/******************************************************************************
 *
 *  kaypro.c
 *
 *  Driver for Kaypro 2x
 *
 *  Juergen Buchmueller, July 1998
 *  Benjamin C. W. Sittler, July 1998 (new keyboard)
 *
 ******************************************************************************/

#include "driver.h"
#include "includes/kaypro.h"
#include "devices/basicdsk.h"

static ADDRESS_MAP_START( kaypro_mem , ADDRESS_SPACE_PROGRAM, 8)
    AM_RANGE( 0x0000, 0xffff) AM_RAM
ADDRESS_MAP_END

ADDRESS_MAP_START( kaypro_io , ADDRESS_SPACE_IO, 8)
	ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
	AM_RANGE( BIOS_CONST,  BIOS_CONST)  AM_READWRITE( kaypro_const_r, kaypro_const_w )
	AM_RANGE( BIOS_CONIN,  BIOS_CONIN)  AM_READWRITE( kaypro_conin_r, kaypro_conin_w )
	AM_RANGE( BIOS_CONOUT, BIOS_CONOUT) AM_READWRITE( kaypro_conout_r, kaypro_conout_w )
	AM_RANGE( BIOS_CMD,    BIOS_CMD)    AM_READWRITE( cpm_bios_command_r, cpm_bios_command_w )
ADDRESS_MAP_END

/*
 * The KAYPRO keyboard has roughly the following layout:
 *
 *                                                                  [up] [down] [left] [right]
 *         [ESC] [1!] [2@] [3#] [4$] [5%] [6^] [7&] [8*] [9(] [0)] [-_] [=+] [`~] [BACK SPACE]
 *           [TAB] [qQ] [wW] [eE] [rR] [tT] [yY] [uU] [iI] [oO] [pP] [[{] []}]       [DEL]
 *[CTRL] [CAPS LOCK] [aA] [sS] [dD] [fF] [gG] [hH] [jJ] [kK] [lL] [;:] ['"] [RETURN] [\|]
 *            [SHIFT] [zZ] [xX] [cC] [vV] [bB] [nN] [mM] [,<] [.>] [/?] [SHIFT] [LINE FEED]
 *                      [                 SPACE                     ]
 *
 * [7] [8] [9] [-]
 * [4] [5] [6] [,]
 * [1] [2] [3]
 * [  0  ] [.] [ENTER]
 *
 * Notes on Appearance
 * -------------------
 * The RETURN key is shaped like a backwards "L". The keypad ENTER key is actually
 * oriented vertically, not horizontally. The alpha keys are marked with the uppercase letters
 * only. Other keys with two symbols have the shifted symbol printed above the unshifted symbol.
 * The keypad is actually located to the right of the main keyboard; it is shown separately here
 * as a convenience to users of narrow listing windows. The arrow keys are actually marked with
 * arrow graphics pointing in the appropriate directions. The F and J keys are specially shaped,
 * since they are the "home keys" for touch-typing. The CAPS LOCK key has a build-in red indicator
 * which is lit when CAPS LOCK is pressed once, and extinguished when the key is pressed again.
 *
 * Technical Notes
 * ---------------
 * The keyboard interfaces to the computer using a serial protocol. Modifier keys are handled
 * inside the keyboards, as is the CAPS LOCK key. The arrow keys and the numeric keypad send
 * non-ASCII codes which are not affected by the modifier keys. The remaining keys send the
 * appropriate ASCII values.
 *
 * The keyboard has a built-in buzzer which is activated briefly by a non-modifier keypress,
 * producing a "clicking" sound for user feedback. Additionally, this buzzer can be activated
 * for a longer period by sending a 0x04 byte to the keyboard. This is used by the ROM soft
 * terminal to alert the user in case of a BEL.
 */

INPUT_PORTS_START( kaypro )
    PORT_START /* IN0 */
    PORT_BIT(0xff, 0xff, IPT_UNUSED)

    PORT_START /* KEY ROW 0 */
    PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC)
    PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("1  !") PORT_CODE(KEYCODE_1)
    PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("2  \"") PORT_CODE(KEYCODE_2)
    PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("3  #") PORT_CODE(KEYCODE_3)
    PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("4  $") PORT_CODE(KEYCODE_4)
    PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("5  %") PORT_CODE(KEYCODE_5)
    PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("6  &") PORT_CODE(KEYCODE_6)
    PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("7  '") PORT_CODE(KEYCODE_7)

    PORT_START /* KEY ROW 1 */
    PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("8  *") PORT_CODE(KEYCODE_8)
    PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("9  (") PORT_CODE(KEYCODE_9)
    PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("0  )") PORT_CODE(KEYCODE_0)
    PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("-  _") PORT_CODE(KEYCODE_MINUS)
    PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("=  +") PORT_CODE(KEYCODE_EQUALS)
    PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("`  ~") PORT_CODE(KEYCODE_TILDE)
    PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("BACK SPACE") PORT_CODE(KEYCODE_BACKSPACE)
    PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("TAB") PORT_CODE(KEYCODE_TAB)

    PORT_START /* KEY ROW 2 */
    PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("q  Q") PORT_CODE(KEYCODE_Q)
    PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("w  W") PORT_CODE(KEYCODE_W)
    PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("e  E") PORT_CODE(KEYCODE_E)
    PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("r  R") PORT_CODE(KEYCODE_R)
    PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("t  T") PORT_CODE(KEYCODE_T)
    PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("y  Y") PORT_CODE(KEYCODE_Y)
    PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("u  U") PORT_CODE(KEYCODE_U)
    PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("i  I") PORT_CODE(KEYCODE_I)

    PORT_START /* KEY ROW 3 */
    PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("o  O") PORT_CODE(KEYCODE_O)
    PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("p  P") PORT_CODE(KEYCODE_P)
    PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("[  {") PORT_CODE(KEYCODE_OPENBRACE)
    PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("]  }") PORT_CODE(KEYCODE_CLOSEBRACE)
    PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER)
    PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("DEL") PORT_CODE(KEYCODE_DEL)
    PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL)
    PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("CAPS LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE

    PORT_START /* KEY ROW 4 */
    PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("a  A") PORT_CODE(KEYCODE_A)
    PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("s  S") PORT_CODE(KEYCODE_S)
    PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("d  D") PORT_CODE(KEYCODE_D)
    PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("f  F") PORT_CODE(KEYCODE_F)
    PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("g  G") PORT_CODE(KEYCODE_G)
    PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("h  H") PORT_CODE(KEYCODE_H)
    PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("j  J") PORT_CODE(KEYCODE_J)
    PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("k  K") PORT_CODE(KEYCODE_K)

    PORT_START /* KEY ROW 5 */
    PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("l  L") PORT_CODE(KEYCODE_L)
    PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME(";  :") PORT_CODE(KEYCODE_COLON)
    PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("'  \"") PORT_CODE(KEYCODE_QUOTE)
    PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("\\  |") PORT_CODE(KEYCODE_ASTERISK)

    PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("SHIFT (L)") PORT_CODE(KEYCODE_LSHIFT)
    PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("z  Z") PORT_CODE(KEYCODE_Z)
    PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("x  X") PORT_CODE(KEYCODE_X)
    PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("c  C") PORT_CODE(KEYCODE_C)

    PORT_START /* KEY ROW 6 */
    PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("v  V") PORT_CODE(KEYCODE_V)
    PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("b  B") PORT_CODE(KEYCODE_B)
    PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("n  N") PORT_CODE(KEYCODE_N)
    PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("m  M") PORT_CODE(KEYCODE_M)
    PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME(",  <") PORT_CODE(KEYCODE_COMMA)
    PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME(".  >") PORT_CODE(KEYCODE_STOP)
    PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("/  ?") PORT_CODE(KEYCODE_SLASH)
    PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("SHIFT (R)") PORT_CODE(KEYCODE_RSHIFT)

    PORT_START /* KEY ROW 7 */
    PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("LINE FEED")

    PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE)
    PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("- (KP)") PORT_CODE(KEYCODE_MINUS_PAD)
    PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME(", (KP)") PORT_CODE(KEYCODE_PLUS_PAD)
    PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("ENTER (KP)") PORT_CODE(KEYCODE_ENTER_PAD)
/*  PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME(". (KP)") PORT_CODE(KEYCODE_STOP_PAD) */
    PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("0 (KP)") PORT_CODE(KEYCODE_0_PAD)
    PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("1 (KP)") PORT_CODE(KEYCODE_1_PAD)

    PORT_START /* KEY ROW 8 */
    PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("2 (KP)") PORT_CODE(KEYCODE_2_PAD)
    PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("3 (KP)") PORT_CODE(KEYCODE_3_PAD)
    PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("4 (KP)") PORT_CODE(KEYCODE_4_PAD)
    PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("5 (KP)") PORT_CODE(KEYCODE_5_PAD)
    PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("6 (KP)") PORT_CODE(KEYCODE_6_PAD)
    PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("7 (KP)") PORT_CODE(KEYCODE_7_PAD)
    PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("8 (KP)") PORT_CODE(KEYCODE_8_PAD)
    PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("9 (KP)") PORT_CODE(KEYCODE_9_PAD)

    PORT_START /* KEY ROW 9 */
    PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("UP") PORT_CODE(KEYCODE_UP)
    PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("DOWN") PORT_CODE(KEYCODE_DOWN)
    PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("LEFT") PORT_CODE(KEYCODE_LEFT)
    PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("RIGHT") PORT_CODE(KEYCODE_RIGHT)
    PORT_BIT(0xf0, 0x00, IPT_UNUSED)
INPUT_PORTS_END

#define FW  ((KAYPRO_FONT_W+7)/8)*8
#define FH  KAYPRO_FONT_H

static gfx_layout charlayout =
{
    FW, FH,         /* 8*16 characters */
    4 * 256,        /* 4 * 256 characters */
    1,              /* 1 bits per pixel */
    { 0 },          /* no bitplanes; 1 bit per pixel */
    /* x offsets */
    { 0, 1, 2, 3, 4, 5, 6, 7,
      8, 9,10,11,12,13,14,15,
     16,17,18,19,20,21,22,23,
     24,25,26,27,28,29,30,31 },
    /* y offsets */
    { 0*FW, 1*FW, 2*FW, 3*FW, 4*FW, 5*FW, 6*FW, 7*FW,
      8*FW, 9*FW,10*FW,11*FW,12*FW,13*FW,14*FW,15*FW,
     16*FW,17*FW,18*FW,19*FW,20*FW,21*FW,22*FW,23*FW,
     24*FW,25*FW,26*FW,27*FW,28*FW,29*FW,30*FW,31*FW },
    FW * FH         /* every char takes 16 bytes */
};

static gfx_decode gfxdecodeinfo[] =
{
    { 1, 0, &charlayout, 0, 4},
	{-1}
};   /* end of array */

static unsigned char kaypro_palette[] =
{
      0,  0,  0,    /* black */
      0,240,  0,    /* green */
      0,120,  0,    /* dim green */
      0,240,  0,    /* flashing green */
      0,120,  0,    /* flashing dim green */

    240,  0,  0,    /* just to keep the frontend happy */
      0,  0,240,
    120,120,120,
    240,240,240,
};

static unsigned short kaypro_colortable[] =
{
    0,  1,      /* green on black */
    0,  2,      /* dim green on black */
    0,  3,      /* flashing green on black */
    0,  4,      /* flashing dim green on black */
};


/* Initialise the palette */
static PALETTE_INIT( kaypro )
{
	palette_set_colors(0, kaypro_palette, sizeof(kaypro_palette) / 3);
    memcpy(colortable, kaypro_colortable, sizeof(kaypro_colortable));
}

static MACHINE_DRIVER_START( kaypro )
	/* basic machine hardware */
	MDRV_CPU_ADD_TAG("main", Z80, 4000000)        /* 4 Mhz */
	MDRV_CPU_PROGRAM_MAP(kaypro_mem, 0)
	MDRV_CPU_IO_MAP(kaypro_io, 0)
	MDRV_CPU_VBLANK_INT(kaypro_interrupt, 1)
	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)
	MDRV_INTERLEAVE(4)

	MDRV_MACHINE_INIT( kaypro )
	MDRV_MACHINE_STOP( kaypro )

    /* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_SIZE(80*KAYPRO_FONT_W, 25*KAYPRO_FONT_H)
	MDRV_VISIBLE_AREA(0*KAYPRO_FONT_W, 80*KAYPRO_FONT_W-1, 0*KAYPRO_FONT_H, 25*KAYPRO_FONT_H-1)
	MDRV_GFXDECODE( gfxdecodeinfo )
	MDRV_PALETTE_LENGTH(sizeof(kaypro_palette) / 3)
	MDRV_COLORTABLE_LENGTH(sizeof(kaypro_colortable) / sizeof(kaypro_colortable[0]))
	MDRV_PALETTE_INIT( kaypro )

	MDRV_VIDEO_START( kaypro )
	MDRV_VIDEO_UPDATE( kaypro )
MACHINE_DRIVER_END


ROM_START (kaypro)
    ROM_REGION(0x10000,REGION_CPU1,0) /* 64K for the Z80 */
    /* totally empty :) */

    ROM_REGION(0x04000,REGION_GFX1,0)  /* 4 * 4K font ram */
    ROM_LOAD ("kaypro2x.fnt", 0x0000, 0x1000, CRC(5f72da5b) SHA1(8a597000cce1a7e184abfb7bebcb564c6bf24fb7))

    ROM_REGION(0x01600,REGION_CPU2,0)  /* 5,5K for CCP and BDOS buffer */
    ROM_LOAD ("cpm62k.sys",   0x0000, 0x1600, CRC(d10cd036) SHA1(68c04701711fcb5ac1586eb8f060f3f0e02ba3dd))
ROM_END

static void kaypro_floppy_getinfo(struct IODevice *dev)
{
	/* floppy */
	legacybasicdsk_device_getinfo(dev);
	dev->count = 4;
	dev->file_extensions = "dsk\0";
	dev->load = device_load_cpm_floppy;
}

SYSTEM_CONFIG_START(kaypro)
	CONFIG_DEVICE(kaypro_floppy_getinfo)
SYSTEM_CONFIG_END

/*    YEAR  NAME      PARENT	COMPAT	MACHINE   INPUT     INIT      CONFIG    COMPANY   FULLNAME */
COMP( 1982, kaypro,   0,		0,		kaypro,   kaypro,   kaypro,   kaypro,   "Non Linear Systems",  "Kaypro 2x" )
