AT&T PC 6300 - Test Description; Loading DMA Test; Loading DM a Test; Stand-Alone Motherboard Dma

MAINTENANCE
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STAND-ALONE MOTHERBOARD DMA
TEST DIAGNOSTICS
Test Description
Motherboard DMA Controller Test — Version X.X
Loading DMA Test
The DMA Test Diagnostics is loaded as follows:
2. ■ Turn the System Module power switch ON.
3. After the Resident Diagnostics have successfully been
completed, verify that the Operating System has been loaded.
4. Remove the MS-DOS System Diskette from the MFD Unit A.
5. Insert the DMA Stand-Alone Diskette into the MFD Unit A
and close the drive door.
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The DMA Test is a stand-alone program that tests the DMA chip J^.
on the Motherboard. The DMA controller test checks the ~
Motherboard DMA chip for multichannel operation. If the DMA
chip is faulty, the program will detect this problem.
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1. Insert the MS-DOS System Diskette into the MFD Unit A and
close the drive door.
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