Method and apparatus for interfacing buses of different sizes

Details Method and apparatus for interfacing buses of different sizes Method and apparatus for interfacing buses of different sizes

1985-06-17

1987-07-28

Eng, David Y.

Boots, shoes, and leggings

G06F 300

Patent

active

046835342

ABSTRACT:
In a data processing system having a first bus sized to accomodate 2.sup.x units of data and a second bus sized to accomodate 2.sup.y units of data, where x and y are positive integers and y is less than or equal to x, a method and apparatus for determining y from the x least significant bits of a control address, concatenated with a decode control bit, and then decoding the (x-y) most significant bits of the x control address bits to determine which of x data unit transceivers coupled between the first and second buses should be enabled.

REFERENCES:
patent: 3978456 (1976-08-01), Moran
patent: 4237543 (1980-12-01), Nishio et al.
patent: 4296469 (1981-10-01), Gunter et al.
patent: 4309754 (1982-01-01), Dinwiddie
patent: 4371928 (1983-02-01), Barlow
patent: 4447878 (1984-05-01), Kinnie et al.

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