diff --git a/assembly.txt b/assembly.txt
index 3526aaa..ff6e7c5 100644
--- a/assembly.txt
+++ b/assembly.txt
@@ -41,3 +41,25 @@ JMP R00
 06 - JEQ - jump if equals
 JMP DESTINATION SOURCE1 SOURCE2
 JMP R00 R01 C00
+
+07 - HIN - halt for input
+HIN DESTINATION
+HIN R00
+
+Reserved registers:
+
+Register 8 is used for text and number output. Numbers through hex 01-25 correspond to a number, here is the sheet:
+
+00 - Nothing
+
+01-0A - Numbers from 0-9
+
+0B-24 - Letters from A-Z (capitalized)
+
+25 - Space
+
+26 - New line
+
+27-FF - Nothing
+
+To print, just make sure to store the corresponding number in register 8, and don't forget to replace it with 00, else it will constantly print out, as it doesn't clear.