// license:BSD-3-Clause
// copyright-holders:
/***********************************************************************************************************************************
2017-11-02 Skeleton
Hazeltine Esprit terminals.
Espirit: R6502P, R6531, HD46505RP, MC6850P, 16.5888
Espirit3: 2x R6551AP, HD46850P (6850), R6502BP, R6545-1AP, R6522AP, RO-3-9333B, 1.8432, 17.9712
************************************************************************************************************************************/
#include "emu.h"
#include "cpu/m6502/m6502.h"
#include "machine/input_merger.h"
#include "machine/6850acia.h"
#include "machine/6522via.h"
#include "machine/mos6551.h"
#include "video/mc6845.h"
#include "emupal.h"
#include "screen.h"
class esprit_state : public driver_device
{
public:
esprit_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_p_videoram(*this, "videoram")
, m_palette(*this, "palette")
{ }
void esprit(machine_config &config);
void esprit3(machine_config &config);
void init_init();
private:
MC6845_UPDATE_ROW(crtc_update_row);
MC6845_ON_UPDATE_ADDR_CHANGED(crtc_update_addr);
void mem3_map(address_map &map);
void mem_map(address_map &map);
required_device<cpu_device> m_maincpu;
required_region_ptr<u8> m_p_chargen;
required_shared_ptr<u8> m_p_videoram;
optional_device<palette_device> m_palette;
};
void esprit_state::mem_map(address_map &map)
{
map.global_mask(0x7fff);
map(0x0058, 0x0058).rw("crtc", FUNC(mc6845_device::status_r), FUNC(mc6845_device::address_w));
map(0x0059, 0x0059).rw("crtc", FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w));
map(0x0078, 0x0079).rw("acia", FUNC(acia6850_device::read), FUNC(acia6850_device::write));
map(0x0080, 0x00ff).mirror(0x100).ram();
//map(0x0780, 0x078e).rw("rrioc", FUNC(r6531_device::io_r), FUNC(r6531_device::io_w));
map(0x2000, 0x27ff).ram().share("videoram");
map(0x7000, 0x7fff).rom().region("roms", 0);
}
void esprit_state::mem3_map(address_map &map)
{
map(0x0000, 0x202f).ram();
map(0x2030, 0x3fff).ram().share("videoram"); // it might start at 3000
map(0x81c0, 0x81c0).rw("crtc", FUNC(r6545_1_device::status_r), FUNC(r6545_1_device::address_w));
map(0x81c1, 0x81c1).rw("crtc", FUNC(r6545_1_device::register_r), FUNC(r6545_1_device::register_w));
map(0x93c0, 0x93c1).rw("acia", FUNC(acia6850_device::read), FUNC(acia6850_device::write));
map(0x95c0, 0x95c3).rw("acia1", FUNC(mos6551_device::read), FUNC(mos6551_device::write));
map(0x99c0, 0x99c3).rw("acia2", FUNC(mos6551_device::read), FUNC(mos6551_device::write));
map(0xb1c0, 0xb1cf).m("via", FUNC(via6522_device::map));
map(0xe000, 0xffff).rom().region("roms", 0);
}
static INPUT_PORTS_START( esprit )
INPUT_PORTS_END
MC6845_UPDATE_ROW(esprit_state::crtc_update_row)
{
const rgb_t *pens = m_palette->palette()->entry_list_raw();
uint32_t *p = &bitmap.pix32(y);
for (uint16_t x = 0; x < x_count; x++)
{
uint16_t mem = (ma + x) & 0x7ff;
uint8_t chr = m_p_videoram[mem];
/* get pattern of pixels for that character scanline */
uint16_t gfx = m_p_chargen[(chr<<4) | ra] ^ ((x == cursor_x) ? 0x1ff : 0);
/* Display a scanline of a character (9 pixels) */
*p++ = pens[BIT(gfx, 8)];
*p++ = pens[BIT(gfx, 7)];
*p++ = pens[BIT(gfx, 6)];
*p++ = pens[BIT(gfx, 5)];
*p++ = pens[BIT(gfx, 4)];
*p++ = pens[BIT(gfx, 3)];
*p++ = pens[BIT(gfx, 2)];
*p++ = pens[BIT(gfx, 1)];
*p++ = pens[BIT(gfx, 0)];
}
}
MC6845_ON_UPDATE_ADDR_CHANGED(esprit_state::crtc_update_addr)
{
}
/* F4 Character Displayer */
static const gfx_layout esprit_charlayout =
{
8, 12, /* 8 x 12 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, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8 },
8*16 /* every char takes 16 bytes */
};
static GFXDECODE_START( gfx_esprit )
GFXDECODE_ENTRY( "chargen", 0x0000, esprit_charlayout, 0, 1 )
GFXDECODE_END
void esprit_state::init_init()
{
// chargen is incomplete, copy the first half into the vacant second half
for (u16 i = 0; i < 0x800; i++)
m_p_chargen[0x800 | i] = m_p_chargen[i];
}
void esprit_state::esprit(machine_config &config)
{
M6502(config, m_maincpu, 16.5888_MHz_XTAL / 18); // divider guessed
m_maincpu->set_addrmap(AS_PROGRAM, &esprit_state::mem_map);
//R6531(config, "rrioc", 16.5888_MHz_XTAL / 18);
acia6850_device &acia(ACIA6850(config, "acia"));
acia.irq_handler().set_inputline(m_maincpu, m6502_device::NMI_LINE);
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_color(rgb_t::green());
screen.set_raw(16.5888_MHz_XTAL, 900, 0, 720, 307, 0, 288);
screen.set_screen_update("crtc", FUNC(mc6845_device::screen_update));
GFXDECODE(config, "gfxdecode", m_palette, gfx_esprit);
PALETTE(config, m_palette, palette_device::MONOCHROME);
/* Devices */
mc6845_device &crtc(MC6845(config, "crtc", 16.5888_MHz_XTAL / 9));
crtc.set_screen("screen");
crtc.set_show_border_area(false);
crtc.set_char_width(9);
crtc.set_update_row_callback(FUNC(esprit_state::crtc_update_row));
}
void esprit_state::esprit3(machine_config &config)
{
M6502(config, m_maincpu, 17.9712_MHz_XTAL / 18); // divider guessed
m_maincpu->set_addrmap(AS_PROGRAM, &esprit_state::mem3_map);
INPUT_MERGER_ANY_HIGH(config, "mainirq").output_handler().set_inputline(m_maincpu, m6502_device::IRQ_LINE);
acia6850_device &acia(ACIA6850(config, "acia"));
acia.irq_handler().set("mainirq", FUNC(input_merger_device::in_w<2>));
mos6551_device &acia1(MOS6551(config, "acia1", 17.9712_MHz_XTAL / 18));
acia1.set_xtal(1.8432_MHz_XTAL);
acia1.irq_handler().set("mainirq", FUNC(input_merger_device::in_w<0>));
mos6551_device &acia2(MOS6551(config, "acia2", 17.9712_MHz_XTAL / 18));
acia2.set_xtal(1.8432_MHz_XTAL);
acia2.irq_handler().set("mainirq", FUNC(input_merger_device::in_w<1>));
via6522_device &via(VIA6522(config, "via", 17.9712_MHz_XTAL / 18));
via.irq_handler().set_inputline(m_maincpu, m6502_device::NMI_LINE);
via.writepb_handler().set("acia", FUNC(acia6850_device::write_rxc)).bit(7);
via.writepb_handler().append("acia", FUNC(acia6850_device::write_txc)).bit(7);
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_color(rgb_t::green());
screen.set_raw(17.9712_MHz_XTAL, 936, 0, 720, 320, 0, 288);
screen.set_screen_update("crtc", FUNC(r6545_1_device::screen_update));
GFXDECODE(config, "gfxdecode", m_palette, gfx_esprit);
PALETTE(config, m_palette, palette_device::MONOCHROME);
r6545_1_device &crtc(R6545_1(config, "crtc", 17.9712_MHz_XTAL / 9));
crtc.set_screen("screen");
crtc.set_show_border_area(false);
crtc.set_char_width(9);
crtc.set_update_row_callback(FUNC(esprit_state::crtc_update_row));
crtc.set_on_update_addr_change_callback(FUNC(esprit_state::crtc_update_addr));
crtc.out_hsync_callback().set("via", FUNC(via6522_device::write_pb6)).invert();
}
ROM_START( esprit )
// Esprit
ROM_REGION( 0x1000, "roms", 0 )
ROM_LOAD( "hazeltine_esprit.u19", 0x0000, 0x1000, CRC(6fdec792) SHA1(a1d1d68c8793e7e15ab5cd17682c299dff3985cb) )
ROM_REGION( 0x1000, "chargen", ROMREGION_INVERT )
ROM_LOAD( "hazeltine_esprit.u26", 0x0000, 0x0804, CRC(93f45f13) SHA1(1f493b44124c348759469e24fdfa8b7c52fe6fac) )
ROM_REGION( 0x0800, "rrioc", 0 )
ROM_LOAD( "r3198-11.u20", 0x0000, 0x0800, NO_DUMP ) // internal ROM apparently unused
ROM_END
ROM_START( esprit3 )
// Esprit III
ROM_REGION( 0x10000, "roms", 0 )
ROM_LOAD( "hazeltine_espritiii.u5", 0x0000, 0x2000, CRC(fd63dad1) SHA1(b2a3e7db8480b28cab2b2834ad89fb6257f13cba) )
ROM_REGION( 0x1000, "chargen", 0 )
ROM_LOAD( "hazeltine_espritiii.u19", 0x0000, 0x1000, CRC(33e4a8ef) SHA1(e19c84a3c5f94812928ea84bab3ede7970dd5e72) )
ROM_END
COMP( 1981, esprit, 0, 0, esprit, esprit, esprit_state, init_init, "Hazeltine", "Esprit", MACHINE_IS_SKELETON )
COMP( 1981, esprit3, esprit, 0, esprit3, esprit, esprit_state, empty_init, "Hazeltine", "Esprit III", MACHINE_IS_SKELETON )