As well as the other comments

After the ' banksel TXREG' you will be in BANK0, TXSTA is in BANK1 so I 
would change your call to DEBOUNCE for banksel TXSTA, I personally 
always restore my calls to BANK0 so I would add a BANKSEL 0 (might be 
wrong syntax, I use a macro) before returning

Good Luck

Dave


Jan-Erik Soderholm wrote:
> Any special reason to enable/disable the USART sender
> for each character ?
>
> Jan-Erik.
>
> alan smith wrote:
>   
>> So I really havent done much with 16F serial, and the 18F stuff I can get to work flawlessy (so far at least), so I am having a small issue with this code on the '913
>>    
>>    
>>   To preface, it works...almost.  I have a string defined such as it uses a jump table to index into it, and has a null on the end to terminate.  I can address into it, grab the character and it sends it out, so the USART is setup properly, and single stepping it displays each character, so far so good.
>>    
>>   Now, when I do it full speed....I lose characters.  I'm thinking...ok....the buffer isnt clearing out by the time I go to get the next character and send it.  Cheating....add delay.  But doesnt fully explain things. 
>>    
>>   So here is the code that sends the character, held in Wreg
>>    
>>   TX_CHARACTER
>>       banksel     TXSTA
>>       bsf            TXSTA,TXEN
>>       banksel     TXREG
>>       movwf       TXREG
>>  _txCharLoop
>>       call           DEBOUNCE
>>       btfsc         TXSTA,TRMT     ; check buffer, wait till empty (1=empty)
>>       goto         _txCharLoop
>>       bcf           TXSTA,TXEN
>>  return
>>
>>    
>>   This code is the one that works yet drops characters.  If I pull out the debounce call, it breaks.  I was thinking that checking the TRMT bit should do the job without the delay but doesn't appear to.  I was thinking banksel needs to be set prior to looking at the TRMT bit, but adding that breaks it.  So I can break it...meaning that it might send the first character or just a '.'  It has to be something obvious, but what I've play with doesnt seem to help.
>>    
>>   I am running a 4MHz xtal, with the BRG and SPRGH settings for 9600baud, 8/n (if that was wrong then i would imagine I wouldnt be getting out good data at all).
>>    
>>   Any thoughts?
>>
>>        
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