System for simulating block transfer with slave module incapable

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3642383, 3642405, 364260, 3642621, 36492799, 3649418, 364937, 3649427, 3649571, 3649602, 364DIG1, 364DIG2, G06F 1332, G06F 1342

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051858657

ABSTRACT:
Interface ciruitry for accomplishing a block transfer of information over a NuBus protocol bus having associated therewith a plurality of individual computer modules through the steps of testing to determine whether an addressed module is capable of accomplishing a NuBus protocol block transfer, conducting such a transfer if that module is capable of accomplishing a NuBus protocol block transfer, locking the bus if that module is not capable of accomplishing a NuBus protocol block transfer, conducting a series of individual data transfer operations during the period the bus is locked, terminating the individual operations, and unlocking the bus.

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patent: 4261033 (1981-04-01), Lemay et al.
patent: 4719563 (1988-01-01), Kosuge et al.
patent: 4751634 (1988-06-01), Burrus, Jr. et al.
patent: 4836416 (1983-05-01), Giltner et al.
patent: 4920483 (1990-04-01), Pogue et al.
patent: 4947368 (1990-08-01), Donaldson et al.

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