Hi folks.
Replacing an original 28X chip with a 28X2 chip, cos the original blew up in a lightning strike.
4MHz extremal resonator as per the 28X chip. 5v supply voltage.
Replacement X2 part programs fine, and runs fine, but the serial output won't go through a 202 level corrector - does anyone know if there should be anything different between the 28X and 28X2 parts that would stop that?
If I remove the 202 chip and tap directly into the serial from the 28X2 with a terminal program, I am getting the expected output, so the data is coming out of C.2 OK, but it won't pass through the level corrector.
I'm a bit stumped about this at the moment, cos it should just work if it is coming out of the X2 OK, but when you plug the output from the 202 into a laptop or anything else, all I get is garbage on the screen, not the wanted data.
Anyone got any ideas?
Replacing an original 28X chip with a 28X2 chip, cos the original blew up in a lightning strike.
4MHz extremal resonator as per the 28X chip. 5v supply voltage.
Replacement X2 part programs fine, and runs fine, but the serial output won't go through a 202 level corrector - does anyone know if there should be anything different between the 28X and 28X2 parts that would stop that?
If I remove the 202 chip and tap directly into the serial from the 28X2 with a terminal program, I am getting the expected output, so the data is coming out of C.2 OK, but it won't pass through the level corrector.
I'm a bit stumped about this at the moment, cos it should just work if it is coming out of the X2 OK, but when you plug the output from the 202 into a laptop or anything else, all I get is garbage on the screen, not the wanted data.
Anyone got any ideas?