🚀 go-pugleaf

In <1992Sep4.132936@IASTATE.EDU> dboone@IASTATE.EDU (David L Boone) writes:

>In article <1992Sep4.170445.18157@eng.ufl.edu>, kent@wonderhog.eng.ufl.edu (Kent
>Phelps) writes:
>> There are two different IDE PAL's for the 286lp.  I believe it U305.  The
>> chip has a ZDS part number screened right on it.  The old one is 444-xxxx-00,
>> the new one is 444-xxxx-01.  I am sorry I can't remember what the xxxx is but
>> you can look inside your machine to find out.  You also may have to change
>> the position of J303.
>> 
>> Good Luck
>> --
>>     Kent Phelps         |         Internet:   kent@eng.ufl.edu
>> Digital Design Facility |         Phone:      904-392-2464
>> "We will vote for a gerbil if necessary to get rid of George Bush and 
>> Dan Quayle
>> 				Ms. Magazine

>The number of the desired PPAL is 444-640-1 (or 444-0640-01, depending on 
>where you see it).  It is located on the expansion socket backplane board.

This is EXACTLY the solution!

Thankfully, our Zenith service folks at University Computing Services
pointed me in the right direction.  I indeed had to upgrade the PAL on
the backplane board from a 444-640-00 to a 444-640-00-1. That, in
addition to moving the jumper from pins 1-2 at U104 to pins 2-3 got
the drive working.

Of course, all of this was outlined in my "Zenith Professional Desktop
Computer Owner's Manual" (part no 595-4251) :-)  :-)

Now, if I could only upgrade the combined parallel/serial IO chip
(82C605) to get FIFO'ed UARTS for my spiffy new 14.4Kb modem, I'd be
THRILLED to death...and would have successfully brought this 4 year
old computer into the 90's.  (It has been kicking and screaming all
the way, of course.)

My thanks to all!

--
michael regoli
mr@cica.indiana.edu
regoli@iubacs.BITNET
..{ames, rutgers}!iuvax!cica!mr