sort of ability to use debug buffer in nmra output routines

diff --git a/detpic/nmra-stream.asm b/detpic/nmra-stream.asm
index 9637e76e9ee412553ce88be4d9316b905a0f1002..14d87755a5a7b35d45ad2f14aa4560dd4d3d87e9 100644 (file)
--- a/detpic/nmra-stream.asm
+++ b/detpic/nmra-stream.asm
@@ -79,6 +79,10 @@ macros
 
        ifndef  SLOW_VERSION
 debug macro debugvalue
+ ; uncomment this to get copious stuff in the debug buffer
+ ; NB that strictly this does not work because debugbyte messes with
+ ; FSR0[LH] and if we interrupt debugbyte we will trash FSR0
+ ;     Dl      debugvalue
        endm
        endif
 
@@ -235,7 +239,10 @@ nmra_serialrx_intrl @
 
        ; serial_receive:
 
-;      debug   'h'     ; write 'h' to serial port
+       debug   'h'     ; write 'h' to serial port
+       Df      fromserial
+       Df      totrack
+
        bt_fa_if1 RCSTA,FERR            ; if FERR set (= framing error), then panic
        goto    panic_ferr
        bt_fa_if1 RCSTA,OERR            ; if OERR set (= overrun error), then panic
@@ -244,18 +251,18 @@ nmra_serialrx_intrl @
        mov_ff  fromserial,FSR0L        ; set low byte of INDF0 pointer
        mov_lw  bufferpage
        mov_wfa FSR0H                   ; set high byte of INDF0 pointer
-;      debug   '1'
+       debug   '1'
        mov_fw  RCREG                   ; get received byte
        mov_wf  INDF0                   ; copy to received register
 
 ; check whether bit 7 is clear.
 ; If so, move to next buffer (or process other kind of message)
        bra_nn  end_message             ; (STATUS N still from mov_fw RCREG)
-;      debug   '3'
+       debug   '3'
 
 ; If not, move to next byte
        inc_fa  fromserial              ; advance fromserial pointer by 1 byte
-;      debug   '4'
+       debug   '4'
 
        mov_lw  0x0f
        and_wfw fromserial
@@ -320,6 +327,10 @@ master_interrupt_high @
        ; timer0 interrupt
 
        debug   ','     ; write ',' to serial port
+       Df      fromserial
+       Df      totrack
+       Df      nmractrl
+
        bc_fa   INTCON,TMR0IF   ; clear interrupt-set bit
 
        ifdef   SLOW_VERSION
@@ -456,11 +467,12 @@ advance_read_buffer
 ; aaaabbbb -> bbbbaaaa -> bbbb(aaaa+1) -> 0000(aaaa+1) -> (aaaa+1)0000
        bt_f_if1 totrack, 6 ; were we doing watchdog broadcasts ?
        bra     advance_read_buffer_ifwatchdog
+
        mov_fw  totrack
        add_lw  0x10
        and_lw  0x30
        mov_wf  totrack
-       debug   '9'     ; write 'v' to serial port
+       debug   '9'     ; write '9' to serial port
 
        inc_f   acknmra
        bs_f    PIE1, TXIE      ; ensure we tell host to send us more