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Diffstat (limited to 'src/devices/cpu/cop400/cop400.h')
-rw-r--r--src/devices/cpu/cop400/cop400.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/devices/cpu/cop400/cop400.h b/src/devices/cpu/cop400/cop400.h
index bace4710008..2f907afc933 100644
--- a/src/devices/cpu/cop400/cop400.h
+++ b/src/devices/cpu/cop400/cop400.h
@@ -20,6 +20,9 @@
cop400_cpu_device::set_read_l_callback(*device, DEVCB_##_devcb);
#define MCFG_COP400_WRITE_L_CB(_devcb) \
cop400_cpu_device::set_write_l_callback(*device, DEVCB_##_devcb);
+// output state when pins are in tri-state, default 0
+#define MCFG_COP400_READ_L_TRISTATE_CB(_devcb) \
+ cop400_cpu_device::set_read_l_tristate_callback(*device, DEVCB_##_devcb);
// G pins: 4-bit bi-directional
#define MCFG_COP400_READ_G_CB(_devcb) \
@@ -125,6 +128,7 @@ public:
// static configuration helpers
template<class _Object> static devcb_base &set_read_l_callback(device_t &device, _Object object) { return downcast<cop400_cpu_device &>(device).m_read_l.set_callback(object); }
+ template<class _Object> static devcb_base &set_read_l_tristate_callback(device_t &device, _Object object) { return downcast<cop400_cpu_device &>(device).m_read_l_tristate.set_callback(object); }
template<class _Object> static devcb_base &set_write_l_callback(device_t &device, _Object object) { return downcast<cop400_cpu_device &>(device).m_write_l.set_callback(object); }
template<class _Object> static devcb_base &set_read_g_callback(device_t &device, _Object object) { return downcast<cop400_cpu_device &>(device).m_read_g.set_callback(object); }
template<class _Object> static devcb_base &set_write_g_callback(device_t &device, _Object object) { return downcast<cop400_cpu_device &>(device).m_write_g.set_callback(object); }
@@ -176,6 +180,7 @@ protected:
// i/o handlers
devcb_read8 m_read_l;
+ devcb_read8 m_read_l_tristate;
devcb_write8 m_write_l;
devcb_read8 m_read_g;
devcb_write8 m_write_g;