kbm_defs.asm

Cypress 的(鼠标+键盘)复合设备汇编源程序

;========================================================================
; 010/15/98   bth
; 
; changed ps2_active_flagC to ps2_tx_flagC and moved macros out of this file.
;
;========================================================================
; 01/14/98	 v0.1		hth
;
; 02/10/99   added mouse_packet_lenV for 3d mouse support
;========================================================================

;##### START Module kbm_defs #####
;## Keyboard Mouse Definitions
;## Rev 0.10 - Initial Release

;*****
;***** This file contains constant, RAM variable and MACRO definitions for the
;***** Cypress PS/2 mouse interface code (kb_mouse). The following conventions are
;***** used:
;*****	Names for literal constants are identified by the suffix "C"
;*****	Names for RAM variables are identified by the suffix "V"
;*****	Macro names are all upper case (e.g., SETC vs. Setc)
;*****
;***** References to microcontroller I/O registers use the names defined in the main
;***** keyboard code.


;**********
; Mouse I/O definitions
;**********
IO_mouse_port:		equ	3	;mouse is on port 3
ps2_clkC:		equ	10h	;PS/2 clock is bit 6
ps2_dataC:		equ	20h	;PS/2 data is bit 7
MP_configC:		equ	cfh	;all other bits of port 3 are written as 1's
P3_PS2_MASK:	equ	(ps2_clkC | ps2_dataC)	; bits[7:6] for PS/2 data and clock

ps2_InhibitC:		equ	(ps2_dataC | MP_configC)  ;PS/2 inhibit (CLK=0, DATA=1)
ps2_StartC:		equ	MP_configC		  ;PS/2 Xmit Start condx (CLK=0, DATA=0)
ps2_Data0C:		equ	(ps2_clkC | MP_configC)	  ;PS/2 data 0
ps2_Data1C:		equ	(ps2_clkC | ps2_dataC | MP_configC)  ;PS/2 data 1


;**********
; Mouse Constant definitions
;**********

ps2_timeoutC:		equ	25	;ps/2 timeout period in mS
mouse_reset_timoutC:	equ	50	;reset response timeout period in "ps2_timoutC"
mouse_data_sizeC:	equ	3	;mouse data packet size in bytes


;*** PS/2 Mouse Command & Response definitions
CMD_EnblC:		equ	0f4h	;Mouse Enable
CMD_DsblC:		equ	0f5h	;Mouse Disable
CMD_ResetC:		equ	0ffh	;Mouse Reset
CMD_PollC:		equ	0ebh	;Mouse data poll command
CMD_RemoteC:		equ	0f0h	;Place mouse in Remote mode
CMD_StreamC:		equ	0eah	;Place mouse in Stream mode

RESP_DiagOKC:	equ	0aah	;Diagnostic Success response
RESP_ResendC:	equ	0feh	;Resend response (resend from mouse)
RESP_AckC:	equ	0fah	;ACK response
RESP_ErrorC:	equ	0fch	;Error response


;**********
; Mouse RAM Allocations
;**********


mouse_mScntV:	equ	mouse_RAM_baseC+0	;1mS timeout counter
mouse_flagsV:	equ	mouse_RAM_baseC+1	;various flag bits, as detailed below
mouse_idV:        equ   mouse_RAM_baseC+2 ;mouse report ID
mouse_packetV:	equ	mouse_RAM_baseC+3	;received mouse packet storage (4 bytes)
last_mouse_packetV:equ	mouse_RAM_baseC+7	;previous received mouse packet storage (1 byte)
mouse_work0V:	equ	mouse_RAM_baseC+8	;work register 0
mouse_delayV:	equ	mouse_RAM_baseC+9	;delay-generator work register
ps2_stateV:	equ	mouse_RAM_baseC+10	;PS/2 bus state variable
mouse_dataV:	equ	mouse_RAM_baseC+11	;mouse xmit/rcv data working register
mouse_resendV:	equ	mouse_RAM_baseC+12	;mouse xmit resend data holding register
mouse_stateV:	equ	mouse_RAM_baseC+13	;mouse state variable
mouse_connect_stateV:	equ  mouse_RAM_baseC+14 	;
mouse_packet_lenV: equ   mouse_RAM_baseC+15 

mouse_poll_intervalV: equ mouse_RAM_baseC+16
mouse_send_flagV:     equ mouse_RAM_baseC+17

mouse_ramsizeC:	equ	18			;size of mouse RAM


;********** Mouse Flags Byte (mouse_flagsV) bit definitions
mouse_conx_flagC:	equ	1		;bit 0: Mouse Connected
ps2_parity_flagC:	equ	2		;bit 1: parity flag 
ps2_tfail_flagC:	equ	4		;bit 2: PS/2 transmission failure flag
ps2_tx_flagC:   	equ	8		;bit 3: PS/2 transmit complete flag
mouse_rcv_flagC:	equ	10h		;bit 4: Mouse data received flag
ps2_rfail_flagC:	equ	20h		;bit 5: PS/2 receive failure flag
ps2_timout_flagC:	equ	40h		;bit 6: PS/2 bus timeout flag
mouse_suspend_flagC:	equ	80h		;bit 7: Mouse suspend flag


;* all ps2 error flags
ps2_error_flagsC:	equ	(ps2_tfail_flagC | ps2_rfail_flagC | ps2_timout_flagC)

;**********
; Macro Definitions
;***********


;*****
; SETC
;	Sets C bit
;*****
;MACRO	SETC
;	cpl	A	;Set C-bit
;	cpl	A	;
			;*** END MACRO SETC
;ENDM


;##### END Module mouse_defs #####