hi, i have been working on a parallel eeprom programmer that connects to my
pc via RS232
my setup:

PC --> MAX3232 --> PIC16f877 --> EEPROM

testing setup: whenever the pic receives a byte, it triggers an interrupt,
which outputs the byte on porta/porte, and RCSTA on portb.

I need 9-bit transmission for this to work. however, i cant get it to work
properly.

this is what happens.

PIC set to 9-bit reception:
PC transmits byte with 9th bit low - PIC detects framing error, but data is
correct
PC transmits byte with 9th bit high - no framing error, data correct
PC transmits byte with no 9th bit - no framing error, data correct

PIC set to 8 bit reception:
PC transmits byte with 9th bit high - no framing error, data correct
PC transmits byte with 9th bit low - appears as if receive cycle never
completes, and interrupt is not triggered. all data bits are at 1, however,
FERR bit is low.
PC transmits byte with no 9th bit - no framing error, data correct (AT LAST,
something working right)

here are the src files used(one is c++(linux), the other MPASM):

Set up for 8-bit reception(9-bit is set by setting bit 6 of rcsta):
http://www.nabble.com/file/p12329072/eeprom.asm eeprom.asm 
(interrupt routine is right at the bottom)


set up for 8-bit transmission:
http://www.nabble.com/file/p12329072/eeprom.cxx eeprom.cxx 

I have the system set up, with the PIC showing the RCREG data on porta
0:5/porte 0:1), and showing the RCSTA register on portb.
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