Re: Arduino virtual modem project

[Steve Nickolas <usotsuki@buric.co>]

On Tue, 5 Feb 2013, Payton Byrd wrote:

> Just thought I'd pass along some news from the Commodore world.  I've 
> been working on virtual modem implemented as an Arduino sketch.  I have 
> the communications basically nailed down and am about to start the Hayes 
> command parsing.  Was wondering if anyone is interested in this project. 
> Right now it only uses TTL level serial as it's wired up to the 
> Commodore userport.  Does the A2 line work ok with TTL level serial, or 
> would I need to add a UART to bring the levels up to RS232 standard?

Generally serial is implemented by a card containing a 6551, which I think 
is a UART.

-uso.