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Commit c662be05 authored by bp's avatar bp
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initial checkin 

git-svn-id: https://www.forth-ev.de/repos/b16@2 3b8d8251-53f3-0310-8f3b-fd1cb8370982
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111, USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
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General Public License applies to most of the Free Software
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GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
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NO WARRANTY
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FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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END OF TERMS AND CONDITIONS
Appendix: How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) 19yy <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) 19yy name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.
trunk/Makefile 0 → 100644
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#
SOURCES = b16.lyx b16-eng.lyx Makefile \
b16.nw b16-eng.nw b16.v b16-eval.v b16-eval-test.v \
boot.asm b16.asm usb.asm b16_eval.rbf la.c b16.fs \
COPYING b16.pdf b16-eng.pdf hex2boot \
add-mem b16-usb-test.v usb-test.v usb.v \
b16-eval-usb.v b16-eval-usb-test.v usbphys.v ram1024.v stackram.v \
sieve.asm b16-gcc-slides.lyx gcc/b16.h gcc/b16.md.in
all: b16.v b16.pdf b16-eng.pdf la
gcc/b16.md: gcc/b16.md.in
m4 <$< >$@
%.nw: %.lyx
lyx --execute "buffer-export literate" $<
%.tex: %.nw
noweave -delay -latex $< | sed -e 's/1<<dep/1<{}<dep/g' >$@
latex $@
%.v: %.nw
notangle -Rb16.v $< >$@
%.dvi: %.tex
latex $<
%.ps: %.dvi
dvips -Pams -Pcmz -Ppdf $< -o $@
%.ps.gz: %.ps
gzip <$< >$@
%.pdf: %.ps
ps2pdf $< $@
la: la.c
gcc -O2 la.c -o la
dist: $(SOURCES)
mkdir b16
tar cf - $(SOURCES) | (cd b16; tar xf -)
tar jcf b16.tar.bz2 b16
rm -rf b16
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#!/bin/bash
raml="$(grep 'RAM instance.*bootraml' exemplar.log | tail -1 | cut -f2 -d "'")_ix38"
ramh="$(grep 'RAM instance.*bootramh' exemplar.log | tail -1 | cut -f2 -d "'")_ix38"
awk "/\(instance $ramh/"' { print; print " (property LPM_FILE (string \"bootramh.mif\"))" }
'"/\(instance $raml/"' { print; print " (property LPM_FILE (string \"bootraml.mif\"))" }
!/\(instance ('"$ramh|$raml"')/ { print }' <b16_eval.edf >b16.edf
trunk/b16-eng.lyx 0 → 100644
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trunk/b16-eng.nw 0 → 100644
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trunk/b16-eval-test.v 0 → 100644
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// b16 evalboard test environment
/*
* $Log: b16-eval-test.v,v $
* Revision 1.5 2003/01/06 20:35:21 bernd
* Changes to run with Icarus Verilog
* USB interrupts
* Added interrupts to the b16 core
*
* Revision 1.4 2002/03/31 23:08:39 bernd
* Made downloader work. Improved testbench to allow serial communication
*
* Revision 1.3 2002/03/24 17:46:15 bernd
* Added bit-bang input
*
* Revision 1.2 2002/03/23 21:35:57 bernd
* Made b16 faster
*
* Revision 1.1 2002/02/17 23:18:58 bernd
* Initial version of test environment
*
*/
`include "b16-eval.v"
`include "b16.v"
module eval_test;
parameter l=16;
reg clk, reset;
reg `L din;
wire `L dout, a;
wire `L d;
wire wr_b, rd_b, ble_b, bhe_b;
b16_eval flk10k30e(clk, reset, din, dout, a, d, wr_b, rd_b, ble_b, bhe_b);
integer oldtime;
always @(dout)
begin
$display("%d: dout <= %b", $time-oldtime, dout);
oldtime <= $time;
end
initial
begin
reset <= 1;
clk <= 0;
#1000 reset <= 0;
forever #50 clk <= ~clk;
end
task send_byte;
input [7:0] byte;
begin
#8700 din[0] <= 0;
#8700 din[0] <= byte[0];
#8700 din[0] <= byte[1];
#8700 din[0] <= byte[2];
#8700 din[0] <= byte[3];
#8700 din[0] <= byte[4];
#8700 din[0] <= byte[5];
#8700 din[0] <= byte[6];
#8700 din[0] <= byte[7];
#8700 din[0] <= 1;
#8700 din[0] <= 1;
end
endtask
initial
begin
din <= 16'h0001;
#100000 send_byte(8'h30); // start bit
send_byte(8'h03);
send_byte(8'h02);
send_byte(8'h04);
send_byte(8'h12);
send_byte(8'h34);
send_byte(8'h56);
send_byte(8'h78);
#100000 send_byte(8'h31);
send_byte(8'h03);
send_byte(8'h02);
send_byte(8'h04);
end
endmodule // eval_test
trunk/b16-eval-usb-test.v 0 → 100644
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// test b16+usb eval code
/*
* $Log$
*/
module test;
wire [15:0] a0, a1, d0, d1;
wire DP, DN, send0, send1;
reg clk, nreset;
assign { DP, DN } = (send0 | send1) ? 2'bzz : 2'b10;
b16_eval_usb #(16, "master.hex")
core0(clk, nreset, a0, d0, wr_b0, rd_b0, ble_b0, bhe_b0,
DP, DN, dif0, send0, dp0, dn0);
b16_eval_usb #(16, "slave.hex")
core1(clk, nreset, a1, d1, wr_b1, rd_b1, ble_b1, bhe_b1,
DP, DN, dif1, send1, dp1, dn1);
usbphys usbp0(DP, DN, dif0, send0, dp0, dn0);
usbphys usbp1(DP, DN, dif1, send1, dp1, dn1);
initial
begin
$dumpfile("b16-eval-usb.vcd");
$dumpvars();
nreset <= 0;
clk <= 0;
#10000 nreset <= 1;
repeat(10000)
#10 clk <= ~clk;
$finish;
end
endmodule // test
trunk/b16-eval-usb.v 0 → 100755
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// Interface to elements on the evaluation board
/*
* $Log: b16-eval-usb.v,v $
* Revision 1.2 2004/05/02 21:40:21 bernd
* Changes for USB and Cyclone
*
* Revision 1.1 2004/05/02 19:22:22 bernd
* Initial checkin
*
*/
`define L [l-1:0]
module b16_eval_usb(clk, nreset, a, d, wr_b, rd_b, ble_b, bhe_b,
DP, DN, dif, send, dp, dn);
parameter l=16, bootram="b16.hex";
input clk, nreset;
output `L a;
inout `L d;
output wr_b, rd_b, ble_b, bhe_b;
input DP, DN, dif;
output send, dp, dn;
wire `L mem_addr, addr, dout, dout_boot, dma, data;
wire r, mem_r, intreq, intack, reqr, reqw;
wire [3:0] pid;
wire [7:0] intvec = { 1'b0, pid, 3'b000 };
wire [1:0] w, mem_w;
reg [2:0] sel;
reg [1:0] dout24;
reg ack;
wire nrst = nreset;
wire reset = nreset;
wire cpu_rw = |w | r;
always @(negedge cpu_rw or negedge reqr or negedge reqw)
ack <= reqr | reqw;
assign mem_r = ack ? reqr : r;
assign mem_w = ack ? {(2){reqw}} : w;
assign mem_addr = ack ? dma : addr;
wire usb_sel = sel[2];
wire mem_sel = ~usb_sel;
cpu #(1) b16(clk, nrst, addr, r, w, data, dout, intreq, intack, intvec);
usb #(1) usb1(clk, reset, DP, DN, dif, send, dp, dn,
usb_sel, addr[2:1], r, w, dma, reqr, reqw, ack, data, data,
pid, intreq, intack);
ram1024 #(bootram) ram(mem_addr[10:1], w, ~clk, data, sel[1] & |w, dout_boot);
assign a = { 1'b0, mem_addr[l-1:1] };
assign d = mem_r ? 16'hzzzz : data;
always @(addr)
if(&addr[15:3]) sel <= 3'b100;
else if(addr[15:11] == 5'h00) sel <= 3'b010;
else sel <= 3'b001;
reg wr_b, rd_b, ble_b, bhe_b;
always @(clk or nrst or r or w or sel)
if(sel[0] & nrst) begin
rd_b <= ~r;
{ wr_b, ble_b, bhe_b } <= 3'b111;
if(!clk) begin
wr_b <= ~|w;
{ bhe_b, ble_b } <= ~w & { ~r, ~r };
end
end
else { wr_b, rd_b, ble_b, bhe_b } <= 4'b1111;
assign data = mem_w ? dout :
{ r, sel } == 4'b1010 ? dout_boot :
{ r, sel } == 4'b1010 ? d : 16'hzzzz;
endmodule
trunk/b16-eval.v 0 → 100644
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// Interface to elements on the evaluation board
`define L [l-1:0]
module b16_eval(clk, reset, din, dout, a, d, wr_b, rd_b, ble_b, bhe_b);
parameter l=16;
input clk, reset;
input `L din;
output `L dout, a;
inout `L d;
output wr_b, rd_b, ble_b, bhe_b;
wire `L addr, dwrite, a_out;
wire r, waits;
wire [1:0] w;
reg `L dout_out, data, a_old;
reg [2:0] sel;
reg [1:0] dout24;
wire [7:0] intvec = 0;
wire intreq = 0;
wire nrst = ~reset;
cpu b16(clk, nrst, addr, r, w, data, dwrite, intreq, intack, intvec);
assign d = r ? {(l){ 1'bz }} : dwrite;
assign a_out = { 1'b0, addr[l-1:1] };
always @(posedge clk)
a_old <= a_out;
assign a[0] = (a_out[0] & a_old[0]) ? 1'bz : a_out[0];
assign a[1] = (a_out[1] & a_old[1]) ? 1'bz : a_out[1];
assign a[2] = (a_out[2] & a_old[2]) ? 1'bz : a_out[2];
assign a[3] = (a_out[3] & a_old[3]) ? 1'bz : a_out[3];
assign a[4] = (a_out[4] & a_old[4]) ? 1'bz : a_out[4];
assign a[5] = (a_out[5] & a_old[5]) ? 1'bz : a_out[5];
assign a[6] = (a_out[6] & a_old[6]) ? 1'bz : a_out[6];
assign a[7] = (a_out[7] & a_old[7]) ? 1'bz : a_out[7];