diff --git a/include/apple2.hires.h b/include/apple2.hires.h
index 0042bb8..5a28188 100644
--- a/include/apple2.hires.h
+++ b/include/apple2.hires.h
@@ -5,5 +5,6 @@
 #include "vm_bits.h"
 
 extern void apple2_hires_draw(apple2 *, int);
+extern void apple2_hires_dump(apple2 *, FILE *);
 
 #endif
diff --git a/include/vm_debug.h b/include/vm_debug.h
index 21cf246..fba4d2f 100644
--- a/include/vm_debug.h
+++ b/include/vm_debug.h
@@ -82,6 +82,7 @@ extern DEBUG_CMD(dblock);
 extern DEBUG_CMD(disasm);
 extern DEBUG_CMD(hdump);
 extern DEBUG_CMD(help);
+extern DEBUG_CMD(hidump);
 extern DEBUG_CMD(jump);
 extern DEBUG_CMD(printaddr);
 extern DEBUG_CMD(printstate);
diff --git a/src/apple2.hires.c b/src/apple2.hires.c
index 476655b..4d51d4f 100644
--- a/src/apple2.hires.c
+++ b/src/apple2.hires.c
@@ -705,3 +705,47 @@ apple2_hires_draw(apple2 *mach, int row)
         prev = curr;
     }
 }
+
+void
+apple2_hires_dump(apple2 *mach, FILE *stream)
+{
+    int row, col, base, bit;
+    char dotsym;
+    vm_8bit byte;
+
+    fprintf(stream, "HIRES DUMP\n\nBytes:\n");
+
+    for (row = 0; row < 192; row++) {
+        base = addresses[row];
+
+        fprintf(stream, "%3d  [", row);
+
+        for (col = 0; col < 40; col++) {
+            fprintf(stream, "%02X", mos6502_get(mach->cpu, base + col));
+
+            if (col < 39) {
+                fprintf(stream, " ");
+            }
+        }
+
+        fprintf(stream, "]\n");
+    }
+
+    fprintf(stream, "\nDots:\n");
+
+    for (row = 0; row < 192; row++) {
+        base = addresses[row];
+
+        fprintf(stream, "%3d  [", row);
+
+        for (col = 0; col < 40; col++) {
+            byte = mos6502_get(mach->cpu, base + col);
+            dotsym = (byte & 0x80) ? '#' : '%';
+            for (bit = 0; bit < 7; bit++) {
+                fprintf(stream, "%c", ((byte >> bit) & 1) ? dotsym : '_');
+            }
+        }
+
+        fprintf(stream, "]\n");
+    }
+}
diff --git a/src/vm_debug.c b/src/vm_debug.c
index 5c9d071..2c58f4e 100644
--- a/src/vm_debug.c
+++ b/src/vm_debug.c
@@ -10,6 +10,7 @@
 #include <strings.h>
 
 #include "apple2.h"
+#include "apple2.hires.h"
 #include "mos6502.h"
 #include "mos6502.dis.h"
 #include "vm_debug.h"
@@ -43,6 +44,8 @@ vm_debug_cmd cmdtable[] = {
         "Print out this list of commands", },
     { "hdump", "hd", vm_debug_cmd_hdump, 2, "<from> <to>",
         "Hex dump memory in a given region", },
+    { "hidump", "hid", vm_debug_cmd_hidump, 1, "<file>",
+        "Dump hires graphics memory to file", },
     { "jump", "j", vm_debug_cmd_jump, 1, "<addr>",
         "Jump to <addr> for next execution", },
     { "printaddr", "pa", vm_debug_cmd_printaddr, 1, "<addr>",
@@ -245,13 +248,8 @@ vm_debug_execute(const char *str)
             break;
 
         case 1:
-            args.addr1 = vm_debug_addr(vm_debug_next_arg(&ebuf));
-
-            // Oh no
-            if (args.addr1 == -1) {
-                free(orig);
-                return;
-            }
+            args.target = vm_debug_next_arg(&ebuf);
+            args.addr1 = vm_debug_addr(args.target);
 
             break;
 
@@ -471,3 +469,18 @@ DEBUG_CMD(hdump)
 
     vm_segment_hexdump(cpu->rmem, stream, args->addr1, args->addr2);
 }
+
+DEBUG_CMD(hidump)
+{
+    FILE *stream;
+
+    stream = fopen(args->target, "w");
+    if (stream == NULL) {
+        return;
+    }
+
+    apple2 *mach = (apple2 *)vm_di_get(VM_MACHINE);
+    apple2_hires_dump(mach, stream);
+
+    fclose(stream);
+}