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https://github.com/holub/mame
synced 2025-05-17 03:10:43 +03:00
Imported the MC68901 device from MESS so it can be shared with micro3d.c. [Curt Coder]
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Curt Coder
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2
.gitattributes
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2
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vendored
@ -810,6 +810,8 @@ src/emu/machine/mb87078.c svneol=native#text/plain
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src/emu/machine/mb87078.h svneol=native#text/plain
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src/emu/machine/mc146818.c svneol=native#text/plain
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src/emu/machine/mc146818.h svneol=native#text/plain
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src/emu/machine/mc68901.c svneol=native#text/plain
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src/emu/machine/mc68901.h svneol=native#text/plain
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src/emu/machine/microtch.c svneol=native#text/plain
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src/emu/machine/microtch.h svneol=native#text/plain
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src/emu/machine/msm6242.c svneol=native#text/plain
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@ -182,6 +182,7 @@ EMUMACHINEOBJS = \
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$(EMUMACHINE)/mb3773.o \
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$(EMUMACHINE)/mb87078.o \
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$(EMUMACHINE)/mc146818.o \
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$(EMUMACHINE)/mc68901.o \
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$(EMUMACHINE)/microtch.o \
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$(EMUMACHINE)/msm6242.o \
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$(EMUMACHINE)/nvram.o \
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1486
src/emu/machine/mc68901.c
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1486
src/emu/machine/mc68901.c
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File diff suppressed because it is too large
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257
src/emu/machine/mc68901.h
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257
src/emu/machine/mc68901.h
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/**********************************************************************
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Motorola MC68901 Multi Function Peripheral emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************
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_____ _____
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R/_W 1 |* \_/ | 48 _CS
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RS1 2 | | 47 _DS
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RS2 3 | | 46 _DTACK
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RS3 4 | | 45 _IACK
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RS4 5 | | 44 D7
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RS5 6 | | 43 D6
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TC 7 | | 42 D5
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SO 8 | | 41 D4
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SI 9 | | 40 D3
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RC 10 | | 39 D2
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Vcc 11 | | 38 D1
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NC 12 | MC68901 | 37 D0
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TAO 13 | MK68901 | 36 GND
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TBO 14 | | 35 CLK
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TCO 15 | | 34 _IEI
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TDO 16 | | 33 _IEO
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XTAL1 17 | | 32 _IRQ
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XTAL2 18 | | 31 _RR
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TAI 19 | | 30 _TR
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TBI 20 | | 29 I7
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_RESET 21 | | 28 I6
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I0 22 | | 27 I5
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I1 23 | | 26 I4
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I2 24 |_____________| 25 I3
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**********************************************************************/
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#pragma once
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#ifndef __MC68901__
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#define __MC68901__
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#include "emu.h"
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//**************************************************************************
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// MACROS / CONSTANTS
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//**************************************************************************
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//**************************************************************************
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// INTERFACE CONFIGURATION MACROS
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//**************************************************************************
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#define MCFG_MC68901_ADD(_tag, _clock, _config) \
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MCFG_DEVICE_ADD((_tag), MC68901, _clock) \
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MCFG_DEVICE_CONFIG(_config)
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#define MC68901_INTERFACE(name) \
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const mc68901_interface (name) =
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> mc68901_interface
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struct mc68901_interface
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{
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int timer_clock; /* timer clock */
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int rx_clock; /* serial receive clock */
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int tx_clock; /* serial transmit clock */
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devcb_write_line out_irq_func;
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devcb_read8 in_gpio_func;
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devcb_write8 out_gpio_func;
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devcb_write_line out_tao_func;
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devcb_write_line out_tbo_func;
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devcb_write_line out_tco_func;
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devcb_write_line out_tdo_func;
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devcb_read_line in_si_func;
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devcb_write_line out_so_func;
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devcb_write_line out_rr_func;
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devcb_write_line out_tr_func;
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};
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// ======================> mc68901_device_config
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class mc68901_device_config : public device_config,
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public mc68901_interface
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{
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friend class mc68901_device;
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// construction/destruction
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mc68901_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock);
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public:
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// allocators
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static device_config *static_alloc_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock);
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virtual device_t *alloc_device(running_machine &machine) const;
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protected:
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// device_config overrides
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virtual void device_config_complete();
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};
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// ======================> mc68901_device
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class mc68901_device : public device_t
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{
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friend class mc68901_device_config;
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// construction/destruction
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mc68901_device(running_machine &_machine, const mc68901_device_config &_config);
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public:
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DECLARE_READ8_MEMBER( read );
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DECLARE_WRITE8_MEMBER( write );
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int get_vector();
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DECLARE_WRITE_LINE_MEMBER( i0_w );
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DECLARE_WRITE_LINE_MEMBER( i1_w );
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DECLARE_WRITE_LINE_MEMBER( i2_w );
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DECLARE_WRITE_LINE_MEMBER( i3_w );
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DECLARE_WRITE_LINE_MEMBER( i4_w );
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DECLARE_WRITE_LINE_MEMBER( i5_w );
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DECLARE_WRITE_LINE_MEMBER( i6_w );
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DECLARE_WRITE_LINE_MEMBER( i7_w );
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DECLARE_WRITE_LINE_MEMBER( tai_w );
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DECLARE_WRITE_LINE_MEMBER( tbi_w );
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DECLARE_WRITE_LINE_MEMBER( rc_w );
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DECLARE_WRITE_LINE_MEMBER( tc_w );
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protected:
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// device-level overrides
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virtual void device_start();
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virtual void device_reset();
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virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
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void check_interrupts();
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void take_interrupt(UINT16 mask);
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void rx_buffer_full();
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void rx_error();
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void tx_buffer_empty();
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void tx_error();
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int get_parity_bit(UINT8 b);
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void serial_receive();
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void tx_disabled();
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void tx_starting();
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void tx_break();
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void tx_enabled();
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void serial_transmit();
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void timer_count(int index);
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void timer_input(int index, int value);
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void gpio_input(int bit, int state);
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void register_w(offs_t offset, UINT8 data);
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private:
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static const device_timer_id TIMER_A = 0;
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static const device_timer_id TIMER_B = 1;
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static const device_timer_id TIMER_C = 2;
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static const device_timer_id TIMER_D = 3;
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static const device_timer_id TIMER_RX = 4;
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static const device_timer_id TIMER_TX = 5;
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devcb_resolved_read8 m_in_gpio_func;
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devcb_resolved_write8 m_out_gpio_func;
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devcb_resolved_read_line m_in_si_func;
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devcb_resolved_write_line m_out_so_func;
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devcb_resolved_write_line m_out_tao_func;
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devcb_resolved_write_line m_out_tbo_func;
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devcb_resolved_write_line m_out_tco_func;
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devcb_resolved_write_line m_out_tdo_func;
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devcb_resolved_write_line m_out_irq_func;
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int m_device_type; /* device type */
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int m_timer_clock; /* timer clock */
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/* registers */
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UINT8 m_gpip; /* general purpose I/O register */
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UINT8 m_aer; /* active edge register */
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UINT8 m_ddr; /* data direction register */
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UINT16 m_ier; /* interrupt enable register */
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UINT16 m_ipr; /* interrupt pending register */
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UINT16 m_isr; /* interrupt in-service register */
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UINT16 m_imr; /* interrupt mask register */
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UINT8 m_vr; /* vector register */
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UINT8 m_tacr; /* timer A control register */
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UINT8 m_tbcr; /* timer B control register */
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UINT8 m_tcdcr; /* timers C and D control register */
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UINT8 m_tdr[4]; /* timer data registers */
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UINT8 m_scr; /* synchronous character register */
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UINT8 m_ucr; /* USART control register */
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UINT8 m_tsr; /* transmitter status register */
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UINT8 m_rsr; /* receiver status register */
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UINT8 m_udr; /* USART data register */
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/* counter timer state */
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UINT8 m_tmc[4]; /* timer main counters */
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int m_ti[4]; /* timer in latch */
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int m_to[4]; /* timer out latch */
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/* interrupt state */
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int m_irqlevel; /* interrupt level latch */
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/* serial state */
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UINT8 m_next_rsr; /* receiver status register latch */
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int m_rsr_read; /* receiver status register read flag */
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int m_rxtx_word; /* word length */
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int m_rxtx_start; /* start bits */
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int m_rxtx_stop; /* stop bits */
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/* receive state */
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UINT8 m_rx_buffer; /* receive buffer */
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int m_rx_bits; /* receive bit count */
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int m_rx_parity; /* receive parity bit */
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int m_rx_state; /* receive state */
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/* transmit state */
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UINT8 m_tx_buffer; /* transmit buffer */
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int m_tx_bits; /* transmit bit count */
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int m_tx_parity; /* transmit parity bit */
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int m_tx_state; /* transmit state */
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int m_xmit_state; /* transmitter state */
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// timers
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emu_timer *m_timer[4]; /* counter timers */
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emu_timer *m_rx_timer; /* receive timer */
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emu_timer *m_tx_timer; /* transmit timer */
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const mc68901_device_config &m_config;
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};
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// device type definition
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extern const device_type MC68901;
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#endif
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