The on-board CPU maintains data structures

in shared local memory for buffering measurements and

queueing control commands. Measurement functions are

also supported by a Continuous Measurement Mode in

which measurements are made repeatedly without host CPU

involvement. I/O connections are routed through

high-density connectors located on the front panel with

support for differential and single-ended signal levels. The

user data exchange interface for measurement and

generation modes complies with ANSI/IEEE Standard

754-1985 for 32-bit floating-point arithmetic. Integer modes

operate with two’s complement signed arithmetic and with unsigned arithmetic.

TECHNICAL DESCRIPTION— The VMIVME-2540 ICC is comprised of three sections: the

VMEbus slave DTB interface which arbitrates for the local

CPU resources, the CPU with firmware and support logic,

and the circuitry which implements the measurement and control functions.