G - Physics – 06 – F
Patent
G - Physics
06
F
354/225, 354/233
G06F 15/16 (2006.01) G01R 31/3185 (2006.01) G06F 13/22 (2006.01) G06F 11/22 (2006.01)
Patent
CA 1211853
Abstract Disclosed is a scan apparatus which provides an interface and control signals between a secondary computer and data locations in a host computer. The scan apparatus functions independently of the normal operation of the host computer. Scan-out is performed transparently to the operation of the host computer. The host computer is organized into a plu- rality of functional units. Each functional unit is con- structed of circuits on semiconductor chips. The semicon- ductor chips are organized in blocks. In the present in- vention, each block within the host computer includes a mul- timode scan apparatus which controls the scan operations in connection with that block. The scan apparatus in each block is connected to the secondary computer by clock and scan lines. The scan apparatus on each block includes a multimode sequencer which is controlled by the secondary computer and independently of the operation of the host com- puter, executes the scan sequences for performing the scan operations associated with the block.
461855
Merrick Dale F.
Si Stephen S.c.
Amdahl Corporation
Gowling Lafleur Henderson Llp
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