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阅读：1495回复：4
ARM9处理器能扩展ISA总线吗?
想用ARM9处理器扩展ISA总线,有没有可能?
各位讨论一下? |
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沙发#
发布于：2005-06-09 12:40
ISA Bus is like the ROM/SRAM, so it can be connect to the ROM interface directly.
Interrupt can connect to the GPIO directly, but more work must be done in software. DMA can use if the ARM ROM interface support DMA(normally it is not available in most ARM chip). |
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板凳#
发布于：2005-06-11 01:41
ISA的速度是8M的，如果把它挂到存储器总线上，会不会严重影响系统的性能呢？
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地板#
发布于：2005-06-21 11:59
No at all, you need to acess the ISA in very little time.
And you can use variable timinng, if rom interface support that. |
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地下室#
发布于：2005-06-22 20:34
谢谢.我去试试
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