[LinuxBIOS] ROM emulator with FPGA

Quux pawn2be.wild at yahoo.de
Wed Mar 21 17:14:22 CET 2007

is there a "standard" logic-analyzer design for this board like there is 
for some similar boards ?    --Q

Bari Ari schrieb:
> I can get some boards and make some adapters.
> They include a XC3S500E-4FG320C FPGA with 500K logic gates.
> It seems like we can use the PicoBlaze cpu core:
> http://www.xilinx.com/bvdocs/ipcenter/data_sheet/picoblaze_productbrief.pdf
> The PicoBlaze instruction set can be found here:
> http://www.xilinx.com/bvdocs/userguides/ug129.pdf
> There is a free C compiler found here:
> http://www.poderico.co.uk/
> A simulator and assembler for the picoblaze, with a graphical user 
> interface, and an assembler for the picoblaze, with a command line 
> interface:
> http://www.xs4all.nl/~marksix/
> KPicoSim is an IDE for the picoblaze microcontroller.KPicoSim is a 
> development environment for the Xilinx PicoBlaze-3 soft-core processor 
> for the KDE Desktop (Linux).The environment has an editor with syntax 
> highlighting (based on the popular katepart), compiler, simulator and an 
> export functions to VHDL, HEX and MEM files.
> If it looks better to use a 32 bit cpu core and run uClinux we can use 
> the MicroBlaze core. I'll have to see how well it fits into the 500K 
> gates of the FPGA.
> http://www.xilinx.com/xlnx/xebiz/designResources/ip_product_details.jsp?key=micro_blaze
> uClinux for the MicroBlaze
> http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux/
> FLASH drivers aren't too complicated. Having the board emulate flash is 
> mostly done in hardware. Ethernet would require a tcp\ip stack. We have 
> a choice between doing everything in C on an 8-bit micro or uClinux on a 
> 32-bit cpu.
> I have time do develop the hardware for this, but not much for software. 
> I'll post all the schematics, regster info. and VHDL to the LinuxBIOS 
> site. Let me know what everyone else thinks and prefers to use for the 
> software end.

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