// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** VideoBrain UV201/UV202 video chip emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. ********************************************************************** _____ _____ GND 1 |* \_/ | 40 DMAREQ G 2 | | 39 /CE I 3 | | 38 RESET B 4 | | 37 BISTROBE R 5 | | 36 UMIREQ0 BA0 6 | | 35 BRCLK BA1 7 | | 34 HBLANK BA2 8 | | 33 VBLANK BA3 9 | | 32 R/W BA4 10 | UV201 | 31 keypad column 8 BA5 11 | | 30 EXT INT BA6 12 | | 29 FIELD BA7 13 | | 28 BD7 BA8 14 | | 27 BD6 BA9 15 | | 26 BD5 BA10 16 | | 25 BD4 BA11 17 | | 24 BD3 BA12 18 | | 23 BD2 +5V 19 | | 22 BD1 +12V 20 |_____________| 21 BD0 _____ _____ UMIREQ1 1 |* \_/ | 40 BISTROBE UMIREQ0 2 | | 39 CPUREQ1 CPUREQ0 3 | | 38 GND XIN 4 | | 37 /800-BFF XOUT 5 | | 36 RST DMAREQ0 6 | | 35 DMAREQ1 CPU CLK 7 | | 34 COLCLK WACK 8 | | 33 BRCLK D0 9 | | 32 D7 BD0 10 | UV202 | 31 BD7 D1 11 | | 30 D6 BD1 12 | | 29 BD6 D2 13 | | 28 D5 BD2 14 | | 27 BD5 D3 15 | | 26 D4 BD3 16 | | 25 BD4 HBLANK 17 | | 24 FIELD VBLANK 18 | | 23 SCANLINE BURST 19 | | 22 +12V CSYNCH 20 |_____________| 21 +5V **********************************************************************/ #pragma once #ifndef __UV201__ #define __UV201__ #include "emu.h" //************************************************************************** // INTERFACE CONFIGURATION MACROS //************************************************************************** #define MCFG_UV201_ADD(_tag, _screen_tag, _clock, _config) \ MCFG_SCREEN_ADD(_screen_tag, RASTER) \ MCFG_SCREEN_UPDATE_DEVICE(_tag, uv201_device, screen_update) \ MCFG_SCREEN_RAW_PARAMS(_clock, 232, 18, 232, 262, 21, 262) \ MCFG_DEVICE_ADD(_tag, UV201, _clock) \ MCFG_VIDEO_SET_SCREEN(_screen_tag) #define MCFG_UV201_EXT_INT_CALLBACK(_write) \ devcb = &uv201_device::set_ext_int_wr_callback(*device, DEVCB_##_write); #define MCFG_UV201_HBLANK_CALLBACK(_write) \ devcb = &uv201_device::set_hblank_wr_callback(*device, DEVCB_##_write); #define MCFG_UV201_DB_CALLBACK(_read) \ devcb = &uv201_device::set_db_rd_callback(*device, DEVCB_##_read); //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> uv201_device class uv201_device : public device_t, public device_video_interface { public: // construction/destruction uv201_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); template static devcb_base &set_ext_int_wr_callback(device_t &device, _Object object) { return downcast(device).m_write_ext_int.set_callback(object); } template static devcb_base &set_hblank_wr_callback(device_t &device, _Object object) { return downcast(device).m_write_hblank.set_callback(object); } template static devcb_base &set_db_rd_callback(device_t &device, _Object object) { return downcast(device).m_read_db.set_callback(object); } DECLARE_READ8_MEMBER( read ); DECLARE_WRITE8_MEMBER( write ); DECLARE_WRITE_LINE_MEMBER( ext_int_w ); DECLARE_READ_LINE_MEMBER( kbd_r ); UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); protected: // device-level overrides virtual void device_start(); virtual void device_reset(); virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); private: enum { TIMER_Y_ODD, TIMER_Y_EVEN, TIMER_HBLANK_ON, TIMER_HBLANK_OFF }; void initialize_palette(); int get_field_vpos(); int get_field(); void set_y_interrupt(); void do_partial_update(); devcb_write_line m_write_ext_int; devcb_write_line m_write_hblank; devcb_read8 m_read_db; rgb_t m_palette_val[32]; UINT8 m_ram[0x90]; UINT8 m_y_int; UINT8 m_fmod; UINT8 m_bg; UINT8 m_cmd; UINT8 m_freeze_x; UINT16 m_freeze_y; int m_field; // timers emu_timer *m_timer_y_odd; emu_timer *m_timer_y_even; emu_timer *m_timer_hblank_on; emu_timer *m_timer_hblank_off; }; // device type definition extern const device_type UV201; #endif