HT82M33A datasheet(5/13 Pages) HOLTEK

5 / 13 page

Functional Description

Serial mouse

• Data format of 3D Serial mouse

1200 bps, N, 7, 1, single direction

Bit No.

1st word

2nd word

3rd word

Y5Y4Y3

4th word

Notes: X7~X0: -128<X<127, (2’s complement)

Y7~Y0: -128<Y<127, (2’s complement)

Z3~Z0: -8<Z<7, (2’s complement)

Button status:1=pressed, 0=released

• Win 95 Plug and Play ID fields

For compatibility with the old serial mouse

drivers, all mouse-compatible pointing de-

vices must restrict themselves to a 6-bit char-

acter set, for all fields except the mouse ID.

Therefore, all old-mouse-compatible strings

are limited to values of 0

×00 to 0×3f; character

strings are ASCII codes from 0

×20 to 0×5f,

offset by subtracting 0

×20.

Microsoft mode

Field Name

Size

Field Data

Description

Old Mouse ID

Identifies a mouse for old Microsoft

mode drivers

Compatible with Microsoft

Intelli mouse

5A, 40, 00, 00, 00

“Z@”

Begin PnP

“(” indicates PnP IDs will follow

PnP Rev

01, 24

Identifiers PnP version 1.0

EISA ID

28, 34, 2B

“HTK” (A mouse company)

Product ID

10, 10, 10, 11

“0001” (Unique product identifier)

Extended

“\”

Class Name

3C, 2D, 2F, 35, 33, 25

“\MOUSE” fits a defined Windows 95

class name

Driver ID

3C, 30, 2E, 30, 10,

26, 10, 21

“\PNP0F0A” fits a defined Windows 95

Microsoft mouse compatible ID

Checksum

19, 10

Checksum of all characters from begin

PnP to End PnP, exclusive of the

checksum characters themselves.

End PnP

“)” indicates PnP IDs complete

HT82M33A

3rd Mar ’99

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