diff --git a/include/vm_screen.h b/include/vm_screen.h
index 2152fb9..88b7e31 100644
--- a/include/vm_screen.h
+++ b/include/vm_screen.h
@@ -7,14 +7,6 @@
 #define VM_SCREEN_DEFWIDTH 800
 #define VM_SCREEN_DEFHEIGHT 600
 
-/*
- * If you just want to plot a single pixel, you can use this macro to
- * abstract away the need to indicate the x/y dimensions (as those must
- * necessarily be 1x1).
- */
-#define vm_screen_draw_pixel(screen, xpos, ypos) \
-    vm_screen_draw_rect(screen, xpos, ypos, 1, 1)
-
 typedef struct {
     int xoff;
     int yoff;
@@ -54,7 +46,7 @@ extern int vm_screen_init();
 extern int vm_screen_xcoords(vm_screen *);
 extern int vm_screen_ycoords(vm_screen *);
 extern vm_screen *vm_screen_create();
-extern void vm_screen_draw_rect(vm_screen *, int, int, int, int);
+extern void vm_screen_draw_rect(vm_screen *, vm_area *);
 extern void vm_screen_finish();
 extern void vm_screen_free(vm_screen *);
 extern void vm_screen_refresh(vm_screen *);
diff --git a/src/apple2.draw.c b/src/apple2.draw.c
index b0bc4e8..a8da6e7 100644
--- a/src/apple2.draw.c
+++ b/src/apple2.draw.c
@@ -42,7 +42,7 @@ apple2_draw_pixel_lores(apple2 *mach, vm_16bit addr)
 {
     vm_8bit color = vm_segment_get(mach->memory, addr);
     vm_8bit top, bottom;
-    SDL_Rect loc;
+    vm_area loc;
     int *colors;
 
     // The top color is the low order nibble, so we can blank out the
@@ -53,18 +53,23 @@ apple2_draw_pixel_lores(apple2 *mach, vm_16bit addr)
     bottom = color >> 4;
 
     // The next thing we need to consider is where we draw the pixel
-    loc.x = (addr & 0xff) * mach->sysfont->width;
-    loc.y = (addr >> 8) * mach->sysfont->height;
-    loc.w = mach->sysfont->width;
-    loc.h = mach->sysfont->height / 2;
+    loc.xoff = (addr & 0xff) * mach->sysfont->width;
+    loc.yoff = (addr >> 8) * mach->sysfont->height;
+    loc.width = mach->sysfont->width;
+    loc.height = mach->sysfont->height / 2;
 
     colors = lores_colors[top];
     vm_screen_set_color(mach->screen, colors[0], colors[1], colors[2], 255);
-    vm_screen_draw_rect(mach->screen, loc.x, loc.y, loc.w, loc.h); 
+    vm_screen_draw_rect(mach->screen, &loc); 
+
+    // The bottom pixel we need to draw now must be offset by the height
+    // of the pixel we just drew. (Remember, positive equals down in the
+    // y-axis.)
+    loc.yoff += loc.height;
 
     colors = lores_colors[bottom];
     vm_screen_set_color(mach->screen, colors[0], colors[1], colors[2], 255);
-    vm_screen_draw_rect(mach->screen, loc.x, loc.y + loc.h, loc.w, loc.h);
+    vm_screen_draw_rect(mach->screen, &loc);
 }
 
 void
diff --git a/src/vm_screen.c b/src/vm_screen.c
index 7b1a3cd..b946323 100644
--- a/src/vm_screen.c
+++ b/src/vm_screen.c
@@ -204,20 +204,11 @@ vm_screen_set_color(vm_screen *screen,
  * set of x/y dimensions, with a given screen.
  */
 void
-vm_screen_draw_rect(vm_screen *screen,
-                    int xpos,
-                    int ypos,
-                    int xsize,
-                    int ysize)
+vm_screen_draw_rect(vm_screen *screen, vm_area *area)
 {
-    SDL_Rect rect; 
-
     // The renderer will take care of translating the positions and
     // sizes into whatever the window is really at.
-    rect.x = xpos;
-    rect.y = ypos;
-    rect.w = xsize;
-    rect.h = ysize;
+    MAKE_SDL_RECT(rect, *area);
 
     SDL_RenderFillRect(screen->render, &rect);
 }