diff options
Diffstat (limited to 'ADB.txt')
| -rw-r--r-- | ADB.txt | 43 |
1 files changed, 34 insertions, 9 deletions
@@ -3,11 +3,14 @@ ADB Protocol Resources --------- +ADB - The Untold Story: Space Aliens Ate My Mouse + http://developer.apple.com/legacy/mac/library/#technotes/hw/hw_01.html Apple IIgs Hardware Reference Second Edition [p80(Chapter6 p121)] ftp://ftp.apple.asimov.net/pub/apple_II/documentation/Apple%20IIgs%20Hardware%20Reference.pdf ADB Keycode http://72.0.193.250/Documentation/macppc/adbkeycodes/ http://m0115.web.fc2.com/m0115.jpg + [Inside Macintosh volume V, pages 191-192] ADB Signaling http://kbdbabel.sourceforge.net/doc/kbd_signaling_pcxt_ps2_adb.pdf ADB Overview & History @@ -61,9 +64,9 @@ Commands 3: mice Registers: - 0: application(keyobard/mice use to store its data.) + 0: application(keyobard uses this to store its data.) 1: application - 2: application + 2: application(keyboard uses this for LEDs and state of modifiers) 3: status and command @@ -111,15 +114,17 @@ Communication keep low for 300us to request. -Keyboard data(register0) - This 16bit data can contains 2 keycodes and 2 released flags. - First keycode is palced in upper nibble. When one keyocode is sent, - lower nibble is 0xFF. +Keyboard Data(Register0) + This 16bit data can contains two keycodes and two released flags. + First keycode is palced in upper byte. When one keyocode is sent, + lower byte is 0xFF. Release flag is 1 when key is released. - 15 14 . . . . . 8 7 6 . . . . . 0 - | |keycode1 | |keycode2 - |released(1) |released(1) + 1514 . . . . . 8 7 6 . . . . . 0 + | | | | | | | | | +-+-+-+-+-+-+- Keycode2 + | | | | | | | | +--------------- Released2(1 when the key is released) + | +-+-+-+-+-+-+----------------- Keycode1 + +------------------------------- Released1(1 when the key is released) Keycodes: Scancode consists of 7bit keycode and 1bit release flag. @@ -131,4 +136,24 @@ Keyboard data(register0) the switch has a special scancode 0x7F7F, so you can also read from Data line. It uses 0xFFFF for release scancode. +Keyboard LEDs & state of keys(Register2) + This register hold current state of three LEDs and nine keys. + The state of LEDs can be changed by sending Listen command. + + 1514 . . . . . . 7 6 5 . 3 2 1 0 + | | | | | | | | | | | | | | | +- LED1(NumLock) + | | | | | | | | | | | | | | +--- LED2(CapsLock) + | | | | | | | | | | | | | +----- LED3(ScrollLock) + | | | | | | | | | | +-+-+------- Reserved + | | | | | | | | | +------------- ScrollLock + | | | | | | | | +--------------- NumLock + | | | | | | | +----------------- Apple/Command + | | | | | | +------------------- Option + | | | | | +--------------------- Shift + | | | | +----------------------- Control + | | | +------------------------- Reset/Power + | | +--------------------------- CapsLock + | +----------------------------- Delete + +------------------------------- Reserved + END_OF_ADB |