WebSVN – Kolibri OS – Blame – /kernel/trunk/detect/ps2mouse.inc

Rev	Author	Line No.	Line
116	poddubny	1	; for information on PS2 mouse/keyboard programming
		2	; refer to http://www.computer-engineering.org/ps2mouse/
		3	; and http://www.computer-engineering.org/ps2keyboard/
		4	; respectively
		5
33	mario79	6	MouseSearch_PS2:
116	poddubny	7	jmp .begin
33	mario79	8
116	poddubny	9	.kb_cmd_c:
		10	call kb_cmd
		11	.check:
		12	cmp ah, 1
		13	je @f
		14	ret
		15	@@:
		16	add esp, 4 ; return address
		17	jmp .DataInputError
33	mario79	18
116	poddubny	19	.kb_write_c:
		20	call kb_write
		21	jmp .check
33	mario79	22
116	poddubny	23	.kb_read_c:
		24	call kb_read
		25	jmp .check
33	mario79	26
116	poddubny	27	;--------------------------------------------
		28	.begin:
		29	pushad
33	mario79	30
116	poddubny	31	mov bl, 0xAD ; disable keyboard interface
		32	call .kb_cmd_c
33	mario79	33
116	poddubny	34	mov bl, 0xa8 ; enable mouse interface
		35	call .kb_cmd_c
		36
		37	mov bl, 0xd4 ; to mouse
		38	call .kb_cmd_c
		39	mov al, 0xFF ; reset
		40	call .kb_write_c
		41	call .kb_read_c
		42	cmp al, 0xFA ; ack
		43	jne .no_ack
		44
		45	; now the mouse is in Reset Mode
		46	; get the Basic Assurance Test completion code
		47	call .kb_read_c
		48	cmp al, 0xAA
		49	jne .dead_mouse
		50	; get device ID
		51	call .kb_read_c
		52	cmp al, 0x00
		53	jne .unknown_device
		54
		55	; reset completed successfully
		56
		57	; enable mouse interrupt - IRQ12
		58	mov bl, 0x20 ; read command byte
		59	call .kb_cmd_c
		60	call .kb_read_c
		61	or al, 10b ; set mouse IRQ bit
		62	push eax
		63	mov bl, 0x60 ; write command byte
		64	call .kb_cmd_c
		65	pop eax
		66	call .kb_write_c
		67
		68	mov bl, 0xd4 ; to mouse
		69	call .kb_cmd_c
		70	mov al, 0xf4 ; enable data reporting
		71	call .kb_write_c
		72	call .kb_read_c
		73	cmp al, 0xFA
		74	jne .no_ack
		75
		76	; jmp @f
		77	;.set_sample_rate:
		78	; push eax
		79	; mov bl, 0xd4 ; to mouse
		80	; call .kb_cmd_c
		81	; mov al, 0xF3 ; set sample rate
		82	; call .kb_write_c
		83	; call .kb_read_c ; ack
		84	; pop eax
		85	; call .kb_write_c
		86	; call .kb_read_c ; ack
		87	; @@:
		88	; mov eax, 200
		89	; call .set_sample_rate
		90	; mov eax, 100
		91	; call .set_sample_rate
		92	; mov eax, 80
		93	; call .set_sample_rate
		94	; mov bl, 0xd4
		95	; call .kb_cmd_c
		96	; mov al, 0xF2 ; read device type
		97	; call .kb_write_c
		98	; call .kb_read_c ; ack
		99	; call .kb_read_c ; mouse ID
		100	; cmp al, 0x03
		101	; jne .no_scroll
		102	; mov [ps2_mouse_scroll], 1
		103	; ; it'll send 4-byte packets instead of 3-byte ones
		104	; ; the last byte of a packet represents z-axis movement
		105	; .no_scroll:
		106
		107	mov [ps2_mouse_detected], 1
		108	mov bl, 0xAE ; enable keyboard interface
		109	call .kb_cmd_c
		110
		111	mov esi, boot_setmouse_type
		112	call boot_log
		113
		114	jmp .finish
		115
		116
		117	.DataInputError:
		118	.no_ack:
		119	.dead_mouse:
		120	.unknown_device:
		121	mov [ps2_mouse_detected],0
		122	mov bl, 0xA7 ; disable mouse interface
		123	call kb_cmd
		124	mov bl, 0xAE ; enable keyboard interface
		125	call kb_cmd
		126
		127	.finish:
		128	popad

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(root)/kernel/trunk/detect/ps2mouse.inc – Rev 116