telnet now will load the IBM logo and run through it.

gemma/src/chip8/computer_manager.rs

@@ -1,3 +1,6 @@
+use std::fs::File;
+use std::io::{BufReader, Read};
+use std::path::{Path, PathBuf};
 use crate::chip8::computer::Chip8Computer;
 use crate::chip8::cpu_states::Chip8CpuStates;
 use crate::chip8::cpu_states::Chip8CpuStates::WaitingForInstruction;
@@ -142,4 +145,26 @@ impl Chip8ComputerManager {
             ManagerDumpables::Keyboard => self.computer.keypad.format_as_string(),
         }
     }
+
+    pub fn load_new_program_from_disk_to_system_memory(&mut self, file_to_load: &Path) {
+        println!("ComputerManager: Preparing to load {}", file_to_load.display());
+        // load the file into bytes...
+        let file = File::open(file_to_load).unwrap();
+        let mut reader = BufReader::new(file);
+        let mut chunks = Vec::new();
+
+        loop {
+            let mut buffer = vec![0u8; 1];
+            let bytes_read = reader.read(&mut buffer).unwrap_or(0);
+            if bytes_read == 0 {
+                break;
+            }
+            buffer.truncate(bytes_read);
+            chunks.push(buffer[0]);
+        }
+
+        self.load_new_program_to_system_memory(chunks);
+        // ...then use the existing method
+        self.core_should_run = true;
+    }
 }