mirror of https://github.com/LemonBoy/grape.git
83 lines
1.5 KiB
C
83 lines
1.5 KiB
C
#include <nds.h>
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#include "emu.h"
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static u32 frames_done;
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static u32 vblanks;
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void irq_vblank ()
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{
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if (vblanks++ == 60) {
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consoleClear();
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iprintf("FPS %i\n", frames_done);
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// iprintf("keybd_latch : %02x\n", keybd_latch);
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frames_done = 0;
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vblanks = 0;
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}
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}
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void emu_reset ()
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{
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sound_reset();
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mem_reset();
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cpu_reset();
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}
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void emu_init ()
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{
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keyboardShow();
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// Set some sane defaults
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emu_vsync = 1;
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// Setup the video hardware
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video_init();
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// Load the appropriate bios
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u16 crc;
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/*load_bin("APPLE2.ROM", 0xB000, 0x5000, &crc);*/
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if (load_bin("BASIC.ROM", 0xD000, 0x3000, &crc)) {
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iprintf("BIOS CRC16 %04x (%s)\n", crc, (crc == 0xAC8F) ? "Valid" : "Invalid");
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// Refuse to load a wrong bios
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if (crc != 0xAC8F)
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while (1);
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} else {
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iprintf("No BASIC.ROM found. Halting.");
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while (1);
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}
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// Load the disk rom in place
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load_buf(disk_rom, 0xc600, 0x100);
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basename = NULL;
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// Used by the fps counter
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frames_done = 0;
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vblanks = 0;
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// Fire the counter
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irqSet(IRQ_VBLANK, irq_vblank);
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irqEnable(IRQ_VBLANK);
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emu_reset();
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}
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void emu_run ()
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{
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while (1) {
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cpu_run(17030);
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video_draw();
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update_input();
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frames_done++;
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if (keysDown()&KEY_START)
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pause_menu();
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sound_play();
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if (emu_vsync)
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swiWaitForVBlank();
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bgUpdate();
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}
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}
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