4K Block, (1-4), of RAM Under Test
C128D - Memory Range - 16K Block, (1-4), of RAM Under Test
Address - Current Address in Block Being Tested
Block
Data
R/W
Write - Writes
- Current Data Being Read or Written
- Current Operation (Read/Write) Being Executed
Displayed Data to Displayed Address
Block Copy
- Copies Data, (Reads/Writes), at
Displayed Address
C128
- U22
8563
Pass/Fail -
Result of
80 Column Video Chip Test
C128D
- U22
8568
Pass/Fail - Result of
80 Column Video Chip Test
C128
- U23 4416 Pass/Fail - Result
of
4x16 RAM Chip Test
C128D
- U23 4464
Pass/Fail -
Result of
4x64 RAM Chip Test
C128 - U25
4416 Pass/Fail -
Result of
4x16 RAM Chip Test
C128D
- U25 4464
Pass/Fail -
Result of
4x64 RAM Chip Test
PASS xxxx
- Number of Completed Passes Run
TIME xx:xx:xx - Total Run Time of 80 Column Test
* Any IC Flagged with a Fail Message must be replaced
* If an 80 Column RGB Monitor is connected, the ASCII Character
of the Data being executed will be displayed.
* The System Must be Powered Down to Exit This Test
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