// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic, Robbbert
/***************************************************************************
EC-65 (also known as Octopus)
2009-07-16 Initial driver.
****************************************************************************/
#include "emu.h"
#include "cpu/m6502/m6502.h"
#include "cpu/g65816/g65816.h"
#include "video/mc6845.h"
#include "machine/6821pia.h"
#include "machine/6522via.h"
#include "machine/mos6551.h"
#include "machine/6850acia.h"
#include "machine/keyboard.h"
#include "screen.h"
#define PIA6821_TAG "pia6821"
#define ACIA6850_TAG "acia6850"
#define ACIA6551_TAG "acia6551"
#define VIA6522_0_TAG "via6522_0"
#define VIA6522_1_TAG "via6522_1"
#define MC6845_TAG "mc6845"
#define KEYBOARD_TAG "keyboard"
class ec65_state : public driver_device
{
public:
ec65_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_via_0(*this, VIA6522_0_TAG)
, m_via_1(*this, VIA6522_1_TAG)
, m_p_videoram(*this, "videoram")
, m_p_chargen(*this, "chargen")
, m_maincpu(*this, "maincpu")
, m_palette(*this, "palette")
{
}
void kbd_put(u8 data);
MC6845_UPDATE_ROW(crtc_update_row);
void ec65(machine_config &config);
void ec65_mem(address_map &map);
private:
virtual void machine_reset() override;
required_device<via6522_device> m_via_0;
required_device<via6522_device> m_via_1;
required_shared_ptr<uint8_t> m_p_videoram;
required_region_ptr<u8> m_p_chargen;
required_device<cpu_device> m_maincpu;
required_device<palette_device> m_palette;
};
class ec65k_state : public driver_device
{
public:
ec65k_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
{
}
void ec65k(machine_config &config);
void ec65k_mem(address_map &map);
};
void ec65_state::ec65_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0xdfff).ram();
map(0xe000, 0xe003).rw(PIA6821_TAG, FUNC(pia6821_device::read), FUNC(pia6821_device::write));
map(0xe010, 0xe011).rw(ACIA6850_TAG, FUNC(acia6850_device::read), FUNC(acia6850_device::write));
map(0xe100, 0xe10f).rw(m_via_0, FUNC(via6522_device::read), FUNC(via6522_device::write));
map(0xe110, 0xe11f).rw(m_via_1, FUNC(via6522_device::read), FUNC(via6522_device::write));
map(0xe130, 0xe133).rw(ACIA6551_TAG, FUNC(mos6551_device::read), FUNC(mos6551_device::write));
map(0xe140, 0xe140).w(MC6845_TAG, FUNC(mc6845_device::address_w));
map(0xe141, 0xe141).rw(MC6845_TAG, FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w));
map(0xe400, 0xe7ff).ram(); // 1KB on-board RAM
map(0xe800, 0xefff).ram().share("videoram");
map(0xf000, 0xffff).rom();
}
void ec65k_state::ec65k_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0xe7ff).ram();
map(0xe800, 0xefff).ram().share("videoram");
map(0xf000, 0xffff).rom();
}
/* Input ports */
static INPUT_PORTS_START( ec65 )
INPUT_PORTS_END
void ec65_state::kbd_put(u8 data)
{
if (data)
{
m_via_0->write_pa0(BIT(data, 0));
m_via_0->write_pa1(BIT(data, 1));
m_via_0->write_pa2(BIT(data, 2));
m_via_0->write_pa3(BIT(data, 3));
m_via_0->write_pa4(BIT(data, 4));
m_via_0->write_pa5(BIT(data, 5));
m_via_0->write_pa6(BIT(data, 6));
m_via_0->write_pa7(BIT(data, 7));
m_via_0->write_ca1(1);
m_via_0->write_ca1(0);
}
}
void ec65_state::machine_reset()
{
m_via_1->write_pb0(1);
m_via_1->write_pb1(1);
m_via_1->write_pb2(1);
m_via_1->write_pb3(1);
m_via_1->write_pb4(1);
m_via_1->write_pb5(1);
m_via_1->write_pb6(1);
m_via_1->write_pb7(1);
}
MC6845_UPDATE_ROW( ec65_state::crtc_update_row )
{
const rgb_t *palette = m_palette->palette()->entry_list_raw();
uint8_t chr,gfx,inv;
uint16_t mem,x;
uint32_t *p = &bitmap.pix32(y);
for (x = 0; x < x_count; x++)
{
inv = (x == cursor_x) ? 0xff : 0;
mem = (ma + x) & 0x7ff;
chr = m_p_videoram[mem];
/* get pattern of pixels for that character scanline */
gfx = m_p_chargen[(chr<<4) | (ra & 0x0f)] ^ inv;
/* Display a scanline of a character */
*p++ = palette[BIT(gfx, 7)];
*p++ = palette[BIT(gfx, 6)];
*p++ = palette[BIT(gfx, 5)];
*p++ = palette[BIT(gfx, 4)];
*p++ = palette[BIT(gfx, 3)];
*p++ = palette[BIT(gfx, 2)];
*p++ = palette[BIT(gfx, 1)];
*p++ = palette[BIT(gfx, 0)];
}
}
/* F4 Character Displayer */
static const gfx_layout ec65_charlayout =
{
8, 8, /* 8 x 8 characters */
256, /* 256 characters */
1, /* 1 bits per pixel */
{ 0 }, /* no bitplanes */
/* x offsets */
{ 0, 1, 2, 3, 4, 5, 6, 7 },
/* y offsets */
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
8*16 /* every char takes 16 bytes */
};
static GFXDECODE_START( gfx_ec65 )
GFXDECODE_ENTRY( "chargen", 0x0000, ec65_charlayout, 0, 1 )
GFXDECODE_END
MACHINE_CONFIG_START(ec65_state::ec65)
/* basic machine hardware */
MCFG_DEVICE_ADD("maincpu",M6502, XTAL(4'000'000) / 4)
MCFG_DEVICE_PROGRAM_MAP(ec65_mem)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_SIZE(640, 200)
MCFG_SCREEN_VISIBLE_AREA(0, 640 - 1, 0, 200 - 1)
MCFG_SCREEN_UPDATE_DEVICE(MC6845_TAG, mc6845_device, screen_update)
MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_ec65)
MCFG_PALETTE_ADD_MONOCHROME("palette")
MCFG_MC6845_ADD(MC6845_TAG, MC6845, "screen", XTAL(16'000'000) / 8)
MCFG_MC6845_SHOW_BORDER_AREA(false)
MCFG_MC6845_CHAR_WIDTH(8) /*?*/
MCFG_MC6845_UPDATE_ROW_CB(ec65_state, crtc_update_row)
/* devices */
MCFG_DEVICE_ADD(PIA6821_TAG, PIA6821, 0)
MCFG_DEVICE_ADD(ACIA6850_TAG, ACIA6850, 0)
MCFG_DEVICE_ADD(VIA6522_0_TAG, VIA6522, XTAL(4'000'000) / 4)
MCFG_DEVICE_ADD(VIA6522_1_TAG, VIA6522, XTAL(4'000'000) / 4)
MCFG_DEVICE_ADD(ACIA6551_TAG, MOS6551, 0)
MCFG_MOS6551_XTAL(XTAL(1'843'200))
MCFG_DEVICE_ADD(KEYBOARD_TAG, GENERIC_KEYBOARD, 0)
MCFG_GENERIC_KEYBOARD_CB(PUT(ec65_state, kbd_put))
MACHINE_CONFIG_END
MACHINE_CONFIG_START(ec65k_state::ec65k)
/* basic machine hardware */
MCFG_DEVICE_ADD("maincpu",G65816, XTAL(4'000'000)) // can use 4,2 or 1 MHz
MCFG_DEVICE_PROGRAM_MAP(ec65k_mem)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_SIZE(640, 200)
MCFG_SCREEN_VISIBLE_AREA(0, 640 - 1, 0, 200 - 1)
MCFG_SCREEN_UPDATE_DEVICE(MC6845_TAG, mc6845_device, screen_update)
MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_ec65)
MCFG_PALETTE_ADD_MONOCHROME("palette")
MCFG_MC6845_ADD(MC6845_TAG, MC6845, "screen", XTAL(16'000'000) / 8)
MCFG_MC6845_SHOW_BORDER_AREA(false)
MCFG_MC6845_CHAR_WIDTH(8) /*?*/
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( ec65 )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "ec65.ic6", 0xf000, 0x1000, CRC(acd928ed) SHA1(e02a688a057ff77294717cf7b887425fed0b1153))
ROM_REGION( 0x1000, "chargen", 0 )
ROM_LOAD( "chargen.ic19", 0x0000, 0x1000, CRC(9b56a28d) SHA1(41c04fd9fb542c50287bc0e366358a61fc4b0cd4)) // Located on VDU card
ROM_END
ROM_START( ec65k )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "ec65k.ic19", 0xf000, 0x1000, CRC(5e5a890a) SHA1(daa006f2179fd156833e11c73b37881cafe5dede))
ROM_REGION( 0x1000, "chargen", 0 )
ROM_LOAD( "chargen.ic19", 0x0000, 0x1000, CRC(9b56a28d) SHA1(41c04fd9fb542c50287bc0e366358a61fc4b0cd4)) // Located on VDU card, suspect bad dump
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
COMP( 1985, ec65, 0, 0, ec65, ec65, ec65_state, empty_init, "Elektor Electronics", "EC-65", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW)
COMP( 1985, ec65k, ec65, 0, ec65k, ec65, ec65k_state, empty_init, "Elektor Electronics", "EC-65K", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW)