Add missing interrupt 2

bin/example.wasm

@@ -60,14 +60,16 @@ seti [%B] $50;
 seti %A $66;
 seti [$10] %A;
 
+# Print 66 as decimal
 seti %A [$10];
 int $1;
 
 seti %A $10; # newline
 int $0;
 
+# Print 50 as hex (0x32)
 seti %A [$1024];
-int $1;
+int $2;
 
 # Push the string "hell" into register A
 seti %A $108;
@@ -83,4 +85,4 @@ seti [$900] %A;
 # Setup to print a string from position 900
 seti %A $900;
 seti %B $4;
-int $2;
+int $3;

src/execute/interrupts.cpp

@@ -11,7 +11,9 @@ namespace Execute
 			[](Execute::Registers & registers, std::vector<std::uint8_t> & memory) { std::putc(registers.A, stdout); },
 			// 1 print decimal integer
 			[](Execute::Registers & registers, std::vector<std::uint8_t> & memory) { std::printf("%i", registers.A); },
-			// 2 print string from memory
+			// 2 print hexadecimal integer
+			[](Execute::Registers & registers, std::vector<std::uint8_t> & memory) { std::printf("0x%x", registers.A); },
+			// 3 print string from memory
 			[](Execute::Registers & registers, std::vector<std::uint8_t> & memory)
 			{
 				unsigned const end = registers.A + registers.B;