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This work presents a new HW/SW codesign approach for programmable controllers (ICs or IPs) managing IO devices. A novel cost function is defined to evaluate a device driver's performance and formulate its exact minimization as a zero-one integer linear programming problem. The cost function is used to explore the design trade-off between the code(More)
For a programmable I/O device controller, the allocation of device parameters on I/O registers affects the code size and execution time of its associated I/O device driver. In traditional design flow, the development of device drivers can not begin until the allocation is fixed. This paper presents a new design methodology that allows a designer to seek an(More)
The allocation of device variables on I/O registers affects the code size and performance of an I/O device driver. This work seeks the allocation with the minimal software or hardware cost in a hardware/software codesign environment. The problems of exact minimization under constraints are formulated as zero-one integer linear programming problems.(More)
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