8051 Slave to Wishbone Master Interface :: Overview

Project maintainers


Name: wb_mcs51
Created: Mar 3, 2008
Updated: Jul 25, 2008
SVN Updated: Mar 10, 2009
SVN: Browse
Latest version: download
Statistics: View

Other project properties

Category: Other
Language: Verilog
Development status: Stable
Additional info: Design done, FPGA proven
WishBone compliant: Yes
WishBone version: n/a


Interface an 8051-compatible microcontroller with the Wishbone bus.


- Multiplexed 8051 address/data bus to Wishbone Master
- Very simple, very small.
- Since 8051 has no way to add additional wait-states via an external pin, the Wishbone must be fast enough to complete the cycle in time for the 8051.


- Tested with Silicon Labs C8051 Microcontroller and Xilinx Coolrunner2 CPLD.
- Tested with Silicon Labs C8051 Microcontroller and Xilinx Spartan3 FPGA.
- this core is used in the Altair32 Front Panel:

© copyright 1999-2017, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.