Q83/Q84 JTAG enable issues (IO not working)

Coding and general discussion relating to the compiler

Moderators: David Barker, Jerry Messina

Post Reply
Jerry Messina
Swordfish Developer
Posts: 1265
Joined: Fri Jan 30, 2009 6:27 pm
Location: US

Q83/Q84 JTAG enable issues (IO not working)

Post by Jerry Messina » Sat Jan 01, 2022 3:50 pm

There is an omission in the current Q83/Q84 device files that can cause problems with IO pins RA5, RB3, and RB5.

With these parts, JTAG defaults to ON and the above IO pins don't work normally.
To fix this, add a 'config JTAGEN=OFF' statement to your program.

I'll fix that (along with a few other Q83/84 memory map issues) in the next release.

Post Reply