a91b794cb2
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9581 a1c6a512-1295-4272-9138-f99709370657
141 lines
2.1 KiB
C
141 lines
2.1 KiB
C
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#include "rockmacros.h"
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#include "defs.h"
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#include "regs.h"
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#include "hw.h"
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#include "cpu-gb.h"
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#include "mem.h"
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#include "lcd-gb.h"
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#include "rc.h"
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#include "sound.h"
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#include "rtc-gb.h"
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static int framelen = 16743;
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static int framecount;
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rcvar_t emu_exports[] =
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{
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RCV_INT("framelen", &framelen),
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RCV_INT("framecount", &framecount),
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RCV_END
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};
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void emu_init(void)
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{
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}
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/*
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* emu_reset is called to initialize the state of the emulated
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* system. It should set cpu registers, hardware registers, etc. to
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* their appropriate values at powerup time.
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*/
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void emu_reset(void)
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{
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hw_reset();
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lcd_reset();
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cpu_reset();
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mbc_reset();
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sound_reset();
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}
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void emu_step(void)
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{
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cpu_emulate(cpu.lcdc);
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}
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struct options options;
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/* This mess needs to be moved to another module; it's just here to
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* make things work in the mean time. */
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//extern struct plugin_api* rb;
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void emu_run(void)
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{
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// void *timer = sys_timer();
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int framesin=0,frames=0,timeten=*rb->current_tick, timehun=*rb->current_tick;
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// int delay;
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vid_begin();
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lcd_begin();
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#ifdef HAVE_ADJUSTABLE_CPU_FREQ
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rb->cpu_boost(true);
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#endif
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while(!shut)
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{
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cpu_emulate(2280);
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while (R_LY > 0 && R_LY < 144)
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emu_step();
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rtc_tick();
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sound_mix();
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if (!pcm_submit())
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{
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/* delay = framelen - sys_elapsed(timer);
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sys_sleep(delay);
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sys_elapsed(timer);*/
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}
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doevents();
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vid_begin();
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if (!(R_LCDC & 0x80))
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cpu_emulate(32832);
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while (R_LY > 0) /* wait for next frame */
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emu_step();
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rb->yield();
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frames++;
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framesin++;
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if(*rb->current_tick-timeten>=20)
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{
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timeten=*rb->current_tick;
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if(framesin<12) options.frameskip++;
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if(framesin>12) options.frameskip--;
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if(options.frameskip>options.maxskip) options.frameskip=options.maxskip;
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if(options.frameskip<0) options.frameskip=0;
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framesin=0;
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}
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if(options.showstats)
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{
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if(*rb->current_tick-timehun>=100) {
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options.fps=frames;
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frames=0;
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timehun=*rb->current_tick;
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}
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}
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}
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#ifdef HAVE_ADJUSTABLE_CPU_FREQ
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rb->cpu_boost(false);
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#endif
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}
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