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// license:BSD-3-Clause
// copyright-holders:Angelo Salese
/***************************************************************************
Atari Jaguar "Blitter" device
***************************************************************************/
#ifndef MAME_MACHINE_JAG_BLITTER_H
#define MAME_MACHINE_JAG_BLITTER_H
#pragma once
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> jag_blitter_device
class jag_blitter_device : public device_t,
public device_memory_interface
{
public:
// construction/destruction
jag_blitter_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// TODO: add which device triggered the I/O
void iobus_w(offs_t offset, u32 data, u32 mem_mask = ~0);
u32 iobus_r(offs_t offset, u32 mem_mask = ~0);
protected:
// device-level overrides
//virtual void device_validity_check(validity_checker &valid) const override;
virtual void device_start() override;
virtual void device_reset() override;
void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
virtual space_config_vector memory_space_config() const override;
const address_space_config m_space_config;
// address_space *m_host_space;
private:
void regs_map(address_map &map);
void a1_base_w(offs_t offset, u32 data, u32 mem_mask = ~0);
void a1_xstep_w(offs_t offset, u16 data, u16 mem_mask = ~0);
void a1_ystep_w(offs_t offset, u16 data, u16 mem_mask = ~0);
u32 status_r();
void command_w(offs_t offset, u32 data, u32 mem_mask = ~0);
void count_outer_w(offs_t offset, u16 data, u16 mem_mask = ~0);
void count_inner_w(offs_t offset, u16 data, u16 mem_mask = ~0);
// timer setups
emu_timer *m_command_timer;
inline void command_start();
inline void command_run();
inline void command_done();
// functional switches
typedef void (jag_blitter_device::*op_func)(void);
static const op_func upda_ops[8];
void op_nop();
void op_unemulated();
void op_upda1();
u32 m_command_latch;
bool m_status_idle;
u32 m_count_lines, m_count_pixels;
struct {
u32 base;
s16 xstep, ystep;
u32 ptr; /**< Current pixel address */
} m_a1;
};
// device type definition
DECLARE_DEVICE_TYPE(JAG_BLITTER, jag_blitter_device)
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
#endif // MAME_MACHINE_JAG_BLITTER_H
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