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Note
28 Configuring the HP E1399A
Table 2-6. Device Type Register Bit Definitions
Data Bit(s)
DB0-DB7
DB8-DB15
Table 2-7. Device Type Register Parts
Reference
HP Part Number
Designator
RP1
1810-0279
U10
1820-3975
SP2
3101-3066
Each bit in the Device Type Register is normally pulled high (1) by RP1.
Figure 2-9. Device Type Register
The bits can be reconfigured using the DIP switch. The range of device
types for an A24 or A32 device is 0 - 4095. For an A16 device, all 16 bits
are available for specifying the device type for a range of 0- 65535. The
user will need to add the required buffer and resistor network to implement
the full A16 device type range. The default factory setting is FFxxh.
Per the VXIbus Specification (OBSERVATION C.2.6), device types 0-255
are reserved for register-based Slot 0 devices.
Refer to the VXIbus Specification, Section C.2.1.1.2 for detailed
information concerning Device Type Register implementation restrictions.
Table 2-6 shows the Device Type Register bit definitions.
Definitions
Device Type or Model Code (Range = 0-4095)
Set to "1"
Description
Resistor Network, 9- by 4.7kOhm
IC, 74HC541 Octal Line Driver
Switch,DIP,8-Rocker .OSA 30VDC
Chapter 2
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