feat(vmm): Help menu

1 files changed, 29 insertions, 0 deletions

diff --git a/vm/src/vmm/command.rs b/vm/src/vmm/command.rs
index 6791663..188030e 100644
--- a/vm/src/vmm/command.rs
+++ b/vm/src/vmm/command.rs
@@ -110,6 +110,35 @@ pub(super) fn parse_and_exec(input: String, vm: &mut VirtualMachine) -> Result<(
 
         /* Other */
         "q" | "quit" | "e" | "exit" => return Err(String::new()),
+        "h" | "?" | "help" => {
+            print!("<ADDRESS> is a usize constant
+<VALUE> is a Word (i64) constant
+
+Multiple 'Memory IO' commands may be put on a single line, when
+separated by spaces
+
+General commands:
+  h, ?, help          This menu
+  q, e, quit, exit    Stop and exit the virtual machine
+
+Normal execution:
+  r, run <ADDRESS>    Start normal execution at ADDRESS
+                      Only applicable when 'HALTED'
+
+Single-step execution:
+  s, single <ADDRESS>    Start single-step execution at ADDRESS
+  c, continue            Resume normal execution
+                         Only applicable when in 'STEP' mode
+  n, next                Execute next instruction
+                         Only applicable when in 'STEP' mode
+
+Memory IO:
+  <ADDRESS>              Print the value at the location
+  <ADDRESS>.<ADDRESS>    Print the values between the locations
+                         (inclusive range)
+  <ADDRESS>:<VALUE>      Set value at ADDRESS to VALUE
+");
+        },
         _ => {
             for arg in args {
                 let assignment = arg.contains(':');