// license:BSD-3-Clause // copyright-holders:Aaron Giles /********************************************************************** TI TMS9927 and compatible CRT controller emulation **********************************************************************/ #ifndef __TMS9927__ #define __TMS9927__ #define MCFG_TMS9927_VSYN_CALLBACK(_write) \ devcb = &tms9927_device::set_vsyn_wr_callback(*device, DEVCB_##_write); #define MCFG_TMS9927_CHAR_WIDTH(_pixels) \ tms9927_device::set_char_width(*device, _pixels); #define MCFG_TMS9927_REGION(_tag) \ tms9927_device::set_region_tag(*device, _tag); class tms9927_device : public device_t, public device_video_interface { public: tms9927_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); tms9927_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source); ~tms9927_device() {} template static devcb_base &set_vsyn_wr_callback(device_t &device, _Object object) { return downcast(device).m_write_vsyn.set_callback(object); } static void set_char_width(device_t &device, int pixels) { downcast(device).m_hpixels_per_column = pixels; } static void set_region_tag(device_t &device, const char *tag) { downcast(device).m_selfload_region = tag; } DECLARE_WRITE8_MEMBER(write); DECLARE_READ8_MEMBER(read); int screen_reset(); int upscroll_offset(); int cursor_bounds(rectangle &bounds); protected: // device-level overrides virtual void device_start(); virtual void device_stop(); virtual void device_reset(); virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); private: enum { TIMER_VSYNC }; void state_postload(); void recompute_parameters(int postload); void generic_access(address_space &space, offs_t offset); devcb_write_line m_write_vsyn; int m_hpixels_per_column; /* number of pixels per video memory address */ const char *m_selfload_region; /* name of the region with self-load data */ // internal state const UINT8 *m_selfload; /* live state */ UINT32 m_clock; UINT8 m_reg[9]; UINT8 m_start_datarow; UINT8 m_reset; /* derived state; no need to save */ UINT8 m_valid_config; UINT16 m_total_hpix, m_total_vpix; UINT16 m_visible_hpix, m_visible_vpix; int m_vsyn; emu_timer *m_vsync_timer; }; extern const device_type TMS9927; class crt5027_device : public tms9927_device { public: crt5027_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); }; extern const device_type CRT5027; class crt5037_device : public tms9927_device { public: crt5037_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); }; extern const device_type CRT5037; class crt5057_device : public tms9927_device { public: crt5057_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); }; extern const device_type CRT5057; #endif