fixed that damn melody smashing bug by removing i from sram
This commit is contained in:
Joachim Fenkes
parent
71853df37d
commit
889e60aa07
100
avr/noiseplug.s
100
avr/noiseplug.s
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@ -22,7 +22,6 @@ LEADINIT2 = 3571
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.section .bss
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.section .bss
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.comm int_ctr, 1
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.comm int_ctr, 1
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.comm i, 3
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.comm lead1, 4
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.comm lead1, 4
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.comm lead2, 4
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.comm lead2, 4
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@ -46,14 +45,14 @@ NULL:
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.type __vector_4, @function
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.type __vector_4, @function
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__vector_4:
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__vector_4:
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push r16
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push r16
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push r24
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in r16, SREG
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in r16, SREG
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lds r24,int_ctr
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push r16
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subi r24,lo8(-(1))
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lds r16,int_ctr
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andi r24,lo8(3)
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subi r16, -1
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sts int_ctr,r24
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andi r16, 3
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sts int_ctr, r16
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pop r16
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out SREG, r16
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out SREG, r16
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pop r24
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pop r16
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pop r16
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reti
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reti
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.size __vector_4, .-__vector_4
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.size __vector_4, .-__vector_4
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@ -67,18 +66,18 @@ clear_sram:
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sbrs r30, 5
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sbrs r30, 5
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rjmp clear_sram
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rjmp clear_sram
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ldi r18, 0;LEADSIZE
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ldi r18, LEADSIZE
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sts lead1, r18
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sts lead1, r18
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sts lead2, r18
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sts lead2, r18
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sts lead3, r18
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sts lead3, r18
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; ldi r18, hi8(LEADINIT1)
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ldi r18, hi8(LEADINIT1)
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; sts leadosc2, r18
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sts lead2 + 2, r18
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; ldi r18, lo8(LEADINIT1)
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ldi r18, lo8(LEADINIT1)
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; sts leadosc2 + 1, r18
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sts lead2 + 3, r18
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; ldi r18, hi8(LEADINIT2)
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ldi r18, hi8(LEADINIT2)
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; sts leadosc3, r18
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sts lead3 + 2, r18
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; ldi r18, lo8(LEADINIT2)
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ldi r18, lo8(LEADINIT2)
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; sts leadosc3 + 1, r18
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sts lead3 + 3, r18
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out CCP, r17
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out CCP, r17
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out CLKPSR, r16
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out CLKPSR, r16
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@ -94,19 +93,24 @@ clear_sram:
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sei
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sei
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out TIFR0, r17
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out TIFR0, r17
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; YH and ZH never change
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ldi r31, hi8(bassline+0x4000)
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clr r29
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; init i
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ldi r17, 3
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ldi r18, 0xF0
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clr r19
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mainloop:
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mainloop:
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sleep
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sleep
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clr r16
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clr r16
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lds r17, int_ctr
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lds r20, int_ctr
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tst r17
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tst r20
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brne mainloop
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brne mainloop
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sbi PORTB, 2
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sbi PORTB, 2
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lds r17, i
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lds r18, i+1
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lds r19, i+2
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subi r19, 0xff
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subi r19, 0xff
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sbci r18, 0xff
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sbci r18, 0xff
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sbci r17, 0xff
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sbci r17, 0xff
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@ -123,9 +127,7 @@ mainloop:
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clr r18
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clr r18
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norestart:
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norestart:
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sts i, r17
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;rjmp noarp
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sts i+1, r18
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sts i+2, r19
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; ==== BASS ====
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; ==== BASS ====
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; bassptr(r20) = (i >> 13) & 0xF
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; bassptr(r20) = (i >> 13) & 0xF
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@ -141,7 +143,6 @@ norestart:
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ori r20, 0x10
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ori r20, 0x10
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; note = notes[bassline[bassptr]]
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; note = notes[bassline[bassptr]]
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ldi r31, hi8(bassline+0x4000)
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ldi r30, lo8(bassline)
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ldi r30, lo8(bassline)
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add r30, r20
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add r30, r20
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ld r20, Z
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ld r20, Z
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@ -185,7 +186,7 @@ nobassbeat:
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andi r22, 0x7F
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andi r22, 0x7F
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add r24, r22
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add r24, r22
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; if ((i >> 6) & 0xF) == 0xF: sample += (bass >> 2)
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; if !((i >> 6) & 0xF) == 0xF: sample += (bass >> 2)
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lsr r24
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lsr r24
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lsr r24
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lsr r24
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mov r20, r18
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mov r20, r18
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@ -284,30 +285,29 @@ arptiming_noshift:
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noarp:
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noarp:
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; ==== LEAD ===
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; ==== LEAD ===
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clr r29
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ldi r28, lead1
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ldi r28, lead1
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ldi r24, 0
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ldi r24, 0
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ldi r25, ~1
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ldi r25, ~1
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rcall lead_voice
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rcall lead_voice
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mov r16, r23
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add r16, r23
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;ldi r28, lead2
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ldi r28, lead2
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;ldi r24, 4
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ldi r24, 4
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;ldi r25, ~2
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ldi r25, ~2
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;rcall lead_voice
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rcall lead_voice
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;lsr r23
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lsr r23
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;lsr r23
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lsr r23
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;add r16, r23
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add r16, r23
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;lsr r23
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lsr r23
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;add r16, r23
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add r16, r23
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;ldi r28, lead3
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ldi r28, lead3
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;ldi r24, 8
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ldi r24, 8
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;ldi r25, ~4
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ldi r25, ~4
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;rcall lead_voice
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rcall lead_voice
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;lsr r23
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lsr r23
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;lsr r23
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lsr r23
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;add r16, r23
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add r16, r23
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out OCR0AL, r16
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out OCR0AL, r16
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@ -386,7 +386,7 @@ getleaddata:
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ld r24, Z ; r24 = data!
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ld r24, Z ; r24 = data!
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; if (0 == leadtimer) {
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; if (0 == leadtimer) {
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neg r25
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com r25
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tst r27
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tst r27
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brne noleadupdate
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brne noleadupdate
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@ -435,10 +435,10 @@ noleadupdate:
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and r26, r25
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and r26, r25
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brne noreduce
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brne noreduce
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lsr r23
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; lsr r23
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mov r22, r23
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; mov r22, r23
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lsr r23
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; lsr r23
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add r23, r22
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; add r23, r22
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noreduce:
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noreduce:
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; if (data == 0) return 0;
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; if (data == 0) return 0;
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