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|
// license: BSD-3-Clause
// copyright-holders: AJR, Dirk Best
/****************************************************************************
Falco 500 series terminals
Third generation of Falco terminals, after the TS and FAME series. Many
functions are now handled by a custom ASIC that was updated a few times
between models.
List of models (incomplete):
- 1986: 500, 542, 5220, 5500
- 1987: 500e, 5220e, 5000, 5600
- 1988: 5600s, 5220s, 580, 5330
This drivers contains dumps for the 500e, 5220e and 5220s models. The
5220e is emulated to an advanced stage and usable, the others are
skeletons for now.
Additional notes:
- The keyboard interface is completely wrong. It should be serially
connected to the ASIC (and support different models)
- The ASIC emulation still needs lots of work. Lots of guesses and
many unknown and unhandled writes.
Detailed hardware descriptions for the dumped models:
Falco 5220e:
- Z0840006PSC Z80 CPU
- Z0843006PSC Z80 CTC
- Z0844006PSC Z80 SIO/0
- L1A3417 041500-001 FALCO TAE8739Δ
- PAL labeled F-500E
- D43256C-10L labeled ARAM1, socket label AROM0 empty
- D43256C-10L labeled CRAM1, socket label CROM0 empty
- CXK5864AP-10L (next to ASIC)
- TMM27256AD-20*2 152321-000 (ROM0) 152321-001 (ROM1)
- CXK5864AP-10L (next to ROMs)
- 37.980 MHz XTAL
- 12.288 MHz XTAL
- Bell
- Space for an IC labeled "CLOCK", not fitted
Falco 500e
- PCB labeled "PWB MINOTAUR V016 P/N 130165-016 FALCO DATA PRODUCTS COPYRIGHT 4-93"
- Z0840006PSC Z80 CPU
- Z0843006PSC Z80 CTC
- Z0844006PSC Z80 SIO/0
- L1A3641 041501-001 NAP 9314Δ (SG) WA39038 HONG KONG
- PALs labeled 150133 and 150424 (near ASIC/CPU)
- PAL labeled 150423 (near CPU/CTC/SIO)
- HY62256ALP-70 and empty socket
- HY62256ALP-70 and empty socket
- HY62256ALP-70 (next to ASIC)
- 27C512-15*2 155710-000 and 155710-001
- HY62256ALP-10
- 54.046000 MHz XTAL
- 12.288 MHz XTAL
- Bell
Falco 5220s:
- Z0840006PSC Z80 CPU
- Z0843006PSC Z80 CTC
- Z0844006PSC Z80 SIO/0
- L1A3641 041501-001 FALCO TAG 8914 Δ 8276 HONG KONG
- PAL unlabeled
- HY6264P-10 labeled ARAM1, socket label AROM0 empty
- HY6264LP labeled CRAM1, socket label CROM0 empty
- HY6264P-10 (next to ASIC)
- 27256*2 168412-000 (ROM0) 168412-001 (ROM1)
- HY6264LP-12
- 37.980 MHz XTAL
- 12.288 MHz XTAL
- Bell
****************************************************************************/
#include "emu.h"
#include "bus/rs232/hlemouse.h"
#include "bus/rs232/rs232.h"
#include "cpu/z80/z80.h"
#include "machine/bankdev.h"
#include "machine/clock.h"
#include "machine/f5220_kbd.h"
#include "machine/nvram.h"
#include "machine/z80ctc.h"
#include "machine/z80sio.h"
#include "sound/spkrdev.h"
#include "emupal.h"
#include "screen.h"
#include "speaker.h"
namespace {
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class falco500_state : public driver_device
{
public:
falco500_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_rambank(*this, "rambank"),
m_ctc(*this, "ctc"),
m_screen(*this, "screen"),
m_palette(*this, "palette"),
m_rombank(*this, "rombank"),
m_ram(*this, "ram"),
m_charram(*this, "charram"),
m_kbd(*this, "kbd"),
m_asic_5a(0)
{ }
void falco500(machine_config &config);
protected:
virtual void machine_start() override;
virtual void machine_reset() override;
private:
required_device<z80_device> m_maincpu;
required_device<address_map_bank_device> m_rambank;
required_device<z80ctc_device> m_ctc;
required_device<screen_device> m_screen;
required_device<palette_device> m_palette;
required_memory_bank m_rombank;
required_shared_ptr<uint8_t> m_ram;
required_shared_ptr<uint8_t> m_charram;
required_device<f5220_kbd_device> m_kbd;
void mem_map(address_map &map);
void bank_map(address_map &map);
void io_map(address_map &map);
uint8_t asic_data_r();
uint8_t asic_status_r();
void asic_rambank_w(uint8_t data);
void asic_settings_w(uint8_t data);
void asic_cursor_addr_w(offs_t offset, uint8_t data);
void asic_56_w(uint8_t data);
void asic_5a_w(uint8_t data);
void asic_mode_w(uint8_t data);
void asic_cmd_w(uint8_t data);
void kbd_int_w(int state);
uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
void rombank_w(uint8_t data);
void unk_40_w(uint8_t data);
uint8_t m_unk_40;
uint8_t m_asic_status;
uint8_t m_asic_settings;
uint16_t m_asic_cursor_addr;
uint8_t m_asic_56;
uint8_t m_asic_5a;
uint8_t m_asic_mode;
};
//**************************************************************************
// ADDRESS MAPS
//**************************************************************************
void falco500_state::mem_map(address_map &map)
{
map(0x0000, 0x7fff).rom().region("maincpu", 0);
map(0x8000, 0xbfff).bankr("rombank");
map(0xc000, 0xdfff).ram().share("nvram");
map(0xe000, 0xffff).m(m_rambank, FUNC(address_map_bank_device::amap8));
}
void falco500_state::bank_map(address_map &map)
{
map(0x00000, 0x0ffff).ram().share("ram"); // 2x NEC D43256C-10L? (5220s only has 2x HY6264P-10)
map(0x10000, 0x11fff).ram().share("charram"); // CXK5864AP-10L / HY6264LP-12?
}
void falco500_state::io_map(address_map &map)
{
map.global_mask(0xff);
map(0x00, 0x00).w(FUNC(falco500_state::rombank_w));
map(0x40, 0x40).w(FUNC(falco500_state::unk_40_w));
map(0x50, 0x50).r(FUNC(falco500_state::asic_data_r));
map(0x51, 0x51).r(FUNC(falco500_state::asic_status_r));
map(0x52, 0x52).w(FUNC(falco500_state::asic_rambank_w));
map(0x53, 0x53).w(FUNC(falco500_state::asic_settings_w));
map(0x54, 0x55).w(FUNC(falco500_state::asic_cursor_addr_w));
map(0x56, 0x56).w(FUNC(falco500_state::asic_56_w));
map(0x5a, 0x5a).w(FUNC(falco500_state::asic_5a_w)); // L1A3641 only?
map(0x5b, 0x5b).w(FUNC(falco500_state::asic_cmd_w));
map(0x5d, 0x5d).w(FUNC(falco500_state::asic_mode_w));
map(0x60, 0x63).rw("sio", FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w));
map(0x70, 0x73).rw(m_ctc, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
map(0x88, 0x8b).nopw(); // second SIO?
map(0x90, 0x93).nopw(); // second CTC?
}
//**************************************************************************
// ASIC
//**************************************************************************
void falco500_state::asic_rambank_w(u8 data)
{
m_rambank->set_bank(data & 0x0f);
if (data > 8)
logerror("rambank_w: %02x\n", data);
}
uint8_t falco500_state::asic_data_r()
{
return m_kbd->read();
}
uint8_t falco500_state::asic_status_r()
{
// 765----- unknown (not used?)
// ---4---- keyboard data available
// ----3--- unknown
// -----2-- unknown (needs to toggle)
// ------1- unknown
// -------0 unknown
m_asic_status &= ~0x04;
m_asic_status |= m_screen->vblank() ? 0x04 : 0x00; // maybe?
return m_asic_status;
}
void falco500_state::asic_settings_w(u8 data)
{
logerror("asic_settings_w: unk %d curblink %d curshape %d curen %d undrline %d\n",
BIT(data, 7), BIT(data, 6), BIT(data, 5), BIT(data, 4), data & 0x0f);
// 7------- unknown
// -6------ cursor blink enabled
// --5----- cursor shape (underline, block)
// ---4---- cursor enabled
// ----3210 underline location
m_asic_settings = data;
}
void falco500_state::asic_cursor_addr_w(offs_t offset, uint8_t data)
{
if (offset)
{
m_asic_cursor_addr &= 0x00ff;
m_asic_cursor_addr |= ((data & 0xf0) << 8) << 1;
m_asic_cursor_addr |= (data & 0x0f) << 8;
}
else
{
m_asic_cursor_addr = (m_asic_cursor_addr & 0xff00) | (data << 0);
}
}
void falco500_state::asic_56_w(uint8_t data)
{
if (data != m_asic_56)
logerror("asic_56_w: %02x\n", data);
m_asic_56 = data;
}
void falco500_state::asic_5a_w(u8 data)
{
logerror("asic_5a_w: %02x\n", data);
m_asic_5a = data;
}
void falco500_state::asic_cmd_w(uint8_t data)
{
//logerror("asic_cmd_w: %02x\n", data);
// 0x7f -> reset asic?
// 7------- unknown
// -6------ reset keyboard data available?
// --543210 unknown
if (BIT(data, 6))
m_asic_status &= ~0x10;
}
void falco500_state::asic_mode_w(uint8_t data)
{
if (data != m_asic_mode)
logerror("asic_mode_w: %02x\n", data);
m_asic_mode = data;
// 7654321- unknown
// -------0 80/132 columns
// timing wrong
rectangle visarea(0, (BIT(data, 0) ? 1320 : 1120) - 1, 0, 400 - 1);
m_screen->configure(1500, 422, visarea, HZ_TO_ATTOSECONDS(60));
}
void falco500_state::kbd_int_w(int state)
{
if (state)
m_asic_status |= 0x10;
}
//**************************************************************************
// VIDEO EMULATION
//**************************************************************************
uint32_t falco500_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
const pen_t *const pen = m_palette->pens();
bitmap.fill(pen[0], cliprect);
int y = 0;
for (int line = 0; line < 50; line++)
{
// line attributes for each line
uint8_t la0 = m_ram[0x0000 + line * 2 + 0];
uint8_t la1 = m_ram[0x0000 + line * 2 + 1];
uint8_t la2 = m_ram[0x1000 + line * 2 + 0];
uint8_t la3 = m_ram[0x1000 + line * 2 + 1];
// la0 layout
// 76543210 line address offset low bytes
// la1 layout
// 7654---- line height
// ----3210 offset for double-height lines
// la2 layout
// 7------- line address highest bit (only for graphics mode?)
// -654---- line address bank (multiply by 2 to get the address)
// ----3210 line address offset high bytes
// la3 layout
// 7------- unknown
// -6------ set on the line between windows
// --5----- 80 columns/132 columns
// ---4---- graphics/alphanumeric
// ----3--- unknown
// -----2-- double width
// ------1- double height first half
// -------0 double height second half (but not working for line modes 26 and 44?)
uint16_t line_addr = (la2 << 8) | la0;
// move address highest bit to its place, shift bank left
line_addr = bitswap<16>(line_addr, 14, 13, 12, 15, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0);
//uint8_t unk_code = m_ram[0x0000 + line_addr]; // ?
//uint8_t unk_attr = m_ram[0x1000 + line_addr]; // ?
// skip unknown value
line_addr++;
uint8_t line_height = la1 >> 4;
line_height++;
// safety check to prevent writing out of bounds
if (y + line_height > (cliprect.max_y + 1))
return 0;
if (BIT(la3, 4))
{
// horizontal resolution 560 pixels
for (int col = 0; col < 560; col++)
{
uint16_t char_addr = line_addr + col;
uint8_t code = m_ram[0x0000 + char_addr];
// foreground/background colors
rgb_t fg = pen[1];
rgb_t bg = pen[0];
for (int x = 0; x < 8; x++)
{
if (BIT(la3, 2))
{
bitmap.pix(y + (col / 70), (((col % 70) * 8) * 2) + (x * 2) + 0) = BIT(code, x) ? fg : bg;
bitmap.pix(y + (col / 70), (((col % 70) * 8) * 2) + (x * 2) + 1) = BIT(code, x) ? fg : bg;
}
else
{
bitmap.pix(y + (col / 70), ((col % 70) * 8) + x) = BIT(code, x) ? fg : bg;
}
}
}
}
else
{
// figure out number of columns
int cols = BIT(la3, 5) ? 80 : 132;
if (BIT(la3, 2))
cols /= 2;
for (int col = 0; col < cols; col++)
{
uint16_t char_addr = line_addr + col;
uint8_t code = m_ram[0x0000 + char_addr];
uint8_t attr = m_ram[0x1000 + char_addr];
// code layout
// 7------- unknown
// -6543210 chargen address
// attr layout
// 7------- unknown
// -6------ chargen address high bit
// --5----- unknown
// ---4---- normal/bold
// ----3--- unknown
// -----2-- reverse
// ------1- blink
// -------0 underline
for (int y_char = 0; y_char < line_height; y_char++)
{
bool blink = bool(m_screen->frame_number() & 0x10); // timing?
bool underline = bool(y_char == (m_asic_settings & 0x0f));
int y_chargen = y_char;
// double height enabled?
if (la3 & 0x03)
y_chargen /= 2;
// double-height, first half
if (BIT(la3, 1))
y_chargen += 0;
// double height, second half
if (BIT(la3, 0))
y_chargen += ((la1 & 0x0f) + 1);
uint16_t gfx = m_charram[(BIT(attr, 6) << 12) | ((code & 0x7f) << 4) | y_chargen];
if (BIT(attr, 0) && underline)
gfx = 0x3ff;
if (BIT(attr, 1) && blink)
gfx = 0x000;
if (BIT(attr, 2))
gfx ^= 0x3ff;
// cursor
if (BIT(m_asic_settings, 4) && (m_asic_cursor_addr == char_addr))
{
if ((BIT(m_asic_settings, 5) == 1 && BIT(m_asic_settings, 6) == 0) || // block
(BIT(m_asic_settings, 5) == 1 && BIT(m_asic_settings, 6) == 1 && blink) || // block-blink
(BIT(m_asic_settings, 5) == 0 && underline && BIT(m_asic_settings, 6) == 0) || // underline
(BIT(m_asic_settings, 5) == 0 && underline && BIT(m_asic_settings, 6) == 1 && blink)) // underline-blink
gfx ^= 0x3ff; // might be solid instead
}
// foreground/background colors
rgb_t fg = BIT(attr, 4) ? pen[1] : pen[2];
rgb_t bg = pen[0];
for (int x = 0; x < 10; x++)
{
if (BIT(la3, 2))
{
// double-width
bitmap.pix(y + y_char, col * 2 * 10 + x * 2 + 0) = BIT(gfx, x) ? fg : bg;
bitmap.pix(y + y_char, col * 2 * 10 + x * 2 + 1) = BIT(gfx, x) ? fg : bg;
}
else
{
bitmap.pix(y + y_char, col * 10 + x) = BIT(gfx, x) ? fg : bg;
}
}
}
}
}
y += line_height;
}
return 0;
}
static const gfx_layout char_layout =
{
8, 16,
512,
1,
{ 0 },
{ 7, 6, 5, 4, 3, 2, 1, 0 },
{ STEP16(0, 8) },
8 * 16
};
static GFXDECODE_START(chars)
GFXDECODE_RAM("charram", 0, char_layout, 0, 1)
GFXDECODE_END
//**************************************************************************
// MACHINE EMULATION
//**************************************************************************
void falco500_state::rombank_w(u8 data)
{
m_rombank->set_entry(data & 3);
if (data > 3)
logerror("rombank_w: %02x\n", data);
}
void falco500_state::unk_40_w(uint8_t data)
{
if (data != m_unk_40)
logerror("unk_40_w: %02x\n", data);
m_unk_40 = data;
}
void falco500_state::machine_start()
{
m_rombank->configure_entries(0, 4, memregion("maincpu")->base(), 0x4000);
// register for save states
save_item(NAME(m_unk_40));
save_item(NAME(m_asic_status));
save_item(NAME(m_asic_settings));
save_item(NAME(m_asic_cursor_addr));
save_item(NAME(m_asic_56));
save_item(NAME(m_asic_5a));
save_item(NAME(m_asic_mode));
}
void falco500_state::machine_reset()
{
m_rombank->set_entry(0);
m_rambank->set_bank(0);
}
//**************************************************************************
// MACHINE DEFINTIONS
//**************************************************************************
static const z80_daisy_config daisy_chain[] =
{
{ "ctc" },
{ "sio" },
{ nullptr }
};
void falco500_state::falco500(machine_config &config)
{
Z80(config, m_maincpu, 12.288_MHz_XTAL / 2); // Z0840006PSC
m_maincpu->set_addrmap(AS_PROGRAM, &falco500_state::mem_map);
m_maincpu->set_addrmap(AS_IO, &falco500_state::io_map);
m_maincpu->set_daisy_config(daisy_chain);
ADDRESS_MAP_BANK(config, m_rambank);
m_rambank->set_map(&falco500_state::bank_map);
m_rambank->set_data_width(8);
m_rambank->set_addr_width(17);
m_rambank->set_stride(0x2000);
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // CXK5864AP-10L + battery
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
m_screen->set_color(rgb_t::amber());
m_screen->set_raw(37.98_MHz_XTAL, 1500, 0, 800, 422, 0, 400); // 25.32 kHz/60 Hz confirmed
m_screen->set_screen_update(FUNC(falco500_state::screen_update));
m_screen->screen_vblank().set_inputline(m_maincpu, INPUT_LINE_NMI); // maybe?
PALETTE(config, m_palette, palette_device::MONOCHROME_HIGHLIGHT);
GFXDECODE(config, "gfxdecode", m_palette, chars);
Z80CTC(config, m_ctc, 12.288_MHz_XTAL / 2); // Z0843006PSC
m_ctc->intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
m_ctc->set_clk<0>(12.288_MHz_XTAL / 10);
m_ctc->zc_callback<0>().set("sio", FUNC(z80sio_device::rxca_w));
m_ctc->zc_callback<0>().append("sio", FUNC(z80sio_device::txca_w));
m_ctc->set_clk<1>(12.288_MHz_XTAL / 10);
m_ctc->zc_callback<1>().set("sio", FUNC(z80sio_device::rxtxcb_w));
m_ctc->set_clk<2>(12.288_MHz_XTAL / 10); // ?
m_ctc->zc_callback<2>().set("bell", FUNC(speaker_sound_device::level_w));
m_ctc->set_clk<3>(12.288_MHz_XTAL / 10); // ?
z80sio_device &sio(Z80SIO(config, "sio", 12.288_MHz_XTAL / 2)); // Z0844006PSC
sio.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
sio.out_txda_callback().set("porta", FUNC(rs232_port_device::write_txd));
sio.out_rtsa_callback().set("porta", FUNC(rs232_port_device::write_rts));
sio.out_txdb_callback().set("portb", FUNC(rs232_port_device::write_txd));
sio.out_rtsb_callback().set("portb", FUNC(rs232_port_device::write_rts));
rs232_port_device &porta(RS232_PORT(config, "porta", default_rs232_devices, nullptr));
porta.rxd_handler().set("sio", FUNC(z80sio_device::rxa_w));
porta.cts_handler().set("sio", FUNC(z80sio_device::ctsa_w));
porta.option_add("microsoft_mouse", MSFT_HLE_SERIAL_MOUSE);
porta.option_add("msystems_mouse", MSYSTEMS_HLE_SERIAL_MOUSE);
rs232_port_device &portb(RS232_PORT(config, "portb", default_rs232_devices, nullptr));
portb.rxd_handler().set("sio", FUNC(z80sio_device::rxb_w));
portb.cts_handler().set("sio", FUNC(z80sio_device::ctsb_w));
portb.option_add("microsoft_mouse", MSFT_HLE_SERIAL_MOUSE);
portb.option_add("msystems_mouse", MSYSTEMS_HLE_SERIAL_MOUSE);
SPEAKER(config, "mono").front_center();
SPEAKER_SOUND(config, "bell").add_route(ALL_OUTPUTS, "mono", 1.00);
F5220_KBD(config, m_kbd);
m_kbd->int_handler().set(FUNC(falco500_state::kbd_int_w));
}
//**************************************************************************
// ROM DEFINITIONS
//**************************************************************************
ROM_START( falco5220e )
ROM_REGION(0x10000, "maincpu", 0) // (c) 1987 FDP, Inc 2321
ROM_LOAD("152321-000.bin", 0x0000, 0x8000, BAD_DUMP CRC(45ef4a68) SHA1(71e12dce710f9b66290618e299b2382834845057)) // wrong checksum, might be a bit flip
ROM_LOAD("152321-001.bin", 0x8000, 0x8000, CRC(91056626) SHA1(217ca3de76d5e9861284f5b64f8eff8e541fad3d))
ROM_END
ROM_START( falco500e )
ROM_REGION(0x20000, "maincpu", 0) // (c) 1991 FDP, Inc 1710
ROM_LOAD("155710-000.bin", 0x00000, 0x10000, CRC(cc7c53b8) SHA1(214e7f7b4ce2f0b4106292e4d73125df2c4ddc92))
ROM_LOAD("155710-001.bin", 0x10000, 0x10000, CRC(d1b51d71) SHA1(fd5aee5da1422d4f19045a98663df4f09472ca6b))
ROM_END
ROM_START( falco5220s )
ROM_REGION(0x10000, "maincpu", 0) // (c) 1989 FDP, Inc 0412
ROM_LOAD("168412-00.bin", 0x0000, 0x8000, CRC(de34b149) SHA1(6a4824eb5941f4c6475949011e64b28ab185ba59))
ROM_LOAD("168412-01.bin", 0x8000, 0x8000, CRC(e6facd5b) SHA1(2b9bf3ca18e3e30032dcb6faf0809b6cf6f467ac))
ROM_END
} // anonymous namespace
//**************************************************************************
// SYSTEM DRIVERS
//**************************************************************************
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1987, falco5220e, 0, 0, falco500, 0, falco500_state, empty_init, "Falco Data Products", "Falco 5220e", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE )
COMP( 1991, falco500e, falco5220e, 0, falco500, 0, falco500_state, empty_init, "Falco Data Products", "Falco 500e", MACHINE_IS_SKELETON )
COMP( 1989, falco5220s, falco5220e, 0, falco500, 0, falco500_state, empty_init, "Falco Data Products", "Falco 5220s", MACHINE_IS_SKELETON )
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