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[/] [cpu8080/] [trunk/] [project/] [cpu8080.v] - Diff between revs 2 and 7

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Rev 2 Rev 7
Line 35... Line 35...
//     either use the negative edge, or actually be asynronous logic.         //
//     either use the negative edge, or actually be asynronous logic.         //
//                                                                            //
//                                                                            //
//     A standard read sequence is as follows:                                //
//     A standard read sequence is as follows:                                //
//                                                                            //
//                                                                            //
//     1. At the positive clock edge, readmem, readio or readint is asserted. //
//     1. At the positive clock edge, readmem, readio or readint is asserted. //
//     2. At the positive clock edge (or immediately), the external memory    //
//     2. At the negative clock edge (or immediately), the external memory    //
//        places data onto the data bus.                                      //
//        places data onto the data bus.                                      //
//     3. At the next positive clock edge, the data is sampled, and the read  //
//     3. At the next positive clock edge, the data is sampled, and the read  //
//        Signal is deasserted.                                               //
//        Signal is deasserted.                                               //
//                                                                            //
//                                                                            //
//     A standard write sequence is as follows:                               //
//     A standard write sequence is as follows:                               //

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