[TI-H] Re: PIC16F84 Interfacing

[TI-H] Re: PIC16F84 Interfacing

• To: ti-hardware@lists.ticalc.org
• Subject: [TI-H] Re: PIC16F84 Interfacing
• From: Olle Hedman <oh@hem.passagen.se>
• Date: Thu, 09 Aug 2001 11:44:45 +0200
• In-Reply-To: <5.1.0.14.2.20010808234951.00b95dd0@alpha.arcride.edu.ar>
• References: <3B71E584.224AE56B@gmx.net> <5.1.0.14.2.20010807190159.00bee158@alpha.arcride.edu.ar>
• Reply-To: ti-hardware@lists.ticalc.org

At 04:56 2001-08-09, you wrote:

>the hardware is just the white wire connected to the RA0 port with a 3.9K
>resitance, and the red wire is the same but to RA1.
>Ground from the link port goes to ground of the circuit with a 1k resistor.
>
>Oh, it runs at 10mhz, but i think it works well at 4mhz.
>Here is the program in tigcc..

I understand this like you have them in serial to limit current.
Could be an idea to also put pullup resistors on the datalines.
Sounds like a plausible explanation why it works with vti and not a real calc.

///Olle

• [TI-H] Re: PIC16F84 Interfacing
• From: Carlos Becker <cjb@softhome.net>

• [TI-H] Re: PIC16F84 Interfacing
• From: docydoc <docydoc@gmx.net>
• [TI-H] PIC16F84 Interfacing
• From: Carlos Becker <cjb@softhome.net>
• [TI-H] Re: PIC16F84 Interfacing
• From: Carlos Becker <cjb@softhome.net>

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