#include <kihon.h>
char init;
//NMI割り込み
void NMIProc(void)
{
static unsigned char bgx,no,mode,wno[2],scr,amari,flg;
unsigned char pos[2],x[2];
if (init) {
bgx=0;
no=2;
mode=1;
scr=0;
init=0;
flg=0;
}
amari = bgx % 8;
if (bgx==8) {
flg=1;
if (mode) {
scr=0;
} else {
scr=2;
}
}
if (amari == 1) {
x[1] = x[0];
x[0] = bgx / 8;
wno[1] = wno[0];
wno[0] = no + 48;
} else if (amari > 0 && flg) {
GetBackgroundAddress(scr, x[1], (amari - 2) * 5 , pos);
FillBackground(*(pos + 0),*(pos + 1) ,wno[1],5);
}
if (bgx==255) {
no++;
mode^=1;
}
bgx++;
if (mode) {
SetPPU(0x8c,0x1e);
} else {
SetPPU(0x8d,0x1e);
}
SetScroll(bgx,0);
if (no > 9) { no=1; }
}
// メイン処理
void NesMain()
{
unsigned char i,j,pos[2];
const char bgpalette[] = {
0x0f, 0x21, 0x11, 0x20, 0x0f, 0x21, 0x11, 0x20,
0x0f, 0x21, 0x11, 0x20, 0x0f, 0x21, 0x11, 0x20 };
const char sppalette[] = {
0x0f, 0x0a, 0x37, 0x20, 0x0f, 0x0a, 0x25, 0x20,
0x0f, 0x0a, 0x11, 0x20, 0x0f, 0x0a, 0x2a, 0x20 };
VBlank();
InitPPU();
init = 1;
// パレット設定
SetPalette((char *)bgpalette ,0);
SetPalette((char *)sppalette, 1);
for (j = 0; j < 2; j++)
{
for (i = 0; i < 30; i++)
{
GetBackgroundAddress(j * 2, 0, i, pos);
FillBackground(*(pos + 0), *(pos + 1), 48 + j, 32);
}
}
SetPPU(0x8c,0x1e);
while (1);
}