30 Jan
2013
30 Jan
'13
6:31 p.m.
On Wed, Jan 30, 2013, Glen Slick wrote:
Not the exact manual you were looking for but might
have the same
information. This scanned copy includes pages Appendix A-1 through
A-36.
Thanks Glen that's great, must have been a few minor corrections to Appendix A
in this update to the original service manual.
I was interested to read about the differences between the 9121 and 82901 commands, eg the
9121 supports a superset of the 82901 commands and so should be fully backwards
compatible. One difference I have noted is using HPdir the 9121 appears to faster than the
82901, in that on a fast PC HPdir has to be slowed down to work successfully with the
82901 (eg by enabling logging) and works fine with the 9121, and on a slow PC both drives
work fine with no attempts to further slow down the program. I've fed this back to the
program author for further analysis.
I can try and dump the drive firmware if anyone is interested in doing a detailed
comparison.
Regards,
John