ps2.inc

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;========================================================================
;   FILE: ps2.inc
;
;   This file contains ps2-specific delarations
;
;========================================================================
BAT_PASS:               EQU 0AAh
BAT_FAIL:               EQU 055h


;status bits for ps2 command processor

PS2_1MS:                EQU	1			
PS2_RESEND:	            EQU	2			
PS2_XMIT:	            EQU	4			
PS2_RESEND_REQUESTED:   EQU	8		
PS2_SCAN_KBD:	        EQU	10			


PS2_ENABLED_INTERRUPTS:	EQU	4	; 1msec interrupt enabled

;PS2 response byte declarations
PS2_RSND:	    EQU	0FEh	;Resend response (request resend from host)
PS2_ACK:		EQU	0FAh	;ACK response
PS2_ECHO:		EQU	0EEh	;ECHO response

PS2_SCAN_INTERVAL:	EQU	4	;4msec between key scans
PS2_SEND_INTERVAL:	equ	2	;2msec between key code transmissions

;define key types for scan set 3. These are carefully chosen to match
;the enumerations in the ps2-host commands 0xf7 - 0xfd (set all keys, and
;set key type).

TYPEMATIC:                      EQU 0               
MAKE_BREAK:                     EQU 1
MAKE:                           EQU 2
TYPEMATIC_MAKE_BREAK:           EQU 3

SCAN_SET_1:                     EQU 1
SCAN_SET_2:                     EQU 2
SCAN_SET_3:                     EQU 3

KEYBOARD_ID_BIT:		equ 01h ; bit 0 denotes keyboard type in option byte

;------------------------------------
; Line Status
;------------------------------------
; CLK   DATA        Status
;------------------------------------
;   0   0           Inhibit
;   0   1           Inhibit
;   1   0           Require to send
;   1   1           Idle
;------------------------------------
PS2LineMask:            EQU     PS2_CLOCK_BIT+PS2_DATA_BIT
PS2InhibitMask:         EQU     PS2_CLOCK_BIT
PS2Inhibit:             EQU     00h
PS2RequestToSend:       EQU     PS2_CLOCK_BIT
PS2Idle:                EQU     PS2_CLOCK_BIT+PS2_DATA_BIT