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-
- README.DOC for CHNLTST.PRG
- ==========================
-
- This test allows you to have Sound DMA, Sparrow SCSI DMA, BLiTTER
- transfers, and IDE spin-up spin-down all going at the same time.
-
- Sound DMA
- ---------
- 0x2000 bytes of data are recorded from the screen base address
- (stored at $ffff8201, $ffff8203, $ffff820d), and played back at a
- location 0x2000 bytes passed the screen base address.
-
- There are 2 modes of record and play back. One is 2-channel loop
- back through RASCAL. The other is 10-channel loop back through
- the loop back connector.
-
-
- Sparrow SCSI DMA
- ----------------
- A write-read-verify test is performed on the last 254 sectors of
- the SCSI drive (i.e. the test WILL trash the last 254 sectors of
- the drive.)
-
-
- BLiTTER transfers
- -----------------
- 256 words of data are moved from one buffer to another. Both
- buffers are allocated at run time. The source buffer contains
- the repeating test pattern of 0x00 through 0xff. After the transfer,
- the contents of the buffers are compared to ensure the transfer was
- successful.
-
- If Sparrow SCSI DMA is enabled, the BLiTTER transfer will occur after
- the SCSI DMA has started and before the SCSI interrupt is polled.
-
-
- IDE spin-up spin-down
- ---------------------
- When the program starts, it configures the IDE drive to spin down
- every 60 seconds if there is no IDE activity. Then, every 62 seconds,
- the program will spin the drive back up. (i.e. If there is no IDE
- activity for 60 sec., the drive will spin itself down, then 2 seconds
- later, the program will send a command to spin it back up.
-
- If Sparrow SCSI DMA is enabled, the IDE spin-up will occur after the
- SCSI DMA has started and before the SCSI interrupt is polled.
-
-
-
- Please note that:
- -----------------
- 1) Sparrow must be running in 16MHz.
- 2) At start up, every test is enabled. Each one of them can be
- disabled individually.
- 3) If an error occurred, the test that failed will be disabled,
- it can be re-enabled by hitting the key that activates it.
-
-
-
- List of commands:
- -----------------
-
- Key Action
- ===============================================================
-
- ESC Quit the program
- h List the commands
-
- Sound controls:
- r Sound looping through RASCAL (2 tracks)
- o Sound looping through loop-back connector (10 tracks)
- d Disable sound test
- e Enable sound test
-
- BLiTTER controls:
- n Disable BLiTTER test
- b Enable BLiTTER test
-
- SCSI Read-Write controls:
- q Disable SCSI Read-Write test
- w Enable SCSI Read-Write test
-
- IDE spin-down spin-up controls:
- s Disable the IDE drive from spinning up
- u Enable the IDE drive to spin up
-
-
-
-