development/dis6502: Updated for version 0.15+2857fc3_20180311.

Signed-off-by: B. Watson <urchlay@slackware.uk>

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

8 files changed, 600 insertions, 214 deletions

diff --git a/development/dis6502/2857fc3_20180311.diff b/development/dis6502/2857fc3_20180311.diff
new file mode 100644
index 0000000000000..7101c7a22f81d
--- /dev/null
+++ b/development/dis6502/2857fc3_20180311.diff
@@ -0,0 +1,446 @@
+diff --git a/dis.h b/dis.h
+index 607678d..c48a6c2 100644
+--- a/dis.h
++++ b/dis.h
+@@ -1,8 +1,7 @@
+ /*
+  * dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
+  *
+- * $Id: dis.h 26 2004-01-17 23:28:23Z eric $
+- * Copyright 2000-2016 Eric Smith <spacewar@gmail.com>
++ * Copyright 2000-2018 Eric Smith <spacewar@gmail.com>
+  *
+  * This program is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License version 2 as
+@@ -21,7 +20,7 @@
+  */
+ 
+ 
+-extern int sevenbit;  /* if true, mask character data with 0x7f
++extern bool sevenbit;  /* if true, mask character data with 0x7f
+ 			 to ignore MSB */
+ 
+ typedef uint16_t addr_t;
+@@ -41,6 +40,10 @@ extern int base_address, vector_address;
+ extern int entry_count;
+ extern int entry_address[MAX_ENTRY];
+ 
++
++extern bool prodos;
++
++
+ extern int asmout;
+ extern unsigned char f[];
+ extern unsigned char d[];
+@@ -116,8 +119,9 @@ char *get_name(addr_t loc);
+ #define TSTOP 262
+ #define TRTSTAB 263
+ #define TJTAB2 264
+-#define EQS 265
+-#define OFS 266
++#define TJTAB 265
++#define EQS 266
++#define OFS 267
+ 
+ extern FILE *yyin, *yyout;
+ int lineno;
+diff --git a/initopts.c b/initopts.c
+index f33345c..f5bb146 100644
+--- a/initopts.c
++++ b/initopts.c
+@@ -1,10 +1,8 @@
+ /* 
+- * 
+- *  dis [-p predefineds] file
+- *
+- *  The -p option may be repeated.
++ * Copyright 2001-2018 Eric Smith <spacewar@gmail.com>
+  */
+ 
++#include <stdbool.h>
+ #include <stdint.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+@@ -37,7 +35,8 @@ void usage (void)
+                    "            -p <file>      predefs\n"
+ 	           "            -e <address>   alternate entry point address\n"
+ 	           "            -v <address>   alternate vector address\n"
+-	   	   "            -7             mask character data to 7-bit",
++	   	   "            -7             mask character data to 7-bit\n"
++	           "            -P             decode ProDOS MLI calls\n",
+ 	   progname);
+   exit (1);
+ }
+@@ -96,7 +95,10 @@ void initopts (int argc, char *argv[])
+ 		bopt = ATARI_BOOT;
+ 		break;
+ 	      case '7':
+-		sevenbit = 1;
++		sevenbit = true;
++		break;
++	      case 'P':
++		prodos = true;
+ 		break;
+ 	      default: crash("Invalid option letter");
+ 	      }
+diff --git a/lex.l b/lex.l
+index 1899887..3c637c6 100644
+--- a/lex.l
++++ b/lex.l
+@@ -1,8 +1,7 @@
+ /*
+  * dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
+  *
+- * $Id: lex.l 26 2004-01-17 23:28:23Z eric $
+- * Copyright 2001-2014 Eric Smith <eric@brouhaha.com>
++ * Copyright 2001-2018 Eric Smith <spacewar@gmail.com>
+  *
+  * This program is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License version 2 as
+@@ -23,6 +22,7 @@
+ 
+ %{
+ #undef ECHO
++#include <stdbool.h>
+ #include <stdint.h>
+ #include <stdlib.h>
+ #include <string.h>
+@@ -62,6 +62,8 @@ alphanum	[0-9a-zA-Z_]
+ 
+ \.[Jj][Tt][Aa][Bb]2	{ return TJTAB2; }
+ 
++\.[Jj][Tt][Aa][Bb]	{ return TJTAB; }
++
+ {digit}+		{
+ 			  (void)sscanf(yytext, "%d", &token.ival); 
+ 			  return NUMBER;
+diff --git a/main.c b/main.c
+index cdc3c23..a6f101d 100644
+--- a/main.c
++++ b/main.c
+@@ -1,8 +1,7 @@
+ /*
+  * dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
+  *
+- * $Id: main.c 26 2004-01-17 23:28:23Z eric $
+- * Copyright 2000-2016 Eric Smith <eric@brouhaha.com>
++ * Copyright 2000-2018 Eric Smith <spacewar@gmail.com>
+  *
+  * This program is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License version 2 as
+@@ -21,6 +20,7 @@
+  */
+ 
+ 
++#include <stdbool.h>
+ #include <stdint.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+@@ -28,7 +28,8 @@
+ 
+ #include "dis.h"
+ 
+-int sevenbit = 0;  /* if true, mask character data with 0x7f to ignore MSB */
++bool sevenbit = false;  /* if true, mask character data with 0x7f to ignore MSB */
++bool prodos = false;
+ 
+ #define NTSTART 500
+ 
+@@ -44,6 +45,12 @@ int rtstab_addr [RTSTAB_MAX];		/* .rtstab directive */
+ int rtstab_size [RTSTAB_MAX];
+ int rtstab_count = 0;
+ 
++#define JTAB_MAX 50
++
++int jtab_addr [JTAB_MAX];		/* .jtab directive */
++int jtab_size [JTAB_MAX];
++int jtab_count = 0;
++
+ #define JTAB2_MAX 50
+ 
+ int jtab2_addr_low  [JTAB2_MAX];	/* .jtab2 directive */
+@@ -122,6 +129,18 @@ void trace_inst (addr_t addr)
+ 	  break;
+ 	}
+ 
++      // handle ProDOS MLI calls
++      if (prodos && (opcode == 0x20) && (operand == 0xbf00))
++	{
++	  f[addr++] |= TDONE;  // system call number
++	  uint16_t parameter_list = getword(addr);
++	  f[addr++] |= TDONE;
++	  f[addr++] |= TDONE;
++	  f[parameter_list] |= DREF;
++	  save_ref(istart, operand);
++	  continue;
++	}
++
+       /* Mark data references */
+ 
+       switch (ip->flag & ADRMASK)
+@@ -211,8 +230,7 @@ void start_trace (addr_t loc, char *name)
+ 
+ void do_ptrace (void)
+ {
+-  int i;
+-  for (i = 0; i<tstarti; i++)
++  for (int i = 0; i<tstarti; i++)
+     {
+       char *trace_sym = (char *) malloc (6);
+       sprintf (trace_sym, "P%04x", tstart [i]);
+@@ -223,16 +241,29 @@ void do_ptrace (void)
+ 
+ void do_rtstab (void)
+ {
+-  int i, j;
+-  int loc, code;
++  for (int i = 0; i < rtstab_count; i++)
++    {
++      int loc = rtstab_addr [i];
++      for (int j = 0; j < rtstab_size [i]; j++)
++	{
++	  char *trace_sym = (char *) malloc (6);
++	  int code = d [loc] + (d [loc + 1] << 8) + 1;
++	  sprintf (trace_sym, "T%04x", code);
++	  start_trace (code, trace_sym);
++	  loc += 2;
++	}
++    }
++}
+ 
+-  for (i = 0; i < rtstab_count; i++)
++void do_jtab (void)
++{
++  for (int i = 0; i < jtab_count; i++)
+     {
+-      loc = rtstab_addr [i];
+-      for (j = 0; j < rtstab_size [i]; j++)
++      int loc = jtab_addr [i];
++      for (int j = 0; j < jtab_size [i]; j++)
+ 	{
+ 	  char *trace_sym = (char *) malloc (6);
+-	  code = d [loc] + (d [loc + 1] << 8) + 1;
++	  int code = d [loc] + (d [loc + 1] << 8);
+ 	  sprintf (trace_sym, "T%04x", code);
+ 	  start_trace (code, trace_sym);
+ 	  loc += 2;
+@@ -242,16 +273,14 @@ void do_rtstab (void)
+ 
+ void do_jtab2 (void)
+ {
+-  int i, j;
+-  int loc_l, loc_h, code;
+-  for (i = 0; i < jtab2_count; i++)
++  for (int i = 0; i < jtab2_count; i++)
+     {
+-      loc_l = jtab2_addr_low [i];
+-      loc_h = jtab2_addr_high [i];
+-      for (j = 0; j < jtab2_size [i]; j++)
++      int loc_l = jtab2_addr_low [i];
++      int loc_h = jtab2_addr_high [i];
++      for (int j = 0; j < jtab2_size [i]; j++)
+ 	{
+ 	  char *trace_sym = (char *) malloc (6);
+-	  code = d [loc_l + j] + (d [loc_h + j] << 8);
++	  int code = d [loc_l + j] + (d [loc_h + j] << 8);
+ 	  sprintf (trace_sym, "T%04x", code);
+ 	  start_trace (code, trace_sym);
+ 	}
+@@ -295,6 +324,7 @@ int main (int argc, char *argv[])
+ 
+ 	do_ptrace ();
+ 	do_rtstab ();
++	do_jtab ();
+ 	do_jtab2 ();
+ 
+ 	trace_all ();
+@@ -308,7 +338,6 @@ int main (int argc, char *argv[])
+ void get_predef (void)
+ {
+ 	long loc, loc2;
+-	int i;
+ 	int size;
+ 	char *name;
+ 
+@@ -334,6 +363,20 @@ void get_predef (void)
+ 		  rtstab_addr [rtstab_count] = loc;
+ 		  rtstab_size [rtstab_count++] = size;
+ 		  break;
++		case TJTAB:
++		  if (yylex() != NUMBER)
++		    crash(".jtab needs an address operand");
++		  loc = token.ival;
++		  if (loc > 0x10000 || loc < 0)
++		    crash("Number out of range");
++		  if (yylex() != ',')
++		    crash(".jtab needs a comma");
++		  if (yylex() != NUMBER)
++		    crash(".jtab needs a comma");
++		  size = token.ival;
++		  jtab_addr [jtab_count] = loc;
++		  jtab_size [jtab_count++] = size;
++		  break;
+ 		case TJTAB2:
+ 		  if (yylex() != NUMBER)
+ 		    crash(".jtab2 needs a number operand");
+@@ -401,7 +444,7 @@ void get_predef (void)
+ 			    size = token.ival;
+ 			    f[loc] |= NAMED;
+ 			    save_name(loc, name);
+-			    for (i = 1; i < size; i++)
++			    for (int i = 1; i < size; i++)
+ 			      {
+ 				f [loc + i] |= OFFSET;
+ 				offset [loc + i] = -i;
+@@ -449,7 +492,6 @@ void loadboot (void)
+ 
+ 	FILE *fp;
+ 	int base_addr;
+-	register int i;
+ 	int len;
+ 
+ 	fp = fopen(file, "r");
+@@ -469,7 +511,7 @@ void loadboot (void)
+ 	if (fread((char *)&d[base_addr], 1, len, fp) != len) 
+ 		crash("input too short");
+ 
+-	for(i = base_addr; len > 0; len--) 
++	for(int i = base_addr; len > 0; len--) 
+ 		f[i++] |= LOADED;
+ 
+ 	start_trace(base_addr+6, "**BOOT**");
+@@ -481,7 +523,7 @@ void loadfile (void)
+ 	FILE *fp;
+ 	int base_addr;
+ 	int last_addr;
+-	register int i;
++	int i;
+ 	int had_header;
+ 	int tmp;
+ 
+@@ -603,13 +645,12 @@ void binaryloadfile (void)
+ 
+   if (entry_count)
+     {
+-      int i;
+-      char label [8];
+-      for (i = 0; i < entry_count; i++)
++      for (int j = 0; j < entry_count; j++)
+ 	{
+-	  snprintf (label, sizeof (label), "e_%04x", entry_address[i]);
++	  char *label = malloc(7);
++	  sprintf (label, "e_%04x", entry_address[j]);
+ 	  printf("label: %s\n", label);
+-	  start_trace (entry_address[i], label);
++	  start_trace (entry_address[j], label);
+ 	}
+     }
+   else
+diff --git a/print.c b/print.c
+index a049a91..1a3f25c 100644
+--- a/print.c
++++ b/print.c
+@@ -1,8 +1,7 @@
+ /*
+  * dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
+  *
+- * $Id: print.c 26 2004-01-17 23:28:23Z eric $
+- * Copyright 2000-2014 Eric Smith <eric@brouhaha.com>
++ * Copyright 2000-2018 Eric Smith <spacewar@gmail.com>
+  *
+  * This program is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License version 2 as
+@@ -20,7 +19,7 @@
+  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
+  */
+ 
+-
++#include <stdbool.h>
+ #include <stdint.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+@@ -247,7 +246,7 @@ int print_data (addr_t i)
+ 	i++;
+ 
+ 	for (j = 1; j < 8; j++) {
+-		if (f[i] & (JREF | SREF | DREF) || ((f[i] & LOADED) == 0)) 
++		if (f[i] & (JREF | SREF | DREF | ISOP) || ((f[i] & LOADED) == 0)) 
+ 			break;
+ 		else
+ 			printf(",$%02x", getbyte(i));
+diff --git a/ref.c b/ref.c
+index 879ddb1..5a40156 100644
+--- a/ref.c
++++ b/ref.c
+@@ -1,8 +1,7 @@
+ /*
+  * dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
+  *
+- * $Id: ref.c,v 1.5 2003/09/15 21:49:25 eric Exp $
+- * Copyright 2001-2003 Eric Smith <eric@brouhaha.com>
++ * Copyright 2001-2018 Eric Smith <spacewar@gmail.com>
+  *
+  * This program is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License version 2 as
+@@ -21,6 +20,7 @@
+  */
+ 
+ 
++#include <stdbool.h>
+ #include <stdint.h>
+ #include <stdio.h>
+ 
+diff --git a/tbl.c b/tbl.c
+index 8a5f3b4..c42f56e 100644
+--- a/tbl.c
++++ b/tbl.c
+@@ -1,8 +1,7 @@
+ /*
+  * dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
+  *
+- * $Id: tbl.c 26 2004-01-17 23:28:23Z eric $
+- * Copyright 2001-2014 Eric Smith <eric@brouhaha.com>
++ * Copyright 2001-2018 Eric Smith <spacewar@gmail.com>
+  *
+  * This program is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License version 2 as
+@@ -20,7 +19,7 @@
+  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
+  */
+ 
+-
++#include <stdbool.h>
+ #include <stdint.h>
+ #include <stdio.h>
+ 
+@@ -83,6 +82,7 @@ struct info optbl[256] = {
+ 	[0x41] = { "eor", 2, INX },
+ 
+ 	[0x45] = { "eor", 2, ZPG },
++	[0x46] = { "lsr", 2, ZPG },
+ 
+         [0x48] = { "pha", 1, IMP },
+ 	[0x49] = { "eor", 2, IMM },
+diff --git a/trace_queue.c b/trace_queue.c
+index 332473c..dc8852f 100644
+--- a/trace_queue.c
++++ b/trace_queue.c
+@@ -1,8 +1,7 @@
+ /*
+  * dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
+  *
+- * $Id: trace_queue.c,v 1.2 2003/09/15 21:49:25 eric Exp $
+- * Copyright 2000-2003 Eric Smith <eric@brouhaha.com>
++ * Copyright 2000-2018 Eric Smith <spacewar@gmail.com>
+  *
+  * This program is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License version 2 as
+@@ -20,7 +19,7 @@
+  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
+  */
+ 
+-
++#include <stdbool.h>
+ #include <stdint.h>
+ #include <stdio.h>
+ #include "dis.h"
diff --git a/development/dis6502/README b/development/dis6502/README
index 5e3fd019706b3..f125d60a09857 100644
--- a/development/dis6502/README
+++ b/development/dis6502/README
@@ -6,6 +6,9 @@ sections from data by tracing the flow of execution, and supports a
 config file for manually defining code sections that aren't reached by
 the trace.
 
+Note: the package includes predef files for Atari and Commodore 8-bit
+computers, for use with the -p option, in /usr/share/dis6502.
+
 Note: This is NOT the dis6502 from AtariMax. Although the name is the
 same, AtariMax's disassembler is completely different (for one thing,
 it's a Windows GUI application).
diff --git a/development/dis6502/compilefix.diff b/development/dis6502/compilefix.diff
deleted file mode 100644
index 00a76e9d6534f..0000000000000
--- a/development/dis6502/compilefix.diff
+++ /dev/null
@@ -1,12 +0,0 @@
-diff -Naur dis6502-0.12/lex.l dis6502-0.12.patched/lex.l
---- dis6502-0.12/lex.l	2004-01-17 18:25:28.000000000 -0500
-+++ dis6502-0.12.patched/lex.l	2017-09-08 00:44:16.631761979 -0400
-@@ -91,7 +91,7 @@
- emalloc(n)
- unsigned n;
- {
--	char *ptr, *malloc();
-+	char *ptr;
- 
- 	if ((ptr = malloc(n)) == (char *) 0) {
- 		(void) fprintf(stderr,"out of core");
diff --git a/development/dis6502/dis6502.1 b/development/dis6502/dis6502.1
deleted file mode 100644
index 458f8fd3835e0..0000000000000
--- a/development/dis6502/dis6502.1
+++ /dev/null
@@ -1,176 +0,0 @@
-.\" Man page generated from reStructuredText.
-.
-.TH DIS6502 1 "2017-09-08" "0.12" "SlackBuilds.org"
-.SH NAME
-dis6502 \- Disassemble 6502 object code
-.
-.nr rst2man-indent-level 0
-.
-.de1 rstReportMargin
-\\$1 \\n[an-margin]
-level \\n[rst2man-indent-level]
-level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
--
-\\n[rst2man-indent0]
-\\n[rst2man-indent1]
-\\n[rst2man-indent2]
-..
-.de1 INDENT
-.\" .rstReportMargin pre:
-. RS \\$1
-. nr rst2man-indent\\n[rst2man-indent-level] \\n[an-margin]
-. nr rst2man-indent-level +1
-.\" .rstReportMargin post:
-..
-.de UNINDENT
-. RE
-.\" indent \\n[an-margin]
-.\" old: \\n[rst2man-indent\\n[rst2man-indent-level]]
-.nr rst2man-indent-level -1
-.\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
-.in \\n[rst2man-indent\\n[rst2man-indent-level]]u
-..
-.\" RST source for dis6502(1) man page. Convert with:
-.
-.\" rst2man.py dis6502.rst > dis6502.1
-.
-.\" rst2man.py comes from the SBo development/docutils package.
-.
-.SH SYNOPSIS
-.sp
-dis6502 [\fI\-b\fP | \fI\-l\fP | \fI\-c\fP | \fI\-r <address>\fP] [\fI\-a\fP] [\fI\-p <pfile>\fP] [\fI\-v <address>\fP] [\fI\-7\fP] \fIfile\fP
-.SH DESCRIPTION
-.sp
-Dis6502 disassembles 6502 binary files. Binary formats understood include
-Atari binary files (L menu command) and boot files. Equate and control
-files can be included via the option to name well known locations and to
-control the disassembly process. The output includes a cross reference.
-.sp
-The disassembly process is a two pass operation: First the program flow
-is traced starting with the init and run parameters in the file headers.
-The dump routine then prints out the information.
-.SH OPTIONS
-.INDENT 0.0
-.TP
-.B \fB\-r\fP \fI<address\fP>
-\fIfile\fP is raw binary, located at \fI<address>\fP\&.
-.TP
-.B \fB\-b\fP
-\fIfile\fP is an Atari boot image (disk or cassette). Note that neither .ATR
-nor .CAS images are supported: the file must be a raw image with no header
-information. For disks, this is called an XFD file.
-.TP
-.B \fB\-l\fP
-\fIfile\fP is an Atari load file (aka XEX).
-.TP
-.B \fB\-c\fP
-\fIfile\fP is a Commodore 64 executable.
-.TP
-.B \fB\-a\fP
-Generate assembly output. Suppresses the addresses and object
-code normally printed on each line of output, and omits the
-cross\-reference section from the end of the output.
-.TP
-.B \fB\-p\fP \fI<pfile>\fP
-Use predefinition file. See \fBFILE FORMAT\fP for the predef file format.
-Up to 10 \fB\-p\fP options may be included.
-.TP
-.B \fB\-v\fP \fI<address>\fP
-Alternate vector address (normally \fB$FFFA\fP). This option only has
-any effect with raw binaries (\fB\-r\fP option).
-.TP
-.B \fB\-7\fP
-Mask character data to 7\-bit.
-.UNINDENT
-.SH FILES
-.sp
-\fB/usr/share/dis6502/atari8.predef\fP
-.sp
-\fB/usr/share/dis6502/c64.predef\fP
-.sp
-Predefinition files for Atari 8\-bit and Commodore 64, containing the usual
-system equates.
-.SH FILE FORMAT
-.sp
-Lines in a predefinition file consist of:
-.sp
-\fBlabel\fP .eq \fIaddress\fP
-.sp
-\fBlabel\fP .equ \fIaddress\fP
-.INDENT 0.0
-.INDENT 3.5
-Defines a label. The \fB\&.eq\fP and \fB\&.equ\fP forms are equivalent.
-.UNINDENT
-.UNINDENT
-.sp
-\fB\&.jtab2\fP \fIlowaddr,hiaddr,count\fP
-.INDENT 0.0
-.INDENT 3.5
-Defines a table of \fIcount\fP pointers, split into low and
-high byte tables. In assembly code, such a table might look like:
-.INDENT 0.0
-.INDENT 3.5
-.sp
-.nf
-.ft C
-; func1, func2, func3 are addresses.
-table_lo: .byte <func1, <func2, <func3
-table_hi: .byte >func1, >func2, >func3
-.ft P
-.fi
-.UNINDENT
-.UNINDENT
-.sp
-To disassemble these, assuming the address of \fItable_lo\fP is \fB$1000\fP,
-use:
-.INDENT 0.0
-.INDENT 3.5
-.sp
-.nf
-.ft C
-\&.jtab2 $1000,$1003,3
-.ft P
-.fi
-.UNINDENT
-.UNINDENT
-.UNINDENT
-.UNINDENT
-.sp
-\fB\&.rtstab\fP \fIlowaddr\fP,*hiaddr*,*count*
-.INDENT 0.0
-.INDENT 3.5
-Like \fB\&.jtab2\fP, but each entry contains the target address minus one, for use with RTS.
-.UNINDENT
-.UNINDENT
-.sp
-\fB\&.trace\fP \fIaddress\fP
-.INDENT 0.0
-.INDENT 3.5
-Causes the trace process to continue at \fIaddress\fP\&.
-.UNINDENT
-.UNINDENT
-.sp
-\fB\&.stop\fP \fIaddress\fP
-.INDENT 0.0
-.INDENT 3.5
-Causes the trace process to stop at \fIaddress\fP\&.
-.UNINDENT
-.UNINDENT
-.SH COPYRIGHT
-.sp
-dis6502 is distributed under the terms of the Free Software Foundation\(aqs
-General Public License, Version 2. See the file
-/usr/doc/dis6502\-0.12/COPYING for license information.
-.SH AUTHORS
-.sp
-dis6502 was written by Robert Bond, Udi Finkelstein, and Eric Smith.
-.sp
-This man page written for the SlackBuilds.org project
-by B. Watson, and is licensed under the WTFPL.
-.SH SEE ALSO
-.sp
-dis(1), da65(1)
-.sp
-The dis6502 homepage: \fI\%http://www.brouhaha.com/~eric/software/dis6502/\fP
-.\" Generated by docutils manpage writer.
-.
diff --git a/development/dis6502/dis6502.SlackBuild b/development/dis6502/dis6502.SlackBuild
index efe451bb9d0e7..12f7c066223fb 100644
--- a/development/dis6502/dis6502.SlackBuild
+++ b/development/dis6502/dis6502.SlackBuild
@@ -6,10 +6,20 @@
 
 # Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.
 
+# 20230516 bkw: *finally* updated after almost 6 years. upstream moved
+# to github but didn't update or remove the old website...
+# - updated for latest git (0.15+2857fc3_20180311). used latest git
+#   rather than the last release because there's a critical bugfix:
+#   release was missing the LSR zeropage opcode.
+# - use upstream's man page, now that there is one. though I had to
+#   patch it to add a couple options that aren't mentioned there.
+# - get rid of no-longer-needed compilefix and helpformat patches.
+# - mention the predefs files in README.
+
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=dis6502
-VERSION=${VERSION:-0.12}
+VERSION=${VERSION:-0.15+2857fc3_20180311}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
@@ -47,25 +57,31 @@ fi
 
 set -e
 
+TARVER="$( echo $VERSION | cut -d+ -f1 )"
+GITVER="$( echo $VERSION | cut -d+ -f2 )"
+
 rm -rf $PKG
 mkdir -p $TMP $PKG $OUTPUT
 cd $TMP
-rm -rf $PRGNAM-$VERSION
-tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
-cd $PRGNAM-$VERSION
+rm -rf $PRGNAM-$TARVER
+tar xvf $CWD/$PRGNAM-$TARVER.tar.gz
+cd $PRGNAM-$TARVER
 chown -R root:root .
 chmod 644 *
 
-patch -p1 < $CWD/compilefix.diff
-patch -p1 < $CWD/helpformat.diff # add missing \n to last line of usage msg
+# Patch was made by editing the man page. Documents a few options
+# that are in the help output, cleans up the formatting, and fixes
+# the synopsis.
+patch -p1 < $CWD/manpage.diff
+
+# Patch was made by cloning upstream's repo and doing a 'git diff v0.15'.
+patch -p1 < $CWD/$GITVER.diff
+
 make CFLAGS="$SLKCFLAGS -fcommon"
 
 mkdir -p $PKG/usr/bin $PKG/usr/man/man1
 install -s -m0755 $PRGNAM $PKG/usr/bin
-
-# man page based on the one from comp.sources.amiga v02i053 release, dated
-# October 1986,
-gzip -9c < $CWD/$PRGNAM.1 > $PKG/usr/man/man1/$PRGNAM.1.gz
+gzip -9c < $PRGNAM.1 > $PKG/usr/man/man1/$PRGNAM.1.gz
 
 # c64.predefs file is a modified version of the one from the
 # comp.sources.amiga v02i053 release. atari8.predefs file was created
diff --git a/development/dis6502/dis6502.info b/development/dis6502/dis6502.info
index 553ce9fb1ceee..65a483acbda5b 100644
--- a/development/dis6502/dis6502.info
+++ b/development/dis6502/dis6502.info
@@ -1,8 +1,8 @@
 PRGNAM="dis6502"
-VERSION="0.12"
-HOMEPAGE="http://www.brouhaha.com/~eric/software/dis6502/"
-DOWNLOAD="http://www.brouhaha.com/~eric/software/dis6502/dis6502-0.12.tar.gz"
-MD5SUM="6b865314f1d7d8629fd3c7f7e390b099"
+VERSION="0.15+2857fc3_20180311"
+HOMEPAGE="https://github.com/brouhaha/dis6502/"
+DOWNLOAD="https://github.com/brouhaha/dis6502/archive/v0.15/dis6502-0.15.tar.gz"
+MD5SUM="0db176cea87d7e01ca1112a62a23b9d9"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
 REQUIRES=""
diff --git a/development/dis6502/helpformat.diff b/development/dis6502/helpformat.diff
deleted file mode 100644
index bda1ffcecdf68..0000000000000
--- a/development/dis6502/helpformat.diff
+++ /dev/null
@@ -1,12 +0,0 @@
-diff -Naur dis6502-0.12.orig/initopts.c dis6502-0.12/initopts.c
---- dis6502-0.12.orig/initopts.c	2004-01-17 18:25:29.000000000 -0500
-+++ dis6502-0.12/initopts.c	2006-11-24 18:56:32.000000000 -0500
-@@ -30,7 +30,7 @@
-                    "  options:  -a             assembly output\n"
-                    "            -p <file>      predefs\n"
- 	           "            -v <address>   alternate vector address\n"
--	   	   "            -7             mask character data to 7-bit",
-+	   	   "            -7             mask character data to 7-bit\n",
- 	   progname);
-   exit (1);
- }
diff --git a/development/dis6502/manpage.diff b/development/dis6502/manpage.diff
new file mode 100644
index 0000000000000..0004c82a5baa0
--- /dev/null
+++ b/development/dis6502/manpage.diff
@@ -0,0 +1,121 @@
+diff --git a/dis6502.1 b/dis6502.1
+index 5234264..a0d9ea3 100644
+--- a/dis6502.1
++++ b/dis6502.1
+@@ -1,14 +1,34 @@
+-.TH DIS6502 1 "12 SEP 2003"
+-.UC 4
++.TH DIS6502 1 "16 MAY 2023" "0.15+2857fc3_20180311" "SlackBuilds.org"
+ .SH NAME
+ dis6502 \- Disassemble 6502 object code
+ .SH SYNOPSIS
+ .I dis6502
+ [
+-.I \-b 
++.B \-r \fIaddress\fP
++|
++.B \-b
++|
++.B \-l
++|
++.B \-c
+ ]
+ [
+-.I -p \fIpfile\fP 
++.B \-a
++]
++[
++.B \-p \fIpfile\fP
++]
++[
++.B \-e \fIaddress\fP
++]
++[
++.B \-v \fIaddress\fP
++]
++[
++.B \-7
++]
++[
++.B \-P
+ ]
+ .I file
+ .LP
+@@ -24,41 +44,49 @@ process.  The output includes a cross reference.
+ The disassembly process is a two pass operation:  First the program
+ flow is traced starting with the init and run parameters in the file
+ headers.  The dump routine then prints out the information.
+-.PP
+-The command line options are:
++.SH OPTIONS
+ .TP
+-.I \-r \fIaddress\fP
++.B \-r \fIaddress\fP
+ Raw binary input file, with the first byte of the file being associated with
+ the specified address.
+ .TP
+-.I \-b
++.B \-b
+ Atari boot format input file.
+ .TP
+-.I \-l
++.B \-l
+ Atari load format input file.
+ .TP
+-.I \-c
++.B \-c
+ Commodore format input file.
+ .TP
+-.I \-p \fIpfile\fP 
++.B \-a
++Assembly output.
++.TP
++.B \-p \fIpfile\fP
+ Read in the predefine file \fIpfile\fP.
+ Up to 20 \fI-p\fP options may be included.
+ .TP
+-.I \-v \fIaddress\fP
++.B \-e \fIaddress\fP
++Use an alternate entry point address.
++.TP
++.B \-v \fIaddress\fP
+ Use an alternate address for the reset and interrupt vectors.
+ .TP
+-.I \-7
++.B \-7
+ Mask off MSB of character data.
+-.PP
+-Lines in pfile consist of:
++.TP
++.B \-P
++Decode Apple ProDOS MLI calls.
++.SH PREDEFINE FILES
++Lines in \fIpfile\fP consist of:
+ .PP
+ name .eq address
+ .PP
+  .stop address
+ .PP
+  .trace address
+-.PP 
+-.I Address 
++.PP
++.I Address
+ may be a decimal number or
+ may be a hexadecimal number (the first character of the number
+ should be "$").  For example, "$21b5" is
+@@ -66,12 +94,11 @@ the hexadecimal number 21b5.
+ .I Name
+ is a sequence of numbers and characters starting with a
+ letter.
+-.I .trace 
++.I .trace
+ causes
+-the trace process to continue at the address given.  
++the trace process to continue at the address given.
+ .I .stop
+ causes the
+ trace process to stop at the address given.
+ .SH AUTHORS
+ Robert Bond, Udi Finkelstein, and Eric Smith
+-.SH BUGS