PowerMax

User Interface Messages

Contents:

Function/s	Message function type
	Messages from applications to the user interface
00000000 to 000000FF	Keyboard
00010000 to 0001FFFF	Video
00020000 to 0002FFFF	Mouse
00030000 to 0003FFFF	Sound
00040000 to 0004FFFF	Joystick
	Messages from device support code to the user interface
00100000 to 0010FFFF	Keyboard
00110000 to 0011FFFF	Video
00120000 to 0012FFFF	Mouse
00130000 to 0013FFFF	Sound
00140000 to 0014FFFF	Joystick
	Messages from user interface to applications
00104000	Key pressed
FFFFF000	Screen just became active
FFFFF100	Screen no longer active
FFFFFF02	Connected to user interface
	Messages from user interface to device support code
00012080 to 00017F80	Update video screen
	General messages from applications to user interface
FFFFFE00	Disconnect from user interface
FFFFFF01	Connect to user interface

Accessing the user interface

The user interface is accessed via messaging. Any messages returned as a response by the user interface (to applications or drivers) are described with the message they are a response to. If anyone wants demonstration code for using the user interface, please ask.

Messages from user interface to applications

00104000 - Key pressed

Data1 Keypress packet
Data2 -

If you elect to use the keyboard you'll be sent these.

FFFFF000 - Screen just became active

Data1 Connection ID
Data2 Time (tickHigh)

FFFFF100 - Screen no longer active

Data1 Connection ID
Data2 Time (tickHigh)

FFFFFF02 - Connected to user interface

Data1 Connection ID
Data2 -

This is a response to function 0xFFFFFF01.

Messages from user interface to device support code

00012080 to 00017F80 - Update video screen

Data1 Size of screen buffer
Data2 Address of buffer

Function number in this range indicate different video modes.

General messages from applications

FFFFFE00 - Disconnect from user interface

Data1 Connection ID
Data2 -

Used to close a connection.

FFFFFF01 - Connect to user interface

Data1 Device flags
Data2 -

Used to open a connection to the user interface.

Device flags:
Bit    Meaning when '1'
   0      Use keyboard
   1      Use video
   2      Use mouse
   3      Use sound
   4      Use joystick

Response message (FFFFFF02)

Data1 Connection ID
Data2 -

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