mirror of
https://gitlab.com/ryandwyer/perfect-dark
synced 2026-07-25 06:08:36 -04:00
Ryan Dwyer
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#include <libultra_internal.h>
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#include "game/data/data_000000.h"
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#include "gvars/gvars.h"
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typedef struct {
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unsigned int inst1;
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unsigned int inst2;
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unsigned int inst3;
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unsigned int inst4;
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} __osExceptionVector;
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extern __osExceptionVector __osExceptionPreamble;
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extern u32 osAppNMIBuffer;
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void osInitialize()
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{
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u32 pifdata;
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__osFinalRom = TRUE;
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__osSetSR(__osGetSR() | SR_CU1);
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__osSetFpcCsr(FPCSR_FS | FPCSR_EV);
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while (__osSiRawReadIo(PIF_RAM_END - 3, &pifdata));
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while (__osSiRawWriteIo(PIF_RAM_END - 3, pifdata | 8));
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*(__osExceptionVector *)UT_VEC = __osExceptionPreamble;
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*(__osExceptionVector *)XUT_VEC = __osExceptionPreamble;
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*(__osExceptionVector *)ECC_VEC = __osExceptionPreamble;
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*(__osExceptionVector *)E_VEC = __osExceptionPreamble;
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osWritebackDCache((void *)UT_VEC, E_VEC - UT_VEC + sizeof(__osExceptionVector));
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osInvalICache((void *)UT_VEC, E_VEC - UT_VEC + sizeof(__osExceptionVector));
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func00005dc0();
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osMapTLBRdb();
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osClockRate = osClockRate * 3 / 4;
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if (osResetType == RESET_TYPE_COLD_RESET) {
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bzero(&osAppNMIBuffer, 0x40);
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}
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if (osTvType == OS_TV_PAL) {
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osViClock = VI_PAL_CLOCK;
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} else if (osTvType == OS_TV_MPAL) {
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osViClock = VI_NTSC_CLOCK;
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} else {
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osViClock = VI_NTSC_CLOCK;
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}
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if (__osGetCause() & CAUSE_IP5) {
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while (1);
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}
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*(u32 *)PHYS_TO_K1(AI_CONTROL_REG) = 1;
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*(u32 *)PHYS_TO_K1(AI_DACRATE_REG) = 0x3fff;
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*(u32 *)PHYS_TO_K1(AI_BITRATE_REG) = 0xf;
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}
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