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Diffstat (limited to 'trunk/src/emu/video/crt9212.h')
-rw-r--r-- | trunk/src/emu/video/crt9212.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/trunk/src/emu/video/crt9212.h b/trunk/src/emu/video/crt9212.h new file mode 100644 index 00000000000..f9b0e3a535e --- /dev/null +++ b/trunk/src/emu/video/crt9212.h @@ -0,0 +1,124 @@ +/********************************************************************** + + SMC CRT9212 Double Row Buffer (DRB) emulation + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +********************************************************************** + _____ _____ + DIN2 1 |* \_/ | 28 DIN3 + DIN1 2 | | 27 _WCLK + DIN0 3 | | 26 _OE + DOUT7 4 | | 25 WEN2 + DOUT6 5 | | 24 WEN1 + DOUT5 6 | | 23 GND + DOUT4 7 | CRT9212 | 22 ROF + Vcc 8 | | 21 WOF + DOUT3 9 | | 20 REN + DOUT2 10 | | 19 _CLRCNT + DOUT1 11 | | 18 _TOG + DOUT0 12 | | 17 _RCLK + DIN7 13 | | 16 DIN4 + DIN6 14 |_____________| 15 DIN5 + +**********************************************************************/ + +#pragma once + +#ifndef __CRT9212__ +#define __CRT9212__ + +#include "emu.h" + + + +//************************************************************************** +// MACROS / CONSTANTS +//************************************************************************** + +const int CRT9212_RAM_SIZE = 135; + + + +//************************************************************************** +// INTERFACE CONFIGURATION MACROS +//************************************************************************** + +#define MCFG_CRT9212_ADD(_tag, _config) \ + MCFG_DEVICE_ADD(_tag, CRT9212, 0) \ + MCFG_DEVICE_CONFIG(_config) + + +#define CRT9212_INTERFACE(name) \ + const crt9212_interface (name) = + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + + +// ======================> crt9212_interface + +struct crt9212_interface +{ + devcb_write_line m_out_rof_cb; + devcb_write_line m_out_wof_cb; + devcb_read_line m_in_ren_cb; + devcb_read_line m_in_wen_cb; + devcb_read_line m_in_wen2_cb; +}; + + + +// ======================> crt9212_device + +class crt9212_device : public device_t, + public crt9212_interface +{ +public: + // construction/destruction + crt9212_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + DECLARE_READ8_MEMBER( read ); + DECLARE_WRITE8_MEMBER( write ); + DECLARE_WRITE_LINE_MEMBER( clrcnt_w ); + DECLARE_WRITE_LINE_MEMBER( tog_w ); + DECLARE_WRITE_LINE_MEMBER( rclk_w ); + DECLARE_WRITE_LINE_MEMBER( wclk_w ); + +protected: + // device-level overrides + virtual void device_config_complete(); + virtual void device_start(); + +private: + devcb_resolved_write_line m_out_rof_func; + devcb_resolved_write_line m_out_wof_func; + devcb_resolved_read_line m_in_ren_func; + devcb_resolved_read_line m_in_wen_func; + devcb_resolved_read_line m_in_wen2_func; + + UINT8 m_ram[CRT9212_RAM_SIZE][2]; + + UINT8 m_input; + UINT8 m_output; + + int m_buffer; + int m_rac; + int m_wac; + int m_tog; + int m_clrcnt; + int m_rclk; + int m_wclk; +}; + + +// device type definition +extern const device_type CRT9212; + + + +#endif |