diff --git a/acia6551_test.go b/acia6551_test.go
index 54d5062..4f9dd56 100644
--- a/acia6551_test.go
+++ b/acia6551_test.go
@@ -18,6 +18,10 @@ func TestNewAcia6551(t *testing.T) {
 	assert.Equal(t, 0x4, acia.Size())
 }
 
+func TestAciaAsMemory(t *testing.T) {
+	assert.Implements(t, (*Memory)(nil), new(Acia6551))
+}
+
 func TestAciaReset(t *testing.T) {
 	a := AciaSubject()
 
diff --git a/ram_test.go b/ram_test.go
index 5262aa4..b341b39 100644
--- a/ram_test.go
+++ b/ram_test.go
@@ -6,6 +6,10 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
+func TestRamAsMemory(t *testing.T) {
+	assert.Implements(t, (*Memory)(nil), new(Ram))
+}
+
 func TestRamSize(t *testing.T) {
 	ram, _ := NewRam(0x8000) // 32 kB
 	assert.Equal(t, 0x8000, ram.Size())
diff --git a/rom.go b/rom.go
index 9c8e248..73463a7 100644
--- a/rom.go
+++ b/rom.go
@@ -29,10 +29,10 @@ func (r *Rom) Size() uint16 {
 	return uint16(len(r.data))
 }
 
-func (r *Rom) Read(address uint16) byte {
+func (r *Rom) ReadByte(address uint16) byte {
 	return r.data[address]
 }
 
-func (r *Rom) Write(address uint16, data byte) {
+func (r *Rom) WriteByte(address uint16, data byte) {
 	panic(fmt.Errorf("Trying to write to ROM at 0x%04X", address))
 }
diff --git a/rom_test.go b/rom_test.go
index 58a24b3..c6a5426 100644
--- a/rom_test.go
+++ b/rom_test.go
@@ -1,17 +1,22 @@
 package i6502
 
 import (
-	"github.com/stretchr/testify/assert"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
+func TestRomAsMemory(t *testing.T) {
+	assert.Implements(t, (*Memory)(nil), new(Rom))
+}
+
 func Test8kRoms(t *testing.T) {
 	rom, err := NewRom("test/8kb.rom")
 
 	assert.Nil(t, err)
 	assert.Equal(t, 0x2000, rom.Size())
-	assert.Equal(t, 0x01, rom.Read(0x0000))
-	assert.Equal(t, 0xFF, rom.Read(0x2000-1))
+	assert.Equal(t, 0x01, rom.ReadByte(0x0000))
+	assert.Equal(t, 0xFF, rom.ReadByte(0x2000-1))
 }
 
 func TestRomWritePanic(t *testing.T) {
@@ -19,7 +24,7 @@ func TestRomWritePanic(t *testing.T) {
 
 	// Writing to rom should panic
 	assert.Panics(t, func() {
-		rom.Write(0x1337, 0x42)
+		rom.WriteByte(0x1337, 0x42)
 	}, "Writing to Rom should panic")
 }
 
@@ -28,8 +33,8 @@ func Test16kRom(t *testing.T) {
 
 	assert.Nil(t, err)
 	assert.Equal(t, 0x4000, rom.Size())
-	assert.Equal(t, 0x01, rom.Read(0x0000))
-	assert.Equal(t, 0xFF, rom.Read(0x4000-1))
+	assert.Equal(t, 0x01, rom.ReadByte(0x0000))
+	assert.Equal(t, 0xFF, rom.ReadByte(0x4000-1))
 }
 
 func TestRomNotFound(t *testing.T) {