prep to do big tick method

cli/src/bin/rom_only.rs

@@ -1,19 +1,9 @@
 use std::fs;
-use clap::Parser;
 use core::computers::rom_only::RomOnlyComputer;
 use core::periph::backplane::Backplane;
 
-#[derive(Parser)]
-struct CliOptions {
-    offset: u16,
-    bytes: u16,
-    filename: String
-}
-
 fn main() {
     println!("Taxation is theft");
-
-    // let opts = CliOptions::parse();
     let path = "/home/tmerritt/Projects/mos6502/resources/test/periph/at28c256/checksum.bin";
     let bytes = match  fs::read(path) {
         Ok(bytes) => {

cli/src/bin/rom_only_widetick.rs

@@ -0,0 +1,20 @@
+use std::fs;
+use core::computers::rom_only::RomOnlyComputer;
+
+fn main() {
+    println!("Taxation is theft");
+    let path = "/home/tmerritt/Projects/mos6502/resources/test/periph/at28c256/checksum.bin";
+    let bytes = match fs::read(path) {
+        Ok(bytes) => {
+            println!("Loaded {} bytes", bytes.len());
+            bytes
+        },
+        Err(e) => vec![]
+    };
+
+    let mut rom_only = RomOnlyComputer::program((&bytes[..]).to_vec());
+
+    rom_only.tick2(0x05, 0b0000_0001, 0x05);
+    println!("COMPUTER: Read {:02x} from ROM", rom_only.data_bus()) ;
+    println!("COMPUTER: Read {:04x} from Address Bus", rom_only.address_bus());
+}

core/src/computers/ram_rom/backplane.rs

@@ -47,6 +47,7 @@ impl Backplane for RamRomComputer {
             }
         }
     }
+
     fn set_read_mode(&mut self, new_mode: bool) {
         self.read_mode = new_mode;
     }

core/src/computers/rom_only/mod.rs

@@ -11,4 +11,13 @@ pub struct RomOnlyComputer {
     pub(crate) data_bus: u8,
     pub(crate) address_bus: u16,
     pub(crate) read_mode: bool,
+}
+
+impl RomOnlyComputer {
+    pub fn tick2(&mut self, address: u16, control: u8, data: u8) -> (u8) {
+        // tick the parts...
+
+        let (_, new_data) = self.rom.tick(address, data, control == 0x01);
+        new_data
+    }
 }

core/src/computers/rom_only/rom_chunks.rs

@@ -5,4 +5,4 @@ impl RomOnlyComputer {
     pub fn rom_chunks(&self, size: usize) -> Chunks<u8> {
         self.rom.chunks(size)
     }
-}
+}