From 5b8e012b828a6e079cd4db5c226bd089145c0be1 Mon Sep 17 00:00:00 2001 From: Curt Coder Date: Sat, 9 Apr 2011 18:15:25 +0000 Subject: Imported CDP1861 VDC from MESS. (no whatsnew) --- src/emu/video/cdp1861.h | 180 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 180 insertions(+) create mode 100644 src/emu/video/cdp1861.h (limited to 'src/emu/video/cdp1861.h') diff --git a/src/emu/video/cdp1861.h b/src/emu/video/cdp1861.h new file mode 100644 index 00000000000..0bce7e8d497 --- /dev/null +++ b/src/emu/video/cdp1861.h @@ -0,0 +1,180 @@ +/********************************************************************** + + RCA CDP1861 Video Display Controller emulation + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +********************************************************************** + _____ _____ + _CLK 1 |* \_/ | 24 Vdd + _DMAO 2 | | 23 _CLEAR + _INT 3 | | 22 SC1 + TPA 4 | | 21 SC0 + TPB 5 | | 20 DI7 + _COMP SYNC 6 | CDP1861 | 19 DI6 + VIDEO 7 | | 18 DI5 + _RESET 8 | | 17 DI4 + _EFX 9 | | 16 DI3 + DISP ON 10 | | 15 DI2 + DISP OFF 11 | | 14 DI1 + Vss 12 |_____________| 13 DI0 + +**********************************************************************/ + +#pragma once + +#ifndef __CDP1861__ +#define __CDP1861__ + +#include "emu.h" + + + +//************************************************************************** +// MACROS / CONSTANTS +//************************************************************************** + +#define CDP1861_VISIBLE_COLUMNS 64 +#define CDP1861_VISIBLE_LINES 128 + +#define CDP1861_HBLANK_START 14 * 8 +#define CDP1861_HBLANK_END 12 +#define CDP1861_HSYNC_START 0 +#define CDP1861_HSYNC_END 12 +#define CDP1861_SCREEN_WIDTH 14 * 8 + +#define CDP1861_TOTAL_SCANLINES 262 + +#define CDP1861_SCANLINE_DISPLAY_START 80 +#define CDP1861_SCANLINE_DISPLAY_END 208 +#define CDP1861_SCANLINE_VBLANK_START 262 +#define CDP1861_SCANLINE_VBLANK_END 16 +#define CDP1861_SCANLINE_VSYNC_START 16 +#define CDP1861_SCANLINE_VSYNC_END 0 +#define CDP1861_SCANLINE_INT_START CDP1861_SCANLINE_DISPLAY_START - 2 +#define CDP1861_SCANLINE_INT_END CDP1861_SCANLINE_DISPLAY_START +#define CDP1861_SCANLINE_EFX_TOP_START CDP1861_SCANLINE_DISPLAY_START - 4 +#define CDP1861_SCANLINE_EFX_TOP_END CDP1861_SCANLINE_DISPLAY_START +#define CDP1861_SCANLINE_EFX_BOTTOM_START CDP1861_SCANLINE_DISPLAY_END - 4 +#define CDP1861_SCANLINE_EFX_BOTTOM_END CDP1861_SCANLINE_DISPLAY_END + + + +//************************************************************************** +// INTERFACE CONFIGURATION MACROS +//************************************************************************** + +#define MCFG_CDP1861_ADD(_tag, _clock, _config) \ + MCFG_DEVICE_ADD(_tag, CDP1861, _clock) \ + MCFG_DEVICE_CONFIG(_config) + + +#define MCFG_CDP1861_SCREEN_ADD(_tag, _clock) \ + MCFG_SCREEN_ADD(_tag, RASTER) \ + MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) \ + MCFG_SCREEN_RAW_PARAMS(_clock, CDP1861_SCREEN_WIDTH, CDP1861_HBLANK_END, CDP1861_HBLANK_START, CDP1861_TOTAL_SCANLINES, CDP1861_SCANLINE_VBLANK_END, CDP1861_SCANLINE_VBLANK_START) + + +#define CDP1861_INTERFACE(name) \ + const cdp1861_interface (name) = + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + + +// ======================> cdp1861_interface + +struct cdp1861_interface +{ + const char *m_cpu_tag; + const char *m_screen_tag; + + devcb_write_line m_out_int_func; + devcb_write_line m_out_dmao_func; + devcb_write_line m_out_efx_func; +}; + + + +// ======================> cdp1861_device_config + +class cdp1861_device_config : public device_config, + public cdp1861_interface +{ + friend class cdp1861_device; + + // construction/destruction + cdp1861_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock); + +public: + // allocators + static device_config *static_alloc_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock); + virtual device_t *alloc_device(running_machine &machine) const; + +protected: + // device_config overrides + virtual void device_config_complete(); +}; + + + +// ======================> cdp1861_device + +class cdp1861_device : public device_t +{ + friend class cdp1861_device_config; + + // construction/destruction + cdp1861_device(running_machine &_machine, const cdp1861_device_config &_config); + +public: + DECLARE_WRITE8_MEMBER( dma_w ); + DECLARE_WRITE_LINE_MEMBER( disp_on_w ); + DECLARE_WRITE_LINE_MEMBER( disp_off_w ); + + void update_screen(bitmap_t *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: + static const device_timer_id TIMER_INT = 0; + static const device_timer_id TIMER_EFX = 1; + static const device_timer_id TIMER_DMA = 2; + + devcb_resolved_write_line m_out_int_func; + devcb_resolved_write_line m_out_dmao_func; + devcb_resolved_write_line m_out_efx_func; + + screen_device *m_screen; // screen + bitmap_t *m_bitmap; // bitmap + + int m_disp; // display enabled + int m_dispon; // display on latch + int m_dispoff; // display off latch + int m_dmaout; // DMA request active + + // timers + emu_timer *m_int_timer; // interrupt timer + emu_timer *m_efx_timer; // EFx timer + emu_timer *m_dma_timer; // DMA timer + + cpu_device *m_cpu; + + const cdp1861_device_config &m_config; +}; + + +// device type definition +extern const device_type CDP1861; + + + +#endif -- cgit v1.2.3-70-g09d2