Shift circuit which need no transformation between nine-bit-byte

Details Shift circuit which need no transformation between nine-bit-byte Shift circuit which need no transformation between nine-bit-byte

1982-06-23

1984-09-25

Fears, Terrell W.

Static information storage and retrieval

Read/write circuit

Having particular data buffer or latch

365 78, G11C 1300

Patent

active

044738943

ABSTRACT:
For use in a packed nine-bit-byte data processing system, a shift circuit comprises a shifter for subjecting a datum given by a bit sequence of nine-bit bytes to a shift of a preselected whole number N of digits or, more particularly, a shift of [9N/2] and [9(N-1)/2+5] bits when the whole number is an even and an odd integer, respectively. Before written in a register, the shifted bit sequence is edited by an editor into an edited bit sequence wherein each prescribed binary bit in each nine-bit byte is produced as it stands when the whole number is even and is placed, when the whole number is odd, at a next more significant bit than a four-bit byte which is next more significant in the shifted sequence than that binary bit.

REFERENCES:
patent: 4395764 (1983-07-01), Matsue

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