Date   : Thu, 21 Sep 1989 01:25:28 GMT
From   : hpda!athertn!paul@ucbvax.Berkeley.EDU (Paul Sander)
Subject: Interrups and CP/M on Apple ][

I have a "CP/M Card" made by Advanced Logic Systems installed slot 4 in my
Apple ][ Plus, and a Super Serial Card installed in slot 2.  I'd like to run
a telecommunication program under DOS or ProDOS with the SSC's interrupts
enabled, but find that turning on interrupts prevents CP/M from booting.
My guess is that the SSC is generating an inturrupt either when reset or when
CP/M initializes it somehow.  Does anyone know of a way to make the two
coexist, short of soldering on a toggle switch in parallel with the DIP
switch (for my particular system, it's too much of a pain to unstack all the
stuff that lives on top of the Apple, open it, take the card out, flip the
switch, and reassemble).

I do not have any source code for the CP/M BIOS or bootup code.

Many thanks in advance for the help.
-- 
Paul Sander        (408) 734-9822       | If a machine is powerful enough
paul@Atherton.COM                       | to have a DWIM button, why bother
{decwrl,sun,pyramid}!athertn!paul       | with the button?  -- Eric Black