In SX Microcontrollers, SX/B Compiler and SX-Key Tool, kd5dhu wrote:

[2]
Try the attached program, it works on the SX52 Proto Board (discontinued, Parallax or one of their distributors my still have some) or the SX48 Proto Board.

You will need to do the following:

1. Install a 20MHz resonator in socket X2

2. Make up a DB9 connector with PIN 2 (RS-232) to RA.0, (RS-232 PIN 5) to VSS on the Proto Board

3. Would be a good idea to add a 1M resistor across the resonator. Easily done by taking a 1/4 watt 1M resistor, trim the leads to .25" and insert into X1, this is optional.

4. Open the program and change:

[b]DEVICE SX52, OSCXT2, BOR42[/b]

to

[b]DEVICE SX48, OSCXT2, BOR42[/b]

I use this 'template' as a starting point for most of my projects and I know it works.

Hope this helps,
[/2]

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