Fujitsu lifebook application panel
Technical information and drivers for nx platforms

Technical Details - Obsolete

Attention this page is obsolete. I discovered that the application panel is attached to the PIIX4 chip, on the system management bus. You might want to look at the new tech page.

Well, the debugging is still in progress and we don't (yet) know how it works exactly, but some of what we know is shown below. The information may actually be inaccurate, so be careful when experimenting. When you discover something, please mail me.

Currently, the driver uses direct outb commands, not exactly according to the information below. If you want working code and it doens't work with the following information, try copying it from the source available from the download page

Enable application panel hardware

Before the application panel hardware can be accessed, it has to be enabled. When turning on the c4110, it is enabled by default. However, when windows is shut down, the btnhnd driver disables it. It can be enabled by the following code:


  enable:


  outb 0x477, inb(0x477)&0xf7

Output: LED and LCD

The i/o ports that have a central place in all this are 0xff80-0xff8f. For output (lcd&led), the following commands are executed:


  output:


  outb baseport+4, device

  outb baseport+5, value&0xff

  outb baseport+6, value>>8

  outb baseport+3, minor



  outb baseport+2, inb(baseport+2)&0x1c|0x0c

  call applysub

baseport is equal to 0xff80 for the Fujitsu C-4110. The device is either 0x30 for the LED and 0x34 for the LCD. The subroutine applysub will be defined later. Below is a table with observed values obtained by debugging:

device	minor	value
0x34	6	tracknumber*0x100	set lcdnumber
0x34	1	0
0x30	10	0x8080	led on
	0x0f	0
	0x0f	0x100
	0	0x10	led off

I managed to figure out some sequences for the led (device=0x30).

minor=0x02: master switch. value=0000 for led off, value=0x0080 for led on
minor=0x10: 2nd switch. value=0000 for led off, value=0x0080 for led on
minor=0x0f: blinking. value=0000 for blinking on, value=0x0080 pause blinking
minor=0x11: set blink speed, value=0xMM00, where the blink time t is determined as follows: t=2^(4-MM/16).

When minor=0x00, the blink speed of the led increases drastically and I don't know how to turn it of. minors 0x0f,0x10 and 0x02 still work. After playing with some sequences I discovered that a minor of 11 could set the blinking speed.

Input: Application keys

For input, the code is somewhat different:


  input:


  outb baseport+4, device | 1

  outb baseport+3, switchpos



  outb baseport+2,inb(baseport+2)&0x1c|0x0c

  call applysub

  return inb(baseport+6)*0x100 + inb(baseport+5)

The value device is 0x34. The value of switchpos depends on the position of the left switch you want to read. If the left switch is set on Application, the value of switchpos is 8, if the switch is set on CDPlayer, the value is 1. So you have to check the button status for both the Application and CDPlayer position. The output values are as follows:

Application mode		CDPlayer mode
Key	Value	Key	Value
A	0x04	Stop/Eject	0x08
B	0x08	Play/Pause	0x20
Internet	0x02	Backward	0x01
E-mail	0x01	Forward	0x02

applysub

This is called after or in the middle of every i/o operation. It needed a name, so I called it appysub. It has some VxD calls in it (in the windows driver of course), Begin_Nest_Exec, Resume_Exec and End_Nest_Exec. I have no clue what they do, so if you have, please mail me. Here is the code that I use and works for the LED:


applysub:

  for loop=0 to 32

    outb baseport,   inb(baseport  ) | 0x1e

    outb baseport+1, inb(baseport+1) | 0x3c

    outb baseport+2, inb(baseport+2) | 0x40

    

waitloop:

    al=0

    while (al&0x1c == 0)

      al = inb(baseport)&0x1f;

      if ( al==2 ) goto done

    endwh

  

  next

  

done:

  outb baseport,   inb(baseport  ) | 2