uart: Added a comment

As to why somehow we don'r write a value in the interupt
clearing logic

Signed-off-by: Michel Pollet <buserror@gmail.com>

diff --git a/simavr/sim/avr_uart.c b/simavr/sim/avr_uart.c
index b01ebe1..3193575 100644 (file)
--- a/simavr/sim/avr_uart.c
+++ b/simavr/sim/avr_uart.c
@@ -161,6 +161,9 @@ static void avr_uart_write(struct avr_t * avr, avr_io_addr_t addr, uint8_t v, vo
                uint8_t udre = avr_regbit_get(avr, p->udrc.raised);
                uint8_t txc = avr_regbit_get(avr, p->txc.raised);
 
+               // no need to write this value in here, only the
+               // interupt flags needs clearing!
+               // avr_core_watch_write(avr, addr, v);
 
                avr_clear_interupt_if(avr, &p->udrc, udre);
                avr_clear_interupt_if(avr, &p->txc, txc);