diff --git a/index.html b/index.html
index 7e38bf5d..18e47cf1 100644
--- a/index.html
+++ b/index.html
@@ -37,6 +37,9 @@ body {
       <li><a class="dropdown-item" href="#" id="item_share_file">Share File as GitHub Gist...</a></li>
       <li><a class="dropdown-item" href="#" id="item_reset_file">Revert to Original...</a></li>
       <li><a class="dropdown-item" href="#" id="item_download_rom">Download ROM Image...</a></li>
+      <!--
+      <li><a class="dropdown-item" href="#" id="item_record_video">Record Video...</a></li>
+      -->
       <li class="dropdown dropdown-submenu">
           <a tabindex="-1" href="#">Platform</a>
           <ul class="dropdown-menu">
diff --git a/presets/coleco/cursorsmooth.c b/presets/coleco/cursorsmooth.c
index b0d60fd6..5d7dd673 100644
--- a/presets/coleco/cursorsmooth.c
+++ b/presets/coleco/cursorsmooth.c
@@ -1,8 +1,8 @@
 
 #include <stdint.h>
 
-const uint8_t sprite[0x1][0x20] = {
-  {0xa0, 0x40, 0xa0, 0x10, 0xa, 0x4, 0xa, 0, 0, 0xa, 0x4, 0xa, 0x10, 0xa0, 0x40, 0xa0, 0x5, 0x2, 0x5, 0x8, 0x50, 0x20, 0x50, 0, 0, 0x50, 0x20, 0x50, 0x8, 0x5, 0x2, 0x5}
+const uint8_t sprite[0x1][0x20] = {/*{w:16,h:16,remap:[4,0,1,2,3],brev:1}*/
+  {0xa0, 0x40, 0xa0, 0x10, 0xa, 0x4, 0xa, 0x0, 0x0, 0xa, 0x4, 0xa, 0x10, 0xa0, 0x40, 0xa0, 0x5, 0x2, 0x5, 0x8, 0x50, 0x20, 0x50, 0x0, 0x0, 0x50, 0x20, 0x50, 0x8, 0x5, 0x2, 0x5}
 };
 
 #include "cv.h"
diff --git a/presets/coleco/lines.c b/presets/coleco/lines.c
new file mode 100644
index 00000000..883ecc70
--- /dev/null
+++ b/presets/coleco/lines.c
@@ -0,0 +1,94 @@
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "cv.h"
+#include "cvu.h"
+
+#define PATTERN ((const cv_vmemp)0x0)
+#define COLOR ((const cv_vmemp)0x2000)
+#define IMAGE ((const cv_vmemp)0x1800)
+
+#define COLS 32
+#define ROWS 24
+
+typedef unsigned char byte;
+typedef signed char sbyte;
+typedef unsigned short word;
+
+void setup_mode2() {
+  cvu_vmemset(0, 0, 0x4000);
+  cv_set_screen_mode(CV_SCREENMODE_BITMAP); // mode 2
+  cv_set_image_table(IMAGE);
+  cv_set_character_pattern_t(PATTERN|0x1fff); // AND mask
+  cv_set_color_table(COLOR|0xfff); // AND mask
+  cv_set_sprite_attribute_table(0x2800);
+  {
+    byte i=0;
+    do {
+      cvu_voutb(i, IMAGE+i);
+      cvu_voutb(i, IMAGE+0x100+i);
+      cvu_voutb(i, IMAGE+0x200+i);
+    } while (++i);
+  }
+}
+
+void set_pixel(byte x, byte y, byte color) {
+  word ofs = (x/8)*8 + (y/8)*256 + (y&7);
+  byte b = cvu_vinb(PATTERN + ofs);
+  if (y >= 192) return;
+  if (color>1) {
+    b |= 128 >> (x&7);
+    cvu_voutb(b, PATTERN + ofs);
+    cvu_voutb(color<<4, COLOR + ofs);
+  } else {
+    b &= ~(128 >> (x&7));
+    cvu_voutb(b, PATTERN + ofs);
+  }
+}
+
+void draw_line(int x0, int y0, int x1, int y1, byte color)
+{
+    int dx, dy, p, x, y;
+    dx=x1-x0;
+    dy=y1-y0;
+    x=x0;
+    y=y0;
+    p=2*dy-dx;
+    while(x<x1)
+    {
+        if(p>=0)
+        {
+            set_pixel(x,y,color);
+            y=y+1;
+            p=p+2*dy-2*dx;
+        }
+        else
+        {
+            set_pixel(x,y,color);
+            p=p+2*dy;
+        }
+        x=x+1;
+    }
+}
+
+void main() {
+  setup_mode2();
+  cv_set_screen_active(true);
+  while(1)
+  draw_line(rand()&0xff, rand()&0xff, rand()&0xff, rand()&0xff, rand()&15);
+  /*
+  set_pixel(0, 0, 2);
+  set_pixel(1, 0, 2);
+  set_pixel(0, 1, 2);
+  set_pixel(2, 2, 2);
+  set_pixel(3, 3, 2);
+  set_pixel(0, 7, 4);
+  set_pixel(7, 7, 4);
+  set_pixel(8, 7, 4);
+  set_pixel(0, 8, 4);
+  draw_line(20,0,210,150,2);
+  while(1);
+  */
+}
diff --git a/presets/coleco/mode2.c b/presets/coleco/mode2.c
new file mode 100644
index 00000000..4be293e2
--- /dev/null
+++ b/presets/coleco/mode2.c
@@ -0,0 +1,97 @@
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "cv.h"
+#include "cvu.h"
+
+#define PATTERN ((const cv_vmemp)0x0)
+#define COLOR ((const cv_vmemp)0x2000)
+#define IMAGE ((const cv_vmemp)0x1800)
+
+#define COLS 32
+#define ROWS 24
+
+uintptr_t __at(0x6a) font_bitmap_a;
+uintptr_t __at(0x6c) font_bitmap_0;
+
+void setup_32_column_font() {
+  cvu_vmemset(0, 0, 0x4000);
+  cv_set_image_table(IMAGE);
+  cvu_memtovmemcpy(PATTERN, (void *)(font_bitmap_0 - '0'*8), 0x800);
+  cvu_memtovmemcpy(PATTERN+0x800, (void *)(font_bitmap_0 - '0'*2), 0x800);
+  cvu_memtovmemcpy(PATTERN+0x1000, (void *)(font_bitmap_0 - '0'*0), 0x800);
+  cv_set_character_pattern_t(PATTERN|0x1fff); // AND mask
+  cv_set_screen_mode(CV_SCREENMODE_BITMAP); // mode 2
+  cv_set_color_table(0x2000|0xfff); // AND mask
+  {
+    int i;
+    for (i=0; i<0x800; i++)
+      cvu_voutb((i&15)|0x2, COLOR+i);
+    for (i=0x800; i<0x1000; i++)
+      cvu_voutb(((i&15)|0x2)<<4, COLOR+i);
+  }
+}
+
+char cursor_x;
+char cursor_y;
+
+void clrscr() {
+  cvu_vmemset(IMAGE, ' ', COLS*ROWS);
+}
+
+void setup_stdio() {
+  cursor_x = 0;
+  cursor_y = 0;
+  clrscr();
+}
+
+void scrollup() {
+  char buf[COLS];
+  char y;
+  for (y=0; y<ROWS-1; y++) {
+    cvu_vmemtomemcpy(buf, IMAGE + COLS*y + COLS, COLS);
+    cvu_memtovmemcpy(IMAGE + COLS*y, buf, COLS);
+  }
+  cvu_vmemset(IMAGE + COLS*(ROWS-1), ' ', COLS);
+}
+
+void newline() {
+  if (cursor_y >= ROWS-1) {
+    scrollup();
+  } else {
+    cursor_y++;
+  }
+}
+
+int putchar(int ch) {
+  switch (ch) {
+    case '\n':
+      newline(); // TODO: scrolling
+    case '\r':
+      cursor_x = 0;
+      return 0;
+  }
+  cvu_voutb(ch, IMAGE + COLS*cursor_y + cursor_x);
+  cursor_x++;
+  if (cursor_x >= COLS) {
+    newline();
+    cursor_x = 0;
+  }
+}
+
+void main() {
+  unsigned char byteval = 123;
+  signed char charval = 123;
+  short shortval = 12345;
+  
+  setup_32_column_font();
+  setup_stdio();
+  cv_set_screen_active(true);
+  printf("HELLO WORLD!\n");
+  while (1) {
+    printf("char %d byte %u sh %d\n",
+      charval++, byteval++, shortval++);
+  }
+}
diff --git a/presets/coleco/multicolor.c b/presets/coleco/multicolor.c
new file mode 100644
index 00000000..bac1599c
--- /dev/null
+++ b/presets/coleco/multicolor.c
@@ -0,0 +1,88 @@
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "cv.h"
+#include "cvu.h"
+
+#define PATTERN ((const cv_vmemp)0x0000)
+#define IMAGE ((const cv_vmemp)0x1800)
+
+#define COLS 64
+#define ROWS 48
+
+typedef unsigned char byte;
+typedef signed char sbyte;
+typedef unsigned short word;
+
+uintptr_t __at(0x6a) font_bitmap_a;
+uintptr_t __at(0x6c) font_bitmap_0;
+
+void setup_multicolor() {
+  cvu_vmemset(0, 0, 0x4000);
+  cv_set_image_table(IMAGE);
+  cv_set_character_pattern_t(PATTERN);
+  cv_set_screen_mode(CV_SCREENMODE_MULTICOLOR); // mode 3
+  // set image table
+  {
+    byte x,y;
+    word ofs = IMAGE;
+    for (y=0; y<ROWS; y++) {
+      for (x=0; x<COLS/2; x++) {
+        cvu_voutb(x + (y>>2)*COLS/2, ofs++);
+      }
+    }
+  }
+}
+
+static word next_pg[4] = { 0, 0, 0, 0 };
+
+void set_pixel(byte x, byte y, byte color) {
+  word pg = (x>>1) * 8 + (y & 7) + (y & ~7)*32;
+  byte b = cvu_vinb(pg);
+  b |= (x & 1) ? color : color<<4;
+  cvu_voutb(b, PATTERN + pg);
+}
+
+void draw_line(sbyte x0, sbyte y0, sbyte x1, sbyte y1, byte color)
+{
+    int dx, dy, p, x, y;
+    dx=x1-x0;
+    dy=y1-y0;
+    x=x0;
+    y=y0;
+    p=2*dy-dx;
+    while(x<x1)
+    {
+        if(p>=0)
+        {
+            set_pixel(x,y,color);
+            y=y+1;
+            p=p+2*dy-2*dx;
+        }
+        else
+        {
+            set_pixel(x,y,color);
+            p=p+2*dy;
+        }
+        x=x+1;
+    }
+}
+ 
+void main() {
+  setup_multicolor();
+  set_pixel(0, 0, 4);
+  set_pixel(1, 0, 4);
+  set_pixel(COLS-1, 0, 4);
+  set_pixel(0, 1, 6);
+  set_pixel(0, 2, 6);
+  set_pixel(0, 3, 6);
+  set_pixel(1, 4, 4);
+  set_pixel(2, 6, 5);
+  set_pixel(4, 7, 5);
+  set_pixel(7, 7, 5);
+  set_pixel(8, 8, 5);
+  draw_line(0, 0, COLS-1, ROWS-1, 2);
+  cv_set_screen_active(true);
+  while (1);
+}
diff --git a/presets/coleco/skeleton.sdcc b/presets/coleco/skeleton.sdcc
new file mode 100644
index 00000000..36eaa9fc
--- /dev/null
+++ b/presets/coleco/skeleton.sdcc
@@ -0,0 +1,83 @@
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "cv.h"
+#include "cvu.h"
+
+#define COLOR ((const cv_vmemp)0x2000)
+#define IMAGE ((const cv_vmemp)0x1c00)
+
+#define COLS 32
+#define ROWS 24
+
+typedef unsigned char byte;
+typedef signed char sbyte;
+typedef unsigned short word;
+
+uintptr_t __at(0x6a) font_bitmap_a;
+uintptr_t __at(0x6c) font_bitmap_0;
+
+volatile bool vint;
+volatile uint_fast8_t vint_counter;
+
+void vint_handler(void)
+{
+  vint = true;
+  vint_counter++;
+}
+
+void setup_32_column_font() {
+  cv_set_image_table(IMAGE);
+  cvu_memtovmemcpy(0x1800, (void *)(font_bitmap_0 - '0'*8), 256*8);
+  cv_set_character_pattern_t(0x1800);
+  cv_set_screen_mode(CV_SCREENMODE_STANDARD);
+  cv_set_color_table(COLOR);
+  cvu_vmemset(COLOR, 0x36, 8); // set color for chars 0-63
+  cvu_vmemset(COLOR+8, 0x06, 32-8); // set chars 63-255
+}
+
+char cursor_x;
+char cursor_y;
+
+void clrscr() {
+  cvu_vmemset(IMAGE, ' ', COLS*ROWS);
+}
+
+#define LOCHAR 0x0
+#define HICHAR 0xff
+
+#define CHAR(ch) (ch-LOCHAR)
+
+byte getchar(byte x, byte y) {
+  return cvu_vinb(IMAGE + y*COLS + x);
+}
+
+void putchar(byte x, byte y, byte attr) {
+  cvu_voutb(attr, IMAGE + y*COLS + x);
+}
+
+void putstring(byte x, byte y, const char* string) {
+  while (*string) {
+    putchar(x++, y, CHAR(*string++));
+  }
+}
+
+void wait_vsync() {
+  vint = false;
+  while (!vint) ;
+}
+
+void delay(byte i) {
+  while (i--) {
+    wait_vsync();
+  }
+}
+
+void main() {
+  setup_32_column_font();
+  cv_set_screen_active(true);
+  cv_set_vint_handler(&vint_handler);
+
+  while(1);
+}
diff --git a/presets/galaxian-scramble/gfxtest.c b/presets/galaxian-scramble/gfxtest.c
index c49dd827..e8f38389 100644
--- a/presets/galaxian-scramble/gfxtest.c
+++ b/presets/galaxian-scramble/gfxtest.c
@@ -52,7 +52,7 @@ const char __at (0x5000) palette[32] = {/*{pal:332,n:4}*/
   0x00,0xff,0x0f,0xf0,0x00,0x7f,0x0f,0xdf,
 };
 
-const char __at (0x4000) tilerom[0x1000] = {/*{w:8,h:8,bpp:1,np:2,pofs:2048,count:256}*/
+const char __at (0x4000) tilerom[0x1000] = {/*{w:16,h:16,remap:[3,0,1,2,4,5,6,7,8,9,10],brev:1,np:2,pofs:2048,count:64}*/
 0x00,0xfe,0x82,0x82,0x82,0xfe,0xfe,0x00,0x00,0x00,0xfe,0xfe,0xc0,0x00,0x00,0x00,0x00,0xf2,0xf2,0x92,0x92,0x9e,0x9e,0x00,0x00,0xfe,0xfe,0x92,0x92,0x82,0x00,0x00,0x08,0xfe,0xfe,0x88,0x88,0xf8,0xf8,0x00,0x00,0x9e,0x9e,0x92,0x92,0xf2,0xf2,0x00,0x00,0x9e,0x92,0x92,0x92,0xfe,0xfe,0x00,0x00,0xf0,0xf0,0x9e,0x9e,0x80,0x80,0x00,0x00,0xfe,0x92,0x92,0x92,0xfe,0xfe,0x00,0x00,0xfe,0x92,0x92,0x92,0xf2,0xf0,0x00,0x00,0xfe,0xc8,0x88,0x88,0xfe,0xfe,0x00,0x00,0xee,0x92,0x92,0x92,0xfe,0xfe,0x00,0x00,0x82,0x82,0x82,0x86,0xfe,0xfe,0x00,0x00,0xfc,0x86,0x82,0x82,0xfe,0xfe,0x00,0x00,0x82,0x92,0x92,0x92,0xfe,0xfe,0x00,0x00,0x80,0x90,0x90,0x90,0xfe,0xfe,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xfe,0xc8,0x88,0x88,0xfe,0xfe,0x00,0x00,0xee,0x92,0x92,0x92,0xfe,0xfe,0x00,0x00,0x82,0x82,0x82,0x86,0xfe,0xfe,0x00,0x00,0xfc,0x86,0x82,0x82,0xfe,0xfe,0x00,0x00,0x82,0x92,0x92,0x92,0xfe,0xfe,0x00,0x80,0x90,0x90,0x90,0x90,0xfe,0xfe,0x00,0x00,0x9e,0x92,0x82,0x82,0xfe,0xfe,0x00,0xfe,0xfe,0x10,0x10,0x10,0xfe,0xfe,0x00,0x00,0x00,0xbe,0xbe,0x00,0x00,0x00,0x00,0xfc,0xfe,0x06,0x02,0x02,0x02,0x00,0x00,0x00,0x82,0x44,0x28,0x18,0xfe,0xfe,0x00,0x02,0x02,0x02,0x06,0xfe,0xfe,0x00,0x00,0xfe,0x40,0x20,0x18,0x20,0xfe,0xfe,0x00,0xfe,0x0c,0x08,0x10,0x20,0xfe,0xfe,0x00,0xfe,0x82,0x82,0x82,0x86,0xfe,0xfe,0x00,
 0x00,0xf8,0x88,0x88,0x88,0xfe,0xfe,0x00,0x7e,0x86,0x8a,0x82,0x82,0xfe,0xfe,0x00,0xf8,0x8a,0x8c,0x88,0x88,0xfe,0xfe,0x00,0x00,0x9e,0x96,0x92,0x92,0xf2,0xf2,0x00,0x80,0x80,0xfe,0xfe,0x80,0x80,0x00,0x00,0x00,0xfe,0x06,0x02,0x02,0xfe,0xfe,0x00,0xf0,0x08,0x04,0x06,0x0c,0xf8,0xf0,0x00,0xf8,0x06,0x0c,0x18,0x0c,0xfe,0xf8,0x00,0x82,0x44,0x28,0x38,0x6c,0xc6,0x82,0x00,0x80,0x40,0x30,0x1e,0x3e,0x40,0x80,0x00,0xc2,0xe2,0xb2,0x9e,0x8e,0x86,0x82,0x00,0x00,0x10,0x10,0x10,0x10,0x10,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x80,0x80,0x78,0x7e,0x3f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7e,0x78,0x80,0x80,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x10,0x28,0x07,0x07,0x03,0x00,0x00,0x00,0x00,0x00,0x80,0xe0,0xf0,0x07,0x07,0x28,0x10,0x00,0x00,0x00,0x00,0xe0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x04,0x03,0x03,0x03,0x00,0x00,0x00,0x00,0x00,0x80,0xe0,0xe0,0x07,0x27,0x18,0x00,0x00,0x00,0x00,0x00,0xf0,0xf8,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0c,0x04,0x02,0x03,0x07,0x27,0x00,0x00,0x00,0x00,0x00,0x00,0xc0,0xe0,0x3f,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0xf0,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x01,0x01,0x01,0x23,0x3f,0x07,0x00,0x00,0x00,0x00,0x80,0xc0,0xc0,0xe0,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0xe0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x13,0x1f,0x07,0x03,0x00,0x00,0x80,0x80,0x80,0xc0,0xe0,0xf0,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0xe0,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x10,0x09,0x0f,0x07,0x07,0x00,0x80,0x40,0x80,0x80,0xc0,0xc0,0xc0,0x03,0x03,0x01,0x00,0x00,0x00,0x00,0x00,0xc0,0xc0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x08,0x04,0x03,0x03,0x03,0x00,0x00,0x10,0x08,0x10,0x60,0xe0,0xe0,0x03,0x01,0x01,0x00,0x00,0x00,0x00,0x00,0xe0,0xc0,0xc0,0x80,0x00,0x00,0x00,0x00,
diff --git a/presets/galaxian-scramble/shoot2.c b/presets/galaxian-scramble/shoot2.c
index 28849750..2e334365 100644
--- a/presets/galaxian-scramble/shoot2.c
+++ b/presets/galaxian-scramble/shoot2.c
@@ -97,7 +97,7 @@ const char __at (0x5000) palette[32] = {/*{pal:332,n:4}*/
   0x00,0xff,0x0f,0xf0,0x00,0x7f,0x0f,0xdf,
 };
 
-const char __at (0x4000) tilerom[0x1000] = {/*{w:8,h:8,bpp:1,np:2,pofs:2048,count:256}*/
+const char __at (0x4000) tilerom[0x1000] = {/*{w:16,h:16,remap:[3,0,1,2,4,5,6,7,8,9,10],brev:1,np:2,pofs:2048,count:64}*/
 0x00,0xfe,0x82,0x82,0x82,0xfe,0xfe,0x00,0x00,0x00,0xfe,0xfe,0xc0,0x00,0x00,0x00,0x00,0xf2,0xf2,0x92,0x92,0x9e,0x9e,0x00,0x00,0xfe,0xfe,0x92,0x92,0x82,0x00,0x00,0x08,0xfe,0xfe,0x88,0x88,0xf8,0xf8,0x00,0x00,0x9e,0x9e,0x92,0x92,0xf2,0xf2,0x00,0x00,0x9e,0x92,0x92,0x92,0xfe,0xfe,0x00,0x00,0xf0,0xf0,0x9e,0x9e,0x80,0x80,0x00,0x00,0xfe,0x92,0x92,0x92,0xfe,0xfe,0x00,0x00,0xfe,0x92,0x92,0x92,0xf2,0xf0,0x00,0x00,0xfe,0xc8,0x88,0x88,0xfe,0xfe,0x00,0x00,0xee,0x92,0x92,0x92,0xfe,0xfe,0x00,0x00,0x82,0x82,0x82,0x86,0xfe,0xfe,0x00,0x00,0xfc,0x86,0x82,0x82,0xfe,0xfe,0x00,0x00,0x82,0x92,0x92,0x92,0xfe,0xfe,0x00,0x00,0x80,0x90,0x90,0x90,0xfe,0xfe,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xfe,0xc8,0x88,0x88,0xfe,0xfe,0x00,0x00,0xee,0x92,0x92,0x92,0xfe,0xfe,0x00,0x00,0x82,0x82,0x82,0x86,0xfe,0xfe,0x00,0x00,0xfc,0x86,0x82,0x82,0xfe,0xfe,0x00,0x00,0x82,0x92,0x92,0x92,0xfe,0xfe,0x00,0x80,0x90,0x90,0x90,0x90,0xfe,0xfe,0x00,0x00,0x9e,0x92,0x82,0x82,0xfe,0xfe,0x00,0xfe,0xfe,0x10,0x10,0x10,0xfe,0xfe,0x00,0x00,0x00,0xbe,0xbe,0x00,0x00,0x00,0x00,0xfc,0xfe,0x06,0x02,0x02,0x02,0x00,0x00,0x00,0x82,0x44,0x28,0x18,0xfe,0xfe,0x00,0x02,0x02,0x02,0x06,0xfe,0xfe,0x00,0x00,0xfe,0x40,0x20,0x18,0x20,0xfe,0xfe,0x00,0xfe,0x0c,0x08,0x10,0x20,0xfe,0xfe,0x00,0xfe,0x82,0x82,0x82,0x86,0xfe,0xfe,0x00,
 0x00,0xf8,0x88,0x88,0x88,0xfe,0xfe,0x00,0x7e,0x86,0x8a,0x82,0x82,0xfe,0xfe,0x00,0xf8,0x8a,0x8c,0x88,0x88,0xfe,0xfe,0x00,0x00,0x9e,0x96,0x92,0x92,0xf2,0xf2,0x00,0x80,0x80,0xfe,0xfe,0x80,0x80,0x00,0x00,0x00,0xfe,0x06,0x02,0x02,0xfe,0xfe,0x00,0xf0,0x08,0x04,0x06,0x0c,0xf8,0xf0,0x00,0xf8,0x06,0x0c,0x18,0x0c,0xfe,0xf8,0x00,0x82,0x44,0x28,0x38,0x6c,0xc6,0x82,0x00,0x80,0x40,0x30,0x1e,0x3e,0x40,0x80,0x00,0xc2,0xe2,0xb2,0x9e,0x8e,0x86,0x82,0x00,0x00,0x10,0x10,0x10,0x10,0x10,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x80,0x80,0x78,0x7e,0x3f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7e,0x78,0x80,0x80,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x10,0x28,0x07,0x07,0x03,0x00,0x00,0x00,0x00,0x00,0x80,0xe0,0xf0,0x07,0x07,0x28,0x10,0x00,0x00,0x00,0x00,0xe0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x04,0x03,0x03,0x03,0x00,0x00,0x00,0x00,0x00,0x80,0xe0,0xe0,0x07,0x27,0x18,0x00,0x00,0x00,0x00,0x00,0xf0,0xf8,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0c,0x04,0x02,0x03,0x07,0x27,0x00,0x00,0x00,0x00,0x00,0x00,0xc0,0xe0,0x3f,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0xf0,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x01,0x01,0x01,0x23,0x3f,0x07,0x00,0x00,0x00,0x00,0x80,0xc0,0xc0,0xe0,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0xe0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x13,0x1f,0x07,0x03,0x00,0x00,0x80,0x80,0x80,0xc0,0xe0,0xf0,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0xe0,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x10,0x09,0x0f,0x07,0x07,0x00,0x80,0x40,0x80,0x80,0xc0,0xc0,0xc0,0x03,0x03,0x01,0x00,0x00,0x00,0x00,0x00,0xc0,0xc0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x08,0x04,0x03,0x03,0x03,0x00,0x00,0x10,0x08,0x10,0x60,0xe0,0xe0,0x03,0x01,0x01,0x00,0x00,0x00,0x00,0x00,0xe0,0xc0,0xc0,0x80,0x00,0x00,0x00,0x00,
diff --git a/presets/vector-z80color/game.c b/presets/vector-z80color/game.c
index 7fa16e05..fcad4288 100644
--- a/presets/vector-z80color/game.c
+++ b/presets/vector-z80color/game.c
@@ -1,7 +1,6 @@
 
 #include <string.h>
-#include <malloc.h>
-#include <stdio.h>
+#include <stdlib.h>
 
 typedef unsigned char byte;
 typedef unsigned short word;
@@ -35,6 +34,7 @@ byte __at (0x8980) watchdog;
 //
 
 void main();
+void __sdcc_heap_init(void); // for malloc()
 
 void start() {
 __asm
@@ -48,6 +48,7 @@ __asm
         LDIR
 __endasm;
   // init heap for malloc() and run main pgm.
+  __sdcc_heap_init();
   main();
 }
 
@@ -360,15 +361,6 @@ void draw_wireframe_ortho(const Wireframe* wf, const Matrix* m) {
   } while (1);
 }
 
-static word lfsr = 1;
-
-word rand() {
-  byte lsb = lfsr & 1;
-  lfsr >>= 1;
-  if (lsb) lfsr ^= 0xd400;
-  return lfsr;
-}
-
 // SHAPE CACHE
 
 const Vector8 tetra_v[] = { {0,-86,86},{86,86,86},{-86,86,86},{0,0,-86} };
@@ -527,10 +519,6 @@ void draw_actor_rect(Actor* a) {
   VCTR(0,-86*2,2);
 }
 
-inline byte abs(sbyte x) {
-  return (x>=0) ? x : -x;
-}
-
 inline word get_distance_squared(byte dx, byte dy) {
   mathbox_sum = 0;
   mul16(dx,dx);
diff --git a/presets/vector-z80color/skeleton.sdcc b/presets/vector-z80color/skeleton.sdcc
index a686ffca..3598d7bd 100644
--- a/presets/vector-z80color/skeleton.sdcc
+++ b/presets/vector-z80color/skeleton.sdcc
@@ -1,6 +1,5 @@
 
 #include <string.h>
-#include <malloc.h>
 
 typedef unsigned char byte;
 typedef unsigned short word;
@@ -34,7 +33,6 @@ byte __at (0x8980) watchdog;
 //
 
 void main();
-void _sdcc_heap_init(void); // for malloc()
 
 void start() {
 __asm
@@ -47,8 +45,6 @@ __asm
         LD    HL, #s__INITIALIZER
         LDIR
 __endasm;
-  // init heap for malloc() and run main pgm.
-  _sdcc_heap_init();
   main();
 }
 
diff --git a/presets/vector-z80color/threed.c b/presets/vector-z80color/threed.c
index c0b4c658..38cee5f2 100644
--- a/presets/vector-z80color/threed.c
+++ b/presets/vector-z80color/threed.c
@@ -1,3 +1,4 @@
+
 #include <string.h>
 
 typedef unsigned char byte;
diff --git a/src/pixed/pixeleditor.js b/src/pixed/pixeleditor.js
index 968a2137..0d65c377 100644
--- a/src/pixed/pixeleditor.js
+++ b/src/pixed/pixeleditor.js
@@ -199,23 +199,39 @@ function replaceHexBytes(s, bytes) {
   return result;
 }
 
+function remapBits(x, arr) {
+  if (!arr) return x;
+  var y = 0;
+  for (var i=0; i<arr.length; i++) {
+    var s = arr[i];
+    if (s < 0) {
+      s = -s-1;
+      y ^= 1 << s;
+    }
+    if (x & (1 << i)) {
+      y ^= 1 << s;
+    }
+  }
+  return y;
+}
+
 function convertBytesToImages(bytes, fmt) {
-  var count = fmt.count ? fmt.count : 1;
   var width = fmt.w;
   var height = fmt.h;
-  var bpp = fmt.bpp ? fmt.bpp : 1;
-  var bytesperline = fmt.sl ? fmt.sl : Math.ceil(width * bpp / 8);
-  //console.log(width,height,bytesperline);
+  var count = fmt.count || 1;
+  var bpp = fmt.bpp || 1;
+  var nplanes = fmt.np || 1;
+  var bytesperline = fmt.sl || Math.ceil(width * bpp / 8);
   var mask = (1 << bpp)-1;
   var images = [];
-  var nplanes = fmt.np ? fmt.np : 1;
   for (var n=0; n<count; n++) {
     var imgdata = [];
     for (var y=0; y<height; y++) {
-      var ofs = n*bytesperline*height + y*bytesperline;
+      var ofs0 = n*bytesperline*height + y*bytesperline;
       var shift = 0;
       for (var x=0; x<width; x++) {
         var color = 0;
+        var ofs = remapBits(ofs0, fmt.remap);
         for (var p=0; p<nplanes; p++) {
           var byte = bytes[ofs + p*(fmt.pofs|0)];
           color |= ((fmt.brev ? byte>>(8-shift-bpp) : byte>>shift) & mask) << (p*bpp);
@@ -223,7 +239,7 @@ function convertBytesToImages(bytes, fmt) {
         imgdata.push(color);
         shift += bpp;
         if (shift >= 8) {
-          ofs += 1;
+          ofs0 += 1;
           shift = 0;
         }
       }
@@ -234,29 +250,30 @@ function convertBytesToImages(bytes, fmt) {
 }
 
 function convertImagesToBytes(images, fmt) {
-  var count = fmt.count ? fmt.count : 1;
   var width = fmt.w;
   var height = fmt.h;
-  var bpp = fmt.bpp ? fmt.bpp : 1;
-  var bytesperline = fmt.sl ? fmt.sl : Math.ceil(fmt.w * bpp / 8);
+  var count = fmt.count || 1;
+  var bpp = fmt.bpp || 1;
+  var nplanes = fmt.np || 1;
+  var bytesperline = fmt.sl || Math.ceil(fmt.w * bpp / 8);
   var mask = (1 << bpp)-1;
-  var nplanes = fmt.np ? fmt.np : 1;
   var bytes = new Uint8Array(bytesperline * height * nplanes * count);
   for (var n=0; n<count; n++) {
     var imgdata = images[n];
     var i = 0;
     for (var y=0; y<height; y++) {
-      var ofs = n*bytesperline*height + y*bytesperline;
+      var ofs0 = n*bytesperline*height + y*bytesperline;
       var shift = 0;
       for (var x=0; x<width; x++) {
         var color = imgdata[i++];
+        var ofs = remapBits(ofs0, fmt.remap);
         for (var p=0; p<nplanes; p++) {
           var c = (color >> (p*bpp)) & mask;
           bytes[ofs + p*(fmt.pofs|0)] |= (fmt.brev ? (c << (8-shift-bpp)) : (c << shift));
         }
         shift += bpp;
         if (shift >= 8) {
-          ofs += 1;
+          ofs0 += 1;
           shift = 0;
         }
       }
diff --git a/src/platform/coleco.js b/src/platform/coleco.js
index 678df996..9d7e5e83 100644
--- a/src/platform/coleco.js
+++ b/src/platform/coleco.js
@@ -9,6 +9,7 @@
 // http://bifi.msxnet.org/msxnet//tech/tms9918a.txt
 // http://www.colecovision.dk/tools.htm?refreshed
 // http://www.theadamresource.com/manuals/technical/ColecoVision%20Coding%20Guide.pdf
+// http://www.unige.ch/medecine/nouspikel/ti99/tms9918a.htm
 
 var ColecoVision_PRESETS = [
   {id:'text.c', name:'Text Mode'},
diff --git a/test/cli/testworker.js b/test/cli/testworker.js
index d1b1d030..57112474 100644
--- a/test/cli/testworker.js
+++ b/test/cli/testworker.js
@@ -145,16 +145,20 @@ describe('Worker', function() {
   });
   it('should compile vector skeleton', function(done) {
     var csource = ab2str(fs.readFileSync('presets/vector-z80color/skeleton.sdcc'));
-    compile('sdcc', csource, 'vector-z80color', done, 32768, 24, 0);
+    compile('sdcc', csource, 'vector-z80color', done, 32768, 23, 0);
   });
   it('should compile williams skeleton', function(done) {
     var csource = ab2str(fs.readFileSync('presets/williams-z80/skeleton.sdcc'));
-    compile('sdcc', csource, 'williams-z80', done, 38912, 39, 0);
+    compile('sdcc', csource, 'williams-z80', done, 38912, 38, 0);
   });
   it('should compile williams_sound skeleton', function(done) {
     var csource = ab2str(fs.readFileSync('presets/sound_williams-z80/skeleton.sdcc'));
     compile('sdcc', csource, 'sound_williams-z80', done, 16384, 6, 0);
   });
+  it('should compile coleco skeleton', function(done) {
+    var csource = ab2str(fs.readFileSync('presets/coleco/skeleton.sdcc'));
+    compile('sdcc', csource, 'coleco', done, 32768, 31, 0);
+  });
   it('should NOT compile SDCC', function(done) {
     compile('sdcc', 'foobar', 'mw8080bw', done, 0, 0, 1);
   });