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Diffstat (limited to 'src/mame/drivers/special.cpp')
-rw-r--r--src/mame/drivers/special.cpp9
1 files changed, 6 insertions, 3 deletions
diff --git a/src/mame/drivers/special.cpp b/src/mame/drivers/special.cpp
index 944ca60d82e..84afade68c7 100644
--- a/src/mame/drivers/special.cpp
+++ b/src/mame/drivers/special.cpp
@@ -402,7 +402,8 @@ MACHINE_CONFIG_START(special_state::special)
MCFG_SOFTWARE_LIST_ADD("cass_list","special_cass")
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(special_state::specialp, special)
+MACHINE_CONFIG_START(special_state::specialp)
+ special(config);
/* basic machine hardware */
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_PROGRAM_MAP(specialp_mem)
@@ -414,7 +415,8 @@ MACHINE_CONFIG_DERIVED(special_state::specialp, special)
MCFG_VIDEO_START_OVERRIDE(special_state,specialp)
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(special_state::specialm, special)
+MACHINE_CONFIG_START(special_state::specialm)
+ special(config);
MCFG_DEVICE_REMOVE("ppi8255")
MCFG_DEVICE_ADD("ppi8255", I8255, 0)
MCFG_I8255_IN_PORTA_CB(READ8(special_state, specialist_8255_porta_r))
@@ -425,7 +427,8 @@ MACHINE_CONFIG_DERIVED(special_state::specialm, special)
MCFG_I8255_OUT_PORTC_CB(WRITE8(special_state, specialist_8255_portc_w))
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(special_state::specimx, special)
+MACHINE_CONFIG_START(special_state::specimx)
+ special(config);
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_PROGRAM_MAP(specimx_mem)