[Eric-develop] We can read scan codes in Win32 :/

[Ismail P. <paz...@my...>]

Guys,

    I wrote a code in Win32 platform, that can read from keyboard =
microcontroller' s port 0x60 (96), and can write there too. However, =
actually, I did not try to write anything to keyboard...

    The thing that it makes now is simple. There is a function in a C =
code, that is reading from 0x60, this is the last pressed key's scan =
code. then there is another function to match the scan codes to ascii =
codes is called... We can read scan code, convert it into ascii...

What I want to do exactly?

I want to first, check if keyboard is present. Then, check if keyboard =
buffer is full. If it is, what is it? Did kernel processed it? If no, it =
is not full (=3Dempty), keep tracking it. When user presses a key, =
keyboard writes some code (I dont remember it, it is in my bookmarks.), =
and we invoke kernel' s keyread function (I examined test directory in =
CVSROOT, and I realized that io.cpp!! Dammit guys, I have been searching =
for such thing for days, and it was on there, under my hands for 3 weeks =
:p :) Kernel then starts to check when key will be released, and is =
there another key being pressed. Meanwhile, kernel' s keyboard driver's =
asciimatch function matches scancode to ascii character, and checks for =
kernel' s command list for any special meaning of the key (e.g. =
alt+function keys in FreeBSD console changes ttys). There is also one =
more point here: is key pressed alone? or pressed with modifier keys =
(alt, altgr, ctrl, shift)... Keyboard then stops reading, when user =
releases key kernel stops.=20

The Mach Thing:

I tried but failed to download MachOS. I don' t know why, I could not do =
it. I could not find server (I have found address from yahoo! and =
cmu.edu). I want to have it. You guys have any URLs? Is there keyboard =
stuff inside Mach kernel currently? (PS: I need source, there are =
hundereds of sites offering *free* suggestions, knowledge, 2 lines of =
examples...)

Establishing Our Development Environment:

I would like to have source code of the kernel released. And I need that =
bootloader also, I think. I want to migrate current kernel code with =
keyboard*ed* code. Because, I cannot try this code neither in my home, =
nor in work. Computer fails to stop interrupt serverices, or, I have a =
trouble with the code that I cannot see. I have grabbed two codes: one =
from a Linux source, implementation of "unsigned char inb(short)" =
function, and one from Eric' s "test2/io.cpp" in CVS tree.

After this point, I mean reading from keyboard, we can simply try to =
code in Eric environment. I believe we can use something at least we can =
write our names to screen with keyboard :p Anyway, seriously, we need a =
loader, I think it will be ELF, is this right? If it is so, we can use =
lots of compatible binaries.

Finally, guys, I want to be enlightened about kernel' s current status, =
and utility (i.e. can we use it for a few stupid commands?). I am so =
excited right now, and I realized I really wrote this mail very =
untidy....=20

Summary: We have a Win32 source/binary to read from keyboard, the =
scancode, and convert it into ASCII.. Win32 codes are available in C and =
Assembler (MASM) formats. Note that assembler source can only read codes =
and saves them into stack. We don' t have ANSI C/C++, AT&T assembler =
codes right now. I hope we will :/ Because it did not work in my FreeBSD =
box, and a Red Hat Linux box in my school. It failed with "Bus error", =
at the line where we try to read from 0x60. Kernels might be restricting =
us to read, or my code is wrong. Code is at below, take a look.

short port =3D 0x69;
unsigned char nKeyScanCode=3D0;

// Initialization is cool

__asm__ __volatile__("inb %%dx,%%al;outb %%al,$0x80":"=3Da" =
(nKeyScanCode):"d" (port));

there is another code, i grabbed from somewhere else (I dunno where it =
was, but from a Linux source site)

         __asm__ __volatile__("in%B0 (%1)": "=3Da" (nKeyScanCode) : "d" =
(port));


So, what can we do now?