ps2.inc

来自「这是使用CYPRESS的7C637xx芯片完成USB鼠标的例子。」· INC 代码 · 共 42 行

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

;ps2 clock, data bits are D+ and D-, respectively

PS2_CLOCK_BIT:			equ	20h	
PS2_DATA_BIT:			equ	10h	

;PS2 response byte declarations

PS2_RESEND:			equ	0feh	; Resend response (request resend from host)
PS2_ACK:			equ	0fah	; ACK response
PS2_ERROR:			equ	0fch	; Error response

;
; PS2 commands
;
PS2_RESET_CMD:			equ	0FFh
PS2_RESET_WRAP_MODE_CMD:	equ	0ECh
PS2_SET_SAMPLE_RATE_CMD:	equ	0F3h
PS2_SET_RESOLUTION_CMD:		equ	0E8h

;
; PS2 Mouse Resolution
;
RES1:				equ	00h	; 1 count/mm
RES2:				equ	01h	; 2 counts/mm
RES4:				equ	02h	; 4 counts/mm
RES8:				equ	03h	; 8 counts/mm

;
; PS2 Scaling
;
SCALE2_1:			equ	01h	; scale 2:1
SCALE1_1:			equ	00h	; scale 1:1