Rhoads, Steve

Plasma - most MIPS I(TM) opcodes

Hello, 

I am working on Plasma processor to make a multi-processor system out of it connected with a NoC. I would also like to know whether it is capable of handling video applications and does it have VGA support or not. 

Also, are any cache coherency protocols or semaphores implemented or not (in case of parallelism). 

Your assistance is kindly appreciated in advance.

Question regarding VGA support and parallelism

Hi,
I updated my gnu toolchain build script, now it work with MinGW too.
So it can be used to build gnu as, ld, gcc and gdb for windows (I built it with both cygwin and mingw), for linux (I built it with redhat and ubuntu) and for macosx (I built it with 10.6.5).
Below there are the links for built scripts, for Windows toolchain built with MinGW and for MinGW used to built the toolchain for windows.
The toolchain has the latest version of gnu tools (binutils 2.21, newlib 1.19, gcc 4.5.2 and gdb 7.2).
http://dl.dropbox.com/u/159574/build-scripts-20110101.tar.bz2
http://dl.dropbox.com/u/159574/Toolchain_setup.exe
http://dl.dropbox.com/u/159574/MinGW_setup.exe
See you
Santo

gnu toolchain build script for linux, windows and macosx

gnu toolchain build script for linux, windows and macos

Hi,

i made an attempt to setup ethernet link at 100Mbps by changing register 0 
bit 13 in SMI (LAN83C185 datasheet p34) init sequence in ethernet.c 

EthernetInit :
unsigned long data=0x5F802100; //SMI R0 = 100Mbps full duplex

RX and TX_CLK are then clocked at 25Mhz instead of 2.5Mhz
but can't figure out what should be updated in eth_dma.vhd

Any hilight appreciated

Thanks & Regards
OR

ethenet at 100Mbps

Quick Howto
1. Change ALU from "DEFAULT" to something like "OPTIMISED" in mlite_pack.vhd
2. Changed this bit of code in pc_next.vhd ( compare to original )
if reset_in = '1' then
      pc_reg <= ZERO(31 downto 2);
      pc_next := ZERO(31 downto 2);
   elsif rising_edge(clk) then
 	   pc_reg <= pc_next;
	end if;
3. set clk_reg <= CLK_50MHZ

4. Create a new signal called clk_div2 and set
       it to the original 25 Mhz  ... feed to DDR2.
5. Set pipeline = 3, ethernet and cache enabled.

6. Enjoy.

My compilation results on 11.1 ISE indicate a maximum clock rate of 93.39 Mhz .... WOW  :-0

Plasma at 50 Mhz or More

#!/bin/bash
GCC_VER="gcc-4.0.2"
BINUTILS_VER="binutils-2.16.1"
GDB_VER="gdb-6.6"
INSIGHT_VER="insight-6.6"
TARGET="mips"
INSTALL_DIR=$HOME/mips_toolchain


CFLAGS="-g -O2 -mabi=32"
ASFLAGS=$CFLAGS


export PATH=$PATH:$INSTALL_DIR
rm -fr $INSTALL_DIR/*
mkdir $INSTALL_DIR/build
mkdir $INSTALL_DIR/src

cd $INSTALL_DIR/src
echo Downloading $BINUTILS_VER
wget http://ftp.gnu.org/pub/gnu/binutils/$BINUTILS_VER.tar.bz2
echo Uncompressing $BINUTILS_VER
tar xvfj $BINUTILS_VER.tar.bz2 > /dev/null
mv $BINUTILS_VER $INSTALL_DIR/build/$BINUTILS_VER

cd $INSTALL_DIR/build/$BINUTILS_VER
./configure --prefix=$INSTALL_DIR --target=$TARGET-elf
make
make install

#the mips binutils now created so export the mips-elf bin path
export PATH=$PATH:$INSTALL_DIR/bin

cd $INSTALL_DIR/src
echo Downloading $GCC_VER
wget http://ftp.gnu.org/pub/gnu/gcc/$GCC_VER/$GCC_VER.tar.bz2

echo Uncompressing $GCC_VER
tar xvfj $GCC_VER.tar.bz2 > /dev/null
mv $GCC_VER $INSTALL_DIR/build/$GCC_VER

cd $INSTALL_DIR/build
./$GCC_VER/configure --prefix=$INSTALL_DIR --target=$TARGET-elf --enable-languages=c 
make
make install

cd $INSTALL_DIR/src
echo Downloading $GDB_VER
wget http://ftp.gnu.org/pub/gnu/gdb/$GDB_VER.tar.bz2

echo Uncompressing gdb
tar xvfj $GDB_VER.tar.bz2 > /dev/null
mv $GDB_VER $INSTALL_DIR/build/$GDB_VER
	
cd $INSTALL_DIR/build/$GDB_VER
./configure --prefix=$INSTALL_DIR --target=$TARGET-elf
make
make install

cd $INSTALL_DIR/src
echo Downloading $INSIGHT_VER
wget http://mirrors.kernel.org/sources.redhat.com/insight/releases/$INSIGHT_VER.tar.bz2
	
echo Uncompressing insight-gdb
tar xvfj $INSIGHT_VER.tar.bz2 > /dev/null
mv $INSIGHT_VER $INSTALL_DIR/build/$INSIGHT_VER

cd $INSTALL_DIR/build/$INSIGHT_VER
./configure --prefix=$INSTALL_DIR --target=$TARGET-elf
make
make install

cd $HOME
tar -zcvf mips_toolchain.tgz ./mips_toolchain

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Plasma - most MIPS I(TM) opcodes