Actually, I already have code for up to 8 bit-banged UARTS (I published the
receiver half of it on the piclist.com). This interrupt-driver code works by
doing 'vertical' operations on all 8 UARTS at once.

I can currently get 9600 baud on a 20Mhz PIC16F chip (5 MIPS), so I feel
this code will let me go up to 115,200 on the SX (up to 75 MIPS).

Bob Ammerman
RAm Systems

----- Original Message -----
From: "pearl62" <pearlsixtytwo@HOTMAIL.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, December 02, 2002 3:52 PM
Subject: Re: [SX]: What do I need?


> Hi Bob,
>
> How many channels do you need? Any limitations on clock frequency? What
type
> of UARTS (with or without handshake, buffers, etc.)?
>
> Cheers,
> Stephen
>
> ----- Original Message -----
> From: "Bob Ammerman" <rammerman@ADELPHIA.NET>
> To: <PICLIST@MITVMA.MIT.EDU>
> Sent: Monday, December 02, 2002 8:50 AM
> Subject: [SX]: What do I need?
>
>
> > Believe it or not I am thinking of developing a project on an SX48. I
have
> a
> > need for multiple UARTs at high baud rates, and you just can't do that
on
> a
> > PIC. The only dual UART PICs are high pin count monsters, and that isn't
> > very appealing either. PICs, of course, don't have the speed to do it by
> > bit-banging, but the SX certainly does.
> >
> > So, just what do I need to:
> >
> > 1: Do in-circuit programming
> > 2: Do in-circuit debugging
> > 3: Develop in assembly language
> >
> > Finally,
> >
> > are there any assembler choices that would allow me to use mChip style
> > assembly mnemonics to develop for the SX?
> >
> > Bob Ammerman
> > RAm Systems
> >
> > --
> > http://www.piclist.com hint: To leave the PICList
> > mailto:piclist-unsubscribe-request@mitvma.mit.edu
> >
>
> --
> http://www.piclist.com hint: To leave the PICList
> mailto:piclist-unsubscribe-request@mitvma.mit.edu
>
>

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