Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus access regulation
Patent
1997-03-18
1999-12-07
Sheikh, Ayaz R.
Electrical computers and digital data processing systems: input/
Intrasystem connection
Bus access regulation
710 22, 710 52, 710 53, 710 71, 710128, 710129, G06F 1300
Patent
active
059999993
ABSTRACT:
The communication control device allows a plurality of data items to be transferred to and from external devices, such as a CPU and a memory, via an external bus having a different data bus width in DMA (direct memory access) transfer mode. DMA transfer is controlled by the DMA controller provided in the communication control device. The DMA controller produces a signal indicating that a plurality of data items are continual.
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Ajima Yoshiaki
Atsuwata Yoshinori
Fujinaga Takamasa
Homitsu Yoshiaki
Ichige Hiroshi
Hitachi , Ltd.
Hitachi Engineering Co., Ltd
Hitachi Haramachi Electronics Co., Ltd.
Sheikh Ayaz R.
Thlang Eric S.
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