diff --git a/src/net/torvald/tsvm/peripheral/GlassTty.kt b/src/net/torvald/tsvm/peripheral/GlassTty.kt
index b9c3716..e5028e0 100644
--- a/src/net/torvald/tsvm/peripheral/GlassTty.kt
+++ b/src/net/torvald/tsvm/peripheral/GlassTty.kt
@@ -34,19 +34,19 @@ abstract class GlassTty(val TEXT_ROWS: Int, val TEXT_COLS: Int) {
     abstract fun putChar(x: Int, y: Int, text: Byte, foreColour: Byte = ttyFore.toByte(), backColour: Byte = ttyBack.toByte())
 
     fun writeOut(char: Byte) {
-        val printable = acceptChar(char)
-
-        if (printable) {
-            val (x, y) = getCursorPos()
-            putChar(x, y, char)
-            setCursorPos(x + 1, y) // should automatically wrap and advance a line for out-of-bound x-value
-        }
-
         // deal with y-axis out-of-bounds
-        val (cx, cy) = getCursorPos()
+        var (cx, cy) = getCursorPos()
         if (cy >= TEXT_ROWS) {
             scrollUp(cy - TEXT_ROWS + 1)
             setCursorPos(cx, TEXT_ROWS - 1)
+            cy = TEXT_ROWS - 1
+        }
+
+        val printable = acceptChar(char) // this function processes the escape codes and CRLFs
+
+        if (printable) {
+            putChar(cx, cy, char)
+            setCursorPos(cx + 1, cy) // should automatically wrap and advance a line for out-of-bound x-value
         }
     }
 
diff --git a/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt b/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt
index a53332a..0397748 100644
--- a/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt
+++ b/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt
@@ -55,6 +55,7 @@ class GraphicsAdapter(val lcdMode: Boolean = false) : GlassTty(Companion.TEXT_RO
     private val memTextForeOffset = 2980L
     private val memTextBackOffset = 2980L + 2560
     private val memTextOffset = 2980L + 2560 + 2560
+    private val TEXT_AREA_SIZE = TEXT_COLS * TEXT_ROWS
 
     override var rawCursorPos: Int
         get() = spriteAndTextArea.getShort(memTextCursorPosOffset).toInt()
@@ -271,12 +272,52 @@ class GraphicsAdapter(val lcdMode: Boolean = false) : GlassTty(Companion.TEXT_RO
 
     /** New lines are added at the bottom */
     override fun scrollUp(arg: Int) {
-        //TODO("Not yet implemented")
+        val displacement = arg.toLong() * TEXT_COLS
+        UnsafeHelper.memcpy(
+            spriteAndTextArea.ptr + memTextOffset + displacement,
+            spriteAndTextArea.ptr + memTextOffset,
+            TEXT_AREA_SIZE - displacement
+        )
+        UnsafeHelper.memcpy(
+            spriteAndTextArea.ptr + memTextBackOffset + displacement,
+            spriteAndTextArea.ptr + memTextBackOffset,
+            TEXT_AREA_SIZE - displacement
+        )
+        UnsafeHelper.memcpy(
+            spriteAndTextArea.ptr + memTextForeOffset + displacement,
+            spriteAndTextArea.ptr + memTextForeOffset,
+            TEXT_AREA_SIZE - displacement
+        )
+        for (i in 0 until displacement) {
+            spriteAndTextArea[memTextOffset + TEXT_AREA_SIZE - displacement + i] = 0
+            spriteAndTextArea[memTextBackOffset + TEXT_AREA_SIZE - displacement + i] = ttyBack.toByte()
+            spriteAndTextArea[memTextForeOffset + TEXT_AREA_SIZE - displacement + i] = ttyFore.toByte()
+        }
     }
 
     /** New lines are added at the top */
     override fun scrollDown(arg: Int) {
-        TODO("Not yet implemented")
+        val displacement = arg.toLong() * TEXT_COLS
+        UnsafeHelper.memcpy(
+            spriteAndTextArea.ptr + memTextOffset,
+            spriteAndTextArea.ptr + memTextOffset + displacement,
+            TEXT_AREA_SIZE - displacement
+        )
+        UnsafeHelper.memcpy(
+            spriteAndTextArea.ptr + memTextBackOffset,
+            spriteAndTextArea.ptr + memTextBackOffset + displacement,
+            TEXT_AREA_SIZE - displacement
+        )
+        UnsafeHelper.memcpy(
+            spriteAndTextArea.ptr + memTextForeOffset,
+            spriteAndTextArea.ptr + memTextForeOffset + displacement,
+            TEXT_AREA_SIZE - displacement
+        )
+        for (i in 0 until displacement) {
+            spriteAndTextArea[memTextOffset + TEXT_AREA_SIZE + i] = 0
+            spriteAndTextArea[memTextBackOffset + TEXT_AREA_SIZE + i] = ttyBack.toByte()
+            spriteAndTextArea[memTextForeOffset + TEXT_AREA_SIZE + i] = ttyFore.toByte()
+        }
     }
 
     override fun sgrOneArg(arg: Int) {
@@ -295,7 +336,7 @@ class GraphicsAdapter(val lcdMode: Boolean = false) : GlassTty(Companion.TEXT_RO
      * @param arg1 y-position (row)
      * @param arg2 x-position (column) */
     override fun cursorXY(arg1: Int, arg2: Int) {
-        TODO("Not yet implemented")
+        setCursorPos(arg2, arg1)
     }
 
     override fun ringBell() {
@@ -303,7 +344,8 @@ class GraphicsAdapter(val lcdMode: Boolean = false) : GlassTty(Companion.TEXT_RO
     }
 
     override fun insertTab() {
-        TODO("Not yet implemented")
+        val (x, y) = getCursorPos()
+        setCursorPos((x / 8) + 8, y)
     }
 
     override fun crlf() {