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- Working report
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- To: Craig
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- From: Jian
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- Subject: Jobs I have done during the last two weeks
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- Date: Mar 19, 93
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- 1. Evaluated the INSITE I235VM Floptical Drive for Falcon SCSI 2, and found
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- out: When format the drive, HDX can't write to the drive.
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- 2. I used the DB.prg to find out the reason why HDX can't write to the drive,
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- I got this: when write command finished the sending through the DMA bus,
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- the last thing to do was waiting for the status byte from the drive, but
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- the drive returned the 2 as a status byte, non zero byte return meaned the
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- writing was not successful. When I did the read command to the same sector,
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- the read was successful, and I found the stuffs I read back were differ from
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- the things I tried to write to that sector, so I concluded that the write
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- was indeed failed. Now I'm waiting for comprehensive menu of that drive from
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- the manufacture, so that I can learn more about the way how to talk to this
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- kind of drive, then I can find out the real reasons.
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- 3. Helped the testing group guys to find out the reason why they couldn't set
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- up the Falcon system for the testing.
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- 4. Now I read the Atari ACSI/DMA User Guide Menu so that I can understand more
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- about the those 'handshake' stuff between the DMA Controler and the periphe-
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- rals, this will help me to find those bugs that relate to the 'handshake'.
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- So far, I found those drives couldn't be used as the Falcon SCSI 2 were all
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- having the 'handshake' problem with the DMA port.
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