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From: KEN@JPL-VLSI.ARPA
Newsgroups: net.micro.apple
Subject: Apple //c questions
Message-ID: <389@sri-arpa.UUCP>
Date: Tue, 24-Jul-84 21:56:00 EDT
Article-I.D.: sri-arpa.389
Posted: Tue Jul 24 21:56:00 1984
Date-Received: Sat, 28-Jul-84 20:18:37 EDT
Lines: 25

From:  Ken Adelman 

	My roommate just purchased a //c (I have a II+) and I have some
random questions not found in documentation I have been able to find:

1) Does anyone know the pinout on the joystick/paddle port? I want to
   interface a normal apple II type joystick.
2) Does anyone know if/how to interface an apple disk ][ to the apple //c?
   I know that the connector is different, but is it possable to make a
   cable to connect the two. I have an spare disk ][ I am not using.
3) Does anyone know the memory address used to toggle the $400-$7ff bank
   of ram back and forth so I can write the screen directly?
4) Does anyone know the pinout on the serial ports? I don't want to spend
   what apple wants for a $1 connector. What about the interface itself? I
   would assume that apple used the 6551 ACIA. Does anyone know where they
   are mapped (both modem and printer)? How does apple expect the printer
   to handshake (^S/^Q or 5 wire serial)?

I am trying to modify a VT52/H19 emulator to work on the //c. Answers
to 3 & 4 may be rewarded with a beta-test copy.

						-Ken Adelman
						 Caltech
						 (KEN@JPL-VLSI.APA)
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