HP Vectra Technical Reference Manual page 476

RS-232 Mouse Driver
468
469 01CF 53
PUSH 8X
Save frame counter.
470 0100 52
PUSH OX
Save
471
0101 32 EO
XOR
AH,Al
AH now holds mask of buttons
that hive chlnged.
472
0103 B7 01
MeV BH. 01H
Mask fo r fir s t bu t ton.
473
0105 B9 0003
MOV
CX.3
Number of buttons
to proc •••.
474
475 0108
MBUTTON:
476
0108 8A DC
MOV
Bl.AH :~:~ ~fc~~Ie~:e~h~~?~o~a~~1
,...
477 OlDA
22 OF
AND
Bl. BH
the on. that
chlnged.
478
01DC 74 41
JZ
MNEXT BUTTON
;Skip on
if
no t .
479
OlOE 84 F8
TEST BH,Al
;Determine • t . t e (make or br.ak) of .elected butt
480 OlEO 74 04
J1
MBUl TON_OC",./N
481
482 01E2
MBUTlON UP:
483
484
01E2 B3 80
MOV
Bl,80H
; Set bit 7 (make/break bit)
to 0 (break).
485
OlE4 EB 02
JMP
SHORT MBUTTON 1SFt
48S
487
DIES
MBUTTON DOWN
488
489
OlE6 B3 00
MeV BL. OOH
; Set bit
7
(make/break bit
1
to 1 (make) .
490
491 DIE a
MBU"rrON
ISR
492
OlEa 53
PUSH
BX
493
01E9
~B
09
MeV
BX
I
CX
494
OlES 32 FF
XOR
BH, BH
495
OlEO
FE
CB
OEC BL
496
OlEF
2E: 8A SF 01F7 R
MeV CL, CS : BUTTON_ TAB [BX
J
497
01F 4 5B
POP BX
498
01F5
EB 03
JMP
SHORT BISR2
499
01F7 00
BUTTON TAB
DB 0
Ie f
t
button
500
01 F 8 02
OB
2
middle button
501 01F9 01
DB 1
right button
502 OlFA
BISR2 :
503 OlFA
OA 09
OR
Bl, CL
504
01FC 32 FF
XOR
BH, BH
; cle~r out
bh
505
50S 01FE
50
PUSH AX
; Save regilterl.
507 01FF
53
PUSH
BX
508
0200 51
PUSH
CX
~09
0201 lE
PUSH OS
510
511
~~~eEvent
512
;C re.t e Record
513
514 0202 B5 09
MOV
oH,T KC BUTTON ; Se t
dat a type
51!> 0204
2E 8A 16 0151 R
MeV
Dl, peUO-VEcr NUM
,Get vee tor number of moule "
PGIO.
516 0209
B9 0000
MeV
CX,O - -
; Bu rs t
~s~~t~o(~~~~er
517
020C 8C C8
MeV AX .CS
; Po i nt
header.
518
020E 40
INC
AX
S 19 020F 40
INC
AX
520 0210
SE CO
MeV
ES ,AX
521
0212 84 00
MeV AH,F ISR
; Set 1SR function.
522
0214 Bo 002A
MeV BP, V:=SINPUT
;We're calling the INPUT driver
523
0217 FA
CLI
;Turn off
interrupt. while wI're ou t .
524 0218
CO 6F
INT
HP _ENTRY
525
021A FB
STI
;Re-enable interrupti.
526
527
021B
IF
POP
OS
528 021C 59
POP CX
529
0210 5B
POP
8X
530
021E 58
POP AX
531
532 021F
MNEXT
-
BUTTON:
533
534
021F
DO [7
SHL BH,l
;Move button .ellctor mlsk to nel( t
button.
535
0221 E2 B5
LOOP MBUTTON
536 0223 SA
POP OX
; Re s tore
537 0224 58
POP
BX ;Get
frame counter back.
538
539
; CHECK FOR MOTION
540
541
0225 43
MSI_3 : INC
BX
; Poi nt to f 1 r. t delta X in buffer.
542
0226
2E.
8A 97 013C
MOV OL, TEMP _BUFFER [BX]
543
022B 43
INC BX
;Glt f i fit
delt a Y.
544
022C 2E. 8A B7 013C
MOV DH, TEMP _BUFFER [8X
1
545 0231 43
INC BX
;Add second deU
I
to f 1 r. t .
546 0232
2E: 02
97
013C
ADD
Dl,TEMP BUFFER[BXl
547 0237 43
INC
BX -
;Add .econd delt a
to f i rtt .
548 0238 2E·
02 B7 013C
ADD
DH, TEMP_BUFFER (BX)
549
550
0230 OB 02
MSI_4 : OR ~~t~~
;Check for Ie ro mot 10n.
551
023F 74 IF
JZ
;Skip on i f non. dltected.
552
553
MO~~~~
,.
554
; SEND
ISR EVENT RECORD TO INPUT SYSTEM
555
556
0241 8A C2
MeV Al,Ol
;Convert delta X to
16 bi t valu~
and put
557
0243 98
CBW
;it 1n ISR EVI n t
Record (BX regia t e r)
558 0244
8B 08
MOV BX ,AX
559
0246 8A C6
MOV AL ,oH
;oitto for delta Y (CX
righter).
560
0248
98
caw
561
0249 8B C8
MOV eX,AX
Driver Writer's Guide 467