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Diffstat (limited to 'src/devices/bus/cbus/pc9801_snd.h')
-rw-r--r--src/devices/bus/cbus/pc9801_snd.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/src/devices/bus/cbus/pc9801_snd.h b/src/devices/bus/cbus/pc9801_snd.h
index c7408c09383..0c9c694a4e3 100644
--- a/src/devices/bus/cbus/pc9801_snd.h
+++ b/src/devices/bus/cbus/pc9801_snd.h
@@ -18,11 +18,13 @@ public:
pc9801_snd_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
protected:
- uint8_t opn_porta_r();
- void opn_portb_w(uint8_t data);
+ u8 opn_porta_r();
+ void opn_portb_w(u8 data);
+ u16 m_io_base;
+ virtual u16 read_io_base() = 0;
private:
- uint8_t m_joy_sel;
+ u8 m_joy_sel;
};
//DECLARE_DEVICE_TYPE(PC9801_SND, pc9801_snd_device)