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peplus.c updates

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* changed the 6845 type to R6545_1 (Rockwell as mentioned in the driver).
* use transparent addressing
* lightpen code now generates a "lightpen_assert" at the right screen position. 
* Completely hooked up 6545 without wrappers.
This commit is contained in:
Couriersud 2008-11-11 22:26:39 +00:00
parent 08f0fa3f6c
commit 7368532498
1 changed files with 46 additions and 78 deletions
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120
src/mame/drivers/peplus.c
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@ -189,9 +189,7 @@ static UINT8 *sd000_ram;
static UINT8 *sf000_ram;
/* Variables used instead of CRTC6845 system */
static UINT8 vid_register = 0;
static UINT8 vid_low = 0;
static UINT8 vid_high = 0;
static UINT16 vid_address = 0;
/* Holds upper video address and palette number */
static UINT8 *palette_ram;
@ -212,6 +210,10 @@ static int sda_dir = 0;
#define CMOS_NVRAM_SIZE 0x2000
#define eeprom_NVRAM_SIZE 0x200 // 4k Bit
/* prototypes */
static MC6845_ON_VSYNC_CHANGED(crtc_vsync);
static MC6845_ON_UPDATE_ADDR_CHANGED(crtc_addr);
static const mc6845_interface mc6845_intf =
{
"main", /* screen we are acting on */
@ -222,7 +224,8 @@ static const mc6845_interface mc6845_intf =
NULL, /* after pixel update callback */
NULL, /* callback for display state changes */
NULL, /* HSYNC callback */
NULL /* VSYNC callback */
crtc_vsync, /* VSYNC callback */
crtc_addr /* update address callback */
};
/*****************
@ -289,51 +292,55 @@ static WRITE8_HANDLER( peplus_bgcolor_w )
The current CRTC6845 driver does not support these
additional registers (R18, R19, R31)
*/
static MC6845_ON_UPDATE_ADDR_CHANGED(crtc_addr)
{
vid_address = address;
}
static WRITE8_DEVICE_HANDLER( peplus_crtc_mode_w )
{
/* Mode Control - Register 8 */
/* Sets CRT to Transparent Memory Addressing Mode */
/* Reset timing logic */
}
static WRITE8_DEVICE_HANDLER( peplus_crtc_register_w )
static TIMER_CALLBACK(assert_lp_cb)
{
vid_register = data;
mc6845_address_w(device, offset, data);
mc6845_assert_light_pen_input((const device_config *) ptr);
}
static WRITE8_DEVICE_HANDLER( peplus_crtc_address_w )
static void handle_lightpen( const device_config *device )
{
switch(vid_register) {
case 0x12: /* Update Address High */
vid_high = data & 0x3f;
break;
case 0x13: /* Update Address Low */
vid_low = data;
break;
int x_val = input_port_read_safe(device->machine, "TOUCH_X",0x00);
int y_val = input_port_read_safe(device->machine, "TOUCH_Y",0x00);
const rectangle *vis_area = video_screen_get_visible_area(device->machine->primary_screen);
int xt, yt;
xt = x_val * (vis_area->max_x - vis_area->min_x) / 1024 + vis_area->min_x;
yt = y_val * (vis_area->max_y - vis_area->min_y) / 1024 + vis_area->min_y;
timer_set(video_screen_get_time_until_pos(device->machine->primary_screen, yt, xt), (void *) device, 0, assert_lp_cb);
}
mc6845_register_w(device, offset, data);
static MC6845_ON_VSYNC_CHANGED(crtc_vsync)
{
cputag_set_input_line(device->machine, "main", 0, vsync ? ASSERT_LINE : CLEAR_LINE);
handle_lightpen(device);
}
static WRITE8_DEVICE_HANDLER( peplus_crtc_display_w )
{
UINT16 vid_address = (vid_high<<8) | vid_low;
videoram[vid_address] = data;
palette_ram[vid_address] = io_port[1];
tilemap_mark_tile_dirty(bg_tilemap, vid_address);
/* Transparent Memory Addressing increments the update address register */
if (vid_low == 0xff) {
vid_high++;
}
vid_low++;
/* An access here triggers a device read !*/
(void) mc6845_register_r(device, 0);
}
static WRITE8_HANDLER( peplus_io_w )
{
if (offset == 2)
cputag_set_input_line(machine, "main", 0, CLEAR_LINE);
io_port[offset] = data;
}
@ -429,42 +436,6 @@ static WRITE8_HANDLER(i2c_nvram_w)
* Read Handlers *
****************/
static READ8_DEVICE_HANDLER( peplus_crtc_display_r )
{
UINT16 vid_address = ((vid_high<<8) | vid_low) + 1;
vid_high = (vid_address>>8) & 0x3f;
vid_low = vid_address& 0xff;
return 0x00;
}
static READ8_DEVICE_HANDLER( peplus_crtc_lpen1_r )
{
return mc6845_status_r(device, offset);
//return 0x40;
}
static READ8_DEVICE_HANDLER( peplus_crtc_lpen2_r )
{
UINT8 ret_val = 0x00;
UINT8 x_val = input_port_read_safe(device->machine, "TOUCH_X",0x00);
UINT8 y_val = (0x19 - input_port_read_safe(device->machine, "TOUCH_Y",0x00));
UINT16 t_val = y_val * 0x28 + (x_val+1);
switch(vid_register) {
case 0x10: /* Light Pen Address High */
ret_val = (t_val >> 8) & 0x3f;
break;
case 0x11: /* Light Pen Address Low */
ret_val = t_val & 0xff;
break;
default:
ret_val = mc6845_register_r(device, offset);
}
return ret_val;
}
static READ8_HANDLER( peplus_io_r )
{
return io_port[offset];
@ -730,10 +701,10 @@ static ADDRESS_MAP_START( peplus_iomap, ADDRESS_SPACE_IO, 8 )
AM_RANGE(0x0000, 0x1fff) AM_READWRITE(peplus_cmos_r, peplus_cmos_w) AM_BASE(&cmos_ram)
// CRT Controller
AM_RANGE(0x2008, 0x2008) AM_DEVWRITE(MC6845, "crtc", peplus_crtc_mode_w)
AM_RANGE(0x2080, 0x2080) AM_DEVREADWRITE(MC6845, "crtc", peplus_crtc_lpen1_r, peplus_crtc_register_w)
AM_RANGE(0x2081, 0x2081) AM_DEVREADWRITE(MC6845, "crtc", peplus_crtc_lpen2_r, peplus_crtc_address_w)
AM_RANGE(0x2083, 0x2083) AM_DEVREADWRITE(MC6845, "crtc", peplus_crtc_display_r, peplus_crtc_display_w)
AM_RANGE(0x2008, 0x2008) AM_DEVWRITE(R6545_1, "crtc", peplus_crtc_mode_w)
AM_RANGE(0x2080, 0x2080) AM_DEVREADWRITE(R6545_1, "crtc", mc6845_status_r, mc6845_address_w)
AM_RANGE(0x2081, 0x2081) AM_DEVREADWRITE(R6545_1, "crtc", mc6845_register_r, mc6845_register_w)
AM_RANGE(0x2083, 0x2083) AM_DEVREADWRITE(R6545_1, "crtc", mc6845_register_r, peplus_crtc_display_w)
// Superboard Data
AM_RANGE(0x3000, 0x3fff) AM_READWRITE(peplus_s3000_r, peplus_s3000_w) AM_BASE(&s3000_ram)
@ -930,13 +901,13 @@ static INPUT_PORTS_START( peplus_keno )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_BUTTON15 ) PORT_NAME("Bill Acceptor") PORT_CODE(KEYCODE_U)
PORT_START("TOUCH_X")
PORT_BIT( 0xff, 0x08, IPT_LIGHTGUN_X ) PORT_MINMAX(0x00, 0x28) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(13)
PORT_BIT( 0xffff, 0x200, IPT_LIGHTGUN_X ) PORT_MINMAX(0x00, 1024) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(13)
PORT_START("TOUCH_Y")
PORT_BIT( 0xff, 0x08, IPT_LIGHTGUN_Y ) PORT_MINMAX(0x00, 0x19) PORT_CROSSHAIR(Y, -1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(13)
PORT_BIT( 0xffff, 0x200, IPT_LIGHTGUN_Y ) PORT_MINMAX(0x00, 1024) PORT_CROSSHAIR(Y, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(13)
PORT_START("IN0")
PORT_BIT( 0x07, IP_ACTIVE_LOW, IPT_SPECIAL ) PORT_CUSTOM(peplus_input_r, "IN_BANK1")
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Light Pen") PORT_CODE(KEYCODE_A)
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_NAME("Light Pen") PORT_CODE(KEYCODE_A)
PORT_BIT( 0x70, IP_ACTIVE_LOW, IPT_SPECIAL ) PORT_CUSTOM(peplus_input_r, "IN_BANK2")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
INPUT_PORTS_END
@ -1019,9 +990,7 @@ static MACHINE_DRIVER_START( peplus )
// basic machine hardware
MDRV_CPU_ADD("main", I80C32, CPU_CLOCK)
MDRV_CPU_PROGRAM_MAP(peplus_map, 0)
//MDRV_CPU_DATA_MAP(peplus_datamap, 0)
MDRV_CPU_IO_MAP(peplus_iomap, 0)
MDRV_CPU_VBLANK_INT("main", irq0_line_assert)
MDRV_MACHINE_RESET(peplus)
MDRV_NVRAM_HANDLER(peplus)
@ -1029,8 +998,7 @@ static MACHINE_DRIVER_START( peplus )
// video hardware
MDRV_SCREEN_ADD("main", RASTER)
MDRV_SCREEN_REFRESH_RATE(30)
MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
MDRV_SCREEN_REFRESH_RATE(60)
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MDRV_SCREEN_SIZE((52+1)*8, (31+1)*8)
MDRV_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 0*8, 25*8-1)
@ -1038,7 +1006,7 @@ static MACHINE_DRIVER_START( peplus )
MDRV_GFXDECODE(peplus)
MDRV_PALETTE_LENGTH(16*16)
MDRV_DEVICE_ADD("crtc", MC6845)
MDRV_DEVICE_ADD("crtc", R6545_1)
MDRV_DEVICE_CONFIG(mc6845_intf)
MDRV_PALETTE_INIT(peplus)