diff --git a/src/mame/drivers/bbc.cpp b/src/mame/drivers/bbc.cpp
index 4c4526ef930..84a1511adc4 100644
--- a/src/mame/drivers/bbc.cpp
+++ b/src/mame/drivers/bbc.cpp
@@ -1487,6 +1487,15 @@ static MACHINE_CONFIG_DERIVED( bbcmarm, bbcm )
 MACHINE_CONFIG_END
 
 
+static MACHINE_CONFIG_DERIVED( discmate, bbcm )
+
+	/* Add Sony CDK-3000PII Auto Disc Loader */
+
+	/* Add interface boards connected to cassette and RS423 */
+
+MACHINE_CONFIG_END
+
+
 /***************************************************************************
 
     BBC Master Compact
@@ -1959,8 +1968,8 @@ ROM_START(bbcm)
 
 	ROM_REGION(0x40,"rtc",0) /* mc146818 */
 	/* Factory defaulted CMOS RAM, sets default language ROM, etc. */
-	ROMX_LOAD("mos350.cmos", 0x00, 0x40, CRC(e84c1854) SHA1(f3cb7f12b7432caba28d067f01af575779220aac), ROM_BIOS(1))
-	ROMX_LOAD("mos320.cmos", 0x00, 0x40, CRC(c7f9e85a) SHA1(f24cc9db0525910689219f7204bf8b864033ee94), ROM_BIOS(2))
+	ROMX_LOAD("mos320.cmos", 0x00, 0x40, CRC(c7f9e85a) SHA1(f24cc9db0525910689219f7204bf8b864033ee94), ROM_BIOS(1))
+	ROMX_LOAD("mos350.cmos", 0x00, 0x40, CRC(e84c1854) SHA1(f3cb7f12b7432caba28d067f01af575779220aac), ROM_BIOS(2))
 ROM_END
 
 
@@ -2185,6 +2194,42 @@ ROM_START(pro128s)
 ROM_END
 
 
+ROM_START(discmate)
+	ROM_REGION(0x10000, "maincpu", ROMREGION_ERASEFF) /* ROM MEMORY */
+
+	ROM_REGION(0x44000, "option", 0) /* ROM */
+	ROM_DEFAULT_BIOS("mos320")
+	ROM_SYSTEM_BIOS(0, "mos320", "Original MOS 3.20")
+	ROMX_LOAD("mos320.ic24", 0x20000, 0x20000, CRC(0f747ebe) SHA1(eacacbec3892dc4809ad5800e6c8299ff9eb528f), ROM_BIOS(1))
+	ROM_COPY("option", 0x20000, 0x40000, 0x4000) /* Move loaded roms into place */
+	ROM_FILL(0x20000, 0x4000, 0xFFFF)
+	/* 00000 rom 0   SK3 Rear Cartridge bottom 16K */
+	/* 04000 rom 1   SK3 Rear Cartridge top 16K */
+	/* 08000 rom 2   SK4 Front Cartridge bottom 16K */
+	/* 0c000 rom 3   SK4 Front Cartridge top 16K */
+	/* 10000 rom 4   IC41 SWRAM or bottom 16K */
+	/* 14000 rom 5   IC41 SWRAM or top 16K */
+	/* 18000 rom 6   IC37 SWRAM or bottom 16K */
+	/* 1c000 rom 7   IC37 SWRAM or top 16K */
+	/* 20000 rom 8   IC27 Discmaster */
+	/* 24000 rom 9   IC24 DFS + SRAM */
+	/* 28000 rom 10  IC24 Viewsheet */
+	/* 2c000 rom 11  IC24 Edit */
+	/* 30000 rom 12  IC24 BASIC */
+	/* 34000 rom 13  IC24 ADFS */
+	/* 38000 rom 14  IC24 View + MOS code */
+	/* 3c000 rom 15  IC24 Terminal + Tube host + CFS */
+	ROM_LOAD("discmaster303.rom", 0x20000, 0x4000, CRC(73974057) SHA1(79f99eae62ab46818386ab8a67fe50319ae30226))
+
+	ROM_REGION(0x4000, "os", 0)
+	ROM_COPY("option", 0x40000, 0, 0x4000)
+
+	ROM_REGION(0x40, "rtc", 0) /* mc146818 */
+	 /* Factory defaulted CMOS RAM, sets default language ROM, etc. */
+	ROMX_LOAD("mos320.cmos", 0x00, 0x40, CRC(c7f9e85a) SHA1(f24cc9db0525910689219f7204bf8b864033ee94), ROM_BIOS(1))
+ROM_END
+
+
 #define rom_ltmpbp rom_bbcbp
 #define rom_ltmpm rom_bbcm
 
@@ -2214,3 +2259,5 @@ COMP ( 1986, ltmpm,    bbcm,    0,     ltmpm,    ltmpm,  bbc_state,   bbc,     "
 COMP ( 1986, bbcmc,    0,       bbcm,  bbcmc,    bbcm,   bbc_state,   bbc,     "Acorn",           "BBC Master Compact",            MACHINE_IMPERFECT_GRAPHICS)
 COMP ( 1986, bbcmc_ar, bbcmc,   0,     bbcmc,    bbcm,   bbc_state,   bbc,     "Acorn",           "BBC Master Compact (Arabic)",   MACHINE_IMPERFECT_GRAPHICS)
 COMP ( 1987, pro128s,  bbcmc,   0,     pro128s,  bbcm,   bbc_state,   bbc,     "Olivetti",        "Prodest PC 128S",               MACHINE_IMPERFECT_GRAPHICS)
+//COMP ( 1988, discmon,  bbcm,    0,     discmon,  bbcm,   bbc_state,   bbc,     "Arbiter Leisure", "Arbiter Discmonitor A-01",      MACHINE_NOT_WORKING)
+COMP ( 1988, discmate, bbcm,    0,     discmate, bbcm,   bbc_state,   bbc,     "Arbiter Leisure", "Arbiter Discmate A-02",         MACHINE_NOT_WORKING)
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index 1d61ed55838..b97586bb079 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -2560,6 +2560,7 @@ bbcmc                           // 1986 BBC Master Compact
 bbcmc_ar                        // 1986 BBC Master Compact (Arabic)
 bbcmet                          // 1986 BBC Master ET
 bbcmt                           // 1986 BBC Master Turbo
+discmate                        // 1988 Arbiter Discmate
 ltmpbp                          // 1985 LTM Portable (B+)
 ltmpm                           // 1986 LTM Portable (Master)
 pro128s                         // 1987 Olivetti Prodest PC 128S