In SX Microcontrollers, SX/B Compiler and SX-Key Tool, tdg8934 wrote:

Metron9,

Keep in mind that the info below only refers to the second circuit built on a separate solderless breadboard as described earlier. I have not troubleshooted my PDB yet. More to come on this.

However, I went through your code and changed the lines of PortC_8255 to PortA_8255 and it worked. I should have hooked up all of the LEDs for your program. 

But I also noticed that I can use your 50 MHz Device lines and it does work (sort of) in yours and my program. What I did notice is that when I use the 50 MHz settings and turn power off and on quickly a few times it does not always turn the LED's on. It's like it misses the timing and it stays off. 

BUT...if the device lines are set to 4 MHz, I have no problem with either program when power is switched on and off quickly a few times. All the correct LED's come on as they should from the program code. 

All the wires I am using are about 1-3" long on average with the longest being maybe 6". 

 

NOW: My guess is that as far as the PDB goes, it will most likely be an issue with the SX-28 socket. I will still have to test this and find out for sure. More to come. 

Good work !!!!

Comments??

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