发明名称 |
System for interfacing ISA compatible computer devices with non-ISA buses using secondary DMA controllers and glue logic circuit |
摘要 |
A system and method that allows ISA-compatible DMA devices (60) to communicate over non-ISA buses such as the VL bus (20) and a PCI bus (30). In a computer system (10) with a non-ISA bus, the present invention couples a secondary set of DMA controllers (50) in the same input/output space and a glue logic circuit (70) to the non-ISA bus in the computer system (10) to allow the ISA-compatible DMA device (60) to operate over the non-ISA bus. The secondary set of DMA controllers (50) provides the support for an ISA-compatible DMA device (60) to perform DMA transactions and the glue logic circuit (70) directs the DMA controller accesses to the proper place in the computer system (10).
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申请公布号 |
US5954802(A) |
申请公布日期 |
1999.09.21 |
申请号 |
US19970792608 |
申请日期 |
1997.01.31 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
GRIFFITH, JENNI |
分类号 |
G06F13/40;(IPC1-7):G06F13/28 |
主分类号 |
G06F13/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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