Outline the simulator

1 files changed, 21 insertions, 0 deletions

diff --git a/src/memory.rs b/src/memory.rs
new file mode 100644
index 0000000..854b0ea
--- /dev/null
+++ b/src/memory.rs
@@ -0,0 +1,21 @@
+use isa::{Instruction};
+
+pub struct Memory {
+    memory: Vec<u32>,
+}
+
+impl Memory {
+    pub fn new(size: usize) -> Memory {
+        Memory {
+            memory: Vec::with_capacity(size),
+        }
+    }
+
+    pub fn read_word(&self, address: usize) -> Option<u32> {
+        self.memory.get(address).map(Clone::clone)
+    }
+
+    pub fn read_instruction(&self, pc: usize) -> Option<Instruction> {
+        self.memory.get(pc).map(Clone::clone).map(Instruction::new)
+    }
+}