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Re: -Hard-Drives w/vulcan?

Bill Garber wrote:
"Michael J. Mahon" <mjmahon@aol.com> wrote in message vLCdnRgRptZWa-_eRVn-pg@comcast.com">news:vLCdnRgRptZWa-_eRVn-pg@comcast.com... 



Yowch!  Try switching to a monospaced font when attempting columns--
those are pretty mangled.



Any proportional font should do it. Courier New is what I use.


Actually, _non_-proportional, right?  ;-)


Still, the info is there...and a little disappointing, since there's a
PAL that will make reverse engineering much harder.



PAL? a problem? and you can't write to MS-DOS disks on a IIgs
either I guess. Didn't I mention that we've already converted
PAL to GAL for the Rev"C" SCSI card? Oops, don't think so. :o)


A PAL, whose internal logic must be determined the hard way,
instead of looking it up in a databook, is what I meant.


Chip 1 is an 'LS86 (not B6).  All pretty standard stuff except for the
PAL, but an interesting mix of logic families!  The card must be gating
and buffering some signals while trying to delay them as little as
possible.



Thought that kind of looked like a B, and not 8.  :o)


Yeah, I use 74LSB6's all the time in my designs...  ;-)

-michael

Music synthesis for 8-bit Apple II's!
Home page:  http://members.aol.com/MJMahon/

"The wastebasket is our most important design
tool--and it is seriously underused."