Switch M-Module A16 Register Descriptions; Vxi Id Register; Vxi Device Type Register - HP E2270A User's And Scpi Programming Manual

Switch M-Module A16 Register Descriptions

VXI ID Register

Bit Definitions
VXI Device Type
Register
Bit Definitions
Chapter 4
When installed in an HP E2251 Carrier, the Switch M-Modules have the
following A16 register definitions.
Word Address
(Offset from A16 Base)
20 h
06 h
04 h
02 h
00 h
This register contains the M-Module's Device Class, Address Space, and
Manufacturer ID.
Table 4-1. VXI ID Register (Read Only) Base + 00
Bit Number
Bit Name
Device Class -- 00 = memory module, 01 = extended memory, 10 =
message-based device, 11 = register based device. Switch M-Modules are
register-based devices (11).
Address Space -- indicates the M-Modules addressing mode. 00 =
A16/A24, 01 = A16/A32, 10 = reserved, 11 = A16 only. Switch M-Modules
are A16/A24 (00).
Manufacturer ID = 4095 for Hewlett-Packard M-Modules.
This register contains the M-Module's required memory and model code..
Table 4-2. VXI Device Type Register (Read Only) Base + 02
Bit Number
Bit Name
Required Memory -- indicates the amount of memory required by the
Register Name
M-Module Interrupt Control Register
A24 Offset Register
VXI Status/Control Register

VXI Device Type Register

VXI ID Register
15 - 14 13 - 12
Device Class Address Space Manufacturer ID
15 - 12
Required Memory M-Module Model Code
Register Type
Read/Write
Read Only
Read/Write
Read Only
Read Only
h
11 - 00
h
11 - 00
Register Programming 63