diff --git a/src/mame/drivers/sauro.c b/src/mame/drivers/sauro.c
index 246ea0e953c..9bb18420aa0 100644
--- a/src/mame/drivers/sauro.c
+++ b/src/mame/drivers/sauro.c
@@ -11,7 +11,7 @@ Main CPU
 Memory mapped:
 
 0000-dfff   ROM
-e000-e7ff   RAM
+e000-e7ff   RAM, battery backed
 e800-ebff   Sprite RAM
 f000-fbff   Background Video RAM
 f400-ffff   Background Color RAM
@@ -136,7 +136,7 @@ static WRITE8_DEVICE_HANDLER( adpcm_w )
 
 static ADDRESS_MAP_START( sauro_map, ADDRESS_SPACE_PROGRAM, 8 )
 	AM_RANGE(0x0000, 0xdfff) AM_ROM
-	AM_RANGE(0xe000, 0xe7ff) AM_RAM
+	AM_RANGE(0xe000, 0xe7ff) AM_RAM AM_BASE(&generic_nvram) AM_SIZE(&generic_nvram_size)
 	AM_RANGE(0xe800, 0xebff) AM_RAM AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
 	AM_RANGE(0xf000, 0xf3ff) AM_RAM_WRITE(tecfri_videoram_w) AM_BASE(&tecfri_videoram)
 	AM_RANGE(0xf400, 0xf7ff) AM_RAM_WRITE(tecfri_colorram_w) AM_BASE(&tecfri_colorram)
@@ -182,7 +182,7 @@ ADDRESS_MAP_END
 
 static ADDRESS_MAP_START( trckydoc_map, ADDRESS_SPACE_PROGRAM, 8 )
 	AM_RANGE(0x0000, 0xdfff) AM_ROM
-	AM_RANGE(0xe000, 0xe7ff) AM_RAM
+	AM_RANGE(0xe000, 0xe7ff) AM_RAM AM_BASE(&generic_nvram) AM_SIZE(&generic_nvram_size)
 	AM_RANGE(0xe800, 0xebff) AM_RAM AM_MIRROR(0x400) AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
 	AM_RANGE(0xf000, 0xf3ff) AM_RAM_WRITE(tecfri_videoram_w) AM_BASE(&tecfri_videoram)
 	AM_RANGE(0xf400, 0xf7ff) AM_RAM_WRITE(tecfri_colorram_w) AM_BASE(&tecfri_colorram)
@@ -337,6 +337,8 @@ static MACHINE_DRIVER_START( tecfri )
 	MDRV_CPU_ADD("maincpu", Z80, XTAL_20MHz/4)       /* verified on pcb */
 	MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)
 
+	MDRV_NVRAM_HANDLER(generic_1fill)
+
 	/* video hardware */
 	MDRV_SCREEN_ADD("screen", RASTER)
 	MDRV_SCREEN_REFRESH_RATE(55.72)   /* verified on pcb */