84 lines
1.4 KiB
PHP
84 lines
1.4 KiB
PHP
;; File: kbd.inc
|
|
;;
|
|
;; Usefull links:
|
|
;; - <https://wiki.osdev.org/PS/2_Keyboard>
|
|
|
|
KBD_STATP = 0x64
|
|
KBD_ATAP = 0x60
|
|
KBS_DIB = 0x01
|
|
|
|
;; function: kbd_probe
|
|
;;
|
|
;; Out:
|
|
;; AL - 0 if not found
|
|
kbd_probe:
|
|
mov al, CMOS_INSTALLED_EQUIPMENT
|
|
out CMOS_COMMAND, al
|
|
in al, CMOS_DATA
|
|
and al, 0x4
|
|
ret
|
|
|
|
kbd_init:
|
|
call kbd_probe
|
|
or al, al
|
|
jz @f
|
|
|
|
mov esi, szMsgKbdFound
|
|
call klog
|
|
@@:
|
|
ret
|
|
|
|
kbd_open:
|
|
ret
|
|
|
|
kbd_close:
|
|
ret
|
|
|
|
kbd_getc:
|
|
in al, KBD_STATP
|
|
and al, KBS_DIB
|
|
jz @f
|
|
in al, KBD_ATAP
|
|
mov ah, al
|
|
and ah, 0x80
|
|
jnz @f
|
|
mov edx, aKbdNormalMap
|
|
movzx eax, al
|
|
add edx, eax
|
|
mov byte al, [edx]
|
|
call cga_putc
|
|
@@:
|
|
ret
|
|
|
|
kbd_irq:
|
|
pusha
|
|
|
|
mov al, PIC_EOI
|
|
out PIC1_COMMAND, al
|
|
|
|
call kbd_getc
|
|
|
|
popa
|
|
iret
|
|
|
|
szMsgKbdFound db "KBD: found", 0
|
|
|
|
aKbdNormalMap:
|
|
db 0, 0x1B, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0'
|
|
db '-', '=', 0x08, 0x09, 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i'
|
|
db 'o', 'p', '[', ']', LF, 0, 'a', 's', 'd', 'f', 'g', 'h'
|
|
db 'j', 'k', 'l', ';', "'", '`', 0, '\', 'z', 'x', 'c', 'v'
|
|
db 'b', 'n', 'm', ',', '.', '/', 0, '*', 0, ' ', 0, 0
|
|
db 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '7'
|
|
db '8', '9', '-', '4', '5', '6', '+', '1', '2', '3', '0', '.'
|
|
db 0, 0, 0, 0, 0, 0, 0, 0
|
|
|
|
kbd_device:
|
|
db 'kbd', 0, 0, 0, 0, 0
|
|
dd kbd_init
|
|
|
|
kbd_cdevws:
|
|
dd 0
|
|
dd 0
|
|
dd 0
|