Raggedstone1 is a low-cost Spartan3 FPGA based PCI development board made by Enterpoint Ltd.
Here is the product page: http://www.enterpoint.co.uk/moelbryn/raggedstone1.html

A colleague and I have the board working using the pci32tlite_oc core from opencores.org

I have written an example linux driver for it that can set hexadecimal numbers to the board's 7segment display.

Download:

• rs1linuxdriver Version 0.0.2 (released 20060302)
  
  • List of changes

Compilation/Installation/Usage: here.

Older Versions:

• rs1linuxdriver Version 0.0.1 (released 20060118)

Version 0.0.3 (released 20070725) Archive contains VHDL Code, ISE Webpack 9.1i (SP3) Project.
Download here: rs1_7seg_pci-0.0.3.tar.gz

Changes:

• Missing PCI lines REQ and GNT are now High-Z (tristated) so they won't keep systems from booting. (also see next point)
• similar fixes were also applied to PCI lines STOP, PERR, SERR, and INT due to optimizations by the Xilinx tools those lines were optimized away and thus the inputs/outputs were pulled down (per default, see bitgen option -g UnusedPin:PullDown).
  • The same (unused pins pulled down to GND) happened to REQ and GNT as well. The fix now uses the constraint 'SAVE NET FLAG' (see http://toolbox.xilinx.com/docsan/xilinx7/books/data/docs/cgd/cgd0162_123.html for details).

I also put some info about how to prevent unused pins from being optimized away here

Version 0.0.2 (released 20060302)

Archive contains VHDL Code, ISE Webpack 7.1i Project.
Download here: rs1_7seg_pci-0.0.2.tar.gz
(sorry, I forgot to upload the file. Its now available 20060328)

Version 0.0.2 should load fine on both Windows and Linux, ISE Webpack Versions 7.1i and 8.1i.
(I've tested it on Linux/ISE 7.1, Linux/ISE 8.1, and Windows/ISE 8.1)

Changes:

• converted the VHDL library “onalib” into a regular VHDL file. This should fix errors with onalib.
• NO functional changes. (Thats why I didn't include a .bit or .mcs file)

For more info see comments on Version 0.0.1 below.

Version 0.0.1

Archive contains VHDL Code, ISE Webpack 7.1i Project, bit file, prom file.
Download here: rs1_7seg_pci-0.0.1.tar.gz

Note: Most Win* archivers should be able to handle .tar.gz files.
If you don't have one, check out the free 7-zip

After unpacking the archive, start Xilinx ISE Webpack, and open the ISE Project file via File→Open Project.
Point it to rs1pcidemo.ise in subdirectory rs1_7seg+pci-x.y.z/project/rs1pcidemo.

The supplied PROM file pci_7seg.mcs can be programmed directly into the XCF02S Prom onboard the Raggedstone1.

Oh, BTW, the board is currently using a PCI Vendor ID from Altera. We haven't changed it yet since we downloaded the core from opencores.org

Under Linux, the board can be identified by looking at /proc/pci:

Bus  1, device  10, function  0:
  Bridge: PCI device 1172:0100 (Altera Corporation) (rev 130).
    IRQ 9.
    Non-prefetchable 32 bit memory at 0xd4000000 [0xd5ffffff].

I tested the code in four computers:

• an old P75 with a PCI/ISA riser card. It didn't work there, the computer wouldn't even boot.
• an PIII 700 with an i810 chipset. It works without problems
• another PIII (more info TBD.)
• an Intel P4 3GHz, on an Intel D865GBF board
  • PCI bridge: Intel Corporation 82820 820 (Camino 2) Chipset PCI (rev 194).
  • Kernel 2.4.4 + RTLinux 3.1

Others tested it on:

• Athlon XP 2200+
  • PCI bridge: VIA Technologies, Inc. VT8235 PCI Bridge
  • Linux Kernel 2.6.15
  • (Thanks to James of http://www.pimpmyrock.com/PimpMyRock/website-creation )

• Intel Desktop Board D845GEBV2 / Pentium4, 2.4GHz / Intel 82845G chipset
• Asus A7V / AMD Duron 750MHz / VIA VT8363 chipset
• Gigabyte GA-7DXR+ / AthlonXP 1800+ / AMD-760 chipset (VT82C686A southbridge)
• Fujitsu-Siemens Esprimo P5600 / Athlon64 3400+ / SiS 761 (SiS SG86C202 PCI bridge)
• Fujitsu-Siemens Scenico L (VKT266)/ AMD AthlonXP 1500+/ VIA VT8366 (Apollo KT266)
• EPoX EP-7KXA / AMD Athlon / VIA Apollo KX-133
• Dell Dimension 4100 / Intel PentiumIII / Intel 815 E

Maybe the following tutorial “FPGA design from scratch” is helpful exploring the world of FPGAs:

• http://svenand.blogdrive.com/archive/40.html

I'd appreciate feedback…
You can contact me via email, my address can be found here: WhoAmI