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Imported the same implementation of moon war proto's spinner to moon war 2; works much more smoothly now. [Lord Nightmare]

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This commit is contained in:
Jonathan Gevaryahu 2010-03-18 00:01:29 +00:00
parent 22eb7578c4
commit 146d4d1e94
2 changed files with 25 additions and 12 deletions
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29
src/mame/drivers/galaxian.c
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@ -1093,15 +1093,28 @@ static WRITE8_DEVICE_HANDLER( moonwar_port_select_w )
static READ8_DEVICE_HANDLER( moonwar_input_port_0_r )
{
UINT8 sign;
UINT8 delta;
// see http://www.cityofberwyn.com/schematics/stern/MoonWar_opto.tiff for schematic
// I.e. a 74ls161 counts from 0 to 15 which is the absolute number of bars passed on the quadrature
// one difference is it lacks the strobe input (does it?), which if not active causes
// the dial input to go open bus. This is used in moon war 2 to switch between player 1
// and player 2 dials, which is emulated here.
static int lastdialread = -1;
int dialread = (moonwar_port_select ? input_port_read(device->machine, "IN3") : input_port_read(device->machine, "IN4"));
static int dialoutput = 0;
static int direction = 0;
UINT8 ret;
UINT8 buttons = (input_port_read(device->machine,"IN0")&0xe0);
if ((lastdialread - dialread) < 0) direction = 1;
else if ((lastdialread - dialread) > 0) direction = 0;
// note when lastdialread and dialread are the same direction is left alone.
dialoutput += abs(dialread - lastdialread);
dialoutput &= 0xf;
ret= dialoutput | ((direction==1)?0x10:0) | buttons;
delta = (moonwar_port_select ? input_port_read(device->machine, "IN3") : input_port_read(device->machine, "IN4"));
sign = (delta & 0x80) >> 3;
delta &= 0x0f;
return ((input_port_read(device->machine, "IN0") & 0xe0) | delta | sign );
//fprintf(stderr, "dialread: %02x, lastdialread: %02x, dialoutput: %02x, spinner ret is %02x\n", dialread, lastdialread, dialoutput, ret);
lastdialread = dialread;
return ret;
}

8
src/mame/drivers/galdrvr.c
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@ -2645,10 +2645,10 @@ static INPUT_PORTS_START( moonwar )
PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED ) /* output bits */
PORT_START("IN3") /* IN3/4 - dummy ports for the dial */
PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_RESET
PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10)
PORT_START("IN4")
PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_RESET PORT_COCKTAIL
PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_COCKTAIL
INPUT_PORTS_END
/* same as above, but coinage is different */
@ -2668,10 +2668,10 @@ static INPUT_PORTS_START( moonwara )
PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED ) /* output bits */
PORT_START("IN3") /* IN3/4 - dummy ports for the dial */
PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_RESET
PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10)
PORT_START("IN4") /* doesn't actually work due to bug in game code */
PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_RESET PORT_COCKTAIL
PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_COCKTAIL
INPUT_PORTS_END
static INPUT_PORTS_START( tdpgal )