mirror of
https://github.com/holub/mame
synced 2025-05-30 17:41:47 +03:00
118 lines
3.4 KiB
C++
118 lines
3.4 KiB
C++
/**********************************************************************
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MOS Technology 8722 Memory Management Unit 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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Vdd 1 |* \_/ | 48 SENSE40
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_RESET 2 | | 47 (MS3) 128/64
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TA15 3 | | 46 _EXROM
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TA14 4 | | 45 _GAME
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TA13 5 | | 44 FSDIR
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TA12 6 | | 43 _Z80EN
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TA11 7 | | 42 D7
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TA10 8 | | 41 D6
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TA9 9 | | 40 D5
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TA8 10 | | 39 D4
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_CAS1 11 | | 38 D3
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_CAS0 12 | MOS8722 | 37 D2
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I/O SEL (MS2) 13 | | 36 D1
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ROMBANK1 (MS1) 14 | | 35 D0
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ROMBANK0 (MS0) 15 | | 34 Vss
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AEC 16 | | 33 phi0
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MUX 17 | | 32 R/_W
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A0 18 | | 31 A15
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A1 19 | | 30 A14
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A2 20 | | 29 A13
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A3 21 | | 28 A12
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A4/A5 22 | | 27 A11
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A6/A7 23 | | 26 A10
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A8 24 |_____________| 25 A9
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**********************************************************************/
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#pragma once
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#ifndef __MOS8722__
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#define __MOS8722__
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#include "emu.h"
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//**************************************************************************
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// INTERFACE CONFIGURATION MACROS
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//**************************************************************************
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#define MCFG_MOS8722_ADD(_tag, _config) \
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MCFG_DEVICE_ADD(_tag, MOS8722, 0) \
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MCFG_DEVICE_CONFIG(_config)
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#define MOS8722_INTERFACE(name) \
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const mos8722_interface (name) =
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> mos8722_interface
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struct mos8722_interface
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{
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devcb_write_line m_out_z80en_cb;
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devcb_write_line m_out_fsdir_cb;
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devcb_read_line m_in_game_cb;
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devcb_read_line m_in_exrom_cb;
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devcb_read_line m_in_sense40_cb;
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};
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// ======================> mos8722_device
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class mos8722_device : public device_t,
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public mos8722_interface
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{
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public:
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// construction/destruction
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mos8722_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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UINT8 read(offs_t offset, UINT8 data);
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DECLARE_WRITE8_MEMBER( write );
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DECLARE_READ_LINE_MEMBER( fsdir_r );
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offs_t ta_r(offs_t offset, int aec, int *ms0, int *ms1, int *ms2, int *ms3, int *cas0, int *cas1);
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protected:
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// device-level overrides
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virtual void device_config_complete();
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virtual void device_start();
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virtual void device_reset();
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private:
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devcb_resolved_write_line m_out_z80en_func;
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devcb_resolved_write_line m_out_fsdir_func;
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devcb_resolved_read_line m_in_game_func;
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devcb_resolved_read_line m_in_exrom_func;
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devcb_resolved_read_line m_in_sense40_func;
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UINT8 m_reg[16];
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UINT8 m_p0h_latch;
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UINT8 m_p1h_latch;
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};
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// device type definition
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extern const device_type MOS8722;
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#endif
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