Technical data

A.2.24 Graphics System Test Overview - LCG (Model 60 Only)
The LCG system test sets up the graphics modules to execute drawing
commands from the graphics FIFO and clip list command buffers. The first
pass draws a checkerboard on the screen by copying a "box" from main memory
to each of the 24 box locations in the checkerboard, inverting every other box.
Subsequent passes copy each box from the next box, and the last box from the
first box on each pass. After 50 passes, the pattern is checked one byte at a
time. The first error is flagged and testing stops.
A.2.25 Graphics System Test Overview - SPXg and SPXgt Modules
(Model 60 Only)
Note
The 2D graphics and 3D graphics system test displays are significantly
different.
The first display of the 3D graphics system test consists of gray-shaded
diagonal bars drawn continuously between the four sides of the screen. The
dynamic diagonal bar display continues to fill the screen for approximately 30
seconds. The screen is then cleared and the device status display begins.
The 2D graphics checkerboard pattern does not appear at the bottom of the 3D
graphics system test display.
A.2.26 LCG System Test Error Codes (Model 60 Only)
The following table lists possible error codes that can be generated by the LCG
system test:
Table A–29 LCG System Test Error Codes
Error Description
F001 Initialize the test module, set up communication links with the monitor
F002 MAP VRAM 1 memory for checkerboard
F003 MAP LUT in VRAM 1 0x21800000
F004 MAP VRAM 2 memory for checkerboard
(continued on next page)
A–68 Interpreting Error Codes