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Source code


Name: wbc_parallel_master
Created: Jun 22, 2008
Updated: Jun 26, 2008
SVN Updated: Mar 10, 2009

Other project properties

Category: System controller
Language: VHDL
Development status: Alpha
Additional info: Specification done
WishBone Compliant: No
License: GPL


This core is intended to be used as an interface between some functionality in an FPGA and an external microcontroller.
The external microcontroller provides a simple 8bit interface to control some functions within the FPGA. These functions are communicating using a wishbone compatible bus within the FPGA.


- 8 bit external interface to a simple parallel port of a regular microcontroller
- two cycle external bus transfers: first address, then data
- interrupt request flag
- bidirectional external data port
- wishbone compatible master interface to connect internal cores


2008-06-23: Specification document available