diff --git a/src/mame/drivers/tandy2k.cpp b/src/mame/drivers/tandy2k.cpp
index 77546de9ab5..bd278450449 100644
--- a/src/mame/drivers/tandy2k.cpp
+++ b/src/mame/drivers/tandy2k.cpp
@@ -335,6 +335,39 @@ void tandy2k_state::vpac_mem(address_map &map)
 static INPUT_PORTS_START( tandy2k )
 	// defined in machine/tandy2kb.c
 	PORT_INCLUDE(pc_keyboard)
+
+	PORT_MODIFY("pc_keyboard_2")
+	PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Cursor Up") PORT_CODE(KEYCODE_UP) /*                             29  A9 */
+	PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Cursor Left") PORT_CODE(KEYCODE_LEFT) /*                             2B  AB */
+
+	PORT_MODIFY("pc_keyboard_3")
+	PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Caps") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE   /* Caps Lock                   3A  BA */
+
+	PORT_MODIFY("pc_keyboard_4")
+	PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("NumLock") PORT_CODE(KEYCODE_NUMLOCK) PORT_TOGGLE /* Num Lock                    45  C5 */
+	/* Hold corresponds to Scroll Lock, but pauses the system when pressed - leaving unmapped by default to avoid conflicting with the UI Toggle key */
+	PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Hold")     /*                            46  C6 */
+	PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 7 \\") PORT_CODE(KEYCODE_7_PAD) /* Keypad 7                    47  C7 */
+	PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 8 ~") PORT_CODE(KEYCODE_8_PAD) /* Keypad 8                    48  C8 */
+	PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 9 (PgUp)") PORT_CODE(KEYCODE_9_PAD) /* Keypad 9  (PgUp)            49  C9 */
+	PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Cursor Down") PORT_CODE(KEYCODE_DOWN) /*                             4A  CA */
+	PORT_BIT(0x0800, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 4 |") PORT_CODE(KEYCODE_4_PAD) /* Keypad 4                    4B  CB */
+	PORT_BIT(0x2000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 6") PORT_CODE(KEYCODE_6_PAD) /* Keypad 6                    4D  CD */
+	PORT_BIT(0x4000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Cursor Right") PORT_CODE(KEYCODE_RIGHT) /*                             4E  CE */
+	PORT_BIT(0x8000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 1 (End)") PORT_CODE(KEYCODE_1_PAD) /* Keypad 1  (End)             4F  CF */
+
+	PORT_MODIFY("pc_keyboard_5")
+	PORT_BIT(0x0001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 2 `") PORT_CODE(KEYCODE_2_PAD) /* Keypad 2                    50  D0 */
+	PORT_BIT(0x0002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 3 (PgDn)") PORT_CODE(KEYCODE_3_PAD) /* Keypad 3  (PgDn)            51  D1 */
+	PORT_BIT(0x0004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP 0") PORT_CODE(KEYCODE_0_PAD) /* Keypad 0                    52  D2 */
+	PORT_BIT(0x0008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("KP - (Del)") PORT_CODE(KEYCODE_MINUS_PAD) /* - Delete                    53  D3 */
+	PORT_BIT(0x0010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Break") PORT_CODE(KEYCODE_STOP) /* Break                       54  D4 */
+	PORT_BIT(0x0020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("+ Insert") PORT_CODE(KEYCODE_PLUS_PAD) /* + Insert                    55  D5 */
+	PORT_BIT(0x0040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(".") PORT_CODE(KEYCODE_DEL_PAD) /* .                           56  D6 */
+	PORT_BIT(0x0080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Enter") PORT_CODE(KEYCODE_ENTER_PAD) /* Enter                       57  D7 */
+	PORT_BIT(0x0100, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Home") PORT_CODE(KEYCODE_HOME) /* HOME                        58  D8 */
+	PORT_BIT(0x0200, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F11") PORT_CODE(KEYCODE_F11) /* F11                         59  D9 */
+	PORT_BIT(0x0400, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F12") PORT_CODE(KEYCODE_F12) /* F12                         5a  Da */
 INPUT_PORTS_END
 
 // Video