I haven't fully gone through the below text, but here is what seems to 
be working for my set routine (B0-B6 are written with values 'earlier' 
in the program):

-------------------
SET_TIME				;write 7 byte time data
	MOVLW	B'10111110'		;multi bytes write mode.
	MOVWF	TIME_TX
	BSF	CLKRST
	CALL	TIME_WRITE
	CLRF	FSR0H
	MOVLW	TIME_TX_ADD		;the start address of send data
	MOVWF	FSR0L
	MOVLW	D'8'			;send 8 bytes at the same time.
	MOVWF	CLKCOUNT2
TW1
	MOVFF	INDF0,TIME_TX
	CALL	TIME_WRITE
	INCF	FSR0L,1
	DECFSZ	CLKCOUNT2,1
	GOTO	TW1
	BCF	CLKRST

	RETURN
-------------------
TIME_WRITE
	MOVLW	D'8'			;8 bits
	MOVWF	CLKCOUNT1
TLOP
	BCF	CLKIO			;the initial is low
	BCF	CLKCLK
	BTFSC	TIME_TX,0
	BSF	CLKIO
	RRCF	TIME_TX,1
	BSF	CLKCLK			;rise-edge to send data
	DECFSZ	CLKCOUNT1,1
	GOTO	TLOP
	BCF	CLKCLK			;recover
	RETURN
----------------------

But, when I read the 1302, I get mostly 0s with the occasional 1 second 
(yes, I've removed the breakpoints and let it run a while).

When it writes, all the values seem to be transferred to TIME_TX OK and 
I can see it 'scroll' right as the RRCFs are processed.

Also note the shortcut of "MOVFF INDF0,TIME_TX" which seems to work 
fine, as the value is being correctly transferred. FSR0L is incrementing 
correctly now as well.

I'll go through your suggestions, too.

Joe M.

ivp wrote:
>>  MOVLW TIME_RX_ADD                ;save bytes
>  > MOVWF FSR
> 
> As mentioned, specify FSR0L
> 
>>  MOVF TIME_RX,W
>>  MOVWF INDF
>>  INCF FSR,F
> 
> MOVFF  TIME_RX,POSTINC0
> 
>> ;**********************write a byte program*****************
>> ; TIME_WRITE_1
> <snip>
>>  BSF I_O
>>  RRF TIME_TX,F
> 
> Carry is indeterminate before that RRF
> 
> CLRC
> RRCF TIME_RX   (,F is not necessary)
> 
> or use RRNCF
> 
>>  BSF STATUS,C
>>  RRF TIME_RX,F
> 
> SETC
> RRCF TIME_RX
> 
> Sometimes pseudo-mnemonics such as CLRC and SETC are not in the
> include file. In that case make a couple of small macros and put them in
> a group, say, after the CONFIG statements
> 
> clrc     macro
>          bcf     status,0
>          endm
> 
> setc     macro
>          bsf     status,0
>          endm
> 
> wbr
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