/***************************************************************************

        Pecom driver by Miodrag Milanovic

        08/11/2008 Preliminary driver.

****************************************************************************/

#include "emu.h"
#include "cpu/cosmac/cosmac.h"
#include "sound/cdp1869.h"
#include "sound/wave.h"
#include "machine/ram.h"
#include "includes/pecom.h"

/* Address maps */
static ADDRESS_MAP_START(pecom64_mem, AS_PROGRAM, 8)
	AM_RANGE( 0x0000, 0x3fff ) AM_RAMBANK("bank1")
	AM_RANGE( 0x4000, 0x7fff ) AM_RAMBANK("bank2")
    AM_RANGE( 0x8000, 0xbfff ) AM_ROM  // ROM 1
    AM_RANGE( 0xc000, 0xf3ff ) AM_ROM  // ROM 2
    AM_RANGE( 0xf000, 0xf7ff ) AM_RAMBANK("bank3") // CDP1869 / ROM
    AM_RANGE( 0xf800, 0xffff ) AM_RAMBANK("bank4") // CDP1869 / ROM
ADDRESS_MAP_END

static ADDRESS_MAP_START( pecom64_io, AS_IO, 8 )
	AM_RANGE(0x01, 0x01) AM_WRITE(pecom_bank_w)
	AM_RANGE(0x03, 0x03) AM_READ(pecom_keyboard_r)
	AM_RANGE(0x03, 0x07) AM_WRITE(pecom_cdp1869_w)
ADDRESS_MAP_END

/* Input ports */
/* Pecom 64 keyboard layout is as follows

    1!     2"     3#     4$     5%     6&     7'     8(     9)     0     BREAK

   DEL  Q      W      E      R      T      Y      U      I      O      P   ESC

    CAPS    A      S      D      F      G      H      J      K      L   RETURN

  CTRL  ,<     Z      X      C      V      B      N      M      :*     /?   LF

     SHIFT  .>    Down   Left       SPACEBAR       Right    Up      ;+    =-

Being keys distributed on four lines, it makes a bit difficult to accurately remap them
on modern keyboards. Hence, we move by default Up/Down/Left/Right to Cursor Keys and
use LEft/Right Ctrl/Alt keys for the remaining keys. Due to the unnatural emulated keyboard
mappings, this is another situation where natural keyboard comes very handy!          */

static INPUT_CHANGED( ef_w )
{
	cputag_set_input_line(field.machine(), CDP1802_TAG, (int)(FPTR)param, newval);
}

static INPUT_PORTS_START( pecom )
	PORT_START("LINE0")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_COLON) PORT_CHAR(13)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Line Feed") PORT_CODE(KEYCODE_SLASH)

	PORT_START("LINE1")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Esc") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR(UCHAR_MAMEKEY(ESC))
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNUSED ) // Actually this is again / ? - same key connected as on SLASH

	PORT_START("LINE2")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')

	PORT_START("LINE3")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')

	PORT_START("LINE4")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')

	PORT_START("LINE5")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')

	PORT_START("LINE6")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')

	PORT_START("LINE7")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(':') PORT_CHAR('*')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RALT) PORT_CHAR(';') PORT_CHAR('+')

	PORT_START("LINE8")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TILDE) PORT_CHAR(',') PORT_CHAR('<')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR('=') PORT_CHAR('-')

	PORT_START("LINE9")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LALT) PORT_CHAR('.') PORT_CHAR('>')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('/') PORT_CHAR('?')

	PORT_START("LINE10")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('a')

	PORT_START("LINE11")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('b')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('c')

	PORT_START("LINE12")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('e')

	PORT_START("LINE13")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('f')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('g')

	PORT_START("LINE14")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('h')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('i')

	PORT_START("LINE15")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('j')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('k')

	PORT_START("LINE16")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('l')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('m')

	PORT_START("LINE17")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('n')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('o')

	PORT_START("LINE18")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('p')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('q')

	PORT_START("LINE19")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('r')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('s')

	PORT_START("LINE20")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('t')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('u')

	PORT_START("LINE21")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('v')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('w')

	PORT_START("LINE22")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('y')

	PORT_START("LINE23")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('z')
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Sh") PORT_CODE(KEYCODE_DOWN) // sh up

	PORT_START("LINE24")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Dj") PORT_CODE(KEYCODE_LEFT) // dj left
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Cj") PORT_CODE(KEYCODE_RIGHT) // cj right

	PORT_START("LINE25")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Ch") PORT_CODE(KEYCODE_UP)  //ch up
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Del") PORT_CODE(KEYCODE_TAB) PORT_CHAR(UCHAR_MAMEKEY(DEL))

	PORT_START("CNT")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_2) PORT_CHANGED(ef_w, (void*)COSMAC_INPUT_LINE_EF1)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Shift") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_SHIFT_1)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Caps") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) PORT_TOGGLE PORT_CHANGED(ef_w, (void*)COSMAC_INPUT_LINE_EF3)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Break") PORT_CODE(KEYCODE_MINUS) PORT_CHANGED(ef_w, (void*)COSMAC_INPUT_LINE_EF4)
INPUT_PORTS_END

static const cassette_interface pecom_cassette_interface =
{
	cassette_default_formats,
	NULL,
	(cassette_state)(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED),
	NULL,
	NULL
};

/* Machine driver */
static MACHINE_CONFIG_START( pecom64, pecom_state )

    /* basic machine hardware */
	MCFG_CPU_ADD(CDP1802_TAG, COSMAC, CDP1869_DOT_CLK_PAL/3)
	MCFG_CPU_PROGRAM_MAP(pecom64_mem)
	MCFG_CPU_IO_MAP(pecom64_io)
	MCFG_CPU_CONFIG(pecom64_cdp1802_config)

	MCFG_MACHINE_START( pecom )
	MCFG_MACHINE_RESET( pecom )

	// sound and video hardware

	MCFG_FRAGMENT_ADD(pecom_video)

	MCFG_CASSETTE_ADD( CASSETTE_TAG, pecom_cassette_interface )

	/* internal ram */
	MCFG_RAM_ADD(RAM_TAG)
	MCFG_RAM_DEFAULT_SIZE("32K")
	MCFG_RAM_DEFAULT_VALUE(0x00)
MACHINE_CONFIG_END

/* ROM definition */
ROM_START( pecom64 )
	  ROM_REGION( 0x10000, CDP1802_TAG, ROMREGION_ERASEFF )
	  ROM_SYSTEM_BIOS(0, "ver4", "version 4")
	  ROMX_LOAD( "pecom64-1.bin", 0x8000, 0x4000, CRC(9a433b47) SHA1(dadb8c399e0a25a2693e10e42a2d7fc2ea9ad427), ROM_BIOS(1) )
	  ROMX_LOAD( "pecom64-2.bin", 0xc000, 0x4000, CRC(2116cadc) SHA1(03f11055cd221d438a40a41874af8fba0fa116d9), ROM_BIOS(1) )
	  ROM_SYSTEM_BIOS(1, "ver1", "version 1")
	  ROMX_LOAD( "170887-rom1.bin", 0x8000, 0x4000, CRC(43710fb4) SHA1(f84f75061c9ac3e34af93141ecabd3c955881aa2), ROM_BIOS(2) )
	  ROMX_LOAD( "170887-rom2.bin", 0xc000, 0x4000, CRC(d0d34f08) SHA1(7baab17d1e68771b8dcef97d0fffc655beabef28), ROM_BIOS(2) )
ROM_END

/* Driver */

/*    YEAR  NAME   PARENT  COMPAT       MACHINE     INPUT   INIT   COMPANY  FULLNAME      FLAGS */
COMP( 1987, pecom64,     0,      0, 	pecom64,	pecom,	0,     "Ei Nis", "Pecom 64",	0)
