On 08/19/2016 09:24 AM, j...@cimmeri.com wrote: > Where might I find information on how to form SCSI command data > blocks so as to try the above commands? I sent just an "01" to the > TEAC MT-2ST, and it did rewind.. but did not react to any of the > other above commands just by sending single bytes. > > Oddly, the OnStream drive did *not* accept an 01 command. > > Thank you- -John
John, what's your working OS platform? For fooling with SCSI, the ASPI interface of MS-DOS is pretty straightforward--and easy to use. http://ftp.isu.edu.tw/pub/Hardware/ADAPTEC/adaptec/aspi_dos.txt ..and if you goof up, just hit the RESET button and you're back in business in a few seconds. A CDB's a CDB, so whatever you learn on DOS can easily be transfered to other OS interfaces (SPTI, SG, CAM, etc.). As far as tape-drive specific commands, there's always an ANSI T10 document, but that's like trying to learn about parking regulations from a university law library--it's probably all there, but you'll have to plow your way through a lot of stuff. FWIW, T10 doesn't refer to the things as "tape drives", but "sequential access devices". Here's a T10 draft: http://hackipedia.org/Hardware/SCSI/Stream%20Commands/SCSI-3%20Stream%20Commands.pdf By far and away, the best place to learn practical SCSI interfacing is from vendor's manuals themselves. One I found particularly useful was the HP 35470 DDS drive OEM product manual. Very clear writing style. Bitsavers is full of product manuals detailing exactly what and how a product supports. --Chuck
