Clean up some small bits

diff --git a/siggen.asm b/siggen.asm
index 966ecf4670a4cdbaab601e5a7f1db6200b0603c7..351775574b0d53b6c3221bbee6cfb95ecbbacd36 100644 (file)
--- a/siggen.asm
+++ b/siggen.asm
@@ -121,9 +121,9 @@ reset:
        eor     r25, r25
        out     SREG, r25
        ldi     r25, HIGH(RAMEND)
-       ldi     r24, LOW(RAMEND)
        out     SPH, r25
-       out     SPL, r24
+       ldi     r25, LOW(RAMEND)
+       out     SPL, r25
 
        ; ----- Set up PORTD for outputting samples, initial output to center of range
 
@@ -156,11 +156,6 @@ reset:
                     (0 << MUX0)
        sts     ADMUX, r25
 
-       ; Disable digital input on ADC pin
-       lds     r25, DIDR0
-       andi    r25, ~(1 << ADC0D)
-       sts     DIDR0, r25
-
        ; ADCSRB is for the comparator and autotrigger, neither are active
 
        ; ----- Set up button pin and timer for switching waveforms
@@ -307,7 +302,6 @@ _adc_wait:
        ; ----- Poll for button presses and swap waveforms
 
        ; Test for pin change interrupt flag
-       in      r25, PCIFR
        sbis    PCIFR, PCIF1
        rjmp    _button_done
        ; Button pin status has changed