HP Vectra Technical Reference Manual page 481

RS-232 Mouse Driver
0419
0419 80 FE 40
041C 74 3E
041E 80 FE 41
0421
74 39
0423 80 FE 42
0426
74 08
0428 80 FE 43
042B 74 03
042D 84 FE
042F
C3
Absolute movement
movement is r:
~
~
~
o
TYPE • T KC BUTTON
?
aojult 0 sTATt
&
0 TRANSITION
live nlw x pOlition
(OLD - NEW)
Relative movi •
lNEW -
OLD)
I.VI
new )( rlltt
VI
ah. RS_FAIL
bx.ds:D ABS X
bx ,ds :D-ABS-X
bx - -
dl :D_REL_X, bx
dh, T KC BUTTON
IhorT button isr
cmp
j
I
xc hg
• ub
neg
mov
cmp
dh,T REL08
relat ive 8 bit movlmlnt
i
e
I
h
0
r T r elmo v
I
cmp dh, T REL1~
relat ive 16 bi t movement
j e s h
0
r T r elmo v e
cmp
dh, T ABSof
absolute 8 bit movement
j e shorT abs move
cmp
dh, T
ABSl~
absolute 18 bit movement
j e s ho rT abl_move
If none of the above devicel, then this is a bad input device
---------------------------------------
, return RS FAIL
; return to-main driver
b I_move:
mov
ret
page
...........................
We mUlt invert the Y axis to put into INDUSTRY STANDARD coordinate space.
MUlt convert 'Y' coordinatl luch that negative movement 11 upward (oPPolite
of HP-HIL definition.)
-- Set BX,CX (x,y ABSOLUTE movement) for 8vent record when done, then pu.
event record to parent driver.
(BX) is 'X' HP-HIL coordinate.
.~~~l.~:.~~~
•••
!.~~~.~~:~~l
•
D_SIZE_V - ABS_Y(hphil)
PARAMETERS
ON ENTRY.
AH • F ISR
DH • D-TYPE
DL • SOURCE Vector Index
For
B~~~~n Ev:~tn~~;y~~d:hl~~~~lR~~~;~i~eig~fy~~d.d~l~ci~~Tfg~)rd
BX. Button transition information
bits O.. 6. buttons
bitl7: 0 up transition
1 down transition
For Mo v e me n t Eve n t (
G IDE v en t Re cor d, 0 TYPE • T REL08, T REL16 ,
- T-ABS08, or T ABS16).
BX· AXIS-O IX) Movement in RAW data form-(SIGN EXTENDED,
it
necessary)
CX· AXIS-l Y) Movement in RAW data form (SIGN EXTENDED, if necessary)
ON EXIT:
AH • Return Codl (SET BY PARENT Drivlr)
REGISTERS ALTERED: aX,bx.cx
DEF I NI TION MOD I FICAT ION HI STORY
VERSION:
DESCRIPTION OF CHANGES:
A mo v e me n t
0
c cur red. I f t his was a nab
5 0
1 ute de vic e
t hit mo ved, the n ad jus t the r e la t i vel
0
cat ion fie 1 din the de sc rib e ric
0
rd.
If it was a relative device, then adjust the absolute location field
in the describe record.
BX,CX have X,Y movement respectively.
cau5e~ ~~a~~~~~ ~~P~~s~~viI~ ~~;D~v~~rS~~:1ae~~no~a~r~~~~rt~~nWhiCh
the D_STATE and D
~RANSITION
fields will be adjusted and the parent
d r i v e r will be c aIle d i mm e d i a te 1 y .
If a the event WII a movement. this function will update the
absolute position field if the device is a relative device or will
update the relative position field if it's an absolute device It
.u~:~~*l~:~*~~H*l~:*~~~~~r*~~:~:~*l~*~andle
the movement event.
; NOTE: The POID driver takes HP-HIL 'Y' ads data and translates
it
into INDUSTRY-STANDARD s~ace data (flips the Y ax1l).
~~D~~~R~~;Tg~st:i~~w~~~r~~
he upward direction, while
***************************************
page
pgid_h r p roc near
--
-
-- ---------------------------
See if this was a button event
80 FE 09
74 57
87 lE 0014
2B 1E 0014
F7 DB
89 lE 0018
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472 Driver Writer's Guide