Commit 25145003 authored by Ben Hutchings's avatar Ben Hutchings
Browse files

dsp56k: Add makefile for building from source

Some small amount of postprocessing is required after assembling
bootstrap.asm with a56.  Add a script and makefile for this.
Signed-off-by: default avatarBen Hutchings <>
parent 4969d2da
......@@ -372,10 +372,12 @@ Driver: dsp56k - Atari DSP56k support
File: dsp56k/bootstrap.bin
Source: dsp56k/bootstrap.asm
Source: dsp56k/Makefile
Source: dsp56k/
Licence: GPLv2 or later
DSP56001 assembler, possibly buildable with a56 from
DSP56001 assembler, buildable with a56 from
bootstrap.bin: bootstrap.asm
a56 bootstrap.asm >/dev/null
perl <a56.out >bootstrap.bin
rm -f a56.out bootstrap.bin
# Postprocessor for dsp56k bootstrap code.
# Copyright Ben Hutchings 2011.
# 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.
use strict;
use warnings;
my @memory;
my %symbol;
# Reconstruct memory image and symbol table
while (<>) {
if (/^P ([0-9A-F]{4}) ([0-9A-F]{6})\n/) {
$memory[hex($1)] = hex($2);
} elsif (/^I ([0-9A-F]{6}) (\w+)\n/) {
$symbol{$2} = hex($1);
} else {
print STDERR "W: did not recognise line $.\n";
# Concatenate first and second stage. Second stage is assembled
# between 'upload' and 'upload_end', but initially loaded at
# 'real' (end of the first stage).
for (0 .. ($symbol{real} - 1), $symbol{upload} .. ($symbol{upload_end} - 1)) {
my $word = $memory[$_] || 0;
print pack('CCC', $word / 65536, ($word / 256) % 256, $word % 256);
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