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-rw-r--r--src/mess/machine/a2videoterm.h108
1 files changed, 108 insertions, 0 deletions
diff --git a/src/mess/machine/a2videoterm.h b/src/mess/machine/a2videoterm.h
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+++ b/src/mess/machine/a2videoterm.h
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+/*********************************************************************
+
+ a2videoterm.h
+
+ Implementation of the Apple II Memory Expansion Card
+
+*********************************************************************/
+
+#ifndef __A2BUS_VIDEOTERM__
+#define __A2BUS_VIDEOTERM__
+
+#include "emu.h"
+#include "machine/a2bus.h"
+#include "video/mc6845.h"
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+class a2bus_videx80_device:
+ public device_t,
+ public device_a2bus_card_interface
+{
+public:
+ // construction/destruction
+ a2bus_videx80_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual machine_config_constructor device_mconfig_additions() const;
+
+ DECLARE_WRITE_LINE_MEMBER(vsync_changed);
+
+ UINT8 *m_rom, *m_chrrom;
+ UINT8 m_ram[512*4];
+ int m_framecnt;
+
+protected:
+ virtual void device_start();
+ virtual void device_reset();
+
+ // overrides of standard a2bus slot functions
+ virtual UINT8 read_c0nx(address_space &space, UINT8 offset);
+ virtual void write_c0nx(address_space &space, UINT8 offset, UINT8 data);
+ virtual UINT8 read_cnxx(address_space &space, UINT8 offset);
+ virtual void write_cnxx(address_space &space, UINT8 offset, UINT8 data);
+ virtual UINT8 read_c800(address_space &space, UINT16 offset);
+ virtual void write_c800(address_space &space, UINT16 offset, UINT8 data);
+
+ required_device<mc6845_device> m_crtc;
+
+private:
+ int m_rambank;
+};
+
+class a2bus_videoterm_device : public a2bus_videx80_device
+{
+public:
+ a2bus_videoterm_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ virtual const rom_entry *device_rom_region() const;
+};
+
+class a2bus_ap16_device : public a2bus_videx80_device
+{
+public:
+ a2bus_ap16_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ virtual const rom_entry *device_rom_region() const;
+
+ virtual UINT8 read_cnxx(address_space &space, UINT8 offset);
+};
+
+
+class a2bus_ap16alt_device : public a2bus_videx80_device
+{
+public:
+ a2bus_ap16alt_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ virtual const rom_entry *device_rom_region() const;
+
+ virtual UINT8 read_cnxx(address_space &space, UINT8 offset);
+};
+
+class a2bus_vtc1_device : public a2bus_videx80_device
+{
+public:
+ a2bus_vtc1_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ virtual const rom_entry *device_rom_region() const;
+};
+
+class a2bus_vtc2_device : public a2bus_videx80_device
+{
+public:
+ a2bus_vtc2_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ virtual const rom_entry *device_rom_region() const;
+};
+
+// device type definition
+extern const device_type A2BUS_VIDEOTERM;
+extern const device_type A2BUS_IBSAP16;
+extern const device_type A2BUS_IBSAP16ALT;
+extern const device_type A2BUS_VTC1;
+extern const device_type A2BUS_VTC2;
+
+#endif /* __A2BUS_VIDEOTERM__ */
+