kbm_util.asm

Cypress 的(鼠标+键盘)复合设备汇编源程序

;========================================================================
; 01/14/98	 v0.1		hth
;========================================================================

;##### Start Module kbm_util
;## Keyboard Mouse Utilities
;## Rev 0.10 - Initial Release

;*****
; us_delay
;
; Delays N microseconds, where 'N' is the value in A. Note that the actual
; delay, including Call/Return and internal overhead is N + 1.92uS. A value
; of N = 0 will be interpretted as N = 256.
;
; Parameters:	A reg = N
; Returns:		None
; Side Effects:	None
;*****

nop
nop
nop
nop
nop
us_delay:
	mov	[mouse_delayV],a
	XPAGEOFF
dly:	dec	[mouse_delayV]
	jnz	dly
	XPAGEON
dly1:	ret

;##
;##### End Module kbm_utils