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// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic
/***************************************************************************

    Apollo 7 Squale

    PCB Ref Qty Manufacturer Ref    Description / Datasheet
    ============================================================================================
    U1              1   EF6809P             8-BIT MICROPROCESSOR UNIT (MPU)
    U2              1   27C32 / 27C64       EPROM
    U72,U75         1   EF6821P             PERIPHERAL INTERFACE ADAPTER (PIA)
    U69             1   EF6850              ASYNCHRONOUS COMMUNICATIONS INTERFACE ADAPTER (ACIA)
    U59             1   EF9365P             GRAPHIC DISPLAY PROCESSOR (GDP)
    U65             1   AY-3-8910A          PROGRAMMABLE SOUND GENERATOR
    U16,U17,U18,U19,
    U20,U21,U22,U23 8   MK4564              65,536 x 1-BIT DYNAMIC RAM
    U38,U39,U40,U41,
    U42,U43,U44,U45,
    U46,U47,U48,U49,
    U50,U51,U52,U53 16  TMS4116             16,384-BIT DYNAMIC RAM
    U68             1   EFB7510             SINGLE CHIP ASYNCHRONOUS FSK MODEM


    Memory map
    ==========

    Periphiriques                               Adresses
    =========================================================
    EPROM                                       0xF100-0xFFFF
    Extension Port                              0xF080-0xF0FF
    FREE                                        0xF070-0xF07F
    AY-3-8910A                                  0xF060-0xF06F
    ACIA EF6850 (Modem + K7)                    0xF050-0xF05F
    Restricted area                             0xF04C-0xF04F
    PIO EF6821 (Printer + Cartridge)            0xF048-0xF04B
    PIO EF6821 (Keyboard)                       0xF044-0xF047
    FREE                                        0xF040-0xF043
    VID_RD2                                     0xF030-0xF03F
    VID_RD1                                     0xF020-0xF02F
    REG1                                        0xF010-0xF01F
    Video Controller EF9365                     0xF000-0xF00F
    System RAM                                  0x0000-0xEFFF


    Notes:
    1) For 8KB versions of the monitor, the bank switching is done via bit 7 of REG1.
    2) VID_RD1 : [7..0] = I0,R0,G0,B0,I1,R1,G1,B1 (I=Intensity,R=Red,G=Green,B=Blue)
    3) VID_RD2 : [7..0] = I2,R2,G2,B2,I3,R3,G3,B3 (I=Intensity,R=Red,G=Green,B=Blue)
    3) REG1 : [7..0] = EPROM Bank,-,Modem,K7,I,R,G,B (I=Intensity,R=Red,V=Green,B=Blue)
****************************************************************************/

#include "emu.h"
#include "cpu/m6809/m6809.h"

class squale_state : public driver_device
{
public:
	squale_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
		, m_maincpu(*this, "maincpu")
	{ }

private:
	required_device<cpu_device> m_maincpu;
};


static ADDRESS_MAP_START(squale_mem, AS_PROGRAM, 8, squale_state)
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x0000,0xefff) AM_RAM
	AM_RANGE(0xf100,0xffff) AM_ROM AM_REGION("maincpu", 0x100)
ADDRESS_MAP_END

static ADDRESS_MAP_START( squale_io, AS_IO, 8, squale_state)
	ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_END

/* Input ports */
static INPUT_PORTS_START( squale )
INPUT_PORTS_END


static MACHINE_CONFIG_START( squale, squale_state )
	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu",M6809, XTAL_1MHz)
	MCFG_CPU_PROGRAM_MAP(squale_mem)
	MCFG_CPU_IO_MAP(squale_io)
MACHINE_CONFIG_END

/* ROM definition */
ROM_START( squale )
	ROM_REGION( 0x2000, "maincpu", 0 )
	ROM_LOAD( "sqm2r1.bin", 0x0000, 0x2000, CRC(ed57c707) SHA1(c8bd33a6fb07fe7f881f2605ad867b7e82366bfc) )
ROM_END

/* Driver */

/*    YEAR   NAME   PARENT  COMPAT   MACHINE    INPUT  CLASS           INIT    COMPANY   FULLNAME       FLAGS */
COMP( 1984, squale, 0,      0,       squale,    squale,driver_device,   0,     "Apollo 7", "Squale",    MACHINE_IS_SKELETON )