Home.md

@@ -2,32 +2,42 @@
 
 This project is an effort to introduce a configuration space
 specification for internal FPGA buses (interconnects, crossbars). Our
-initial target is Wishbone, but the specification is generic.
+initial target is Wishbone, but the specification is generic. The output
+of this project is called SDB (self describing bus) even if the project
+(thus the repository) is called fpga-config-space.
 
-The aim is being able to enumerate the cores that are live in the
-current fpga binary, either from the host computer or from the internal
-soft-core CPU in the FPGA itself.
+SDB allows to enumerate the cores that are live in the current fpga
+binary, either from the host computer or from the internal soft-core CPU
+in the FPGA itself.
 
-The current specification is already in use in some of our designs.
-
-[sdb implementation guidelines](sdb-implementation-guidelines)
+The current specification is already in use in some of our designs. And
+we have some [sdb implementation
+guidelines](sdb-implementation-guidelines)
 
 ## Specification
 
-The [specification is available in PDF
+Version 1.0 of SDB the specification is available in [PDF
 format](https://www.ohwr.org/project/fpga-config-space/wikis/Documents/SDB-specification-June-2012), together with the header
 file.  
 It has been built from the repository of this project, so you can get
 the git tree instead and run Latex on it.
 
+## Interrupt support
+
+We chose, for the time being, to not describe interrupts. After some
+drafts for one such description, Wesley Terpstra  
+explained why legacy interrupts should be avoided in a SoC design and
+MSI-like interrupts don't need an external description.  
+His complete reasoning is here: [Interrupts](Interrupts)
+
 ## Code
 
 The implementation as VHDL is part of the respective projects
 (currently, Etherbone and White Rabbit Core).
 
-Core for the Linux kernel (both as a bus driver and a file system
-driver) is being written. In the repository you find the initial work
-that has been done months ago as a proof of concept.
+Code for the Linux kernel (both as a bus driver and a file system
+driver) is being written. Available code  
+is part of this repository, but it's still work in progress.
 
 ## Status