On  5 Sep 97 at 8:47, Wolfgang Feller wrote:

> Hello Fred,
>
> I use the 16C74 in a datalogger that send the measured data to a PC
> via RS232. Here is the code fragment:
>
>
>         LIST P=16C74
>         include <p16c74.inc>
>
> clockrate       equ .3686400         ;define clock rate here
> baudrate        equ    .9600         ;define baud rate here
> tim0            equ      .48
> bdclk           equ      .24
> RESET_V                 EQU             0x0000                  ;
> Address of RESET Vector
>
>         ;RS232 **************
> #define _tx             PORTC,6 ; TXD UART
> #define _rx             PORTC,7 ; RXD UART
>
>
> txregx          equ     0x20    ;used as temp transmit register
> rcregx          equ     0x21    ;received char is saved here
>
>        org     RESET_V                 ; RESET vector location
> RESET       GOTO    START              ;
>
> START                               ; POWER_ON Reset (Beginning of
> program)
>
>                         ; INIT UART
>                         *********************************
>             bsf         STATUS, RP0
>             movlw       B'00100100'
>             movwf       TXSTA

Just curious here, do you have problems with BRGH = 1 ?
Microchip data says -
"Note: At the time of this printing, the asynchronous high speed mode
(BRGH is set) may experience a high rate of receive errors. It is
recommended to have the BRGH bit cleared. If you desire a higher baud
rate than BRGH=0 can support, refer to the device errata for
additional information."

MikeS
<mikesmith_oz@relaymail.net>