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Diffstat (limited to 'src/mame/drivers/zx.cpp')
-rw-r--r--src/mame/drivers/zx.cpp18
1 files changed, 12 insertions, 6 deletions
diff --git a/src/mame/drivers/zx.cpp b/src/mame/drivers/zx.cpp
index d7318b779a2..4c3e72ea523 100644
--- a/src/mame/drivers/zx.cpp
+++ b/src/mame/drivers/zx.cpp
@@ -352,7 +352,8 @@ MACHINE_CONFIG_START(zx_state::zx80)
MCFG_RAM_EXTRA_OPTIONS("1K,2K,3K,16K")
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(zx_state::zx81, zx80)
+MACHINE_CONFIG_START(zx_state::zx81)
+ zx80(config);
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_PROGRAM_MAP(zx81_map)
MCFG_CPU_IO_MAP(zx81_io_map)
@@ -370,7 +371,8 @@ MACHINE_CONFIG_DERIVED(zx_state::zx81, zx80)
MCFG_RAM_EXTRA_OPTIONS("1K,32K,48K")
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(zx_state::zx81_spk, zx81 )
+MACHINE_CONFIG_START(zx_state::zx81_spk )
+ zx81(config);
/* sound hardware */
/* Used by pc8300/lambda/pow3000 */
MCFG_SPEAKER_STANDARD_MONO("mono")
@@ -380,20 +382,23 @@ MACHINE_CONFIG_DERIVED(zx_state::zx81_spk, zx81 )
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(zx_state::ts1000, zx81)
+MACHINE_CONFIG_START(zx_state::ts1000)
+ zx81(config);
/* internal ram */
MCFG_RAM_MODIFY(RAM_TAG)
MCFG_RAM_DEFAULT_SIZE("2K")
MCFG_RAM_EXTRA_OPTIONS("1K,16K,32K,48K")
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(zx_state::ts1500, ts1000)
+MACHINE_CONFIG_START(zx_state::ts1500)
+ ts1000(config);
/* internal ram */
MCFG_RAM_MODIFY(RAM_TAG)
MCFG_RAM_DEFAULT_SIZE("16K")
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(zx_state::pc8300, zx81_spk)
+MACHINE_CONFIG_START(zx_state::pc8300)
+ zx81_spk(config);
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_IO_MAP(pc8300_io_map)
@@ -402,7 +407,8 @@ MACHINE_CONFIG_DERIVED(zx_state::pc8300, zx81_spk)
MCFG_RAM_DEFAULT_SIZE("16K")
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(zx_state::pow3000, zx81_spk)
+MACHINE_CONFIG_START(zx_state::pow3000)
+ zx81_spk(config);
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_IO_MAP(pow3000_io_map)