/*************************************************************************** Intel SDK-85 09/12/2009 Skeleton driver. 22/06/2011 Working [Robbbert] This is an evaluation kit for the 8085 cpu. There is no speaker or storage facility in the standard kit. Download the User Manual to get the operating procedures. An example is Press SUBST key, enter an address, press NEXT key, enter data, then press NEXT to increment the address. ToDo: - Artwork ****************************************************************************/ #include "emu.h" #include "cpu/i8085/i8085.h" #include "machine/i8279.h" #include "sdk85.lh" class sdk85_state : public driver_device { public: sdk85_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) { } DECLARE_WRITE8_MEMBER(scanlines_w); DECLARE_WRITE8_MEMBER(digit_w); DECLARE_READ8_MEMBER(kbd_r); UINT8 m_digit; }; static ADDRESS_MAP_START(sdk85_mem, AS_PROGRAM, 8, sdk85_state) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x0000, 0x07ff) AM_ROM // Monitor rom (A14) AM_RANGE(0x0800, 0x0fff) AM_ROM // Expansion rom (A15) AM_RANGE(0x1800, 0x1800) AM_DEVREADWRITE("i8279", i8279_device, data_r, data_w ) AM_RANGE(0x1900, 0x1900) AM_DEVREADWRITE("i8279", i8279_device, status_r, cmd_w) //AM_RANGE(0x1800, 0x1fff) AM_RAM // i8279 (A13) AM_RANGE(0x2000, 0x27ff) AM_RAM // i8155 (A16) AM_RANGE(0x2800, 0x2fff) AM_RAM // i8155 (A17) ADDRESS_MAP_END static ADDRESS_MAP_START(sdk85_io, AS_IO, 8, sdk85_state) ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_END /* Input ports */ static INPUT_PORTS_START( sdk85 ) PORT_START("X0") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_START("X1") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_START("X2") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("EXEC") PORT_CODE(KEYCODE_Q) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("NEXT") PORT_CODE(KEYCODE_UP) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("GO") PORT_CODE(KEYCODE_R) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SUBST") PORT_CODE(KEYCODE_T) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("EXAM") PORT_CODE(KEYCODE_Y) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SINGLE") PORT_CODE(KEYCODE_U) PORT_BIT(0xC0, IP_ACTIVE_LOW, IPT_UNUSED) INPUT_PORTS_END WRITE8_MEMBER( sdk85_state::scanlines_w ) { m_digit = data; } WRITE8_MEMBER( sdk85_state::digit_w ) { if (m_digit < 6) output_set_digit_value(m_digit, BITSWAP8(data, 3, 2, 1, 0, 7, 6, 5, 4)^0xff); } READ8_MEMBER( sdk85_state::kbd_r ) { UINT8 data = 0xff; if (m_digit < 3) { char kbdrow[6]; sprintf(kbdrow,"X%X",m_digit); data = ioport(kbdrow)->read(); } return data; } static I8279_INTERFACE( sdk85_intf ) { DEVCB_CPU_INPUT_LINE("maincpu", I8085_RST55_LINE), // irq DEVCB_DRIVER_MEMBER(sdk85_state, scanlines_w), // scan SL lines DEVCB_DRIVER_MEMBER(sdk85_state, digit_w), // display A&B DEVCB_NULL, // BD DEVCB_DRIVER_MEMBER(sdk85_state, kbd_r), // kbd RL lines DEVCB_LINE_VCC, // Shift key DEVCB_LINE_VCC }; static MACHINE_CONFIG_START( sdk85, sdk85_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", I8085A, XTAL_2MHz) MCFG_CPU_PROGRAM_MAP(sdk85_mem) MCFG_CPU_IO_MAP(sdk85_io) /* video hardware */ MCFG_DEFAULT_LAYOUT(layout_sdk85) /* Devices */ MCFG_I8279_ADD("i8279", 3100000, sdk85_intf) // based on divider MACHINE_CONFIG_END /* ROM definition */ ROM_START( sdk85 ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD( "sdk85.a14", 0x0000, 0x0800, CRC(9d5a983f) SHA1(54e218560fbec009ac3de5cfb64b920241ef2eeb)) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ COMP( 1977, sdk85, 0, 0, sdk85, sdk85, driver_device, 0, "Intel", "SDK-85", GAME_NO_SOUND_HW)