;*** will leave a copy of the top bit in the N flag ? Then you
;*** can use branch if negative. -iwj
bt_fa_if1 totrackbit,7
- call advance_pointer
+ rcall advance_pointer
debug '5' ; write 's' to serial port
retfie_r
; if set, move to next buffer
bt_fa_if1 INDF2,7
- call advance_read_buffer
+ rcall advance_read_buffer
; if not set, move to next byte of samebuffer (increment totrack)
; (will be on bit 7 at this point anyway so no need to change totrackbit)