// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** MOS Technology 6529 Single Port Interface Adapter emulation ********************************************************************** _____ _____ R/W 1 |* \_/ | 20 Vdd P0 2 | | 19 _CS P1 3 | | 18 D0 P2 4 | | 17 D1 P3 5 | MOS6529 | 16 D2 P4 6 | | 15 D3 P5 7 | | 14 D4 P6 8 | | 13 D5 P7 9 | | 12 D6 Vss 10 |_____________| 11 D7 **********************************************************************/ #ifndef MAME_MACHINE_MOS6529_H #define MAME_MACHINE_MOS6529_H #pragma once //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> mos6529_device class mos6529_device : public device_t { public: // construction/destruction mos6529_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); template auto p_handler() { return m_p_handler[Bit].bind(); } uint8_t read(); void write(uint8_t data); void write_p0(int state) { if (state) m_input |= 1; else m_input &= ~1; } void write_p1(int state) { if (state) m_input |= 2; else m_input &= ~2; } void write_p2(int state) { if (state) m_input |= 4; else m_input &= ~4; } void write_p3(int state) { if (state) m_input |= 8; else m_input &= ~8; } void write_p4(int state) { if (state) m_input |= 16; else m_input &= ~16; } void write_p5(int state) { if (state) m_input |= 32; else m_input &= ~32; } void write_p6(int state) { if (state) m_input |= 64; else m_input &= ~64; } void write_p7(int state) { if (state) m_input |= 128; else m_input &= ~128; } protected: // device-level overrides virtual void device_start() override; uint8_t m_input; devcb_write_line::array<8> m_p_handler; }; // device type definition DECLARE_DEVICE_TYPE(MOS6529, mos6529_device) #endif // MAME_MACHINE_MOS6529_H