diff --git a/assembler.rb b/assembler.rb
index c3949d9..b745edd 100644
--- a/assembler.rb
+++ b/assembler.rb
@@ -25,6 +25,10 @@ end
 
 
 # # # INSTRUCTIONS # # #
+
+# ops should always be in format of
+# [src] [args] -> [dest]
+
 def jmp(addr)
 	# TODO: this probs wont show up since we have < 3mb of ram but
 	# we can't jump to an address with a different 4 most significant bits
@@ -45,7 +49,7 @@ end
 # load upper immediate
 # NOTE: val will be shifted left by 16
 def lui(val, dest)
-	#      oooooo ----- ttttt iiiiiiiiiiiiiiii
+	#      oooooo ----- ddddd iiiiiiiiiiiiiiii
 	op = 0b001111_00000_00000_0000000000000000
 	op |= 0xffff & val
 	op |= (0b11111 & dest) << 16
@@ -68,10 +72,19 @@ def ori(src, bits, dest)
 	op = 0b001101_00000_00000_00000000_00000000
 	op |= (src & 0b11111) << 21
 	op |= (bits & 0xffff)
-	op |= (dest & 0x11111) << 16
+	op |= (dest & 0b11111) << 16
 	word op
 end
 
+# store word
+def sw(src, offset, dest)
+	#      oooooo ddddd sssss iiiiiiii iiiiiiii
+	op = 0b101011_00000_00000_00000000_00000000
+	op |= (src & 0b11111) << 16
+	op |= (offset & 0xffff)
+	op |= (dest & 0b11111) << 21
+	word op
+end
 
 
 
@@ -127,6 +140,18 @@ nop ; jmp $base_addr + 16 ; nop ; word 0xdeadbeef
 lui $gp0 >> 16, 1
 ori 1, $gp0, 1
 
+nop
+
+#lui 0, 3
+#ori 3, 0xffff, 3
+
+#sw 1, 0, 2
+
+32.times do |i|
+	ori i, 0xf00d, i
+end
+
+
 nop ; nop ; nop ; nop
 nop ; nop ; nop ; nop
 nop ; nop ; nop ; nop