Subversion Repositories zpu

/trunk/zpu/ChangeLog Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream

/trunk/zpu/hdl/zealot/roms/hello_bram.vhdl Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream

/trunk/zpu/hdl/zealot/roms/hello_bram.vhdl

trunk/zpu/hdl/zealot/roms/hello_bram.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/roms/dmips_bram.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/roms/dmips_bram.vhdl =================================================================== --- trunk/zpu/hdl/zealot/roms/dmips_bram.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/roms/dmips_bram.vhdl (revision 77)

trunk/zpu/hdl/zealot/roms/dmips_bram.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/roms/rom_pkg.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/roms/rom_pkg.vhdl =================================================================== --- trunk/zpu/hdl/zealot/roms/rom_pkg.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/roms/rom_pkg.vhdl (revision 77)

trunk/zpu/hdl/zealot/roms/rom_pkg.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/devices/phi_io.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/devices/phi_io.vhdl =================================================================== --- trunk/zpu/hdl/zealot/devices/phi_io.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/devices/phi_io.vhdl (revision 77)

trunk/zpu/hdl/zealot/devices/phi_io.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/devices/rx_unit.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/devices/rx_unit.vhdl =================================================================== --- trunk/zpu/hdl/zealot/devices/rx_unit.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/devices/rx_unit.vhdl (revision 77)

trunk/zpu/hdl/zealot/devices/rx_unit.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/devices/tx_unit.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/devices/tx_unit.vhdl =================================================================== --- trunk/zpu/hdl/zealot/devices/tx_unit.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/devices/tx_unit.vhdl (revision 77)

trunk/zpu/hdl/zealot/devices/tx_unit.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/devices/br_gen.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/devices/br_gen.vhdl =================================================================== --- trunk/zpu/hdl/zealot/devices/br_gen.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/devices/br_gen.vhdl (revision 77)

trunk/zpu/hdl/zealot/devices/br_gen.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/devices/txt_util.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/devices/txt_util.vhdl =================================================================== --- trunk/zpu/hdl/zealot/devices/txt_util.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/devices/txt_util.vhdl (revision 77)

trunk/zpu/hdl/zealot/devices/txt_util.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/devices/trace.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/devices/trace.vhdl =================================================================== --- trunk/zpu/hdl/zealot/devices/trace.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/devices/trace.vhdl (revision 77)

trunk/zpu/hdl/zealot/devices/trace.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/devices/timer.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/devices/timer.vhdl =================================================================== --- trunk/zpu/hdl/zealot/devices/timer.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/devices/timer.vhdl (revision 77)

trunk/zpu/hdl/zealot/devices/timer.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/helpers/zpu_med1.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/helpers/zpu_med1.vhdl =================================================================== --- trunk/zpu/hdl/zealot/helpers/zpu_med1.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/helpers/zpu_med1.vhdl (revision 77)

trunk/zpu/hdl/zealot/helpers/zpu_med1.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/testbenches/dmips_med1_tb.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/testbenches/dmips_med1_tb.vhdl =================================================================== --- trunk/zpu/hdl/zealot/testbenches/dmips_med1_tb.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/testbenches/dmips_med1_tb.vhdl (revision 77)

trunk/zpu/hdl/zealot/testbenches/dmips_med1_tb.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/BSD =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/BSD =================================================================== --- trunk/zpu/hdl/zealot/BSD (nonexistent) +++ trunk/zpu/hdl/zealot/BSD (revision 77)

trunk/zpu/hdl/zealot/BSD Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/GPL_V2 =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/GPL_V2 =================================================================== --- trunk/zpu/hdl/zealot/GPL_V2 (nonexistent) +++ trunk/zpu/hdl/zealot/GPL_V2 (revision 77)

trunk/zpu/hdl/zealot/GPL_V2 Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/zpu_medium.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/zpu_medium.vhdl =================================================================== --- trunk/zpu/hdl/zealot/zpu_medium.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/zpu_medium.vhdl (revision 77)

trunk/zpu/hdl/zealot/zpu_medium.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/0README.txt =================================================================== --- trunk/zpu/hdl/zealot/0README.txt (nonexistent) +++ trunk/zpu/hdl/zealot/0README.txt (revision 77) @@ -0,0 +1,152 @@ +This is a test release of the ZPU. +ZPU is a 32 bits stack CPU. This package contains a VHDL implementation +suitable for FPGAs. It was tested using a Xilinx Spartan 3 1500 FPGA. + +The author of the ZPU is Øyvind Harboe (oyvind.harboe zylin.com) and the +license is the BSD one. Portions of this package were developed by Salvador E. +Tropea (salvador inti.gob.ar) and others. Some portions are under the GPL +license. + +Øyvind also added a ZPU target to the gcc/gdb. + +For more information about the ZPU core please visit: +http://www.zylin.com/zpu.htm +http://www.opencores.org/projects.cgi/web/zpu/overview + +What are the files? +------------------- + +zpu_medium.vhdl +ZPU CPU, medium version. + +zpu_pkg.vhdl +Package containing the declarations for the ZPU library. + +devices/phi_io.vhdl +The very basic I/O peripherals needed for the standard C library. It includes a +timer (64 bits clock counter) and an UART (8N1 without FIFO). +This is known as the PHI I/O layout, this implementation isn't complete. Only +the above mentioned peripherals are available. + +devices/timer.vhdl +64 bits clock counter maped by the PHI I/O. + +devices/trace.vhdl +This is used for debug purposes. The ZPU have a debug port to connect this +module. It can generate an execution trace log during the simulation. + +devices/txt_util.vhdl +Useful text handling routines for the simulation. + +devices/br_gen.vhdl +Fixed baud rate generator for the UART. + +devices/rx_unit.vhdl +UART Rx module. + +devices/tx_unit.vhdl +UART Tx module. + +roms/rom_pkg.vhdl +Package containing the declarations for the memories used by the small and +medium ZPU. + +roms/dmips_bram.vhdl +A memory that maps to Xilinx BRAMs and contains the Dhrystone Benchmark, +Version 2.1 (Language: C). This memory can be connected to the ZPU for +simulation or hardware implementations. The code assumes a 50 MHz clock to +compute the benchmark. The minimum size for this block should be 32 kB. + +roms/hello_bram.vhdl +A memory that maps to Xilinx BRAMs and contains a simple "Hello World!" +program (C compiled). This memory can be connected to the ZPU for +simulation or hardware implementations. The minimum size for this block +should be 16 kB. + +helpers/zpu_med1.vhdl +This is a helper that connects a ZPU to its memory and the PHI I/O space. + +testbenches/dmips_med1_tb.vhdl +A simple testbench to simulate the ZPU (behavior). + +fpga/dmips_med1.vhdl +A wrapper to implement the ZPU in an FPGA. This example was designed for a +GR-XC3S board from Pender, but should be easily adapted to other boards. + + +ZPU library? +------------ + +The following files are part of a library I called ZPU: + +zpu_pkg.vhdl, zpu_medium.vhdl, txt_util.vhdl, timer.vhdl, rx_unit.vhdl, +tx_unit.vhdl, br_gen.vhdl, phi_io.vhdl and trace.vhdl. + +You should group them inside a library called zpu. This procedure is tool-chain +dependent. In the ISE tool you must add a library and them move these files to +the library. + +If you don't know how to do it with your tools you can just replace all the: + +library zpu; +use zpu.xxxxxx.all; + +code by: + +library work; +use work.xxxxxx.all; + + +Which files are needed for simulation? +-------------------------------------- + +You need all the files that compose the zpu library plus: +1) A memory containing a program, i.e.: +roms/rom_pkg.vhdl and roms/dmips_bram.vhdl +2) A testbench (including the memory and I/O interconnections): +aux/zpu_med1.vhdl and testbenches/dmips_med1_tb.vhdl + + +Which files are needed for synthesis? +------------------------------------- + +This is similar to simulation, but: +1) You should avoid trace.vhdl. +2) The top level should connect to the FPGA pins, replace dmips_med1_tb.vhdl +by fpga/dmips_med1.vhdl or fpga/hello_med1.vhdl + + +What resources are needed in the FPGA? +-------------------------------------- + +The DMIPS benchmarks needs aprox (Xilinx Spartan 3): + +Flip Flops: 498 +LUTs: 1877 +Slices: 1032 +BRAMs: 16 +Multipliers: 3 + +The hello world example needs less memory: + +Flip Flops: 496 +LUTs: 1872 +Slices: 1027 +BRAMs: 8 +Multipliers: 3 + +The board should contain an RS-232 transceiver. A push button (active when +pressed) is also used, for reset. + + +Ok, I synthetized it and put in the FPGA, what now? +--------------------------------------------------- + +Connect the RS-232 board output to a terminal (a PC). Setup the terminal for +115200 8N1 reception and press the reset push button. You should get the +program output. You can change the baudrate in the toplevel VHDL. + + +Please tell me if you succeed or failed! +Enjoy, Salvador E. Tropea + Index: trunk/zpu/hdl/zealot/zpu_pkg.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/zpu_pkg.vhdl =================================================================== --- trunk/zpu/hdl/zealot/zpu_pkg.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/zpu_pkg.vhdl (revision 77)

trunk/zpu/hdl/zealot/zpu_pkg.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/fpga/hello_med1.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/fpga/hello_med1.vhdl =================================================================== --- trunk/zpu/hdl/zealot/fpga/hello_med1.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/fpga/hello_med1.vhdl (revision 77)

trunk/zpu/hdl/zealot/fpga/hello_med1.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: trunk/zpu/hdl/zealot/fpga/dmips_med1.vhdl =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: trunk/zpu/hdl/zealot/fpga/dmips_med1.vhdl =================================================================== --- trunk/zpu/hdl/zealot/fpga/dmips_med1.vhdl (nonexistent) +++ trunk/zpu/hdl/zealot/fpga/dmips_med1.vhdl (revision 77)

trunk/zpu/hdl/zealot/fpga/dmips_med1.vhdl Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property