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The tests are divided into 3 levels:
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The following describes the MCO diagnostics tests by level.
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Write and Read patterns in 7162 DAC Control Register.
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Walk 1s and 0s on VC2 Address Bus.
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Walk 1s and 0s on VC2 Data Bus
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Write complement of address in each SRAM address location
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Write and Read patterns in various 7162 DAC Internal Registers.
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Write and Read patterns in 7162 DAC Address Register
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Write and Read patterns in 7162 DAC Color Palette to verify the Color
Palette
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is being addressed correctly.
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Write and Read walking-bit patterns in 7162 DAC Color Palette to verify
the Color Palette is being addressed correctly.
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Write and Read patterns in 7162 DAC Color Palette to verify the Color
Palette Ram.
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Write and Read patterns in 7162 DAC Address Register
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Write a sequence of patterns to VC2 SRAM
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Write and Read a Walking 1s and Walking 0s pattern to VC2 internal
registers
This test verifies the complete pixel path from the MGras framebuffer
to the DAC inputs.
This test does the following:
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This verifies that the DCB interface, input and output swizzles, fifos,
muxes,
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VC2 timing, and DACs are all working correctly.
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Last Modified: 04:14pm PDT, August 25, 1997