From fb2d32359cda7007dbf2535203db3ecf6d526fdf Mon Sep 17 00:00:00 2001
From: darcy <acednes@gmail.com>
Date: Sat, 28 Sep 2024 12:26:17 +1000
Subject: [PATCH] Implement `PUTSP` based on `PUTS`

---
 src/runtime.rs | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/runtime.rs b/src/runtime.rs
index c69df2d..cdf8242 100644
--- a/src/runtime.rs
+++ b/src/runtime.rs
@@ -302,8 +302,22 @@ impl RunState {
             }
             // putsp
             0x24 => {
-                // TODO: impl putsp
-                todo!("TODO: putsp can be put off until someone needs it")
+                let mut addr = *self.reg(0);
+                loop {
+                    let chr_raw = *self.mem(addr);
+                    let chr_high = ((chr_raw >> 8) & 0xFF) as u8 as char;
+                    if chr_high == '\0' {
+                        break;
+                    }
+                    print!("{}", chr_high);
+                    let chr_low = (chr_raw & 0xFF) as u8 as char;
+                    if chr_low == '\0' {
+                        break;
+                    }
+                    print!("{}", chr_low);
+                    addr += 1;
+                }
+                stdout().flush().unwrap();
             }
             // halt
             0x25 => {