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author AJR <ajrhacker@users.noreply.github.com>2018-03-25 10:59:34 -0400
committer AJR <ajrhacker@users.noreply.github.com>2018-03-25 10:59:34 -0400
commit8e2275c44a033e35421af7ee3fbbb2ba590f690a (patch)
tree8f60861758f5e5fc8242697e49481098bf94d696
parent463eb4be9b380b457ddf708e0196762950e73520 (diff)
cdc721: Almost certainly runs at 6 MHz (nw)
-rw-r--r--src/mame/drivers/cdc721.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/drivers/cdc721.cpp b/src/mame/drivers/cdc721.cpp
index 4c6f9fd5e1b..be9d35bd83c 100644
--- a/src/mame/drivers/cdc721.cpp
+++ b/src/mame/drivers/cdc721.cpp
@@ -193,7 +193,7 @@ static const z80_daisy_config cdc721_daisy_chain[] =
MACHINE_CONFIG_START(cdc721_state::cdc721)
// basic machine hardware
- MCFG_CPU_ADD("maincpu", Z80, 4000000)
+ MCFG_CPU_ADD("maincpu", Z80, 6_MHz_XTAL) // Zilog Z8400B (Z80B)
MCFG_CPU_PROGRAM_MAP(mem_map)
MCFG_CPU_IO_MAP(io_map)
MCFG_Z80_DAISY_CHAIN(cdc721_daisy_chain)
@@ -215,7 +215,7 @@ MACHINE_CONFIG_START(cdc721_state::cdc721)
MCFG_DEVICE_ADD("crtc", CRT5037, 12.936_MHz_XTAL / 8)
MCFG_TMS9927_CHAR_WIDTH(8)
- MCFG_DEVICE_ADD("ctc", Z80CTC, 4000000)
+ MCFG_DEVICE_ADD("ctc", Z80CTC, 6_MHz_XTAL) // Zilog Z8430B
MCFG_Z80CTC_INTR_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0))
MCFG_DEVICE_ADD("ppi", I8255A, 0)