diff --git a/hbvm/src/lib.rs b/hbvm/src/lib.rs
index 5b90f83..c520aea 100644
--- a/hbvm/src/lib.rs
+++ b/hbvm/src/lib.rs
@@ -13,7 +13,10 @@
 #![no_std]
 #![cfg_attr(feature = "nightly", feature(fn_align))]
 
-use mem::{Address, Memory};
+use {
+    mem::{Address, Memory},
+    value::ValueVariant,
+};
 
 #[cfg(feature = "alloc")]
 extern crate alloc;
@@ -66,6 +69,27 @@ where
             copier: None,
         }
     }
+
+    /// Read register
+    #[inline(always)]
+    pub fn read_reg(&self, n: u8) -> Value {
+        unsafe { *self.registers.get_unchecked(n as usize) }
+    }
+
+    /// Write a register.
+    /// Writing to register 0 is no-op.
+    #[inline(always)]
+    pub fn write_reg<T: ValueVariant>(&mut self, n: u8, value: T) {
+        if n != 0 {
+            unsafe {
+                core::ptr::copy_nonoverlapping(
+                    (&value as *const T).cast::<u8>(),
+                    self.registers.as_mut_ptr().add(n.into()).cast::<u8>(),
+                    core::mem::size_of::<T>(),
+                );
+            };
+        }
+    }
 }
 
 /// Virtual machine halt error
diff --git a/hbvm/src/vmrun.rs b/hbvm/src/vmrun.rs
index 13bcbc3..152a992 100644
--- a/hbvm/src/vmrun.rs
+++ b/hbvm/src/vmrun.rs
@@ -3,12 +3,7 @@
 //! Have fun
 
 use {
-    super::{
-        bmc::BlockCopier,
-        mem::Memory,
-        value::{Value, ValueVariant},
-        Vm, VmRunError, VmRunOk,
-    },
+    super::{bmc::BlockCopier, mem::Memory, value::ValueVariant, Vm, VmRunError, VmRunOk},
     crate::{
         mem::{addr::AddressOp, Address},
         value::CheckedDivRem,
@@ -534,27 +529,6 @@ where
         }
     }
 
-    /// Read register
-    #[inline(always)]
-    fn read_reg(&self, n: u8) -> Value {
-        unsafe { *self.registers.get_unchecked(n as usize) }
-    }
-
-    /// Write a register.
-    /// Writing to register 0 is no-op.
-    #[inline(always)]
-    fn write_reg<T: ValueVariant>(&mut self, n: u8, value: T) {
-        if n != 0 {
-            unsafe {
-                core::ptr::copy_nonoverlapping(
-                    (&value as *const T).cast::<u8>(),
-                    self.registers.as_mut_ptr().add(n.into()).cast::<u8>(),
-                    core::mem::size_of::<T>(),
-                );
-            };
-        }
-    }
-
     /// Load / Store Address check-computation überfunction
     #[inline(always)]
     unsafe fn ldst_addr_uber(