summaryrefslogtreecommitdiffstatshomepage
path: root/src/mess/drivers/pc9801.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mess/drivers/pc9801.c')
-rw-r--r--src/mess/drivers/pc9801.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/src/mess/drivers/pc9801.c b/src/mess/drivers/pc9801.c
index 45014467e88..7394446a80b 100644
--- a/src/mess/drivers/pc9801.c
+++ b/src/mess/drivers/pc9801.c
@@ -2664,6 +2664,11 @@ static INPUT_PORTS_START( pc9821 )
PORT_DIPNAME( 0x01, 0x00, "S-Dip SW Init" ) PORT_DIPLOCATION("SW1:1")
PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+
+ PORT_MODIFY("DSW3")
+ PORT_DIPNAME( 0x40, 0x40, "Conventional RAM size" ) PORT_DIPLOCATION("SW3:7")
+ PORT_DIPSETTING( 0x40, "640 KB" )
+ PORT_DIPSETTING( 0x00, "512 KB" )
INPUT_PORTS_END
static const gfx_layout charset_8x8 =
@@ -3449,8 +3454,8 @@ static MACHINE_CONFIG_START( pc9801rs, pc9801_state )
MCFG_FLOPPY_DRIVE_ADD("upd765_2hd:1", pc9801_floppies, "525hd", 0, pc9801_state::floppy_formats)
MCFG_RAM_ADD(RAM_TAG)
- MCFG_RAM_DEFAULT_SIZE("640K")
- MCFG_RAM_EXTRA_OPTIONS("1664K,3712K,7808K")
+ MCFG_RAM_DEFAULT_SIZE("1664K")
+ MCFG_RAM_EXTRA_OPTIONS("640K,3712K,7808K")
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)