URL
https://opencores.org/ocsvn/cpu8080/cpu8080/trunk
[/] [cpu8080/] [trunk/] [project/] [cpu8080.v] - Diff between revs 2 and 7
Go to most recent revision |
Show entire file |
Details |
Blame |
View Log
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: //
|
© copyright 1999-2025
OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.