12-16
Microcontroller Subsystem
Command Set
12.2.6 Generic Commands
This group of commands perform related functions and are of variable
length.
Opcode
Command
Argument
Returned
Function
0x50
Define Key
Combination Entry
(sequence and
combination_length
)
ack
The built-in keyboard features an 86-key pad.
Normal Sun 4 type 5 keyboards offer up to 106
keys, including a separate numeric keypad, some of
which must be simulated with key-combinations.
In addition, extra ‘hot-keys’ which are used to
control the behavior of the unit. These simulated
keys aredefined in terms of microcontroller action
(e.g. reset). The microcontroller actions which can
be invoke by key-sequence are:
0x90
System Reset
0x91
System Powerdown
0x92
TFT Brightness UP
0x93
TFT Brightness DOWN
0x94
LCD Contrast UP
0x95
LCD Contrast DOWN
0x96
Speaker Volume UP
0x97
Speaker Volume DOWN
0x98
Display Next Status
It should be noted that scan codes in this range and
above are invalid. Complete key-sequences are sent
to the host in the usual way.
Key sequences are given in terms of scancode, the
number returned by a Sun 4 type5 keyboard when
that key is pressed. The microcontroller interprets
key combinations sequentially, i.e. the first key
must be down before the second key is pressed.
0x51
Define String Table
Entry
stringcode length
<string>
ack
To support language variants without the need to
change the microcontroller, the messages displayed
on the status screen are defined by the system
software and downloaded to the microcontroller.
These messages are discriminated by stringcode.
Additional messages, not usually displayed by the
microcontroller, may also be defined by this
method.
Table 12-5 Generic Commands
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Содержание SPARCbook 3 series
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