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vg5k.cpp
479 lines (395 loc) · 22.3 KB
/
vg5k.cpp
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// license:BSD-3-Clause
// copyright-holders:Sandro Ronco
/***************************************************************************
Philips VG-5000mu
Driver by Sandro Ronco with help from Daniel Coulom
05/2010 (Sandro Ronco)
- EF9345 video controller
- keyboard input ports
05/2009 Skeleton driver.
Known issues:
- Support the K7 filetype for ease of usage, but as read only.
Information ( see the very informative http://vg5k.free.fr/ ):
- Variants: Radiola VG5000 and Schneider VG5000
- CPU: Zilog Z80 running at 4MHz
- ROM: 18KB (16 KB BASIC + 2 KB charset )
- RAM: 24 KB
- Video: SGS Thomson EF9345 processor
- Text mode: 25 rows x 40 columns
- Character matrix: 8 x 10
- ASCII characters set, 128 graphics mode characters, 192 user characters.
- Graphics mode: not available within basic, only semi graphic is available.
- Colors: 8
- Sound: Synthesizer, 4 Octaves
- Keyboard: 63 keys AZERTY, Caps Lock, CTRL key to access 33 BASIC instructions
- I/O: Tape recorder connector (1200/2400 bauds), SCART connector to TV (RGB),
External PSU (VU0022) connector, Bus connector (2x25 pins)
- There are 2 versions of the VG5000 ROM, one with Basic v1.0,
contained in two 8 KB ROMs, and one with Basic 1.1, contained in
a single 16 KB ROM.
- RAM: 24 KB (3 x 8 KB) type SRAM D4168C, more precisely:
2 x 8 KB, used by the system
1 x 8 KB, used by the video processor
- Memory Map:
$0000 - $3fff BASIC + monitor
$4000 - $47cf Screen
$47d0 - $7fff reserved area for BASIC, variables, etc
$8000 - $bfff Memory Expansion 16K or ROM cart
$c000 - $ffff Memory Expansion 32K or ROM cart
- This computer was NOT MSX-compatible!
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "imagedev/cassette.h"
#include "imagedev/printer.h"
#include "machine/ram.h"
#include "machine/timer.h"
#include "sound/dac.h"
#include "video/ef9345.h"
#include "screen.h"
#include "softlist_dev.h"
#include "speaker.h"
#include "formats/vg5k_cas.h"
namespace {
class vg5k_state : public driver_device
{
public:
vg5k_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_ef9345(*this, "ef9345")
, m_dac(*this, "dac")
, m_printer(*this, "printer")
, m_cassette(*this, "cassette")
, m_ram(*this, RAM_TAG)
{ }
void vg5k(machine_config &config);
void init_vg5k();
DECLARE_INPUT_CHANGED_MEMBER(delta_button);
private:
required_device<z80_device> m_maincpu;
required_device<ef9345_device> m_ef9345;
required_device<dac_bit_interface> m_dac;
required_device<printer_image_device> m_printer;
required_device<cassette_image_device> m_cassette;
required_device<ram_device> m_ram;
offs_t m_ef9345_offset = 0;
uint8_t m_printer_latch = 0;
uint8_t m_printer_signal = 0;
emu_timer *m_z80_irq_clear_timer = nullptr;
virtual void machine_start() override;
virtual void machine_reset() override;
void z80_m1_w(uint8_t data);
uint8_t printer_state_r();
void printer_state_w(uint8_t data);
void printer_data_w(uint8_t data);
void ef9345_offset_w(uint8_t data);
uint8_t ef9345_io_r();
void ef9345_io_w(uint8_t data);
uint8_t cassette_r();
void cassette_w(uint8_t data);
TIMER_CALLBACK_MEMBER(z80_irq_clear);
TIMER_DEVICE_CALLBACK_MEMBER(z80_irq);
TIMER_DEVICE_CALLBACK_MEMBER(vg5k_scanline);
void vg5k_io(address_map &map);
void vg5k_mem(address_map &map);
};
void vg5k_state::z80_m1_w(uint8_t data)
{
// Leverage the refresh callback of the Z80 emulator to pretend
// the second T state of the M1 cycle didn't happen.
// This simulates the WAIT line asserted at that moment, as
// the current implementation of the Z80 doesn't handle the WAIT
// line at that moment.
m_maincpu->adjust_icount(-1);
}
uint8_t vg5k_state::printer_state_r()
{
return (m_printer->is_ready() ? 0x00 : 0xff);
}
void vg5k_state::printer_state_w(uint8_t data)
{
// Character is emitted on a rising edge.
if (!BIT(m_printer_signal, 0) && BIT(data, 0)) {
m_printer->output(m_printer_latch);
}
m_printer_signal = data;
}
void vg5k_state::printer_data_w(uint8_t data)
{
m_printer_latch = data;
}
void vg5k_state::ef9345_offset_w(uint8_t data)
{
m_ef9345_offset = data;
}
uint8_t vg5k_state::ef9345_io_r()
{
return m_ef9345->data_r(m_ef9345_offset);
}
void vg5k_state::ef9345_io_w(uint8_t data)
{
m_ef9345->data_w(m_ef9345_offset, data);
}
uint8_t vg5k_state::cassette_r()
{
double level = m_cassette->input();
return (level > 0.03) ? 0xff : 0x00;
}
void vg5k_state::cassette_w(uint8_t data)
{
m_dac->write(BIT(data, 3));
m_cassette->change_state(BIT(data, 1) ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED , CASSETTE_MASK_MOTOR);
if (BIT(data, 1)) {
if (BIT(data, 0)) {
m_cassette->output(+1);
} else {
m_cassette->output(-1);
}
} else {
m_cassette->output(0);
}
}
void vg5k_state::vg5k_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x3fff).rom();
map(0x4000, 0x7fff).ram();
map(0x8000, 0xffff).noprw(); /* messram expansion memory */
}
void vg5k_state::vg5k_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0xff);
/* joystick */
map(0x07, 0x07).portr("JOY0");
map(0x08, 0x08).portr("JOY1");
/* printer */
map(0x10, 0x10).rw(FUNC(vg5k_state::printer_state_r), FUNC(vg5k_state::printer_state_w));
map(0x11, 0x11).w(FUNC(vg5k_state::printer_data_w));
/* keyboard */
map(0x80, 0x80).portr("ROW1");
map(0x81, 0x81).portr("ROW2");
map(0x82, 0x82).portr("ROW3");
map(0x83, 0x83).portr("ROW4");
map(0x84, 0x84).portr("ROW5");
map(0x85, 0x85).portr("ROW6");
map(0x86, 0x86).portr("ROW7");
map(0x87, 0x87).portr("ROW8");
/* EF9345 */
map(0x8f, 0x8f).w(FUNC(vg5k_state::ef9345_offset_w));
map(0xcf, 0xcf).rw(FUNC(vg5k_state::ef9345_io_r), FUNC(vg5k_state::ef9345_io_w));
/* cassette */
map(0xaf, 0xaf).rw(FUNC(vg5k_state::cassette_r), FUNC(vg5k_state::cassette_w));
}
/* Input ports */
static INPUT_PORTS_START( vg5k )
PORT_START("ROW1")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_HOME) PORT_NAME("LIST EFFE") PORT_CHAR(UCHAR_MAMEKEY(F1))
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_NAME("MAJ") PORT_CHAR(UCHAR_SHIFT_1)
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_NAME("CTRL ACCENT") PORT_CHAR(UCHAR_SHIFT_2)
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_INSERT) PORT_NAME("INSC INSL") PORT_CHAR(UCHAR_MAMEKEY(INSERT))
PORT_START("ROW2")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F2) PORT_NAME("RUN STOP") PORT_CHAR(UCHAR_MAMEKEY(F2)) PORT_CHAR(UCHAR_MAMEKEY(PAUSE))
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('q') PORT_CHAR('Q')
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_NAME("ESPACE") PORT_CHAR(' ')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CAPSLOCK) PORT_NAME("LCK") PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK))
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ENTER) PORT_NAME("RET") PORT_CHAR(13)
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('a') PORT_CHAR('A')
PORT_START("ROW3")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('w') PORT_CHAR('W')
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('#') PORT_CHAR(0xe2) // â
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR(':') PORT_CHAR('*')
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('z') PORT_CHAR('Z')
PORT_START("ROW4")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('"') PORT_CHAR(0xea) // ê
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR(0xa3) PORT_CHAR(0xef) // £ ï
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('$') PORT_CHAR(0xf9) // ù
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('%') PORT_CHAR(0xf4) // ô
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('!') PORT_CHAR(0xe9) // é
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR(';') PORT_CHAR('@')
PORT_START("ROW5")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TAB) PORT_CHAR(0xf7) PORT_CHAR('_') // ÷
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR(0xd7) PORT_CHAR('|') // ×
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
PORT_START("ROW6")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')') PORT_CHAR(0xe0) // à
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(']') PORT_CHAR('[')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR(0x2026) PORT_CHAR(0x3c0) // … π
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(',') PORT_CHAR('/')
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&') PORT_CHAR(0xe8) // è
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('\'') PORT_CHAR(0xfb) // û
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(') PORT_CHAR(0xe7) // ç
PORT_START("ROW7")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('-') PORT_CHAR('?')
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('+') PORT_CHAR('.')
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('<') PORT_CHAR('>')
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_NAME("PRT") PORT_CHAR(UCHAR_MAMEKEY(PRTSCR))
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
PORT_START("ROW8")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('^')
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSPACE) PORT_NAME("EFFC EFFL") PORT_CHAR(8) PORT_CHAR(UCHAR_MAMEKEY(DEL))
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR('m') PORT_CHAR('M')
PORT_START("JOY0")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1)
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("JOY1")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("direct")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_END) PORT_NAME("DELTA") PORT_CHANGED_MEMBER(DEVICE_SELF, vg5k_state, delta_button, 0)
INPUT_PORTS_END
TIMER_CALLBACK_MEMBER(vg5k_state::z80_irq_clear)
{
m_maincpu->set_input_line(0, CLEAR_LINE);
}
TIMER_DEVICE_CALLBACK_MEMBER(vg5k_state::z80_irq)
{
m_maincpu->set_input_line(0, ASSERT_LINE);
m_z80_irq_clear_timer->adjust(attotime::from_usec(100));
}
TIMER_DEVICE_CALLBACK_MEMBER(vg5k_state::vg5k_scanline)
{
m_ef9345->update_scanline((uint16_t)param);
}
INPUT_CHANGED_MEMBER(vg5k_state::delta_button)
{
// The yellow Delta key on the keyboard is wired so that it asserts directly the NMI line of the Z80.
if (!newval) {
m_maincpu->pulse_input_line(INPUT_LINE_NMI, attotime::zero);
}
}
void vg5k_state::machine_start()
{
save_item(NAME(m_ef9345_offset));
save_item(NAME(m_printer_latch));
save_item(NAME(m_printer_signal));
m_z80_irq_clear_timer = timer_alloc(FUNC(vg5k_state::z80_irq_clear), this);
}
void vg5k_state::machine_reset()
{
m_ef9345_offset = 0;
m_printer_latch = 0;
m_printer_signal = 0;
}
/* F4 Character Displayer */
static const gfx_layout vg5k_charlayout =
{
8, 16, /* 8 x 16 characters */
256, /* 256 characters */
1, /* 1 bits per pixel */
{ 0 }, /* no bitplanes */
/* x offsets */
{ 7, 6, 5, 4, 3, 2, 1, 0 },
/* y offsets */
{ 0, 8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
8*16 /* every char takes 16 bytes */
};
static GFXDECODE_START( gfx_vg5k )
GFXDECODE_ENTRY( "ef9345", 0x2000, vg5k_charlayout, 0, 4 )
GFXDECODE_END
void vg5k_state::init_vg5k()
{
uint8_t *FNT = memregion("ef9345")->base();
uint16_t dest = 0x2000;
/* Unscramble the chargen rom as the format is too complex for gfxdecode to handle unaided */
for (uint16_t a = 0; a < 8192; a+=4096)
for (uint16_t b = 0; b < 2048; b+=64)
for (uint16_t c = 0; c < 4; c++)
for (uint16_t d = 0; d < 64; d+=4)
FNT[dest++]=FNT[a|b|c|d];
/* install expansion memory*/
address_space &program = m_maincpu->space(AS_PROGRAM);
uint8_t *ram = m_ram->pointer();
uint16_t ram_size = m_ram->size();
if (ram_size > 0x4000)
program.install_ram(0x8000, 0x3fff + ram_size, ram);
}
void vg5k_state::vg5k(machine_config &config)
{
/* basic machine hardware */
Z80(config, m_maincpu, XTAL(4'000'000));
m_maincpu->set_addrmap(AS_PROGRAM, &vg5k_state::vg5k_mem);
m_maincpu->set_addrmap(AS_IO, &vg5k_state::vg5k_io);
m_maincpu->refresh_cb().set(FUNC(vg5k_state::z80_m1_w));
TIMER(config, "vg5k_scanline").configure_scanline(FUNC(vg5k_state::vg5k_scanline), "screen", 0, 10);
TIMER(config, "irq_timer").configure_periodic(FUNC(vg5k_state::z80_irq), attotime::from_msec(20));
EF9345(config, m_ef9345, 0);
m_ef9345->set_palette_tag("palette");
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(50);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
screen.set_screen_update("ef9345", FUNC(ef9345_device::screen_update));
screen.set_size(336, 300);
screen.set_visarea(00, 336-1, 00, 270-1);
GFXDECODE(config, "gfxdecode", "palette", gfx_vg5k);
PALETTE(config, "palette").set_entries(8);
/* sound hardware */
SPEAKER(config, "speaker").front_center();
DAC_1BIT(config, "dac", 0).add_route(ALL_OUTPUTS, "speaker", 0.125);
/* cassette */
CASSETTE(config, m_cassette);
m_cassette->set_formats(vg5k_cassette_formats);
m_cassette->set_default_state(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED);
m_cassette->add_route(0, "speaker", 0.05);
m_cassette->set_interface("vg5k_cass");
/* printer */
PRINTER(config, m_printer, 0);
/* internal ram */
RAM(config, RAM_TAG).set_default_size("16K").set_extra_options("32K,48K");
/* Software lists */
SOFTWARE_LIST(config, "cass_list").set_original("vg5k");
}
/* ROM definition */
ROM_START( vg5k )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_SYSTEM_BIOS(0, "v11", "BASIC v1.1")
ROMX_LOAD( "vg5k11.bin", 0x0000, 0x4000, CRC(a6f4a0ea) SHA1(58eccce33cc21fc17bc83921018f531b8001eda3), ROM_BIOS(0) ) // dumped from a Philips VG-5000.
ROM_SYSTEM_BIOS(1, "v10", "BASIC v1.0")
ROMX_LOAD( "vg5k10.bin", 0x0000, 0x4000, BAD_DUMP CRC(57983260) SHA1(5ad1787a6a597b5c3eedb7c3704b649faa9be4ca), ROM_BIOS(1) )
ROM_REGION( 0x4000, "ef9345", 0 )
ROM_LOAD( "charset.rom", 0x0000, 0x2000, BAD_DUMP CRC(b2f49eb3) SHA1(d0ef530be33bfc296314e7152302d95fdf9520fc) ) // from dcvg5k
ROM_END
} // anonymous namespace
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1984, vg5k, 0, 0, vg5k, vg5k, vg5k_state, init_vg5k, "Philips", "VG-5000", MACHINE_SUPPORTS_SAVE | MACHINE_NOT_WORKING )