initial commit

2026-07-18 20:34:55 +02:00
commit 59ad004c96
474 changed files with 226635 additions and 0 deletions
@@ -0,0 +1,36 @@
+#include <string.h>
+
+#define Screen	((char *)0x0400)
+#define Color	((char *)0xd800)
+
+int main(void)
+{
+	memset(Screen, 160, 1024);
+
+	int	py, px;
+	
+	for(py=0; py<25; py++)
+	{
+		for(px=0; px<40; px++)
+		{
+			float	xz = (float)px * (3.5 / 40.0)- 2.5;
+			float	yz = (float)py * (2.0 / 25.0) - 1.0;
+			
+			float	x = 0.0, y = 0.0;
+			int		i;
+			for(i=0; i<=14; i++)
+			{
+				if (x * x + y * y > 4.0) break;
+						
+				float	xt = x * x - y * y + xz;
+				y = 2 * x * y + yz;
+				x = xt;
+			}
+			i--;
+		
+			Color[py * 40 + px] = i;
+		}
+	}
+	
+	return 0;
+}