ZSM v3.4 from my RetroProjects repository.

.gitignore

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+# ---------------------------
+# MESCC & TOOL CHAIN BINARIES
+# ---------------------------
+cpm.exe
+cpm2.exe
+cpm_player.exe
+cc.com
+cc.COM
+CC.COM
+ccopt.com
+ccopt.COM
+CCOPT.COM
+#zsm.com
+#ZSM.COM
+#hextocom.com
+#hextocom.COM
+#HEXTOCOM.COM
+#link.com
+#LINK.COM
+#prntosym.com
+#prntosym.COM
+#PRNTOSYM.COM
+#zmac.exe
+
+# ---------------
+# MESCC LIBRARIES
+# ---------------
+alloc.h
+atexit.h
+bsearch.h
+clock.h
+conio.h
+cpm.h
+ctype.h
+fileio.h
+fprintf.h
+mem.h
+mescc.h
+printf.h
+qsort.h
+rand.h
+redir.h
+setjmp.h
+sprintf.h
+stdbool.h
+string.h
+xprintf.h
+z80.h
+
+# ------------------
+# INTERMEDIATE FILES
+# ------------------
+*.HEX
+*.ZSM
+*.PRN
+
+# -----------------------
+# PROJECT FILES & FOLDERS
+# -----------------------
+backup/

bintoasm.c

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+/*	BinToAsm.c
+
+	Converts a binary file into an assembler file for Z80.
+
+	Copyright (C) 2004-2015 Miguel I. Garcia Lopez, FloppySoftware
+
+	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, 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, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+	To compile with MESCC:
+
+	cc bintoasm
+	ccopt bintoasm.zsm
+	zsm bintoasm
+	hextocom bintoasm
+
+	Revisions:
+
+	22 Feb 2004 : v1.00
+	03 Apr 2007 : v1.01 / Minor changes.
+	10 Apr 2007 : Output 8 bytes in a line instead of 16.
+	15 May 2007 : v1.02 / Added title & usage help.
+	04 Sep 2015 : v1.03 / Amended some messages and comments.
+*/
+
+#include <mescc.h>
+#include <conio.h>
+#include <string.h>
+#include <ctype.h>
+#include <fileio.h>
+#include <printf.h>
+#include <fprintf.h>
+
+#define VERSION "1.03 / 04 Sep 2015\n\n(c) 2004-2015 FloppySoftware"
+
+FILE *fpi, *fpo;
+
+int data, chpos;
+unsigned counter;
+
+main(argc, argv)
+int argc, argv[];
+{
+	printf("BinToAsm v%s\n\n", VERSION);
+
+	if(argc!=3)
+	{
+		printf("Usage: bintoasm binfile asmfile\n");
+		exit(1);
+	}
+
+	if((fpi=fopen(argv[1],"rb"))==NULL)
+		error("Opening input file");
+
+	if((fpo=fopen(argv[2],"w"))==NULL)
+		error("Opening output file");
+
+	counter=chpos=0;
+
+	while((data=fgetc(fpi))!=EOF)
+	{
+		if(!chpos)
+			fprintf(fpo, " DEFB");
+
+		fprintf(fpo, " %03d", data);
+
+		if(++chpos!=8)
+			fprintf(fpo, ",");
+		else
+		{
+			fprintf(fpo, "\n");
+			chpos=0;
+		}
+
+		++counter;
+	}
+
+	printf("%d bytes\n", counter);
+
+	if(fclose(fpi))
+		error("Closing input file");
+
+	if(fclose(fpo))
+		error("Closing output file");
+}
+
+error(txt)
+char *txt;
+{
+	printf("ERROR: %s\n", txt);
+	exit(1);
+}

dump.c

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+/*	dump.c
+
+	Print contents of a file in byte and ascii format.
+
+	(c) 2000-2015 Miguel I. Garcia Lopez, FloppySoftware.
+
+	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 02111-1307, USA.
+
+	Usage:
+
+	dump filename
+
+	To compile with MESCC:
+
+	cc dump
+	ccopt dump.zsm
+	zsm dump
+	hextocom dump
+
+	Revisions:
+
+	?? ??  2000 : v1.00
+	10 Nov 2013 : v1.20
+	04 Sep 2015 : v1.21 : Amended some messages and comments.
+*/
+
+/* LIBRARIES
+*/
+
+#define CC_FREAD
+
+#include <mescc.h>
+#include <conio.h>
+#include <fileio.h>
+
+/* DEFs
+*/
+
+#define VERSION "Dump v1.21 / 04 Sep 2015\n\n(c) 2000-2015 FloppySoftware"
+
+/* PROGRAM
+*/
+
+main(argc,argv)
+int argc;
+int argv[];
+{
+	int	i,		/* Counter */
+		offset;		/* Offset in file */
+
+	FILE	*fp;		/* Channel for file */
+
+	char	buffer[16];	/* Buffer for input file */
+
+	/* Check right number of parameters */
+
+	if(argc != 2)
+	{
+		puts(VERSION);
+		puts("\nUsage: dump fname");
+		return 1;
+	}
+
+	/* Open file in binary mode */
+
+	if((fp = fopen((argv[1]),"rb")) == NULL)
+		error("Can't open file");
+
+	/* Initialize variables */
+
+	offset=0;
+
+	/* Start */
+
+	while(fread(buffer, 16, 1, fp) == 1)
+	{
+		/* Print offset */
+
+		puthex4(offset); putchar(' '); putchar(':'); putchar(' ');
+
+		/* Print data in hexadecimal format */
+
+		for(i = 0; i < 16; ++i)
+		{
+			puthex2(buffer[i]); putchar(' ');
+		}
+
+		/* Separator */
+
+		putchar(':'); putchar(' ');
+
+		/* Print data in ascii format */
+
+		for(i = 0; i < 16; ++i)
+		{
+			if(buffer[i] > 31 && buffer[i] < 128)
+				putchar(buffer[i]);
+			else
+				putchar('.');
+		}
+
+		/* End of line */
+
+		putchar('\n');
+
+		/* Update offset */
+
+		offset += 16;
+	}
+
+	fclose(fp);
+
+	return 0;
+}
+
+error(txt)
+char *txt;
+{
+	puts(txt);
+
+	exit(1);
+}
+
+puthex4(word)
+int word;
+{
+	puthex2(word >> 8);
+	puthex2(word);
+}
+
+puthex2(byte)
+char byte;
+{
+	puthex1(byte >> 4);
+	puthex1(byte);
+}
+
+puthex1(nibble)
+char nibble;
+{
+	nibble &= 0x0F;
+
+	putchar(nibble < 10 ? '0' + nibble : 'A' + nibble - 10);
+}
+