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// license:BSD-3-Clause
// copyright-holders:Patrick Mackinlay
#ifndef MAME_BUS_INTERPRO_SR_GT_H
#define MAME_BUS_INTERPRO_SR_GT_H
#pragma once
#include "sr.h"
#include "video/bt459.h"
class gt_device_base : public sr_card_device_base
{
protected:
gt_device_base(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
public:
static const u32 GT_PIXCLOCK = 80'000'000; // just a guess
static const int GT_XPIXELS = 1184;
static const int GT_YPIXELS = 884;
static const int GT_BUFFER_SIZE = 0x100000; // 1 megabyte
static const int GT_VRAM_SIZE = 0x200000; // 1 megabyte double buffered
enum control_mask
{
CONTROL_SCREEN = 0x1000, // possibly selects screen 0 or 1?
CONTROL_BUSY = 0x8000
};
protected:
typedef struct
{
required_device<bt459_device> ramdac;
std::unique_ptr<u8[]> vram;
bool primary;
} gt_screen_t;
virtual DECLARE_READ16_MEMBER(control_r) = 0;
virtual DECLARE_WRITE16_MEMBER(control_w) = 0;
virtual DECLARE_READ32_MEMBER(vram_r) = 0;
virtual DECLARE_WRITE32_MEMBER(vram_w) = 0;
};
class mpcb963_device : public gt_device_base
{
public:
mpcb963_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
static const int GT_SCREEN_COUNT = 1;
protected:
virtual const tiny_rom_entry *device_rom_region() const override;
virtual void device_add_mconfig(machine_config &config) override;
virtual void device_start() override;
virtual void map(address_map &map) override;
virtual DECLARE_READ16_MEMBER(control_r) override { return m_control; }
virtual DECLARE_WRITE16_MEMBER(control_w) override;
virtual DECLARE_READ32_MEMBER(vram_r) override;
virtual DECLARE_WRITE32_MEMBER(vram_w) override;
u32 screen_update0(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
private:
u16 m_control;
gt_screen_t m_screen[GT_SCREEN_COUNT];
};
class mpcba79_device : public gt_device_base
{
public:
mpcba79_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
static const int GT_SCREEN_COUNT = 2;
protected:
virtual const tiny_rom_entry *device_rom_region() const override;
virtual void device_add_mconfig(machine_config &config) override;
virtual void device_start() override;
u32 screen_update0(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
u32 screen_update1(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
virtual void map(address_map &map) override;
virtual DECLARE_READ16_MEMBER(control_r) override { return m_control; }
virtual DECLARE_WRITE16_MEMBER(control_w) override;
virtual DECLARE_READ32_MEMBER(vram_r) override;
virtual DECLARE_WRITE32_MEMBER(vram_w) override;
private:
u16 m_control;
gt_screen_t m_screen[GT_SCREEN_COUNT];
};
// device type definition
DECLARE_DEVICE_TYPE(MPCB963, mpcb963_device)
DECLARE_DEVICE_TYPE(MPCBA79, mpcba79_device)
#endif // MAME_BUS_INTERPRO_SR_GT_H
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