Start of DMD machine-level

.gitignore

@@ -2,3 +2,4 @@
 **/*.rs.bk
 Cargo.lock
 .idea
+.DS_Store

src/cpu.rs

@@ -1,5 +1,5 @@
 use bus::{AccessCode, Bus};
-use err::{CpuError, CpuException};
+use err::*;
 use instr::*;
 use std::collections::HashMap;
 
@@ -391,7 +391,7 @@ impl<'a> Cpu<'a> {
     }
 
     /// Reset the CPU.
-    pub fn reset(&mut self, bus: &mut Bus) -> Result<(), CpuError> {
+    pub fn reset(&mut self, bus: &mut Bus) -> Result<(), BusError> {
         //
         // The WE32100 Manual, Page 2-52, describes the reset process
         //

src/dmd.rs

@@ -0,0 +1,29 @@
+use bus::Bus;
+use cpu::Cpu;
+use rom_lo::LO_ROM;
+use rom_hi::HI_ROM;
+use err::*;
+
+#[allow(dead_code)]
+pub struct Dmd<'a> {
+    bus: Bus<'a>,
+    cpu: Cpu<'a>,
+}
+
+#[allow(dead_code)]
+impl<'a> Dmd<'a> {
+    pub fn new() -> Dmd<'a> {
+        let cpu = Cpu::new();
+        let bus = Bus::new(0x20000);
+        Dmd { cpu, bus }
+    }
+
+    pub fn reset(&mut self) -> Result<(), BusError> {
+        self.bus.load(0, &LO_ROM)?;
+        self.bus.load(0x10000, &HI_ROM)?;
+        self.cpu.reset(&mut self.bus)?;
+
+        Ok(())
+    }
+
+}

src/lib.rs

@@ -5,6 +5,9 @@ pub mod cpu;
 pub mod err;
 pub mod mem;
 pub mod instr;
+pub mod rom_lo;
+pub mod rom_hi;
+pub mod dmd;
 
 #[macro_use]
 extern crate lazy_static;