nitron

diff --git a/man/vm.md b/man/vm.md
index 11d07f26035fbcb8c3594168948e617fc5ff9d57..4e1519bb64b3ac2a36f9ed031e641e7c13781917 100644
--- a/man/vm.md
+++ b/man/vm.md
@@ -1,7 +1,16 @@
 # Nitron VM
+## Opcodes
+Opcodes have this format
+| `76543210` |
+| ---------- |
+| `IOOOOOOO` |
+
+- `I` means the 32 bit word after the instruction is pushed before running the instruction
+- `O` is the opcode
+
 ## Instructions
-- VM_INST_NOP     (`0x00`)
-	- Does nothing
+- VM_INST_HALT    (`0x00`) `( -- )`
+	- Halts the virtual machine
 - VM_INST_ADD     (`0x01`) `( a b -- a+b )`
 	- Adds 2 integers and returns the result
 - VM_INST_SUB     (`0x02`) `( a b -- a-b )`
@@ -32,8 +41,8 @@ - VM_INST_JUMP    (`0x0E`) `( addr -- )`
 	- Jumps to the given address
 - VM_INST_JNZ     (`0x0F`) `( v addr -- )`
 	- Jumps to the given address if the value below the address is not 0
-- VM_INST_HALT    (`0x10`) `( -- )`
-	- Halts the virtual machine
+- VM_INST_NOP     (`0x10`)
+	- Does nothing
 - VM_INST_SYSCALL   (`0x11`)
 	- Pops the given system call ID and calls it, see system calls section
 - VM_INST_REG     (`0x12`) `( reg -- v)`




diff --git a/vm/source/vm.h b/vm/source/vm.h
index 6ec93f406c712d7acfb6e938dbd573a0dcf28af9..45ffbac7e5350d8d79d20dbdc7b0ecc04e3dc28f 100644
--- a/vm/source/vm.h
+++ b/vm/source/vm.h
@@ -2,7 +2,7 @@ #ifndef N_VM_H
 #define N_VM_H
 
 enum {
-	VM_INST_NOP       = 0x00,
+	VM_INST_HALT      = 0x00,
 	VM_INST_ADD       = 0x01,
 	VM_INST_SUB       = 0x02,
 	VM_INST_MUL       = 0x03,
@@ -18,7 +18,7 @@ 	VM_INST_READ      = 0x0C,
 	VM_INST_WRITE     = 0x0D,
 	VM_INST_JUMP      = 0x0E,
 	VM_INST_JNZ       = 0x0F,
-	VM_INST_HALT      = 0x10,
+	VM_INST_NOP       = 0x10,
 	VM_INST_SYSCALL   = 0x11,
 	VM_INST_REG       = 0x12,
 	VM_INST_WREG      = 0x13,