basic memory and cpu

memory/memory.go

@@ -0,0 +1,35 @@
+package memory
+
+import (
+	"radu.macocian.me/goboy/errorHandling"
+)
+
+var memory = new([64000]byte)
+
+func Read(addr int) []byte {
+	checkInside(addr)
+	checkInside(addr + 8)
+
+	return memory[addr : addr+9]
+}
+
+func Write(addr int, val [8]byte) {
+	checkInside(addr)
+	for i := 0; i < 8; i++ {
+		memory[addr+i] = val[i]
+	}
+}
+
+func WriteAll(addr int, val []byte) {
+	checkInside(addr)
+	checkInside(addr + len(val))
+	for b := 0; b < len(val); b++ {
+		memory[addr+b] = val[b]
+	}
+}
+
+func checkInside(addr int) {
+	if addr < 0 || addr >= len(memory) {
+		panic(errorHandling.OutOfMemoryBoundsError)
+	}
+}