initial commit

2026-07-18 20:34:55 +02:00
commit 59ad004c96
474 changed files with 226635 additions and 0 deletions
@@ -0,0 +1,26 @@
+#include "cia.h"
+
+byte ciaa_pra_def;
+
+void cia_init(void)
+{
+	cia1.icr = 0x7f;
+	cia2.icr = 0x7f;
+	cia1.pra = 0x7f;
+	cia1.cra = 0x08;
+	cia1.crb = 0x08;
+	cia2.cra = 0x08;
+	cia2.crb = 0x08;
+
+	cia1.ddrb = 0x00;
+	cia2.ddrb = 0x00;
+	cia1.ddra = 0xff;
+	
+	cia2.pra = 0x07;
+	cia2.ddra = 0x3f;
+
+	char i0 = cia1.icr;
+	char i1 = cia2.icr;
+
+	ciaa_pra_def = 0x7f;	
+}