// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** MOS Technology 6530 MIOT, 6532 RIOT ********************************************************************** _____ _____ Vss 1 |* \_/ | 40 PA1 PA0 2 | | 39 PA2 phi2 3 | | 38 PA3 RS0 4 | | 37 PA4 A9 5 | | 36 PA5 A8 6 | | 35 PA6 A7 7 | | 34 PA7 A6 8 | | 33 DB0 R/W 9 | | 32 DB1 A5 10 | MCS6530 | 31 DB2 A4 11 | | 30 DB3 A3 12 | | 29 DB4 A2 13 | | 28 DB5 A1 14 | | 27 DB6 A0 15 | | 26 DB7 _RES 16 | | 25 PB0 IRQ/PB7 17 | | 24 PB1 CS1/PB6 18 | | 23 PB2 CS2/PB5 19 | | 22 PB3 Vcc 20 |_____________| 21 PB4 _____ _____ Vss 1 |* \_/ | 40 A6 A5 2 | | 39 phi2 A4 3 | | 38 CS1 A3 4 | | 37 _CS2 A2 5 | | 36 _RS A1 6 | | 35 R/W A0 7 | | 34 _RES PA0 8 | | 33 D0 PA1 9 | | 32 D1 PA2 10 | MCS6532 | 31 D2 PA3 11 | | 30 D3 PA4 12 | | 29 D4 PA5 13 | | 28 D5 PA6 14 | | 27 D6 PA7 15 | | 26 D7 PB7 16 | | 25 _IRQ PB6 17 | | 24 PB0 PB5 18 | | 23 PB1 PB4 19 | | 22 PB2 Vcc 20 |_____________| 21 PB3 **********************************************************************/ #ifndef MAME_MACHINE_MOS6530_H #define MAME_MACHINE_MOS6530_H #pragma once //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> mos6530_device_base class mos6530_device_base : public device_t { public: // port byte callbacks auto pa_rd_callback() { return m_in8_pa_cb.bind(); } auto pa_wr_callback() { return m_out8_pa_cb.bind(); } auto pb_rd_callback() { return m_in8_pb_cb.bind(); } auto pb_wr_callback() { return m_out8_pb_cb.bind(); } // port bit callbacks template auto pa_rd_callback() { return m_in_pa_cb[N].bind(); } template auto pa_wr_callback() { return m_out_pa_cb[N].bind(); } template auto pb_rd_callback() { return m_in_pb_cb[N].bind(); } template auto pb_wr_callback() { return m_out_pb_cb[N].bind(); } // _IRQ pin (on 6530 it's shared with PB7) auto irq_wr_callback() { return m_irq_cb.bind(); } // write to port inputs (PA7 can trigger an IRQ, the others are normal inputs) void pa_w(offs_t offset, uint8_t data, uint8_t mem_mask = 0xff); void pb_w(offs_t offset, uint8_t data, uint8_t mem_mask = 0xff); template void pa_bit_w(int state) { pa_w(0, (state & 1) << N, 1 << N); } template void pb_bit_w(int state) { pb_w(0, (state & 1) << N, 1 << N); } protected: // construction/destruction mos6530_device_base(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock, u32 rsize); // device-level overrides virtual void device_start() override ATTR_COLD; virtual void device_reset() override ATTR_COLD; enum { IRQ_EDGE = 0x40, IRQ_TIMER = 0x80 }; enum { TIMER_COUNTING, TIMER_SPINNING }; void update_pa(); virtual void update_pb(); virtual void update_irq(); virtual uint8_t get_irq_flags(); uint8_t get_timer(); void timer_start(uint8_t data); TIMER_CALLBACK_MEMBER(timer_end); void edge_detect(); void timer_w(offs_t offset, uint8_t data, bool ie); uint8_t timer_r(bool ie); uint8_t rom_r(offs_t offset) { return m_rom[offset]; } uint8_t ram_r(offs_t offset) { return m_ram[offset]; } void ram_w(offs_t offset, uint8_t data) { m_ram[offset] = data; } uint8_t pa_data_r(); void pa_data_w(uint8_t data); uint8_t pb_data_r(); void pb_data_w(uint8_t data); uint8_t pa_ddr_r() { return m_pa_ddr; } void pa_ddr_w(uint8_t data); uint8_t pb_ddr_r() { return m_pb_ddr; } void pb_ddr_w(uint8_t data); uint8_t timer_off_r(); uint8_t timer_on_r(); uint8_t irq_r(); void timer_off_w(offs_t offset, uint8_t data); void timer_on_w(offs_t offset, uint8_t data); void edge_w(offs_t offset, uint8_t data); memory_share_creator m_ram; optional_region_ptr m_rom; devcb_write_line m_irq_cb; devcb_read8 m_in8_pa_cb; devcb_write8 m_out8_pa_cb; devcb_read8 m_in8_pb_cb; devcb_write8 m_out8_pb_cb; devcb_read_line::array<8> m_in_pa_cb; devcb_write_line::array<8> m_out_pa_cb; devcb_read_line::array<8> m_in_pb_cb; devcb_write_line::array<8> m_out_pb_cb; uint8_t m_pa_in; uint8_t m_pa_out; uint8_t m_pa_ddr; int m_pa7; int m_pa7_dir; uint8_t m_pb_in; uint8_t m_pb_out; uint8_t m_pb_ddr; bool m_ie_timer; bool m_irq_timer; bool m_ie_edge; bool m_irq_edge; uint8_t m_timershift; uint8_t m_timerstate; emu_timer *m_timer; attotime m_timeout; }; class mos6530_device : public mos6530_device_base { public: // construction/destruction mos6530_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); virtual void rom_map(address_map &map) ATTR_COLD; virtual void ram_map(address_map &map) ATTR_COLD; virtual void io_map(address_map &map) ATTR_COLD; protected: // device-level overrides void update_pb() override; void update_irq() override; uint8_t get_irq_flags() override; }; class mos6532_device : public mos6530_device_base { public: // construction/destruction mos6532_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); virtual void ram_map(address_map &map) ATTR_COLD; virtual void io_map(address_map &map) ATTR_COLD; }; // device type definition DECLARE_DEVICE_TYPE(MOS6530, mos6530_device) DECLARE_DEVICE_TYPE(MOS6532, mos6532_device) #endif // MAME_MACHINE_MOS6530_H