From 9e8ba6e00dc4a4137a5187dbe5fe5b1394219735 Mon Sep 17 00:00:00 2001
From: Melodi <62381002+Melodi17@users.noreply.github.com>
Date: Fri, 5 Sep 2025 10:20:03 +1000
Subject: stuff

---
 Emulator/Chip/Q1CpuInstructions.cs |  4 ++--
 Emulator/Program.cs                | 15 +++++++++++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

(limited to 'Emulator')

diff --git a/Emulator/Chip/Q1CpuInstructions.cs b/Emulator/Chip/Q1CpuInstructions.cs
index 72d78e5..0041b25 100644
--- a/Emulator/Chip/Q1CpuInstructions.cs
+++ b/Emulator/Chip/Q1CpuInstructions.cs
@@ -125,14 +125,14 @@ public partial class Q1Cpu
     private void Instruction_SHL(u8 m1, u8 m2)
     {
         u16 v1 = this.Address(m1).read();
-        u16 v2 = this.Address(m1).read();
+        u16 v2 = this.Address(m2).read();
         u16 shifted = (u16) (v1 << v2);
         this.DX = shifted;
     }
     private void Instruction_SHR(u8 m1, u8 m2)
     {
         u16 v1 = this.Address(m1).read();
-        u16 v2 = this.Address(m1).read();
+        u16 v2 = this.Address(m2).read();
         u16 shifted = (u16) (v1 >> v2);
         this.DX = shifted;
     }
diff --git a/Emulator/Program.cs b/Emulator/Program.cs
index 65bf068..f6fa932 100644
--- a/Emulator/Program.cs
+++ b/Emulator/Program.cs
@@ -64,6 +64,7 @@ public class Program
                 cpu.Clock();
             }
             Console.WriteLine($"Exit code: 0x{cpu.V[0]:X4}");
+            MemoryDump(memory, Q1Layout.FreeMemoryStart, (u16) (Q1Layout.Memory.start + Q1Layout.Memory.size - 1));
         });
         t.IsBackground = true;
         t.Start();
@@ -80,4 +81,18 @@ public class Program
         Console.WriteLine("Display surface closed. Waiting for CPU thread to finish...");
         t.Join();
     }
+    
+    private static void MemoryDump(RamDevice memory, u16 start, u16 end)
+    {
+        for (u16 addr = start; addr <= end; addr += 16)
+        {
+            Console.Write($"0x{addr:X4}: ");
+            for (u16 offset = 0; offset < 16; offset++)
+            {
+                if (addr + offset > end) break;
+                Console.Write($"{memory.Read((u16) (addr + offset)):X2} ");
+            }
+            Console.WriteLine();
+        }
+    }
 }
\ No newline at end of file
-- 
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