diff --git a/graphics/dhgr_viewer/Makefile b/graphics/dhgr_viewer/Makefile
new file mode 100644
index 00000000..dacc899a
--- /dev/null
+++ b/graphics/dhgr_viewer/Makefile
@@ -0,0 +1,31 @@
+include ../../Makefile.inc
+
+DOS33 = ../../utils/dos33fs-utils/dos33
+B2D = ../../utils/bmp2dhr/b2d
+PNG_TO_40x96 = ../../utils/gr-utils/png_to_40x96
+PNG_TO_RLE = ../../utils/gr-utils/png2rle
+EMPTY_DISK = ../../empty_disk/empty.dsk
+TOKENIZE = ../../utils/asoft_basic-utils/tokenize_asoft
+
+all:	make_dhgr_viewer
+
+
+###
+
+make_dhgr_viewer:	make_dhgr_viewer.o
+	$(CC) $(LFLAGS) -o make_dhgr_viewer make_dhgr_viewer.o
+
+make_dhgr_viewer.o:	make_dhgr_viewer.c
+	$(CC) $(CFLAGS) -c make_dhgr_viewer.c
+
+###
+
+HELLO:	hello.bas
+	$(TOKENIZE) < hello.bas > HELLO
+
+###
+
+
+clean:
+		rm -f *~ *.o *.lst HELLO make_dhgr_viewer
+
diff --git a/graphics/dhgr_viewer/make_dhgr_viewer.c b/graphics/dhgr_viewer/make_dhgr_viewer.c
new file mode 100644
index 00000000..674cda9b
--- /dev/null
+++ b/graphics/dhgr_viewer/make_dhgr_viewer.c
@@ -0,0 +1,288 @@
+/* TODO: bail if will over-write files */
+
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define MAX_FILES	1024
+
+static char *png_filenames[MAX_FILES];
+static char *zx02_aux_filenames[MAX_FILES];
+static char *zx02_bin_filenames[MAX_FILES];
+static char *labels[MAX_FILES];
+
+/* Format:
+
+file_label FILE.ZX02 file.png
+
+*/
+
+int main(int argc, char **argv) {
+
+	char *result;
+	char string[BUFSIZ];
+	int num_files=0;
+	int i,j,count,line=0;
+	char temp_png[BUFSIZ];
+	char temp_zx02[BUFSIZ];
+	char temp_label[BUFSIZ];
+	char s_filename[BUFSIZ];
+	char filename_base[BUFSIZ];
+	char temp[BUFSIZ];
+
+	FILE *sss;
+
+	/******************************************/
+	/* parse command line                     */
+	/******************************************/
+
+	if (argc>1) {
+		strcpy(filename_base,argv[1]);
+	}
+	else {
+		strcpy(filename_base,"dhires_plain");
+	}
+	sprintf(s_filename,"%s.s",filename_base);
+
+	/******************************************/
+	/* scan in data                           */
+	/******************************************/
+
+	while(1) {
+		line++;
+		result=fgets(string,BUFSIZ,stdin);
+		if (result==NULL) {
+			break;
+		}
+		if (result[0]=='#') continue;
+
+		count=sscanf(string,"%s %s %s",temp_label,temp_zx02,temp_png);
+		if (count!=3) {
+			fprintf(stderr,"WARNING! weird input line %d (%d)\n",line,count);
+			fprintf(stderr,"\t%s",string);
+		}
+		else {
+			labels[num_files]=strdup(temp_label);
+			png_filenames[num_files]=strdup(temp_png);
+
+			sprintf(temp,"%s.AUX.ZX02",temp_zx02);
+			zx02_aux_filenames[num_files]=strdup(temp);
+
+			sprintf(temp,"%s.BIN.ZX02",temp_zx02);
+			zx02_bin_filenames[num_files]=strdup(temp);
+
+			num_files++;
+			if (num_files>=MAX_FILES) {
+				fprintf(stderr,"ERROR!  Too many files!\n");
+				exit(-1);
+			}
+		}
+	}
+
+	if (num_files==0) {
+		fprintf(stderr,"ERROR!  No files found!\n");
+		exit(-1);
+	}
+
+	/******************************************/
+	/* generate S file                        */
+	/******************************************/
+
+	sss=fopen(s_filename,"w");
+	if (sss==NULL) {
+		fprintf(stderr,"ERRROR opening %s\n",s_filename);
+		exit(-1);
+	}
+
+
+	fprintf(sss,"; Some nice hires images\n\n");
+	fprintf(sss,".include \"../dhires_main.s\"\n\n");
+	fprintf(sss,"MAX_FILES = %d\n\n",num_files);
+
+	fprintf(sss,"bin_filenames_low:\n");
+	for(i=0;i<num_files;i++) {
+		fprintf(sss,"\t.byte <%s_filename_bin\n",labels[i]);
+	}
+	fprintf(sss,"\n");
+
+	fprintf(sss,"bin_filenames_high:\n");
+	for(i=0;i<num_files;i++) {
+		fprintf(sss,"\t.byte >%s_filename_bin\n",labels[i]);
+	}
+	fprintf(sss,"\n");
+
+	fprintf(sss,"aux_filenames_low:\n");
+	for(i=0;i<num_files;i++) {
+		fprintf(sss,"\t.byte <%s_filename_aux\n",labels[i]);
+	}
+	fprintf(sss,"\n");
+
+	fprintf(sss,"aux_filenames_high:\n");
+	for(i=0;i<num_files;i++) {
+		fprintf(sss,"\t.byte >%s_filename_aux\n",labels[i]);
+	}
+	fprintf(sss,"\n");
+
+
+	fprintf(sss,"; filename to open is 30-character Apple text:\n");
+
+	for(i=0;i<num_files;i++) {
+		fprintf(sss,"%s_filename_bin:\t; %s\n",labels[i],zx02_bin_filenames[i]);
+		fprintf(sss,"\t.byte ");
+		for(j=0;j<strlen(zx02_bin_filenames[i]);j++) {
+			if (j!=0) fprintf(sss,",");
+			fprintf(sss,"\'%c\'|$80",zx02_bin_filenames[i][j]);
+		}
+		fprintf(sss,",$00\n\n");
+
+		fprintf(sss,"%s_filename_aux:\t; %s\n",labels[i],zx02_aux_filenames[i]);
+		fprintf(sss,"\t.byte ");
+		for(j=0;j<strlen(zx02_aux_filenames[i]);j++) {
+			if (j!=0) fprintf(sss,",");
+			fprintf(sss,"\'%c\'|$80",zx02_aux_filenames[i][j]);
+		}
+		fprintf(sss,",$00\n\n");
+
+
+	}
+	fclose(sss);
+
+
+	/******************************************/
+	/* generate Makefile                      */
+	/******************************************/
+
+	/* don't over-write as a precaution */
+	if (access("Makefile", F_OK) == 0) {
+		fprintf(stderr,"Makefile already exists!  Out of caution giving up.\n");
+		exit(-1);
+	}
+
+	sss=fopen("Makefile","w");
+	if (sss==NULL) {
+		fprintf(stderr,"ERRROR opening Makefile\n");
+		exit(-1);
+	}
+
+	fprintf(sss,"include ../../../Makefile.inc\n\n");
+	fprintf(sss,"ZX02 = ~/research/6502_compression/zx02.git/build/zx02\n");
+	fprintf(sss,"PNG_TO_HGR = ../../../utils/hgr-utils/png2hgr\n");
+	fprintf(sss,"LINKER_SCRIPTS = ../../../linker_scripts\n");
+	fprintf(sss,"DOS33 = ../../../utils/dos33fs-utils/dos33\n");
+	fprintf(sss,"EMPTY_DISK = ../../../empty_disk/empty.dsk\n");
+	fprintf(sss,"TOKENIZE = ../../../utils/asoft_basic-utils/tokenize_asoft\n");
+
+	fprintf(sss,"\n");
+
+	fprintf(sss,"all:\t%s.dsk\n\n",filename_base);
+
+	fprintf(sss,"####\n\n");
+
+	fprintf(sss,"DHIRES:\t%s.o\n",filename_base);
+	fprintf(sss,"\tld65 -o DHIRES %s.o -C $(LINKER_SCRIPTS)/apple2_c00.inc\n\n",filename_base);
+
+	fprintf(sss,"%s.o:\t%s.s ../dhires_main.s ../zx02_optim.s \\\n",filename_base,filename_base);
+	fprintf(sss,"\t\t../zp.inc ../hardware.inc\n");
+	fprintf(sss,"\tca65 -o %s.o %s.s -l %s.lst\n",filename_base,filename_base,filename_base);
+
+	fprintf(sss,"####\n\n");
+
+	fprintf(sss,"HELLO:\t../hello.bas\n");
+	fprintf(sss,"\t$(TOKENIZE) < ../hello.bas > HELLO\n\n");
+
+	fprintf(sss,"####\n\n");
+
+	fprintf(sss,"%s.dsk:\tHELLO DHIRES\\\n",filename_base);
+	for(i=0;i<num_files;i++) {
+		fprintf(sss,"\t\t%s.aux.zx02 %s.bin.zx02",
+			png_filenames[i],png_filenames[i]);
+		if (i!=(num_files-1)) {
+			fprintf(sss,"\\");
+		}
+		fprintf(sss,"\n");
+	}
+	fprintf(sss,"\tcp $(EMPTY_DISK) %s.dsk\n",filename_base);
+	fprintf(sss,"\t$(DOS33) -y %s.dsk SAVE A HELLO\n",filename_base);
+	fprintf(sss,"\t$(DOS33) -y %s.dsk BSAVE -a 0x0c00 DHIRES\n",filename_base);
+	for(i=0;i<num_files;i++) {
+		fprintf(sss,"\t$(DOS33) -y %s.dsk BSAVE -a 0xa000 %s.aux.zx02 %s\n",
+			filename_base,
+			png_filenames[i],zx02_aux_filenames[i]);
+		fprintf(sss,"\t$(DOS33) -y %s.dsk BSAVE -a 0xa000 %s.bin.zx02 %s\n",
+			filename_base,
+			png_filenames[i],zx02_bin_filenames[i]);
+	}
+
+	fclose(sss);
+
+
+	/******************************************/
+	/* generate Makefile.graphics             */
+	/******************************************/
+
+	sss=fopen("Makefile.graphics","w");
+	if (sss==NULL) {
+		fprintf(stderr,"ERRROR opening Makefile\n");
+		exit(-1);
+	}
+
+	fprintf(sss,"include ../../../Makefile.inc\n\n");
+	fprintf(sss,"ZX02 = ~/research/6502_compression/zx02.git/build/zx02\n");
+	fprintf(sss,"PNG_TO_HGR = ../../../utils/hgr-utils/png2hgr\n");
+	fprintf(sss,"PNG_TO_DHGR = ../../../utils/hgr-utils/png2dhgr\n");
+	fprintf(sss,"LINKER_SCRIPTS = ../../../linker_scripts\n");
+	fprintf(sss,"DOS33 = ../../../utils/dos33fs-utils/dos33\n");
+	fprintf(sss,"EMPTY_DISK = ../../../empty_disk/empty.dsk\n");
+	fprintf(sss,"TOKENIZE = ../../../utils/asoft_basic-utils/tokenize_asoft\n");
+
+	fprintf(sss,"\n");
+
+	fprintf(sss,"all:\\\n");
+	for(i=0;i<num_files;i++) {
+		fprintf(sss,"\t\t%s.aux.zx02 %s.bin.zx02",
+			png_filenames[i],png_filenames[i]);
+		if (i!=(num_files-1)) {
+			fprintf(sss,"\\");
+		}
+		fprintf(sss,"\n");
+	}
+
+//	fprintf(sss,"\tcp $(EMPTY_DISK) %s.dsk\n",filename_base);
+//	fprintf(sss,"\t$(DOS33) -y %s.dsk SAVE A HELLO\n",filename_base);
+//	fprintf(sss,"\t$(DOS33) -y %s.dsk BSAVE -a 0x0c00 HIRES\n",filename_base);
+//	for(i=0;i<num_files;i++) {
+//		fprintf(sss,"\t$(DOS33) -y %s.dsk BSAVE -a 0xa000 %s.hgr.zx02 %s\n",
+//			filename_base,
+//			png_filenames[i],zx02_filenames[i]);
+//	}
+
+
+	for(i=0;i<num_files;i++) {
+
+		fprintf(sss,"\n####\n\n");
+		fprintf(sss,"%s.aux.zx02:\t%s.AUX\n",png_filenames[i],png_filenames[i]);
+		fprintf(sss,"\t$(ZX02) %s.AUX %s.aux.zx02\n",png_filenames[i],png_filenames[i]);
+		fprintf(sss,"\n");
+		fprintf(sss,"%s.AUX:\t%s.png\n",png_filenames[i],png_filenames[i]);
+		fprintf(sss,"\t$(PNG_TO_DHGR) %s.png %s\n",png_filenames[i],png_filenames[i]);
+		fprintf(sss,"\n");
+
+		fprintf(sss,"%s.bin.zx02:\t%s.BIN\n",png_filenames[i],png_filenames[i]);
+		fprintf(sss,"\t$(ZX02) %s.BIN %s.bin.zx02\n",png_filenames[i],png_filenames[i]);
+		fprintf(sss,"\n");
+		fprintf(sss,"%s.BINr:\t%s.png\n",png_filenames[i],png_filenames[i]);
+		fprintf(sss,"\t$(PNG_TO_DHGR) %s.png %s\n",png_filenames[i],png_filenames[i]);
+		fprintf(sss,"\n");
+
+	}
+
+	fprintf(sss,"####\n\n");
+	fprintf(sss,"clean:\n");
+	fprintf(sss,"\trm -f *~ *.o *.lst\n\n");
+
+	fclose(sss);
+
+	return 0;
+}
diff --git a/graphics/dhgr_viewer/plain/c64.png b/graphics/dhgr_viewer/plain/c64.png
new file mode 100644
index 00000000..cd8fa957
Binary files /dev/null and b/graphics/dhgr_viewer/plain/c64.png differ
diff --git a/graphics/dhgr_viewer/plain/plain.data b/graphics/dhgr_viewer/plain/plain.data
new file mode 100644
index 00000000..22dee736
--- /dev/null
+++ b/graphics/dhgr_viewer/plain/plain.data
@@ -0,0 +1,4 @@
+# label         dos3.3 name     prefix for png file
+c64		C64		c64		'
+stardew_dhgr	STARDEW		stardew_dhgr	'
+sworg		SWORG		sworg		'
diff --git a/graphics/dhgr_viewer/plain/stardew_dhgr.png b/graphics/dhgr_viewer/plain/stardew_dhgr.png
new file mode 100644
index 00000000..0002e9b4
Binary files /dev/null and b/graphics/dhgr_viewer/plain/stardew_dhgr.png differ
diff --git a/graphics/dhgr_viewer/plain/sworg.png b/graphics/dhgr_viewer/plain/sworg.png
new file mode 100644
index 00000000..a547c2ca
Binary files /dev/null and b/graphics/dhgr_viewer/plain/sworg.png differ
diff --git a/utils/hgr-utils/png2dhgr.c b/utils/hgr-utils/png2dhgr.c
index e15fe155..1f8f8e36 100644
--- a/utils/hgr-utils/png2dhgr.c
+++ b/utils/hgr-utils/png2dhgr.c
@@ -71,6 +71,7 @@ int loadpng(char *filename,
 	unsigned char *image,*out_ptr;
 	int width, height;
 	int a2_color;
+	int skip=1;
 
 	png_byte bit_depth;
 	png_structp png_ptr;
@@ -121,11 +122,15 @@ int loadpng(char *filename,
 	color_type = png_get_color_type(png_ptr, info_ptr);
 	bit_depth = png_get_bit_depth(png_ptr, info_ptr);
 
-	if (width!=140) {
+	if ((width!=140) && (width!=280)) {
 		fprintf(stderr,"Unknown width %d\n",width);
 		return -1;
 	}
 
+	if (width==280) {
+		skip=2;
+	}
+
 	if (height!=192) {
 		fprintf(stderr,"Unknown height %d\n",height);
 		return -1;
@@ -183,7 +188,7 @@ int loadpng(char *filename,
 
 
 	for(y=0;y<height;y++) {
-		for(x=0;x<width;x++) {
+		for(x=0;x<width;x+=skip) {
 
 			color=	(row_pointers[y][x*bytes_per_pixel]<<16)+
 				(row_pointers[y][x*bytes_per_pixel+1]<<8)+