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// license:BSD-3-Clause
// copyright-holders:
/***********************************************************************************************************************************
Skeleton driver for Qume QVT-103 video display terminal.
************************************************************************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "cpu/mcs48/mcs48.h"
#include "machine/nvram.h"
#include "machine/z80ctc.h"
#include "machine/z80sio.h"
#include "video/crt9007.h"
#include "emupal.h"
#include "screen.h"
class qvt103_state : public driver_device
{
public:
qvt103_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_p_chargen(*this, "chargen")
, m_vram(*this, "vram")
{ }
void qvt103(machine_config &config);
private:
u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
void io_map(address_map &map);
void mem_map(address_map &map);
required_device<z80_device> m_maincpu;
required_region_ptr<u8> m_p_chargen;
required_shared_ptr<u8> m_vram;
};
u32 qvt103_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
for (int col = 0; col < 25; col++)
{
for (int row = 0; row < 80; row++)
{
uint8_t code = m_vram[col * 80 + row] & 0x7f;
for (int y = 0; y < 12; y++)
{
uint16_t gfx = m_p_chargen[code << 4 | y];
for (int x = 0; x < 8; x++)
bitmap.pix(col*12 + y, row*8 + (7 - x)) = BIT(gfx, x) ? rgb_t::white() : rgb_t::black();
}
}
}
return 0;
}
void qvt103_state::mem_map(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x5fff).rom().region("maincpu", 0);
map(0x6000, 0x6001).rw("kbdmcu", FUNC(i8741a_device::upi41_master_r), FUNC(i8741a_device::upi41_master_w));
// map(0x6000, 0x6001).lr8("test", [this]() -> u8 { return machine().rand(); }); // uncomment to pass kbd test
map(0x8000, 0x87ff).ram().share("nvram");
map(0xa000, 0xa03f).rw("vpac", FUNC(crt9007_device::read), FUNC(crt9007_device::write));
map(0xc000, 0xdfff).ram(); // not entirely contiguous?
map(0xe000, 0xffff).ram().share("vram");
}
void qvt103_state::io_map(address_map &map)
{
map.global_mask(0xff);
map(0x14, 0x17).rw("dart", FUNC(z80dart_device::ba_cd_r), FUNC(z80dart_device::ba_cd_w));
map(0x18, 0x1b).rw("ctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
}
static INPUT_PORTS_START( qvt103 )
INPUT_PORTS_END
static const gfx_layout char_layout =
{
8,12,
RGN_FRAC(1,1),
1,
{ 0 },
{ 7, 0, 1, 2, 3, 4, 5, 6 }, // drawing chars look better with 0, 1, 2, 3, 4, 5, 6, 7
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8 },
8*16
};
static GFXDECODE_START(chars)
GFXDECODE_ENTRY("chargen", 0, char_layout, 0, 1)
GFXDECODE_END
static const z80_daisy_config daisy_chain[] =
{
{ "dart" },
{ "ctc" },
{ nullptr }
};
void qvt103_state::qvt103(machine_config &config)
{
Z80(config, m_maincpu, 29.376_MHz_XTAL / 9); // divider guessed
m_maincpu->set_addrmap(AS_PROGRAM, &qvt103_state::mem_map);
m_maincpu->set_addrmap(AS_IO, &qvt103_state::io_map);
m_maincpu->set_daisy_config(daisy_chain);
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // TC5516APL + battery
z80ctc_device &ctc(Z80CTC(config, "ctc", 29.376_MHz_XTAL / 9));
ctc.intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
z80dart_device &dart(Z80DART(config, "dart", 29.376_MHz_XTAL / 9));
dart.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_raw(29.376_MHz_XTAL * 2 / 3, 102 * 10, 0, 80 * 10, 320, 0, 300);
//screen.set_raw(29.376_MHz_XTAL, 170 * 9, 0, 132 * 9, 320, 0, 300);
screen.set_screen_update(FUNC(qvt103_state::screen_update));
PALETTE(config, "palette", palette_device::MONOCHROME_HIGHLIGHT);
GFXDECODE(config, "gfxdecode", "palette", chars);
crt9007_device &vpac(CRT9007(config, "vpac", 29.376_MHz_XTAL / 15));
vpac.set_character_width(10);
vpac.int_callback().set("ctc", FUNC(z80ctc_device::trg3));
I8741A(config, "kbdmcu", 6_MHz_XTAL);
}
/**************************************************************************************************************
Qume QVT-103.
Chips: Z80A, Z80A DART, Z80A CTC, 2x CRT9212, 5x HM6116P-2, TC5516APL, D8741AD, CRT9007, 1x 10-sw dip, Button battery.
Crystals: (all hard to read) 29.376, 6.000
Keyboard CPU, Crystal, ROM are on the main board.
***************************************************************************************************************/
ROM_START( qvt103 )
ROM_REGION(0x6000, "maincpu", 0)
ROM_LOAD( "t103e1.u28", 0x0000, 0x2000, CRC(eace3cbe) SHA1(1e7f395c5233d8656df5305163d050275f0a8033) )
ROM_LOAD( "t103e2.u27", 0x2000, 0x4000, CRC(100cf542) SHA1(4b2569d509790a0f94b4447fb9d3d42582fcaf66) )
ROM_REGION(0x1000, "chargen", 0)
ROM_LOAD( "c103b.u40", 0x0000, 0x1000, CRC(3419760d) SHA1(3455c70ed48c7f7769d73a84f152beddf508094f) )
ROM_REGION(0x0400, "kbdmcu", 0)
ROM_LOAD( "k304a.u24", 0x0000, 0x0400, CRC(e4b1f0da) SHA1(e9f8c48c34105464b3db206b34f67e7603484fea) )
ROM_END
COMP( 1983, qvt103, 0, 0, qvt103, qvt103, qvt103_state, empty_init, "Qume", "QVT-103", MACHINE_IS_SKELETON )
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