HP Vectra Technical Reference Manual page 108

Table 4.9
Physical GID Device Describe Record
Field Type
Offset Description
Driver Header
OOH
Driver header (see Section 2)
D_SOURCE BYTE
10H
Input type and device address
D_HPHILID BYTE
11H
Device ID
D_DESC_MASK BYTE
12H
Describe header byte
D_IO_MASK BYTE
13H
Device I/O descriptor byte
DJDESLMASK
BYTE
14H
Extended describe header byte
D_MAX.-AXIS
BYTE
15H
Maximum number of axes
D_CLASS BYTE
16H
Device class
D_PROMPTS BYTE
17H
Number of button/prompts
D_RESERVED BYTE
18H
Reserved
D_BURST_LEN BYTE
19H
Maximum output burst length
D_WLREG BYTE
1AH
Number of write registers
D_RD_REG
BYTE
1BH
Number of ,read registers
D_TRANSITION BYTE
1CH
Button transitions
D_STATE BYTE
1DH
Current state of the buttons
D_RESOLUTION WORD
1EH
Physical device resolution
D_SIZEJ WORD
20H
Maximum x-axis count
D_SIZE_Y
WORD
22H
Maximum y-axis count
D-ABSJ
WORD
24H
X position data for absolute devices
D-ABS_Y WORD
26H
Y position data for absolute devices
D_REL.X WORD
28H
X delta for relative devices
D_RELY
WORD
2AH
Y delta for relative devices
D-ACCUMJ
WORD
2CH
Reserved
D-ACCUM_Y
WORD
2EH
Reserved
This field is divided into nibbles. Bits
7-4
contain the graphics input
device type. This field is loaded with the low order nibble of the
appropriate physical GIO data type. See table 4.12. Bits 3-0 are the link
address of the physical device.
10 byte of the physical device which last reported data. See table 4.2 for
a list of HP-HIL 10 bytes.
Physical device describe byte. This byte contains information about the
physical device characteristics, see HP-HIL Technical Reference Manual
for more information.
Input System and HP-HIL 99