HSER Problems

[mister_e]

use HSERIN [CHAR] and HSEROUT[CHAR] may solve few things. And you should DEFINE RCSTA as well... even if by default it's 2400 baud. Not sure how DEFINE LOADER_USED affect the whole thing.

try...

	DEFINE OSC 4
	DEFINE LOADER_USED 1

	DEFINE HSER_RCSTA 90h ' Enable serial port & continuous receive
	DEFINE HSER_TXSTA 20h ' Enable transmit, BRGH = 0
	DEFINE HSER_SPBRG 25  ' 2400 Baud @ 4MHz, 0.17%
	DEFINE HSER_CLROERR 1 ' Clear overflow automatically


	Char VAR BYTE
	LEDB var PORTD.1
	LEDG var PORTD.2
	LEDR VAR PORTD.4

main:
	GOSUB standby
	LOW LEDB
	HSEROUT [Char]
	HIGH LEDG
	PAUSE 5000
	LOW LEDG
	GOTO main

Standby:
	High ledb
	HSERIN [Char]
	RETURN

Error:
	END

What do you really want to do with the above? Learn something, or doing something useful?