Index: src/mess/drivers/mc1000.c
===================================================================
--- src/mess/drivers/mc1000.c (revision 9475)
+++ src/mess/drivers/mc1000.c (working copy)
@@ -164,22 +164,39 @@
/* Input Ports */
static INPUT_PORTS_START( mc1000 )
+ PORT_START("JOY0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) /* = '@' */
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2) /* = 'H' */
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2) /* = 'P' */
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2) /* = 'X' */
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) /* = '0' */
+ PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("JOY1")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) /* = 'I' */
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) /* = 'Q' */
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) /* = 'Y' */
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) /* = '1' */
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) /* = '9' */
+ PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
+
PORT_START("ROW0")
- PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('@')
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2) PORT_CODE(KEYCODE_H) PORT_CHAR('H')
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2) PORT_CODE(KEYCODE_P) PORT_CHAR('P')
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2) PORT_CODE(KEYCODE_X) PORT_CHAR('X')
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('@')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('P')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('X')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("ROW1")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A')
- PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_CODE(KEYCODE_I) PORT_CHAR('I')
- PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q')
- PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y')
- PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
- PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('I')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("ROW2")
@@ -238,7 +255,7 @@
PORT_START("MODIFIERS")
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
- PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) PORT_CHAR(UCHAR_MAMEKEY(RCONTROL))
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_MAMEKEY(RCONTROL))
PORT_INCLUDE( m6847_artifacting )
INPUT_PORTS_END
@@ -294,8 +311,10 @@
UINT8 data = 0xff;
- if (!BIT(state->keylatch, 0)) data &= input_port_read(device->machine, "ROW0");
- if (!BIT(state->keylatch, 1)) data &= input_port_read(device->machine, "ROW1");
+ if (!BIT(state->keylatch, 0)) data &= input_port_read(device->machine, "ROW0") &
+ input_port_read(device->machine, "JOY0");
+ if (!BIT(state->keylatch, 1)) data &= input_port_read(device->machine, "ROW1") &
+ input_port_read(device->machine, "JOY1");
if (!BIT(state->keylatch, 2)) data &= input_port_read(device->machine, "ROW2");
if (!BIT(state->keylatch, 3)) data &= input_port_read(device->machine, "ROW3");
if (!BIT(state->keylatch, 4)) data &= input_port_read(device->machine, "ROW4");
@@ -378,20 +397,53 @@
/* Machine Driver */
+/*
+
+ Interrupt generator:
+ NE555 chip in astable circuit.
+
+ +---------*---*---o V+
+ | | |
+ +-+ | |
+ | |309K | |
+ | |R17 |8 |4
+ +-+ +-------+
+ | 7| |3
+ *-------| |-------> /INT (Z80)
+ | | |
+ | | |
+ +-+R16 2| IC 28 |
+ | |1K +--| |
+ | | | | 555 |
+ +-+ | | |
+ | | 6| |5
+ *----*�-| |---+
+ | | | |
+ ---C30 +-------+ ---C29
+ ---103 |1 ---103
+ _|_ _|_ _|_
+ /// /// ///
+
+ Calculated properties:
+
+ * 99.74489795918367 Duty Cycle Percentage
+ * 368.1126130105722 Frequency in Hertz
+ * 0.00000693 Seconds Low
+ * 0.0027096299999999998 Seconds High
+
+ */
+
+#define MC1000_NE555_FREQ (368) /* Hz */
+#define MC1000_NE555_DUTY_CYCLE (99.745) /* % */
+
static TIMER_DEVICE_CALLBACK( ne555_tick )
{
mc1000_state *state = timer.machine->driver_data<mc1000_state>();
- if (state->ne555_int == ASSERT_LINE)
- {
- state->ne555_int = CLEAR_LINE;
- }
- else
- {
- state->ne555_int = ASSERT_LINE;
- }
+ // (state->ne555_int not needed anymore and can be done with?)
+ state->ne555_int = param;
- cputag_set_input_line(timer.machine, Z80_TAG, INPUT_LINE_IRQ0, state->ne555_int);
+ cputag_set_input_line(timer.machine, Z80_TAG, INPUT_LINE_IRQ0, param);
}
static const cassette_config mc1000_cassette_config =
@@ -421,28 +473,34 @@
static MACHINE_CONFIG_START( mc1000, mc1000_state )
/* basic machine hardware */
- MDRV_CPU_ADD(Z80_TAG, Z80, 3579545)
- MDRV_CPU_PROGRAM_MAP(mc1000_mem)
- MDRV_CPU_IO_MAP(mc1000_io)
+ MDRV_CPU_ADD(Z80_TAG, Z80, 3579545)
+ MDRV_CPU_PROGRAM_MAP(mc1000_mem)
+ MDRV_CPU_IO_MAP(mc1000_io)
- MDRV_MACHINE_START(mc1000)
- MDRV_MACHINE_RESET(mc1000)
+ MDRV_MACHINE_START(mc1000)
+ MDRV_MACHINE_RESET(mc1000)
- MDRV_TIMER_ADD_PERIODIC("ne555", ne555_tick, HZ(60))
+ /* timers */
+ MDRV_TIMER_ADD_PERIODIC("ne555clear", ne555_tick, HZ(MC1000_NE555_FREQ))
+ MDRV_TIMER_PARAM(CLEAR_LINE)
- /* video hardware */
- MDRV_SCREEN_ADD(SCREEN_TAG, RASTER)
- MDRV_SCREEN_REFRESH_RATE(M6847_NTSC_FRAMES_PER_SECOND)
- MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
- MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB32)
+ MDRV_TIMER_ADD_PERIODIC("ne555assert", ne555_tick, HZ(MC1000_NE555_FREQ))
+ MDRV_TIMER_START_DELAY(HZ(MC1000_NE555_FREQ * 100 / MC1000_NE555_DUTY_CYCLE))
+ MDRV_TIMER_PARAM(ASSERT_LINE)
+
+ /* video hardware */
+ MDRV_SCREEN_ADD(SCREEN_TAG, RASTER)
+ MDRV_SCREEN_REFRESH_RATE(M6847_NTSC_FRAMES_PER_SECOND)
+ MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+ MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB32)
MDRV_SCREEN_SIZE(320, 25+192+26)
MDRV_SCREEN_VISIBLE_AREA(0, 319, 1, 239)
- MDRV_PALETTE_LENGTH(16)
+ MDRV_PALETTE_LENGTH(16)
- MDRV_VIDEO_UPDATE(mc1000)
+ MDRV_VIDEO_UPDATE(mc1000)
- MDRV_MC6847_ADD(MC6847_TAG, mc1000_mc6847_intf)
- MDRV_MC6847_TYPE(M6847_VERSION_ORIGINAL_NTSC)
+ MDRV_MC6847_ADD(MC6847_TAG, mc1000_mc6847_intf)
+ MDRV_MC6847_TYPE(M6847_VERSION_ORIGINAL_NTSC)
MDRV_MC6847_CHAR_ROM(mc1000_get_char_rom)
/* sound hardware */
