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Fixed bug in Indirect Zero Page,X

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This commit is contained in:
Leeland Heins 2018-12-18 11:11:45 -06:00 committed by GitHub
parent cfc0573243
commit 8697b21bf0
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 10 additions and 7 deletions
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as65.pl
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@ -979,6 +979,9 @@ sub is_Zero_Page {
my ($operand, $lineno) = @_;
if ($operand =~ /^\$[0-9a-fA-F][0-9a-fA-F]$/) {
return 2;
} elsif ($operand =~ /^(\d+)$/) {
return 0 if $1 > 255;
return 2;
# Handle symbols
} elsif ($operand =~ /^([A-Za-z\.][A-Za-z0-9_\.]+)$/) {
# Not Zero Page if the symbol is not 8 bits.
@ -1169,7 +1172,7 @@ sub is_Zero_Page_Y {
sub generate_Zero_Page_Y {
my ($addr, $operand, $opcode, $ofh, $lineno) = @_;
# Parse hex
if ($operand =~ /^\$(\[0-9a-fA-F][0-9a-fA-F]),[Yy]$/) {
if ($operand =~ /^\$([0-9a-fA-F][0-9a-fA-F]),[Yy]$/) {
my $opval = hex(lc($1));
generate_16($ofh, $addr, $opcode, $opval);
# Parse decimal
@ -1515,7 +1518,7 @@ sub generate_Absolute_Y {
# STA (Zpg,X) 81
sub is_Indirect_Zero_Page_X {
my ($operand, $lineno) = @_;
if ($operand =~ /^\([0-9a-fA-F][0-9a-fA-F],[Xx]\)$/) {
if ($operand =~ /^\(\$[0-9a-fA-F][0-9a-fA-F],[Xx]\)$/) {
return 2;
} elsif ($operand =~ /^\((\d+),[Xx]\)$/) {
return 0 if $1 > 255;
@ -1556,7 +1559,7 @@ sub is_Indirect_Zero_Page_X {
sub generate_Indirect_Zero_Page_X {
my ($addr, $operand, $opcode, $ofh, $lineno) = @_;
# Parse hex
if ($operand =~ /^\(\$([0-9a-fA-f][0-9a-fA-f])\),[Xx]/) {
if ($operand =~ /^\(\$([0-9a-fA-f][0-9a-fA-f]),[Xx]\)$/) {
my $opval = hex(lc($1));
generate_16($ofh, $addr, $opcode, $opval);
# Parse decimal
@ -1696,17 +1699,17 @@ sub is_Indirect_Zero_Page {
sub generate_Indirect_Zero_Page {
my ($addr, $operand, $opcode, $ofh, $lineno) = @_;
# Parse hex
if ($operand =~ /^\($([0-9a-fA-F][0-9a-fA-F])\)/) {
if ($operand =~ /^\(\$([0-9a-fA-F][0-9a-fA-F])\)$/) {
my $opval = hex(lc($1));
generate_16($ofh, $addr, $opcode, $opval);
# Parse decimal
} elsif ($operand =~ /^\((\d+)\)/) {
generate_16($ofh, $addr, $opcode, $1);
# Return symbol value
} elsif ($operand =~ /^\(([A-Za-z\.][A-Za-z0-9_\.]+)\)/) {
} elsif ($operand =~ /^\(([A-Za-z\.][A-Za-z0-9_\.]+)\)$/) {
handle_8_bit_symbol($ofh, $lineno, $addr, $opcode, $1);
# Allow arithmetic on symbol
} elsif ($operand =~ /^\(([A-Za-z\.][A-Za-z0-9_\.]+)\s*[+]\s*(\d+)\)/) {
} elsif ($operand =~ /^\(([A-Za-z\.][A-Za-z0-9_\.]+)\s*[+]\s*(\d+)\)$/) {
# Add
my $symval = $symbols{$1};
if (defined $symval) {
@ -1715,7 +1718,7 @@ sub generate_Indirect_Zero_Page {
} else {
print "**** $lineno - Unknown symbol '$1'\n";
}
} elsif ($operand =~ /^\(([A-Za-z\.][A-Za-z0-9_\.]+)\s*[-]\s*(\d+)\)/) {
} elsif ($operand =~ /^\(([A-Za-z\.][A-Za-z0-9_\.]+)\s*[-]\s*(\d+)\)$/) {
# Subtract
my $symval = $symbols{$1};
if (defined $symval) {