Subversion Repositories zipcpu

Compare Revisions

  • This comparison shows the changes necessary to convert path
    from Rev 63 to Rev 64
    Reverse comparison

Rev 63 → Rev 64

110,6 → 110,17
// Be aware, though, it will drop your performance by a factor between 2x and
// 3x.
// We can either pipeline our fetches, or issue one fetch at a time. Pipelined
// fetches are more complicated and therefore use more FPGA resources, while
// single fetches will cause the CPU to stall for about 5 stalls each
// instruction cycle, effectively reducing the instruction count per clock to
// about 0.2. However, the area cost may be worth it. Consider:
// Slice LUTs ZipSystem ZipCPU
// Single Fetching 2521 1734
// Pipelined fetching 2796 2046
// (These numbers may be dated, but should still be representative ...)
// I recommend only defining this if you "need" to, if area is tight and
// speed isn't as important. Otherwise, just leave this undefined.

powered by: WebSVN 2.1.0

© copyright 1999-2024, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.