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-rw-r--r--src/devices/bus/spectrum/intf1.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/devices/bus/spectrum/intf1.h b/src/devices/bus/spectrum/intf1.h
index b128c42ea92..33e1e42d312 100644
--- a/src/devices/bus/spectrum/intf1.h
+++ b/src/devices/bus/spectrum/intf1.h
@@ -40,11 +40,15 @@ protected:
virtual void pre_opcode_fetch(offs_t offset) override;
virtual void post_opcode_fetch(offs_t offset) override;
virtual uint8_t mreq_r(offs_t offset) override;
- virtual void mreq_w(offs_t offset, uint8_t data) override;
virtual uint8_t iorq_r(offs_t offset) override;
virtual void iorq_w(offs_t offset, uint8_t data) override;
virtual DECLARE_READ_LINE_MEMBER(romcs) override;
+ // passthru
+ virtual void pre_data_fetch(offs_t offset) override { m_exp->pre_data_fetch(offset); };
+ virtual void post_data_fetch(offs_t offset) override { m_exp->post_data_fetch(offset); };
+ virtual void mreq_w(offs_t offset, uint8_t data) override { if (m_exp->romcs()) m_exp->mreq_w(offset, data); }
+
private:
required_device<spectrum_expansion_slot_device> m_exp;
required_device<rs232_port_device> m_rs232;