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736092a087
There's a ton of work that would need to be done before we could spin up on another architecture, but let's at least try to separate things out a bit.
20 lines
490 B
C++
20 lines
490 B
C++
#include <Kernel/Arch/i386/CPU.h>
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#include <Kernel/Devices/PCSpeaker.h>
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#include <Kernel/IO.h>
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#include <Kernel/i8253.h>
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void PCSpeaker::tone_on(int frequency)
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{
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IO::out8(PIT_CTL, TIMER2_SELECT | WRITE_WORD | MODE_SQUARE_WAVE);
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word timer_reload = BASE_FREQUENCY / frequency;
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IO::out8(TIMER2_CTL, LSB(timer_reload));
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IO::out8(TIMER2_CTL, MSB(timer_reload));
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IO::out8(0x61, IO::in8(0x61) | 3);
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}
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void PCSpeaker::tone_off()
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{
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IO::out8(0x61, IO::in8(0x61) & ~3);
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}
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