Changeset 47313 in vbox

Timestamp:

Jul 22, 2013 3:35:32 PM (11 years ago)

Author:

vboxsync

Message:

PS2K: Do not lose SysReq key.

File:

• trunk/src/VBox/Devices/Input/PS2K.cpp (modified) (3 diffs)

trunk/src/VBox/Devices/Input/PS2K.cpp

@@ -420 +420 @@
     /* 98 */ {UNAS, UNAS, UNAS,     0, T_U }, /* Key Unk: Keyboard Lang 9 */
     /* 99 */ {UNAS, UNAS, UNAS,     0, T_U }, /* Key Unk: Keyboard Alternate Erase */
-    /* 9A */ {UNAS, UNAS, UNAS,     0, T_U }, /* Key Unk: Keyboard SysReq/Attention */
+    /* 9A */ {UNAS, UNAS, UNAS,     0, T_U }, /* Key Unk: Keyboard SysReq/Attention (Note 3) */
     /* 9B */ {UNAS, UNAS, UNAS,     0, T_U }, /* Key Unk: Keyboard Cancel */
     /* 9C */ {UNAS, UNAS, UNAS,     0, T_U }, /* Key Unk: Keyboard Clear */
@@ -433 +433 @@
 };
 
+/* 
+ * Note 1: The behavior of these keys depends on the state of modifier keys
+ * at the time the key was pressed.
+ *
+ * Note 2: The key label depends on the national version of the keyboard.
+ *
+ * Note 3: Certain keys which have their own PS/2 scancodes do not exist on
+ * USB keyboards; the SysReq key is an example. The SysReq key scancode needs
+ * to be translated to the Print Screen HID usage code. The HID usage to PS/2
+ * scancode conversion then generates the correct sequence depending on the
+ * keyboard state.
+ */
+
 /* USB to PS/2 conversion table for modifier keys. */
 static const   key_def   aPS2ModKeys[] = {
@@ -472 +485 @@
     0x3f, 0x40, 0x41, 0x42, 0x43, 0x53, 0x47, 0x5f, /* 40-47 */
     0x60, 0x61, 0x56, 0x5c, 0x5d, 0x5e, 0x57, 0x59, /* 48-4F */
-    0x5a, 0x5b, 0x62, 0x63, 0x00, 0x00, 0x64, 0x44, /* 50-57 */
+    0x5a, 0x5b, 0x62, 0x63, 0x46, 0x00, 0x64, 0x44, /* 50-57 */
     0x45, 0x67, 0x00, 0x00, 0x8c, 0x00, 0x00, 0x00, /* 58-5F */
     0x00, 0x00, 0x00, 0x00, 0x68, 0x69, 0x6a, 0x6b, /* 60-67 */