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Diffstat (limited to 'src/devices/bus/bbc/fdc/acorn.cpp')
-rw-r--r--src/devices/bus/bbc/fdc/acorn.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/devices/bus/bbc/fdc/acorn.cpp b/src/devices/bus/bbc/fdc/acorn.cpp
index 718296641a6..dd5d8f28559 100644
--- a/src/devices/bus/bbc/fdc/acorn.cpp
+++ b/src/devices/bus/bbc/fdc/acorn.cpp
@@ -91,7 +91,7 @@ ROM_END
void bbc_acorn8271_device::device_add_mconfig(machine_config &config)
{
- I8271(config, m_fdc, 16_MHz_XTAL / 8);
+ I8271(config, m_fdc, DERIVED_CLOCK(1, 4));
m_fdc->intrq_wr_callback().set(DEVICE_SELF_OWNER, FUNC(bbc_fdc_slot_device::intrq_w));
m_fdc->hdl_wr_callback().set(FUNC(bbc_acorn8271_device::motor_w));
m_fdc->opt_wr_callback().set(FUNC(bbc_acorn8271_device::side_w));
@@ -102,7 +102,7 @@ void bbc_acorn8271_device::device_add_mconfig(machine_config &config)
void bbc_acorn1770_device::device_add_mconfig(machine_config &config)
{
- WD1770(config, m_fdc, 16_MHz_XTAL / 2);
+ WD1770(config, m_fdc, DERIVED_CLOCK(1, 1));
m_fdc->set_force_ready(true);
m_fdc->intrq_wr_callback().set(FUNC(bbc_acorn1770_device::fdc_intrq_w));
m_fdc->drq_wr_callback().set(FUNC(bbc_acorn1770_device::fdc_drq_w));