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Diffstat (limited to 'trunk/src/emu/machine/upd7201.h')
-rw-r--r-- | trunk/src/emu/machine/upd7201.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/trunk/src/emu/machine/upd7201.h b/trunk/src/emu/machine/upd7201.h new file mode 100644 index 00000000000..90d65d53f7d --- /dev/null +++ b/trunk/src/emu/machine/upd7201.h @@ -0,0 +1,151 @@ +/********************************************************************** + + NEC uPD7201 Multiprotocol Serial Communications Controller + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +********************************************************************** + _____ _____ + CLK 1 |* \_/ | 40 Vcc + _RESET 2 | | 39 _CTSA + _DCDA 3 | | 38 _RTSA + _RxCB 4 | | 37 TxDA + _DCDB 5 | | 36 _TxCA + _CTSB 6 | | 35 _RxCA + _TxCB 7 | | 34 RxDA + TxDB 8 | | 33 _SYNCA + RxDB 9 | | 32 _WAITA/DRQRxA + _RTSB/_SYNCB 10 | UPD7201 | 31 _DTRA/_HAO + _WAITB/_DRQTxA 11 | | 30 _PRO/DRQTxB + D7 12 | | 29 _PRI/DRQRxB + D6 13 | | 28 _INT + D5 14 | | 27 _INTAK + D4 15 | | 26 _DTRB/_HAI + D3 16 | | 25 B/_A + D2 17 | | 24 C/_D + D1 18 | | 23 _CS + D0 19 | | 22 _RD + Vss 20 |_____________| 21 _WR + +**********************************************************************/ + +#pragma once + +#ifndef __UPD7201__ +#define __UPD7201__ + +#include "emu.h" + + + +//************************************************************************** +// INTERFACE CONFIGURATION MACROS +//************************************************************************** + +#define MCFG_UPD7201_ADD(_tag, _clock, _config) \ + MCFG_DEVICE_ADD((_tag), UPD7201, _clock) \ + MCFG_DEVICE_CONFIG(_config) + +#define UPD7201_INTERFACE(name) \ + const upd7201_interface (name) = + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> upd7201_interface + +struct upd7201_interface +{ + devcb_write_line m_out_int_cb; + + struct + { + int m_rx_clock; + int m_tx_clock; + + devcb_write_line m_out_drqrx_cb; + devcb_write_line m_out_drqtx_cb; + + devcb_read_line m_in_rxd_cb; + devcb_write_line m_out_txd_cb; + + devcb_read_line m_in_cts_cb; + devcb_read_line m_in_dcd_cb; + devcb_write_line m_out_rts_cb; + devcb_write_line m_out_dtr_cb; + + devcb_write_line m_out_wait_cb; + devcb_write_line m_out_sync_cb; + } m_channel[2]; +}; + + + +// ======================> upd7201_device + +class upd7201_device : public device_t, + public upd7201_interface +{ +public: + // construction/destruction + upd7201_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + DECLARE_READ8_MEMBER( cd_ba_r ); + DECLARE_WRITE8_MEMBER( cd_ba_w ); + DECLARE_READ8_MEMBER( ba_cd_r ); + DECLARE_WRITE8_MEMBER( ba_cd_w ); + + DECLARE_READ8_MEMBER( intak_r ); + + DECLARE_WRITE_LINE_MEMBER( synca_w ); + DECLARE_WRITE_LINE_MEMBER( syncb_w ); + DECLARE_WRITE_LINE_MEMBER( ctsa_w ); + DECLARE_WRITE_LINE_MEMBER( ctsb_w ); + DECLARE_READ_LINE_MEMBER( dtra_r ); + DECLARE_READ_LINE_MEMBER( dtrb_r ); + DECLARE_WRITE_LINE_MEMBER( hai_w ); + DECLARE_WRITE_LINE_MEMBER( rxda_w ); + DECLARE_READ_LINE_MEMBER( txda_r ); + DECLARE_WRITE_LINE_MEMBER( rxdb_w ); + DECLARE_READ_LINE_MEMBER( txdb_r ); + DECLARE_WRITE_LINE_MEMBER( rxca_w ); + DECLARE_WRITE_LINE_MEMBER( rxcb_w ); + DECLARE_WRITE_LINE_MEMBER( txca_w ); + DECLARE_WRITE_LINE_MEMBER( txcb_w ); + +protected: + // device-level overrides + virtual void device_config_complete(); + virtual void device_start(); + virtual void device_reset(); + virtual void device_timer(emu_timer &timer, device_timer_id id, int m_param, void *ptr); + +private: + static const device_timer_id TIMER_RX_A = 0; + static const device_timer_id TIMER_TX_A = 1; + static const device_timer_id TIMER_RX_B = 2; + static const device_timer_id TIMER_TX_B = 3; + + inline void receive(int channel); + inline void transmit(int channel); + + devcb_resolved_write_line m_out_int_func; + + // timers + emu_timer *m_rx_a_timer; + emu_timer *m_tx_a_timer; + emu_timer *m_rx_b_timer; + emu_timer *m_tx_b_timer; +}; + + +// device type definition +extern const device_type UPD7201; + + + +#endif |