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US 5,295,247 AGranted
Local IDE (integrated drive electronics) bus architecture
AssigneeMicronics Computers Inc.
InventorsWen L. Chang, Justin S. Wang, Dean Chang
Life of this patent
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Abstract
A local bus IDE (Integrated Drive Electronics) interface bus architecture provides a direct connection to enable a fast interface between CPU and IDE drives. Also, a programmable command pulse width and I/O cycle recovery time is implemented at the IDE port to provide a finely tuned tuned access cycle time for different drives and provide optimum performance. Also, there is the capability of implementing existing hard disk interfaces with future drives.
Claims4
A local bus integrated drive electronics (IDE) architecture comprising:
- an IDE interface, said IDE interface including a data port with an address for transferring data, a first command port with addresses for transferring a first set of commands, and a second command port for receiving a second set of commands;
- a hard disk drive coupled to said IDE interface;
- control means coupled to said second command port;
- a CPU coupled to a local bus, said local bus for transmitting data and commands operating at a first clock rate;
- an industry standard architecture (ISA) bus for transmitting data and commands operating at a second clock rate;
- means for interfacing said ISA bus to said local bus of said CPU;
- means for coupling said data port of said IDE interface to said local bus of said CPU;
- means for coupling said first command port of said IDE interface to said ISA bus;
- means for transferring said data and said second set of commands between said hard disk drive and said CPU in proportion to said first clock rate;
- and
- means for transferring said first set of commands between said CPU and said hard disk drive in proportion to said second clock rate.
8 more elements
Dependencies are inferred from the claim text.