diff --git a/c2vip.c b/c2vip.c
new file mode 100644
index 0000000..d4ff717
--- /dev/null
+++ b/c2vip.c
@@ -0,0 +1,648 @@
+/*
+
+c2vip, Code to VIP Tape|Text, Version 0.2, Wed Jun 25 06:02:49 GMT 2014
+
+Parts copyright (c) 2014 All Rights Reserved, Egan Ford (egan@sense.net)
+
+THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY 
+KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
+PARTICULAR PURPOSE.
+
+Built on work by:
+	* Paul Bourke (http://paulbourke.net/dataformats/audio/, AIFF and WAVE output code)
+	* Malcolm Slaney and Ken Turkowski (Integer to IEEE 80-bit float code)
+
+License:
+	*  Do what you like, remember to credit all sources when using.
+
+Description:
+	This small utility will read COSMAC VIP binaries and output COSMAC VIP AIFF
+	and WAV audio files for use with a cassette interface.
+
+Features:
+	*  Big and little-endian machine support.
+		o  Little-endian tested.
+	*  AIFF and WAVE output (both tested).
+	*  Platforms tested:
+		o  32-bit/64-bit x86 OS/X.
+		o  32-bit/64-bit x86 Linux.
+		o  32-bit x86 Windows/Cygwin.
+		o  32-bit x86 Windows/MinGW.
+
+Compile:
+	OS/X:
+		gcc -Wall -O -o c2vip c2vip.c
+	Linux:
+		gcc -Wall -O -o c2vip c2vip.c -lm
+	Windows/Cygwin:
+		gcc -Wall -O -o c2vip c2vip.c
+	Windows/MinGW:
+		PATH=C:\MinGW\bin;%PATH%
+		gcc -Wall -O -static -o c2vip c2vip.c
+
+Notes:
+	*  Dropbox only supports .wav and .aiff (do not use .wave or .aif)
+
+Not yet done:
+	*  Test big-endian.
+	*  gnuindent
+    *  Redo malloc code in appendtone
+
+Thinking about:
+	*  Check for existing file and abort, or warn, or prompt.
+	*  -q quiet option for Makefiles
+
+Bugs:
+	*  Probably
+
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <string.h>
+#include <math.h>
+#include "c2vip.h"
+
+#define ABS(x) (((x) < 0) ? -(x) : (x))
+
+#define VERSION "Version 0.2"
+#define OUTFILE argv[argc-1]
+#define BINARY 0
+#define MONITOR 1
+#define AIFF 2
+#define WAVE 3
+#define DSK 4 
+
+#define WRITERBYTE(x) { \
+	unsigned char wb_j, wb_temp=(x); \
+	for(wb_j=0;wb_j<8;wb_j++) { \
+		if(wb_temp & 1) \
+			appendtone(&output,&outputlength,freq1,rate,0,1,&offset); \
+		else \
+			appendtone(&output,&outputlength,freq0,rate,0,1,&offset); \
+		wb_temp>>=1; \
+	} \
+}
+
+void usage();
+char *getext(char *filename);
+void appendtone(double **sound, long *length, int freq, int rate, double time, double cycles, int *offset);
+void Write_AIFF(FILE * fptr, double *samples, long nsamples, int nfreq, int bits, double amp);
+void Write_WAVE(FILE * fptr, double *samples, long nsamples, int nfreq, int bits, double amp);
+void ConvertToIeeeExtended(double num, unsigned char *bytes);
+
+int square = 0;
+
+typedef struct seg {
+	int start;
+	int length;
+	int codelength;
+	unsigned char *data;
+	char filename[256];
+} segment;
+
+int main(int argc, char **argv)
+{
+	FILE *ofp;
+	double *output = NULL, amp=0.75;
+	long outputlength=0;
+	int i, j, c, outputtype, offset=0, fileoutput=1;
+	int longmon=0, rate=48000, bits=8, freq0=2000, freq1=800;
+	char *filetypes[] = {"binary","monitor","aiff","wave","disk"};
+	char *ext;
+	unsigned char pop, parity;
+	unsigned int numseg = 0;
+	segment *segments = NULL;
+
+	opterr = 1;
+	while((c = getopt(argc, argv, "vph?r:")) != -1)
+		switch(c) {
+			case 'v':		// version
+				fprintf(stderr,"\n%s\n\n",VERSION);
+				return 1;
+				break;
+			case 'p':		// stdout
+				fileoutput = 0;
+				break;
+			case 'h':		// help
+			case '?':
+				usage();
+				return 1;
+			case 'r':		// override rate for -1/-2 only
+				rate = atoi(optarg);
+				break;
+		}
+
+	if(argc - optind < 1 + fileoutput) {
+		usage();
+		return 1;
+	}
+
+	// read intput files
+
+	fprintf(stderr,"\n");
+	for(i=optind;i<argc-fileoutput;i++) {
+		unsigned char b, *data;
+		int j, k, inputtype=BINARY;
+		segment *tmp;
+		FILE *ifp;
+
+		if((tmp = realloc(segments, (numseg+1) * sizeof(segment))) == NULL) {
+			fprintf(stderr,"could not allocate segment %d\n",numseg+1);
+			abort();
+		}
+		segments = tmp;
+
+		k=0;
+		for(j=0;j<strlen(argv[i]);j++) {
+			if(argv[i][j] == ',')
+				break;
+			segments[numseg].filename[k++]=argv[i][j];
+		}
+		segments[numseg].filename[k] = '\0';
+		// TODO: store as basename, check for MINGW compat
+
+/*
+		if((ext = getext(segments[numseg].filename)) != NULL)
+			if(strcmp(ext,"mon") == 0)
+				inputtype = MONITOR;
+*/
+
+		if ((ifp = fopen(segments[numseg].filename, "rb")) == NULL) {
+			fprintf(stderr,"Cannot read: %s\n\n",segments[numseg].filename);
+			return 1;
+		}
+
+		fprintf(stderr,"Reading %s, type %s, segment %d, start: ",segments[numseg].filename,filetypes[inputtype],numseg+1);
+
+		if((data = malloc(64*1024*sizeof(char))) == NULL) {
+			fprintf(stderr,"could not allocate 64K data\n");
+			abort();
+		}
+
+		if(inputtype == BINARY) {
+			segments[numseg].start = 0;
+			segments[numseg].length = 0;
+			while(fread(&b, 1, 1, ifp) == 1)
+				data[segments[numseg].length++]=b;
+
+			segments[numseg].data = data;
+			fprintf(stderr,"0x%04X, length: %d\n",segments[numseg].start,segments[numseg].length);
+		}
+
+		fclose(ifp);
+		numseg++;
+	}
+	fprintf(stderr,"\n");
+
+	if(fileoutput) {
+		if((ext = getext(OUTFILE)) == NULL) {
+			usage();
+			return 1;
+		}
+		else {
+			if(strcmp(ext,"aiff") == 0 || strcmp(ext,"aif") == 0)
+				outputtype = AIFF;
+			else if(strcmp(ext,"wave") == 0 || strcmp(ext,"wav") == 0)
+				outputtype = WAVE;
+			else if(strcmp(ext,"mon") == 0)
+				outputtype = MONITOR;
+			else {
+				usage();
+				return 1;
+			}
+		}
+	}
+	else {
+		outputtype = MONITOR;
+	}
+
+	ofp=stdout;
+	if(fileoutput) {
+		if ((ofp = fopen(OUTFILE, "w")) == NULL) {
+			fprintf(stderr,"\nCannot write: %s\n\n",OUTFILE);
+			return 1;
+		}
+		fprintf(stderr,"Writing %s as %s formatted %s.\n\n",OUTFILE,"COSMAC VIP",filetypes[outputtype]);
+	}
+	else
+		fprintf(stderr,"Writing %s as %s formatted %s.\n\n","STDOUT","COSMAC VIP",filetypes[outputtype]);
+
+	if(outputtype == MONITOR) {
+		int i, j, saddr;
+
+		for(i=0;i<numseg;i++) {
+			saddr = segments[i].start;
+			fprintf(ofp,"%04X:", saddr);
+			for(j=0;j<segments[i].length;j++) {
+				fprintf(ofp," %02X", segments[i].data[j]);
+				if(++saddr % (8+(24*longmon)) == 0 && j < segments[i].length - 1)
+					fprintf(ofp,"\n%04X:",saddr);
+			}
+			fprintf(ofp,"\n");
+		}
+
+		fclose(ofp);
+		return 0;
+	}
+
+	for(i=0;i<numseg;i++) {
+		appendtone(&output,&outputlength,2000,rate,4.0,0,&offset);
+
+		for(j=0;j<segments[i].length;j++) {
+			// start bit
+			appendtone(&output,&outputlength,freq1,rate,0,1,&offset);
+			// data bits
+			WRITERBYTE(segments[i].data[j]);
+			// even parity
+			pop = segments[i].data[j];
+			parity = 0;
+			for(;pop;parity=(parity==0))
+				pop &= pop - 1;
+			if(parity)
+				appendtone(&output,&outputlength,freq1,rate,0,1,&offset);
+			else
+				appendtone(&output,&outputlength,freq0,rate,0,1,&offset);
+		}
+	}
+
+	// append zero to zero out last wave
+	appendtone(&output,&outputlength,0,rate,0,1,&offset);
+
+	// 0.1 sec quiet to help some emulators
+	appendtone(&output,&outputlength,0,rate,0.1,0,&offset);
+
+	// 0.4 sec quiet to help some IIs
+	// appendtone(&output,&outputlength,0,rate,0.4,0,&offset);
+
+	// write it
+	if(outputtype == AIFF)
+		Write_AIFF(ofp,output,outputlength,rate,bits,amp);
+	else if(outputtype == WAVE)
+		Write_WAVE(ofp,output,outputlength,rate,bits,amp);
+
+	fclose(ofp);
+	return 0;
+}
+
+void appendtone(double **sound, long *length, int freq, int rate, double time, double cycles, int *offset)
+{
+	long i, n=time*rate;
+	static long grow = 0;
+	double *tmp = NULL;
+
+	if(freq && cycles)
+		n=cycles*rate/freq;
+
+	if(n == 0)
+		n=cycles;
+
+/*
+	if((tmp = (double *)realloc(*sound, (*length + n) * sizeof(double))) == NULL)
+		abort();
+	*sound = tmp;
+*/
+
+// new code for speed up Windows realloc
+	if(*length + n > grow) {
+		grow = *length + n + 10000000;
+		if((tmp = (double *)realloc(*sound, (grow) * sizeof(double))) == NULL)
+			abort();
+		*sound = tmp;
+	}
+
+//tmp -> (*sound)
+	if(square) {
+		int j;
+
+		if(freq)
+			for (i = 0; i < n; i++) {
+				for(j = 0;j < rate / freq / 2;j++)
+					(*sound)[*length + i++] = 1;
+				for(j = 0;j < rate / freq / 2;j++)
+					(*sound)[*length + i++] = -1;
+				i--;
+			}
+		else
+			for (i = 0; i < n; i++)
+				(*sound)[*length + i] = 0;
+	}
+	else
+		for(i=0;i<n;i++)
+			(*sound)[*length+i] = sin(2*M_PI*i*freq/rate + *offset*M_PI);
+
+	if(cycles - (int)cycles == 0.5)
+		*offset = (*offset == 0);
+
+	*length += n;
+}
+
+char *getext(char *filename)
+{
+	char stack[256], *rval;
+	int i, sp = 0;
+
+	for(i=strlen(filename)-1;i>=0;i--) {
+		if(filename[i] == '.')
+			break;
+		stack[sp++] = filename[i];
+	}
+	stack[sp] = '\0';
+
+	if(sp == strlen(filename) || sp == 0)
+		return(NULL);
+
+	if((rval = (char *)malloc(sp * sizeof(char))) == NULL)
+		; //do error code
+
+	rval[sp] = '\0';
+	for(i=0;i<sp+i;i++)
+		rval[i] = stack[--sp];
+
+	return(rval);
+}
+
+void usage()
+{
+	fprintf(stderr,"%s",usagetext);
+}
+
+// Code below from http://paulbourke.net/dataformats/audio/
+/*
+   Write an AIFF sound file
+   Only do one channel, only support 16 bit.
+   Supports sample frequencies of 11, 22, 44KHz (default).
+   Little/big endian independent!
+*/
+
+// egan: changed code to support any Hz and 8 bit.
+
+void Write_AIFF(FILE * fptr, double *samples, long nsamples, int nfreq, int bits, double amp)
+{
+	unsigned short v;
+	int i;
+	unsigned long totalsize;
+	double themin, themax, scale, themid;
+	unsigned char bit80[10];
+
+	// Write the form chunk
+	fprintf(fptr, "FORM");
+	totalsize = 4 + 8 + 18 + 8 + (bits / 8) * nsamples + 8;
+	fputc((totalsize & 0xff000000) >> 24, fptr);
+	fputc((totalsize & 0x00ff0000) >> 16, fptr);
+	fputc((totalsize & 0x0000ff00) >> 8, fptr);
+	fputc((totalsize & 0x000000ff), fptr);
+	fprintf(fptr, "AIFF");
+
+	// Write the common chunk
+	fprintf(fptr, "COMM");
+	fputc(0, fptr);				// Size
+	fputc(0, fptr);
+	fputc(0, fptr);
+	fputc(18, fptr);
+	fputc(0, fptr);				// Channels = 1
+	fputc(1, fptr);
+	fputc((nsamples & 0xff000000) >> 24, fptr);	// Samples
+	fputc((nsamples & 0x00ff0000) >> 16, fptr);
+	fputc((nsamples & 0x0000ff00) >> 8, fptr);
+	fputc((nsamples & 0x000000ff), fptr);
+	fputc(0, fptr);				// Size = 16
+	fputc(bits, fptr);
+
+	ConvertToIeeeExtended(nfreq, bit80);
+	for (i = 0; i < 10; i++)
+		fputc(bit80[i], fptr);
+
+	// Write the sound data chunk
+	fprintf(fptr, "SSND");
+	fputc((((bits / 8) * nsamples + 8) & 0xff000000) >> 24, fptr);	// Size
+	fputc((((bits / 8) * nsamples + 8) & 0x00ff0000) >> 16, fptr);
+	fputc((((bits / 8) * nsamples + 8) & 0x0000ff00) >> 8, fptr);
+	fputc((((bits / 8) * nsamples + 8) & 0x000000ff), fptr);
+	fputc(0, fptr);				// Offset
+	fputc(0, fptr);
+	fputc(0, fptr);
+	fputc(0, fptr);
+	fputc(0, fptr);				// Block
+	fputc(0, fptr);
+	fputc(0, fptr);
+	fputc(0, fptr);
+
+	// Find the range
+	themin = samples[0];
+	themax = themin;
+	for (i = 1; i < nsamples; i++) {
+		if (samples[i] > themax)
+			themax = samples[i];
+		if (samples[i] < themin)
+			themin = samples[i];
+	}
+	if (themin >= themax) {
+		themin -= 1;
+		themax += 1;
+	}
+	themid = (themin + themax) / 2;
+	themin -= themid;
+	themax -= themid;
+	if (ABS(themin) > ABS(themax))
+		themax = ABS(themin);
+//  scale = amp * 32760 / (themax);
+	scale = amp * ((bits == 16) ? 32760 : 124) / (themax);
+
+	// Write the data
+	for (i = 0; i < nsamples; i++) {
+		if (bits == 16) {
+			v = (unsigned short) (scale * (samples[i] - themid));
+			fputc((v & 0xff00) >> 8, fptr);
+			fputc((v & 0x00ff), fptr);
+		} else {
+			v = (unsigned char) (scale * (samples[i] - themid));
+			fputc(v, fptr);
+		}
+	}
+}
+
+/*
+   Write an WAVE sound file
+   Only do one channel, only support 16 bit.
+   Supports any (reasonable) sample frequency
+   Little/big endian independent!
+*/
+
+// egan: changed code to support 8 bit.
+
+void Write_WAVE(FILE * fptr, double *samples, long nsamples, int nfreq, int bits, double amp)
+{
+	unsigned short v;
+	int i;
+	unsigned long totalsize, bytespersec;
+	double themin, themax, scale, themid;
+
+	// Write the form chunk
+	fprintf(fptr, "RIFF");
+	totalsize = (bits / 8) * nsamples + 36;
+	fputc((totalsize & 0x000000ff), fptr);	// File size
+	fputc((totalsize & 0x0000ff00) >> 8, fptr);
+	fputc((totalsize & 0x00ff0000) >> 16, fptr);
+	fputc((totalsize & 0xff000000) >> 24, fptr);
+	fprintf(fptr, "WAVE");
+	fprintf(fptr, "fmt ");		// fmt_ chunk
+	fputc(16, fptr);			// Chunk size
+	fputc(0, fptr);
+	fputc(0, fptr);
+	fputc(0, fptr);
+	fputc(1, fptr);				// Format tag - uncompressed
+	fputc(0, fptr);
+	fputc(1, fptr);				// Channels
+	fputc(0, fptr);
+	fputc((nfreq & 0x000000ff), fptr);	// Sample frequency (Hz)
+	fputc((nfreq & 0x0000ff00) >> 8, fptr);
+	fputc((nfreq & 0x00ff0000) >> 16, fptr);
+	fputc((nfreq & 0xff000000) >> 24, fptr);
+	bytespersec = (bits / 8) * nfreq;
+	fputc((bytespersec & 0x000000ff), fptr);	// Average bytes per second
+	fputc((bytespersec & 0x0000ff00) >> 8, fptr);
+	fputc((bytespersec & 0x00ff0000) >> 16, fptr);
+	fputc((bytespersec & 0xff000000) >> 24, fptr);
+	fputc((bits / 8), fptr);		// Block alignment
+	fputc(0, fptr);
+	fputc(bits, fptr);			// Bits per sample
+	fputc(0, fptr);
+	fprintf(fptr, "data");
+	totalsize = (bits / 8) * nsamples;
+	fputc((totalsize & 0x000000ff), fptr);	// Data size
+	fputc((totalsize & 0x0000ff00) >> 8, fptr);
+	fputc((totalsize & 0x00ff0000) >> 16, fptr);
+	fputc((totalsize & 0xff000000) >> 24, fptr);
+
+	// Find the range
+	themin = samples[0];
+	themax = themin;
+	for (i = 1; i < nsamples; i++) {
+		if (samples[i] > themax)
+			themax = samples[i];
+		if (samples[i] < themin)
+			themin = samples[i];
+	}
+	if (themin >= themax) {
+		themin -= 1;
+		themax += 1;
+	}
+	themid = (themin + themax) / 2;
+	themin -= themid;
+	themax -= themid;
+	if (ABS(themin) > ABS(themax))
+		themax = ABS(themin);
+//  scale = amp * 32760 / (themax);
+	scale = amp * ((bits == 16) ? 32760 : 124) / (themax);
+
+	// Write the data
+	for (i = 0; i < nsamples; i++) {
+		if (bits == 16) {
+			v = (unsigned short) (scale * (samples[i] - themid));
+			fputc((v & 0x00ff), fptr);
+			fputc((v & 0xff00) >> 8, fptr);
+		} else {
+			v = (unsigned char) (scale * (samples[i] - themid));
+			fputc(v + 0x80, fptr);
+		}
+	}
+}
+
+
+/*
+ * C O N V E R T   T O   I E E E   E X T E N D E D
+ */
+
+/* Copyright (C) 1988-1991 Apple Computer, Inc.
+ * All rights reserved.
+ *
+ * Machine-independent I/O routines for IEEE floating-point numbers.
+ *
+ * NaN's and infinities are converted to HUGE_VAL or HUGE, which
+ * happens to be infinity on IEEE machines.  Unfortunately, it is
+ * impossible to preserve NaN's in a machine-independent way.
+ * Infinities are, however, preserved on IEEE machines.
+ *
+ * These routines have been tested on the following machines:
+ *    Apple Macintosh, MPW 3.1 C compiler
+ *    Apple Macintosh, THINK C compiler
+ *    Silicon Graphics IRIS, MIPS compiler
+ *    Cray X/MP and Y/MP
+ *    Digital Equipment VAX
+ *
+ *
+ * Implemented by Malcolm Slaney and Ken Turkowski.
+ *
+ * Malcolm Slaney contributions during 1988-1990 include big- and little-
+ * endian file I/O, conversion to and from Motorola's extended 80-bit
+ * floating-point format, and conversions to and from IEEE single-
+ * precision floating-point format.
+ *
+ * In 1991, Ken Turkowski implemented the conversions to and from
+ * IEEE double-precision format, added more precision to the extended
+ * conversions, and accommodated conversions involving +/- infinity,
+ * NaN's, and denormalized numbers.
+ */
+
+#ifndef HUGE_VAL
+#define HUGE_VAL HUGE
+#endif							/*HUGE_VAL */
+
+#define FloatToUnsigned(f) ((unsigned long)(((long)(f - 2147483648.0)) + 2147483647L) + 1)
+
+void ConvertToIeeeExtended(double num, unsigned char *bytes)
+{
+	int sign;
+	int expon;
+	double fMant, fsMant;
+	unsigned long hiMant, loMant;
+
+	if (num < 0) {
+		sign = 0x8000;
+		num *= -1;
+	} else {
+		sign = 0;
+	}
+
+	if (num == 0) {
+		expon = 0;
+		hiMant = 0;
+		loMant = 0;
+	} else {
+		fMant = frexp(num, &expon);
+		if ((expon > 16384) || !(fMant < 1)) {	/* Infinity or NaN */
+			expon = sign | 0x7FFF;
+			hiMant = 0;
+			loMant = 0;			/* infinity */
+		} else {				/* Finite */
+			expon += 16382;
+			if (expon < 0) {	/* denormalized */
+				fMant = ldexp(fMant, expon);
+				expon = 0;
+			}
+			expon |= sign;
+			fMant = ldexp(fMant, 32);
+			fsMant = floor(fMant);
+			hiMant = FloatToUnsigned(fsMant);
+			fMant = ldexp(fMant - fsMant, 32);
+			fsMant = floor(fMant);
+			loMant = FloatToUnsigned(fsMant);
+		}
+	}
+
+	bytes[0] = expon >> 8;
+	bytes[1] = expon;
+	bytes[2] = hiMant >> 24;
+	bytes[3] = hiMant >> 16;
+	bytes[4] = hiMant >> 8;
+	bytes[5] = hiMant;
+	bytes[6] = loMant >> 24;
+	bytes[7] = loMant >> 16;
+	bytes[8] = loMant >> 8;
+	bytes[9] = loMant;
+}
+
diff --git a/c2vip.h b/c2vip.h
new file mode 100644
index 0000000..5a8fca5
--- /dev/null
+++ b/c2vip.h
@@ -0,0 +1,13 @@
+
+const char *usagetext="\n\
+usage:  c2vip [-vh?]\n\
+        c2vip [-p]   inputfile ... [outputfile.mon]\n\
+        c2vip [-r #] inputfile ... [outputfile.[aif[f]|wav[e]]]\n\
+\n\
+        -h|? this help\n\
+        -p pipe to stdout\n\
+        -r #, where # overrides the sample rate (e.g. -r 48000)\n\
+        -v print version number and exit\n\
+\n\
+";
+