From c9c9cf67dacbf27768119991cd357f8d8808c527 Mon Sep 17 00:00:00 2001
From: Trevor Merritt <trevor.merritt@gmail.com>
Date: Thu, 22 May 2025 14:15:38 -0400
Subject: [PATCH] telnet now will load the IBM logo and run through it.

---
 gemma/src/chip8/computer_manager.rs |  25 +++++++++++++++++++++++++
 gemmatelnet/src/client_handler.rs   |   8 ++++++--
 resources/roms/default.ch8          | Bin 0 -> 132 bytes
 3 files changed, 31 insertions(+), 2 deletions(-)
 create mode 100644 resources/roms/default.ch8

diff --git a/gemma/src/chip8/computer_manager.rs b/gemma/src/chip8/computer_manager.rs
index 8174890..98be529 100644
--- a/gemma/src/chip8/computer_manager.rs
+++ b/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;
+    }
 }
diff --git a/gemmatelnet/src/client_handler.rs b/gemmatelnet/src/client_handler.rs
index f1b53fa..deabf3a 100644
--- a/gemmatelnet/src/client_handler.rs
+++ b/gemmatelnet/src/client_handler.rs
@@ -5,6 +5,7 @@ use gemma::chip8::quirk_modes::QuirkMode;
 use crate::telnet_utils::list_of_files_in_directory;
 use std::io::Write;
 use std::path::Path;
+use gemma::constants::RESOURCES_ROOT;
 
 const CANT_NOTIFY_ERROR: &str = "Unable to notify client";
 const MENU_TEXT: &str = r#"
@@ -84,11 +85,14 @@ pub fn handle_client(mut stream: TcpStream) {
                     );
             }
             "load" => {
-
+                let file_to_use = p1.unwrap_or("default.ch8");
                 // chip8 = Chip8ComputerManager::from(chip8).load_new_program_to_system_memory()
                 message_to_send = format!("Preparing to load {} from disk.",
                                           p1.unwrap_or("default.ch8").trim());
-                chip8.start();
+
+                chip8.load_new_program_from_disk_to_system_memory(
+                    Path::new(format!("{}/roms/{}", RESOURCES_ROOT, file_to_use).as_str())
+                );
             }
             "menu" => {
                 message_to_send = MENU_TEXT.to_string();
diff --git a/resources/roms/default.ch8 b/resources/roms/default.ch8
new file mode 100644
index 0000000000000000000000000000000000000000..677f227f03beb6243aa91d9fafcf576690eb66d0
GIT binary patch
literal 132
zcmZR0ut+O`Cz0cVd;#Yo%M0?0JPJT;mPO$}l4DUCm@K^@FQoCG;Xi{76av{Gt_6cV
z5Ly6P{~H({0AT|Vg6SU&e;Dk5a@Gu%3_lotFf*_-@H6aZ_|5Q{;W2~rQ`Scet?Z4A
M4NMK}580jr00m|(Pyhe`

literal 0
HcmV?d00001