21 lines
423 B
C
21 lines
423 B
C
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#include "apu.h"
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#include <string.h>
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const unsigned char APUINIT[0x13] = {
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0x30,0x08,0x00,0x00,
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0x30,0x08,0x00,0x00,
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0x80,0x00,0x00,0x00,
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0x30,0x00,0x00,0x00,
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0x00,0x00,0x00
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};
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void apu_init() {
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// from https://wiki.nesdev.com/w/index.php/APU_basics
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memcpy((void*)0x4000, APUINIT, sizeof(APUINIT));
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APU.fcontrol = 0x40; // frame counter 5-step
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APU.status = 0x0f; // turn on all channels except DMC
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}
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