diff --git a/src/mess/drivers/dps1.c b/src/mess/drivers/dps1.c
index 947dcc24e85..39ee0ef2db6 100644
--- a/src/mess/drivers/dps1.c
+++ b/src/mess/drivers/dps1.c
@@ -11,6 +11,7 @@ public:
 
 static ADDRESS_MAP_START( dps1_mem, AS_PROGRAM, 8, dps1_state )
 	AM_RANGE(0x0000, 0x03ff) AM_ROM AM_REGION("maincpu", 0)
+	AM_RANGE(0x2000, 0x2fff) AM_RAM
 ADDRESS_MAP_END
 
 static ADDRESS_MAP_START( dps1_io, AS_IO, 8, dps1_state )
@@ -34,4 +35,4 @@ ROM_START( dps1 )
 	ROM_LOAD( "boot 1280", 0x000, 0x400, CRC(9c2e98fa) SHA1(78e6c9d00aa6e8f6c4d3c65984cfdf4e99434c66) ) // actually on the FDC-2 board
 ROM_END
 
-COMP( 1979, dps1,    0,      0,      dps1,        dps1, driver_device, 0,      "Ithaca InterSystems",  "DPS-1",  GAME_NOT_WORKING | GAME_NO_SOUND_HW )
+COMP( 1979, dps1, 0, 0, dps1, dps1, driver_device, 0, "Ithaca InterSystems", "DPS-1", GAME_NOT_WORKING | GAME_NO_SOUND_HW )
diff --git a/src/mess/drivers/grfd2301.c b/src/mess/drivers/grfd2301.c
index 8d5d6c16ec8..3ece884f2ec 100644
--- a/src/mess/drivers/grfd2301.c
+++ b/src/mess/drivers/grfd2301.c
@@ -7,7 +7,7 @@ Genrad Futuredata 2301 Network Control Processor
 Has a number of plug-in daughter boards, some of which are:
 - CPU board: Mostek Z80 CPU, 24MHz crystal, 2 eproms (U2.PB72.2300.4039 1.0 ; U23.N.C.P.2300.4023 3.0)
 - IO board: 5.0688MHz crystal, D8253C, 2x S2651
-- Memory board: 16 static ram consisting of 32x TMS2147H-7 chips, 1 prom? with sticker U36.2300.4035 1.0
+- Memory board: 16k static ram consisting of 32x TMS2147H-7 chips, 1 prom? with sticker U36.2300.4035 1.0
 - 2301 board: 2x D8253C, 4x S2651
 
 Back panel has a number of DB25 sockets, labelled thus:
diff --git a/src/mess/drivers/seattle.c b/src/mess/drivers/seattle.c
index 85eb106bafc..f0398ff3f25 100644
--- a/src/mess/drivers/seattle.c
+++ b/src/mess/drivers/seattle.c
@@ -5,7 +5,7 @@ one serial and 2 parallel connections.
 
 2013-08-14 Skeleton driver.
 
-When started you must press Enter before anything happens.
+When started you must press Enter twice before anything happens.
 
 All commands must be in UPPER case.