diff --git a/src/net/torvald/tsvm/peripheral/GlassTty.kt b/src/net/torvald/tsvm/peripheral/GlassTty.kt
index a061594..fe82d5c 100644
--- a/src/net/torvald/tsvm/peripheral/GlassTty.kt
+++ b/src/net/torvald/tsvm/peripheral/GlassTty.kt
@@ -50,8 +50,6 @@ abstract class GlassTty(val TEXT_ROWS: Int, val TEXT_COLS: Int) {
             ttyEscArguments.push(ttyEscArguments.pop() * 10 + (newnum.toInt() - 0x30))
         }
 
-        //TODO()
-
         when (ttyEscState) {
             TTY_ESC_STATE.INITIAL -> {
                 if (char == ESC) {
@@ -117,6 +115,11 @@ abstract class GlassTty(val TEXT_ROWS: Int, val TEXT_COLS: Int) {
                         val arg1 = ttyEscArguments.pop()
                         cursorXY(arg1, arg2)
                     }
+                    'm' -> return accept {
+                        val arg2 = ttyEscArguments.pop()
+                        val arg1 = ttyEscArguments.pop()
+                        sgrTwoArg(arg1, arg2)
+                    }
                     ';' -> ttyEscState = TTY_ESC_STATE.SEP2
                     else -> return reject()
                 }
@@ -140,6 +143,10 @@ abstract class GlassTty(val TEXT_ROWS: Int, val TEXT_COLS: Int) {
                         val arg1 = ttyEscArguments.pop()
                         cursorXY(arg1, 0)
                     }
+                    'm' -> return accept {
+                        val arg1 = ttyEscArguments.pop()
+                        sgrTwoArg(arg1, 0)
+                    }
                     ';' -> {
                         ttyEscArguments.push(0)
                         ttyEscState = TTY_ESC_STATE.SEP2
@@ -176,15 +183,14 @@ abstract class GlassTty(val TEXT_ROWS: Int, val TEXT_COLS: Int) {
     abstract fun scrollUp(arg: Int = 1)
     abstract fun scrollDown(arg: Int = 1)
     abstract fun sgrOneArg(arg: Int = 0)
+    abstract fun sgrTwoArg(arg1: Int, arg2: Int)
     abstract fun sgrThreeArg(arg1: Int, arg2: Int, arg3: Int)
     abstract fun cursorXY(arg1: Int, arg2: Int)
+    abstract fun ringBell()
+    abstract fun insertTab()
 
     private val ESC = 0x1B.toByte()
 
-    private val FORE_DEFAULT = 254
-    private val BACK_DEFAULT = 255
-
-
     private enum class TTY_ESC_STATE {
         INITIAL, ESC, CSI, NUM1, SEP1, NUM2, SEP2, NUM3
     }
@@ -234,16 +240,18 @@ digraph G {
   separator1 -> numeral2 [label="0..9"]
   separator1 -> separator2 [label="; (zero)"]
   separator1 -> CursorPos [label="H (zero)"]
+  separator1 -> SGR2 [label="m (zero)"]
 
   numeral2 -> numeral2 [label="0..9"]
   numeral2 -> CursorPos [label="H"]
-  numeral2 -> separator2 [label=";"]
+  numeral2 -> SGR2 [label="m"]
+  numeral2 -> separator2 [label="; (zero)"]
 
   separator2 -> numeral3 [label="0..9"]
   numeral3 -> numeral3 [label="0..9"]
 
-  separator2 -> "SGR-Colour" [label="m (zero)"]
-  numeral3 -> "SGR-Colour" [label="m"]
+  separator2 -> SGR3 [label="m (zero)"]
+  numeral3 -> SGR3 [label="m"]
 
   ESC [shape=Mdiamond]
   Reset -> end
@@ -260,7 +268,8 @@ digraph G {
   ScrollDown -> end
   CursorPos -> end
   SGR -> end
-  "SGR-Colour" -> end
+  SGR2 -> end
+  SGR3 -> end
   end [shape=Msquare]
 }
 
diff --git a/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt b/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt
index a6642ca..d210e9b 100644
--- a/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt
+++ b/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt
@@ -37,8 +37,8 @@ class GraphicsAdapter(val lcdMode: Boolean = false) : GlassTty(Companion.TEXT_RO
     private var chrWidth = 7f
     private var chrHeight = 14f
 
-    override var ttyFore: Int = 254 // cannot be Byte
-    override var ttyBack: Int = 255 // cannot be Byte
+    override var ttyFore: Int = TTY_FORE_DEFAULT // cannot be Byte
+    override var ttyBack: Int = TTY_BACK_DEFAULT // cannot be Byte
 
     private val textForePixmap = Pixmap(TEXT_COLS, TEXT_ROWS, Pixmap.Format.RGBA8888)
     private val textBackPixmap = Pixmap(TEXT_COLS, TEXT_ROWS, Pixmap.Format.RGBA8888)
@@ -182,14 +182,10 @@ class GraphicsAdapter(val lcdMode: Boolean = false) : GlassTty(Companion.TEXT_RO
         }
     }
 
-    /**
-     * @param from memory address (pointer) on the VM's user memory. Because of how the VM is coded, only the user space is eligible for move.
-     * @param to memory "offset" in Graphics Adapter's memory space, starts from zero.
-     * @param length how many bytes should be moved
-     */
-    /*fun bulkLoad(vm: VM, from: Long, to: Long, length: Long) {
-        UnsafeHelper.unsafe.copyMemory(null, vm.usermem.ptr + from, (framebuffer.pixels as DirectBuffer).address(), to, length)
-    }*/
+    override fun resetTtyStatus() {
+        ttyFore = TTY_FORE_DEFAULT
+        ttyBack = TTY_BACK_DEFAULT
+    }
 
     override fun putChar(x: Int, y: Int, text: Byte, foreColour: Byte, backColour: Byte) {
         val textOff = toTtyTextOffset(x, y)
@@ -364,6 +360,9 @@ class GraphicsAdapter(val lcdMode: Boolean = false) : GlassTty(Companion.TEXT_RO
         const val TEXT_ROWS = 32
         val VRAM_SIZE = 256.kB()
 
+        const val TTY_FORE_DEFAULT = 254
+        const val TTY_BACK_DEFAULT = 255
+
         private val LCD_BASE_COL = Color(0xa1a99cff.toInt())
 
         val DRAW_SHADER_FRAG = """