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Added help and fixed a bug in Absolute mode

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This commit is contained in:
Leeland Heins 2018-12-14 23:42:46 -06:00 committed by GitHub
parent a313598671
commit 9e96b093ac
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 17 additions and 2 deletions
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19
da65.pl
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@ -980,7 +980,19 @@ my %opcodes = (
}
);
die "Usage: da65.pl [input]\n" unless defined $ARGV[0];
sub usage {
print "Usage:\n";
print "$0 [-i] [-x \$addr] [-a addr] <input file>\n";
print " -i : input mode (for feeding to an assembler\n";
print " -x : base address in hex\n";
print " -a : base address in decimal\n";
print " -h : this help message\n";
}
if (!defined $ARGV[0]) {
usage();
exit;
}
my $input_mode = 0;
@ -999,6 +1011,9 @@ while (defined $ARGV[0] && $ARGV[0] =~ /^-/) {
} elsif ($ARGV[0] eq '-i') {
$input_mode = 1;
shift;
} elsif ($ARGV[0] eq '-h') {
usage();
exit;
} else {
die "Invalid argument $ARGV[0]\n";
}
@ -1055,7 +1070,7 @@ sub mode_Absolute {
if ($input_mode) {
print uc sprintf("%04x: %3.3s \$%02x%02x\n", $addr + $base, $instr, $bytes[$addr + 2], $bytes[$addr + 1]);
} else {
print uc sprintf("%08x %02x %02x %02x %3.3s \$%02x%02x\n", $addr + $base, $bytes[$addr], $bytes[$addr + 1], $bytes[$addr + 2], $instr, $bytes[$addr + 2], $bytes[$addr + 1]);
print uc sprintf("%08x %02x %02x %02x %3.3s \$%02x%02x\n", $addr + $base, $bytes[$addr], $bytes[$addr + 2], $bytes[$addr + 1], $instr, $bytes[$addr + 1], $bytes[$addr + 2]);
}
$_[0] += 3;
}