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Diffstat (limited to 'src/emu/bus/isa/aga.h')
-rw-r--r-- | src/emu/bus/isa/aga.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/emu/bus/isa/aga.h b/src/emu/bus/isa/aga.h new file mode 100644 index 00000000000..baeecb13f55 --- /dev/null +++ b/src/emu/bus/isa/aga.h @@ -0,0 +1,114 @@ +/* + pc cga/mda combi adapters + + one type hardware switchable between cga and mda/hercules + another type software switchable between cga and mda/hercules + + some support additional modes like + commodore pc10 320x200 in 16 colors + + + // aga + // 256 8x8 thick chars + // 256 8x8 thin chars + // 256 9x14 in 8x16 chars, line 3 is connected to a10 + ROM_LOAD("aga.chr", 0x00000, 0x02000, CRC(aca81498)) + // hercules font of above + ROM_LOAD("hercules.chr", 0x00000, 0x1000, CRC(7e8c9d76)) + +*/ +#ifndef __ISA_AGA_H__ +#define __ISA_AGA_H__ + +#include "emu.h" +#include "isa.h" +#include "cga.h" +#include "video/mc6845.h" + +enum AGA_MODE { AGA_OFF, AGA_COLOR, AGA_MONO }; + +// ======================> isa8_aga_device + +class isa8_aga_device : + public device_t, + public device_isa8_card_interface +{ +public: + // construction/destruction + isa8_aga_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + isa8_aga_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); + // device-level overrides + virtual void device_start(); + // optional information overrides + virtual machine_config_constructor device_mconfig_additions() const; + virtual const rom_entry *device_rom_region() const; + virtual ioport_constructor device_input_ports() const; + + DECLARE_WRITE_LINE_MEMBER( hsync_changed ); + DECLARE_WRITE_LINE_MEMBER( vsync_changed ); + + DECLARE_READ8_MEMBER( pc_aga_mda_r ); + DECLARE_WRITE8_MEMBER( pc_aga_mda_w ); + DECLARE_READ8_MEMBER( pc_aga_cga_r ); + DECLARE_WRITE8_MEMBER( pc_aga_cga_w ); + void set_palette_luts(void); + void pc_aga_set_mode(AGA_MODE mode); + DECLARE_WRITE8_MEMBER( pc_aga_videoram_w ); + DECLARE_READ8_MEMBER( pc_aga_videoram_r ); + + required_device<palette_device> m_palette; + required_device<mc6845_device> m_mc6845; + + required_ioport m_cga_config; + + mc6845_update_row_func m_update_row; + AGA_MODE m_mode; + UINT8 m_mda_mode_control; + UINT8 m_mda_status; + UINT8 *m_mda_chr_gen; + + UINT8 m_cga_mode_control; + UINT8 m_cga_color_select; + UINT8 m_cga_status; + UINT8 *m_cga_chr_gen; + + int m_framecnt; + UINT8 m_vsync; + UINT8 m_hsync; + + + UINT8 m_cga_palette_lut_2bpp[4]; + + UINT8 *m_videoram; +}; + +// device type definition +extern const device_type ISA8_AGA; + +// ======================> isa8_aga_pc200_device + +class isa8_aga_pc200_device : + public isa8_aga_device +{ +public: + // construction/destruction + isa8_aga_pc200_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + // device-level overrides + virtual void device_start(); + // optional information overrides + virtual const rom_entry *device_rom_region() const; + + UINT8 m_port8; + UINT8 m_portd; + UINT8 m_porte; + + DECLARE_READ8_MEMBER( pc200_videoram_r ); + DECLARE_WRITE8_MEMBER( pc200_videoram_w ); + DECLARE_WRITE8_MEMBER( pc200_cga_w ); + DECLARE_READ8_MEMBER( pc200_cga_r ); +}; + +// device type definition +extern const device_type ISA8_AGA_PC200; + +#endif |