Showing papers on "Hardware register published in 1977"

Microprogram memory bank addressing system

Abstract: An apparatus for increasing the capacity and speed of access of a large microprogram read only memory. The apparatus incorporates the use of a four bit control field in a microinstruction word which is set into a hardware register to extend the address beyond the normal range of the addressing capability of the microinstruction word. The four bits stored in the hardward register allow one of a maximum of sixteen read only memory banks to be selected. The word in the selected bank is selected by the normal range. This technique also allows the selection of another of the read only memory banks in one machine cycle.

Verification of hardware designs thru symbolic manipulation

Abstract: This paper describes a method for detecting errors in hardware designs based on algebraic manipulation. The behavior of a hardware system is specified using a non-procedural register transfer language. Similar specifications are provided for each component in the circuit. Using the techniques discussed here it should be possible to determine if the device will function correctly. The problem of detecting races and hazards in this framework is also addressed.

Hardware implementation of two-dimensional digital filters using ROM.

Abstract: The hardware implementation of a two-dimensional (2-D) digital filter using Read Only Memory (ROM) is outlined. Specifically, an implementation scheme for a general all pole 2×2 2-D filter is considered here. The provision for the selection of row or columnwise recursion, and the various sequence of operations involved in the actual processing are discussed.