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Diffstat (limited to 'src/mame/drivers/mac128.cpp')
-rw-r--r--src/mame/drivers/mac128.cpp6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/mame/drivers/mac128.cpp b/src/mame/drivers/mac128.cpp
index 43afa8e4e87..700d0439007 100644
--- a/src/mame/drivers/mac128.cpp
+++ b/src/mame/drivers/mac128.cpp
@@ -109,8 +109,8 @@ c0 8 data bits, Rx disabled
#define DAC_TAG "macdac"
#define SCC_TAG "scc"
-#define C7M (7833600)
-#define C3_7M (3916800)
+#define C7M (15.6672_MHz_XTAL / 2)
+#define C3_7M (15.6672_MHz_XTAL / 4)
// uncomment to run i8021 keyboard in original Mac/512(e)/Plus
//#define MAC_USE_EMULATED_KBD (1)
@@ -1350,7 +1350,7 @@ void mac128_state::mac512ke(machine_config &config)
/* video hardware */
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
- m_screen->set_raw(C7M*2, MAC_H_TOTAL, 0, MAC_H_VIS, MAC_V_TOTAL, 0, MAC_V_VIS);
+ m_screen->set_raw(15.6672_MHz_XTAL, MAC_H_TOTAL, 0, MAC_H_VIS, MAC_V_TOTAL, 0, MAC_V_VIS);
m_screen->set_screen_update(FUNC(mac128_state::screen_update_mac));
m_screen->set_palette("palette");