At 02:57 PM 7/3/97 +0100, you wrote:
>Hi,
>I want to connect a MAC with a 16C74 via a serial line. I intend to transmit
>only some ascii sequences through the line. But I'm not a Mac user and so I
>have some questions.
>* Which software (terminal progam) can I use to transmit the ascii sequences?

You may try Chipmunk a free Basic Interpreter?

>* I want to use only two lines (TxD and GND) between the Mac and the PIC. Ok?
>* Can I use the same schematic like in AN 547 (RS-232 interface)?

It is very easy to connect to MAC serial port, only one resistor
is required (from Mac to PIC).

As MAC serial line drivers are differential you have the option to
choose the polarity. (Must be be correct)

I wrote some PIC software drivers for 57.6 kbaud for PIC16C84 at
4MHz (Software Serial), for C74 you can use the hardware UART too.

Francis Deck has some Mac <> PIC schematics on his website and
some software too (for PIC's at 3.68MHz)

antti




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