4 files changed, 29 insertions, 2 deletions
diff --git a/apps/plugins/rockboy/Makefile b/apps/plugins/rockboy/Makefile
index c257f00..f40783c 100644
--- a/apps/plugins/rockboy/Makefile
+++ b/apps/plugins/rockboy/Makefile
@@ -22,6 +22,7 @@ SRC = cpu.c emu.c events.c exports.c fastmem.c hw.c lcd.c lcdc.c loader.c \
 	main.c mem.c nosound.c rccmds.c rcvars.c rtc.c save.c sound.c split.c \
 	sys_rockbox.c rockboy.c menu.c
 
+#CFLAGS += -DGRAYSCALE
 #CFLAGS += -DDYNAREC
 #SRC += dynarec.c
 
diff --git a/apps/plugins/rockboy/lcd.c b/apps/plugins/rockboy/lcd.c
index 16a97e3..e202e72 100644
--- a/apps/plugins/rockboy/lcd.c
+++ b/apps/plugins/rockboy/lcd.c
@@ -754,8 +754,12 @@ void lcd_refreshline(void)
 #if LCD_HEIGHT == 64
     scanline_ind = (L/2) % 8;
 #else
+#ifdef GRAYSCALE
+    scanline_ind = L % 4;
+#else
     scanline_ind = L % 8;
 #endif
+#endif
     X = R_SCX;
     Y = (R_SCY + L) & 0xff;
     S = X >> 3;
@@ -797,7 +801,11 @@ void lcd_refreshline(void)
     if (scale == 1) density = 1;
     dest = vdest;
 */
+#ifdef GRAYSCALE
+    if (scanline_ind == 3)
+#else
     if (scanline_ind == 7)
+#endif
         vid_update(L);
   //  vdest += fb.pitch * scale;
 }
diff --git a/apps/plugins/rockboy/lcd.h b/apps/plugins/rockboy/lcd.h
index 4911f85..776c859 100644
--- a/apps/plugins/rockboy/lcd.h
+++ b/apps/plugins/rockboy/lcd.h
@@ -16,7 +16,11 @@ struct scan
 {
 	int bg[64];
 	int wnd[64];
-	byte buf[8][256];
+#ifdef GRAYSCALE
+        byte buf[4][256];
+#else
+        byte buf[8][256];
+#endif
 	byte pal1[128];
 	un16 pal2[64];
 	un32 pal4[64];
diff --git a/apps/plugins/rockboy/sys_rockbox.c b/apps/plugins/rockboy/sys_rockbox.c
index 1cce814..9f6b588 100644
--- a/apps/plugins/rockboy/sys_rockbox.c
+++ b/apps/plugins/rockboy/sys_rockbox.c
@@ -236,9 +236,22 @@ void vid_update(int scanline)
 #else /* LCD_HEIGHT != 64, iRiver */
     if (fb.mode==1)
       scanline-=16;
+#ifdef GRAYSCALE
+    scanline_remapped = scanline / 4;
+#else
     scanline_remapped = scanline / 8;
+#endif	    
     frameb = rb->lcd_framebuffer + scanline_remapped * LCD_WIDTH;
     while (cnt < 160) {
+#ifdef GRAYSCALE
+        *(frameb++) = (scan.buf[0][cnt]&0x3) |
+                      ((scan.buf[1][cnt]&0x3)<<2) |
+                      ((scan.buf[2][cnt]&0x3)<<4) |
+                      ((scan.buf[3][cnt]&0x3)<<6);
+        cnt++;
+    }
+    rb->lcd_update_rect(0, scanline & ~3, LCD_WIDTH, 4); //8);
+#else	    
         register unsigned scrbyte = 0;
         if (scan.buf[0][cnt] & 0x02)  scrbyte |= 0x01;
         if (scan.buf[1][cnt] & 0x02)  scrbyte |= 0x02;
@@ -252,7 +265,8 @@ void vid_update(int scanline)
         cnt++;
     }
     rb->lcd_update_rect(0, scanline & ~7, LCD_WIDTH, 8);
-#endif
+#endif /* GRAYSCALE */
+#endif /* LCD_HEIGHT */
 }
 
 void vid_end(void)