Re: No slot clock

[pubpc1@library.ucla.edu]

wernst@cris.com (Warren "Llama" Ernst) wrote:
>Andrew Roughan <posty@iggy.triode.net.au> wrote:
>
>>
>>Tilghman Lesher <NO%lesh%SPAM%erjt%HERE@vuse.vanderbilt.edu> wrote:
>>> Just a quick question.  It mentions in the Faq that the NSC
>>> installs under one of the ROMs.  Now, I have an NSC for my
>>> IIe, and there seems to be a lack of instructions.
>>
>>> My question is:  under WHICH ROM?
>>
>>Either of the CD or EF Roms will do. The software should be able to
>>read it from both. If yours does not, I can give you mine which does.
>>
>>Just for interest, the Platinum //e has only one Rom, CF.
>
>If you have a Laser 128 (I know you don't, but I;m just waxing
>philosophic here), it fits under the ROM under the machine through the
>little trap door. Supposedly, the NSC could ALSO be used in early IBM
>XTs that didn't have a clock - just sticking it under any ROM chip and
>running the PC software made it work.
>
>I always thought it was rather amazing that it worked no matter where
>it was.
>
>Virtually,
>Warr
>former Beagle Bros tech support

Tell me about it, a relative recently sent me a "NetWork" brand XT
clone to upgrade.  I took the NSC from my dead IIe logic board in
the closet, plugged it into one of the row of ROM sockets, and
installed the PC software.  The software is on the opposite side
of the Apple software...it is a disk formatted one side Apple, one
side MS-DOS!  Neat!  Anyways, despite all these years gathering
dust, the NSC still works.

I also replaced the 8088 with a V20.  Those old XT's were terrible.
I thought the PC Transporter had slow disk access because of having
to communicate through the Apple slots, but surprisingly, the real
XT's MFM hard disk was SLOWER and the XT's floppy drive was MUCH
SLOWER.  No wonder AE claimed that the PCT ran rings around a real
XT.  In anycase, after seeing it in action, I can say that the
PC/XT was a piece of trash compared to a similarly equipped Apple
IIe.  An 8MHz Apple IIe with 512K of RAM and a 20MB SCSI hard drive
runs rings around a "Zipped" (ie. 10MHz V20'ed) XT with 640K of RAM
and a 20MB MFM hard disk.

BTW, does anyone know why 9 42256 chips make up a 256K bank in an
XT while only 8 42256 chips make up 256K in an Apple IIe?

-Scott G.