1260-00C0 pages

RACAL INSTRUMENTS™ 1260-00C
GPIB Slot 0 Controller
Full VXI Resource
Manager and Slot 0
Capability
Seamless Integration of
VXI bus Instruments into
Existing IEEE-STD-488
Systems
Control VXIbus TTLTRG,
ECLTRG Lines
Enables Existing IEEESTD-488 Controllers and
Software to Control
VXIbus Instruments
Control Register-based
and VMEbus Devices
Read and Write System
Memory
GPIB/VXIbus Capability
Racal Instruments 1260-00C controller/interface board links the industrystandard IEEE-STD-488 bus (GPIB) and the VXIbus. The 1260-00C
transparently converts IEEE-STD-488 signals and protocols to VXIbus
instrument signals and protocols. This allows an IEEE-STD-488 controller
to direct instruments in a VXIbus chassis in the same way it controls
IEEE-STD-488 devices. This enables significant downsizing of systems
without replacing the host controller.
Slot 0/Resource Manager Capabilities
As a VXIbus System Slot 0 and resource Manager (RM), the 1260-00C
performs such functions as VXIbus device identification, system address
map configuration, static and/or dynamic (switchless) configuration,
system self-test management, commander/servant hierarchy mapping,
and initiation of normal operation. Additionally, the 1260-00C provides
reading and writing VXIbus memory, register-based devices, VME devices
and controlling VXIbus trigger lines and protocols. The 1260-00C can
also function as a VXIbus commander or servant. It can be used, for
example, as a VXIbus commander in Slot 0 of a VXIbus mainframe,
and can perform the VXIbus power-up resource management duties to
configure VXIbus devices within the system.
As a VXIbus master, the 1260-00C can access the required A16 and
A24 address spaces using D16 and D08 (EO) data transfers. Onboard jumpers allow the 1260-00C to use any of the four bus request
levels. As a VXIbus slave, the 1260-00C has A32, A24, A17, D17 and
D08 (EO) capabilities.
With its configurable switches, all or a portion of the on-board RAM
can be dual-ported to the VXIbus in A32 or A24 space. Bi-directional
block transfers between GPIB and VXIbus memory at rates up to 350
kbytes per second can be achieved.