// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic, Robbbert
/***************************************************************************
Plan-80
06/12/2009 Skeleton driver.
Summary of Monitor commands:
D - dump memory
F - fill memory
G - go (execute program at address)
I - in from a port and display
M - move?
O - out to a port
S - edit memory
ToDo:
- fix autorepeat on the keyboard
- Add missing devices
- Picture of unit shows graphics, possibly a PCG
****************************************************************************/
#include "emu.h"
#include "cpu/i8085/i8085.h"
#include "screen.h"
class plan80_state : public driver_device
{
public:
enum
{
TIMER_BOOT
};
plan80_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_p_videoram(*this, "videoram")
, m_p_chargen(*this, "chargen")
{ }
DECLARE_READ8_MEMBER(plan80_04_r);
DECLARE_WRITE8_MEMBER(plan80_09_w);
DECLARE_DRIVER_INIT(plan80);
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
void plan80(machine_config &config);
void plan80_io(address_map &map);
void plan80_mem(address_map &map);
private:
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
uint8_t m_kbd_row;
virtual void machine_reset() override;
required_device<cpu_device> m_maincpu;
required_shared_ptr<uint8_t> m_p_videoram;
required_region_ptr<u8> m_p_chargen;
};
READ8_MEMBER( plan80_state::plan80_04_r )
{
uint8_t data = 0xff;
if (m_kbd_row == 0xfe)
data = ioport("LINE0")->read();
else
if (m_kbd_row == 0xfd)
data = ioport("LINE1")->read();
else
if (m_kbd_row == 0xfb)
data = ioport("LINE2")->read();
else
if (m_kbd_row == 0xf7)
data = ioport("LINE3")->read();
else
if (m_kbd_row == 0xef)
data = ioport("LINE4")->read();
return data;
}
WRITE8_MEMBER( plan80_state::plan80_09_w )
{
m_kbd_row = data;
}
void plan80_state::plan80_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x07ff).bankrw("boot");
map(0x0800, 0xefff).ram();
map(0xf000, 0xf7ff).ram().share("videoram");
map(0xf800, 0xffff).rom();
}
void plan80_state::plan80_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0xff);
map(0x04, 0x04).r(this, FUNC(plan80_state::plan80_04_r));
map(0x09, 0x09).w(this, FUNC(plan80_state::plan80_09_w));
}
/* Input ports */
static INPUT_PORTS_START( plan80 ) // Keyboard was worked out by trial & error;'F' keys produce foreign symbols
PORT_START("LINE0") /* FE */
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F1)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F2)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A -") PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('-')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q ! 1") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('!') PORT_CHAR('1')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F-shift") PORT_CODE(KEYCODE_RSHIFT)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Enter") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P ?? 0") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('0')
PORT_START("LINE1") /* FD */
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Backspace") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Numbers") PORT_CODE(KEYCODE_LCONTROL)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X /") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('/')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D =") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('=')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E # 3") PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('#') PORT_CHAR('3')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M .") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('.')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K [") PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('[')
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I ( 8") PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('(') PORT_CHAR('8')
PORT_START("LINE2") /* FB */
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V ;") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR(';')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G _") PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('_')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T % 5") PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('%') PORT_CHAR('5')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B ?") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('?')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H <") PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('<')
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y & 6") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('&') PORT_CHAR('6')
PORT_START("LINE3") /* F7 */
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C :") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR(':')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F ^") PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('^')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R $ 4") PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('$') PORT_CHAR('4')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N ,") PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR(',')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J >") PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('>')
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U \' 7") PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('\'') PORT_CHAR('7')
PORT_START("LINE4") /* EF */
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F3)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F4)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z *") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('*')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S +") PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('+')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W \" 2") PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('\"') PORT_CHAR('2')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F5)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L ]") PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR(']')
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O ) 9") PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR(')') PORT_CHAR('9')
INPUT_PORTS_END
void plan80_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
switch (id)
{
case TIMER_BOOT:
/* after the first 4 bytes have been read from ROM, switch the ram back in */
membank("boot")->set_entry(0);
break;
default:
assert_always(false, "Unknown id in plan80_state::device_timer");
}
}
void plan80_state::machine_reset()
{
membank("boot")->set_entry(1);
timer_set(attotime::from_usec(10), TIMER_BOOT);
}
DRIVER_INIT_MEMBER(plan80_state,plan80)
{
uint8_t *RAM = memregion("maincpu")->base();
membank("boot")->configure_entries(0, 2, &RAM[0x0000], 0xf800);
}
uint32_t plan80_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
uint8_t y,ra,chr,gfx;
uint16_t sy=0,ma=0,x;
for (y = 0; y < 32; y++)
{
for (ra = 0; ra < 8; ra++)
{
uint16_t *p = &bitmap.pix16(sy++);
for (x = ma; x < ma+48; x++)
{
chr = m_p_videoram[x];
gfx = m_p_chargen[(chr << 3) | ra] ^ (BIT(chr, 7) ? 0xff : 0);
/* Display a scanline of a character */
*p++ = BIT(gfx, 6);
*p++ = BIT(gfx, 5);
*p++ = BIT(gfx, 4);
*p++ = BIT(gfx, 3);
*p++ = BIT(gfx, 2);
*p++ = BIT(gfx, 1);
}
}
ma+=64;
}
return 0;
}
/* F4 Character Displayer */
static const gfx_layout plan80_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*8 /* every char takes 8 bytes */
};
static GFXDECODE_START( plan80 )
GFXDECODE_ENTRY( "chargen", 0x0000, plan80_charlayout, 0, 1 )
GFXDECODE_END
MACHINE_CONFIG_START(plan80_state::plan80)
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",I8080, 2048000)
MCFG_CPU_PROGRAM_MAP(plan80_mem)
MCFG_CPU_IO_MAP(plan80_io)
/* video hardware */
MCFG_SCREEN_ADD_MONOCHROME("screen", RASTER, rgb_t::green())
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_UPDATE_DRIVER(plan80_state, screen_update)
MCFG_SCREEN_SIZE(48*6, 32*8)
MCFG_SCREEN_VISIBLE_AREA(0, 48*6-1, 0, 32*8-1)
MCFG_SCREEN_PALETTE("palette")
MCFG_GFXDECODE_ADD("gfxdecode", "palette", plan80)
MCFG_PALETTE_ADD_MONOCHROME("palette")
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( plan80 )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "pl80mon.bin", 0xf800, 0x0800, CRC(433fb685) SHA1(43d53c35544d3a197ab71b6089328d104535cfa5))
ROM_REGION( 0x10000, "spare", 0 )
ROM_LOAD_OPTIONAL( "pl80mod.bin", 0xf000, 0x0800, CRC(6bdd7136) SHA1(721eab193c33c9330e0817616d3d2b601285fe50))
ROM_REGION( 0x0800, "chargen", 0 )
ROM_LOAD( "pl80gzn.bin", 0x0000, 0x0800, CRC(b4ddbdb6) SHA1(31bf9cf0f2ed53f48dda29ea830f74cea7b9b9b2))
ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS
COMP( 1988, plan80, 0, 0, plan80, plan80, plan80_state, plan80, "Tesla Eltos", "Plan-80", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)