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-rw-r--r--src/devices/bus/odyssey2/ktaa.h45
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diff --git a/src/devices/bus/odyssey2/ktaa.h b/src/devices/bus/odyssey2/ktaa.h
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+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol, Fabio Priuli, hap
+/**********************************************************************
+
+ Homebrew KTAA cartridge emulation
+
+**********************************************************************/
+
+#ifndef MAME_BUS_ODYSSEY2_KTAA_H
+#define MAME_BUS_ODYSSEY2_KTAA_H
+
+#pragma once
+
+#include "slot.h"
+
+
+// ======================> o2_ktaa_device
+
+class o2_ktaa_device : public device_t,
+ public device_o2_cart_interface
+{
+public:
+ // construction/destruction
+ o2_ktaa_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+protected:
+ // device-level overrides
+ virtual void device_start() override;
+
+ virtual void cart_init() override;
+
+ virtual u8 read_rom04(offs_t offset) override;
+ virtual u8 read_rom0c(offs_t offset) override;
+
+ virtual void write_p1(u8 data) override { m_bank = data & m_bank_mask; }
+
+private:
+ u8 m_bank_mask = 0;
+ u8 m_bank = 0;
+};
+
+// device type definition
+DECLARE_DEVICE_TYPE(O2_ROM_KTAA, o2_ktaa_device)
+
+#endif // MAME_BUS_ODYSSEY2_KTAA_H