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98770 Diagnostics 5-5
Graphics Tests
c:§:J .
C!!D .
Full Graphics Raster in Different Colors
Press any key from
c:§:J
through
C!!D :
a colored graphics raster will appear. Refer to
Chapter 6. page 6-5. for color intensity adjustments.
Here is a summary of the keys and the color each key produces.
Key
i
Color
c:§:J
White
OU
Red
~
Yellow
CJiiJ
Green
DiD
Cyan
C§J
Blue
DiU
Magenta
C!!D
Black
The test checks the graphics memory and color assignment logic on the A32 assembly.
CI)
Graphics Memory Test
Press
CI) ;
the three graphics memories on the A32 assembly are tested.
Memory errors are dispiayed on the following format
Example
X Dot
Location
Y
Dot
Location
Memory
Number
Actual Data
Expected Data
GRAPHICS X:OOOOO
; Y:OOOOO ; MEM#:OOOOO
HAS 000000 NOT 000000
The 98770A Service Manual shows how to isolate this error message to a single memory chip.
CTI
Graphics Cursors
Press
CTI ;
initially the small horizontal line cursor (-) appears. Press
CTI
again and the
full screen cross-hair cursor appears. Press
CTI
once more to view the small cross-hair
cursor.
This test checks the graphics cursor logic on the A13, A33, A53, or A54 assembly.
~
- OQ
Graphics Cursor Color
Press any key from
~
through
OQ
to change the color of the graphics cursor. Here is a
summary of the keys and the color cursor each key produces:
Key
Color
~
White
OU
Red
OQ
Yellow
OLJ
Green
QQ
Cyan
OU
Blue
CJQ
Magenta
OQ
Black
CD
Grid
Press
CD ;
a grid is produced, based on the present position of the graphics cursor.
I
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