Implement SNE (register arguments) and LD for the I register

1 files changed, 10 insertions, 0 deletions

diff --git a/main.myr b/main.myr
index d7fc392..fcccb77 100644
--- a/main.myr
+++ b/main.myr
@@ -168,6 +168,16 @@ const main = {
                 reg[opcode & 0x0f] <<= 1
             | _: std.die("unimplemented opcode\n")
             ;;
+        // SNE
+        | 0x9:
+            if reg[opcode & 0x0f] != reg[(arg & 0xf0) >> 4]
+                pc += 2
+            ;;
+        // LD (I)
+        | 0xa:
+            I = (opcode & 0x0f : uint16)
+            I <<= 8
+            I |= (arg : uint16)
         | _ : std.die("unimplemented opcode\n")
         ;;
         pc += 2