Re: Apple IIc Plus questions

[david@wyvern.cs.uow.edu.au (David E A Wilson)]

spec@vax2.concordia.ca (Mitchell Spector) writes:
>- Is the 34-pin memory expansion connector on the motherboard compatible
>  with the one found on the late model (ROM 3 and 4) Apple IIc? It looks
>  the same, expect for a small set of male-pins beside it (separate from
>  the main connector and not parallel to it). 

Yes but... The Apple //c memory expansion card is to slow to work in the //c+.

>- The Plus seems to use the same technology as a Zip Chip 4 MHz, there's
>  even a TAG and DATA socket with 8K SRAMs installed. :) The machine 
>  automatically starts in 4 MHz mode, but I found it rather curious that
>  quite often it still seems to be operating at 1.024 MHz. Usually there
>  will be short bursts where it'll speed up, but then slow down again.

I think it slows down whenever the paddles are accessed.

>- I noticed I have to hold down the Open-Apple key longer when doing an
>  Apple-Control-Reset to warm boot (otherwise the machine just sees it
>  as a Control-Reset). My IIe's, IIc's, and IIgs's are not like this,
>  is this normal? Is it a side-affect of the built-in 3.5 drive?

I think so. A //gs needs longer than a //e - more intitialisation before
the test of the key.

>- How many external drives can be connected to it's Smartport? I assume
>  one Apple 3.5 and two Apple 5.25 (or a couple of UniDisk 3.5's).

Make that AND a couple of UniDisk 3.5 (before the 5.25 drives). I think a
total of 4 drives including the internal one. I could check my copy of
the tech ref.
-- 
David Wilson	Dept CompSci Uni Wollongong Australia	david@cs.uow.edu.au