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-rw-r--r--src/mame/drivers/wheelfir.cpp868
1 files changed, 868 insertions, 0 deletions
diff --git a/src/mame/drivers/wheelfir.cpp b/src/mame/drivers/wheelfir.cpp
new file mode 100644
index 00000000000..01fff467b11
--- /dev/null
+++ b/src/mame/drivers/wheelfir.cpp
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+// license:BSD-3-Clause
+// copyright-holders:David Haywood,Tomasz Slanina
+/****************************************************************
+
+Wheels & Fire
+
+driver by
+ David Haywood
+ Tomasz Slanina
+
+
+TODO:
+- sound comms
+- eeprom
+- various gfx size/pos glitches (gaps, extra rows of pixels here and there)
+- real gfx zoom, based on the zoom params, not lookup table
+- apply double buffering (sometimes gfx is displayed at y+256 every other frame (extra bits are currently masked out))
+- fix road/sky (extra bits in the scroll reg. are there two bitmap buffers? )
+- bitmap layer clearing
+- fix wrong coords of sprites rendered into the bitmap layer (intro car)
+- is toggle_bit really a vblank bit ? or somethign else (blitter status ?)
+- implement(and find) layer enable/disable bits
+
+
+
+
+----------------------------------
+Produttore TCH
+N.revisione E133
+
+
+
+CPU
+
+2x MC68HC000FN16
+
+2x TPC1020BFN-084C
+1x BT478KPJ50-615-9132F
+1x S9530AG-ADC0808-CCV
+1x oscillator 32.000000MHz
+1x ST93C46 EEPROM
+
+ROMs
+
+12x TMS27C040
+
+1x GAL16V8QS
+2x GAL22V10
+
+Note
+
+1x JAMMA connector
+1x VGA connector - Used to link 2 PCBs together
+2x trimmer (volume)
+
+
+----
+
+uses a blitter for the gfx, this is not fully understood...
+
+level 5 interrupt = raster interrupt, used for road
+level 3 interrupt = vblank interrupt
+level 1 interrupt = blitter interrupt
+
+
+Blitter data foramt ( offset in words, offset in bytes, offset inside ram data table )
+
+
+ fedcba9876543210
+
+0 0 0
+ --------76543210 dest_x0 bits 0-7
+ 76543210-------- src_x0 bits 0-7
+
+1 2 2
+ --------76543210 dest_x1 bits 0-7
+
+
+
+2 4 4
+ --------76543210 dest_y0 bits 0-7
+ 76543210-------- src_y0 bits 0-7
+3 6 6
+ --------76543210 dest_y1 bits 0-7
+
+4 8
+5 a
+6 c 8
+ ??------???????? image flags (directly copied from image info table, page and ?)
+ --3210---------- image page
+ -------8-------- src_x0 bit 8
+ ------8--------- src_y0 bit 8
+7 e a
+ ????????--?----- flags
+ ---------------X X direction (src?)
+ --------------Y- Y direction (src?)
+ ---------8------ dest_x0 bit 8
+ --------8------- dest_y0 bit 8
+ -----------L---- dest layer
+ ------------??-- unknown bits, set usually when rendering target = bitmap layer
+
+
+8 10 c
+ -------5-------- x scale data1 bit 5
+ ------5--------- y scale data1 bit 5
+ -----5---------- x scale data2 bit 5
+ ----5----------- y scala data2 bit 5
+ ---D------------ x scale >200%
+ --D------------- y scale >200%
+ -x-------------- X direction (dest?)
+ Y--------------- Y direction (dest?)
+ ---------8------ scroll x bit 8
+ --------8------- scroll y bit 8
+ ----------?----- set for road ? buffer num (is there double buffering ? or two bitmap layers?)
+
+9 12 e
+ ---------------H x scale < 50%
+ --------------H- y scale < 50%
+ -------------8-- dest_x1 bit 8
+ ------------8--- dest_y1 bit 8
+
+
+a 14 10
+ ---43210-------- x scale data1 bits 0-4
+ -4-------------- y scale data1 bit 4
+ --------76543210 scroll x of bitmap layer
+
+b 16 12
+ ---43210-------- x scale data2 bits 0-4
+ 10-------------- y scale data1 bits 0-1
+ --------76543210 scroll y of bitmap layer
+c 18 14
+ ---43210-------- y scale data2 bits 0-4
+ 32-------------- y scale data1 bits 2-3
+d 1a
+e 1c
+f 1e
+
+
+
+
+X Scale Table:
+76543210
+
+---ABCDE
+---FGHIJ
+--------
+---K-L-M
+-------N
+
+Y Scale Table:
+76543210
+
+-A------
+DE------
+BC-FGHIJ
+--K-L-M-
+------N-
+
+
+BITS ABCDE = DATA1 (0-31)
+BITS FGHIJ = DATA2 (0-31)
+BIT K - ( scale > 200% ) ? 1 : 0
+BIT L - ( DATA2 != 0) ? 1 : 0 (or DATA2 MSB)
+BIT M - ( DATA1 != 0) ? 1 : 0 (or DATA1 MSB)
+BIT N - ( scale < 50% ) ? 1 : 0
+
+
+pcb linking
+-----------
+
+suspicious code:
+
+
+(write/read (exchange data))
+
+0A535C: 48E7 6080 movem.l D1-D2/A0, -(A7)
+0A5360: 41F9 0078 0000 lea $780000.l, A0
+0A5366: D040 add.w D0, D0
+0A5368: 3181 0000 move.w D1, (A0,D0.w) ; write data
+
+0A536C: 3239 007E 0000 move.w $7e0000.l, D1
+0A5372: 0801 000D btst #$d, D1
+0A5376: 67F4 beq $a536c
+
+0A5378: 3230 0000 move.w (A0,D0.w), D1 ; read data
+0A537C: 0241 00FF andi.w #$ff, D1
+
+(unk., maybe sync or config ?)
+
+0A53C2: 2F08 move.l A0, -(A7)
+0A53C4: 3F01 move.w D1, -(A7)
+0A53C6: 41F9 0078 0000 lea $780000.l, A0
+0A53CC: D040 add.w D0, D0
+0A53CE: 3180 0000 move.w D0, (A0,D0.w) ; write offset
+0A53D2: 3180 0000 move.w D0, (A0,D0.w) ; again
+
+0A53D6: 3239 007E 0000 move.w $7e0000.l, D1
+0A53DC: 0801 000D btst #$d, D1 ; flag test
+0A53E0: 67F4 beq $a53d6
+
+0A53E2: 3030 0000 move.w (A0,D0.w), D0
+0A53E6: 0240 00FF andi.w #$ff, D0
+0A53EA: 321F move.w (A7)+, D1
+0A53EC: 205F movea.l (A7)+, A0
+0A53EE: 4E75 rts
+
+
+*/
+
+
+#include "emu.h"
+#include "machine/eepromser.h"
+#include "cpu/m68000/m68000.h"
+#include "sound/dac.h"
+
+static const int ZOOM_TABLE_SIZE=1<<14;
+static const int NUM_SCANLINES=256-8;
+static const int NUM_VBLANK_LINES=8;
+static const int LAYER_BG=0;
+static const int LAYER_FG=1;
+static const int NUM_COLORS=256;
+
+struct scroll_info
+{
+ INT32 x,y,unkbits;
+};
+
+
+class wheelfir_state : public driver_device
+{
+public:
+ wheelfir_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_subcpu(*this, "subcpu"),
+ m_screen(*this, "screen"),
+ m_palette(*this, "palette") { }
+
+ required_device<cpu_device> m_maincpu;
+ required_device<cpu_device> m_subcpu;
+ required_device<screen_device> m_screen;
+ required_device<palette_device> m_palette;
+
+ INT32 *m_zoom_table;
+ UINT16 *m_blitter_data;
+
+ UINT8 *m_palette_ptr;
+ INT32 m_palpos;
+
+ INT32 m_current_scanline;
+ scroll_info *m_scanlines;
+
+ INT32 m_soundlatch;
+
+ INT32 m_direct_write_x0;
+ INT32 m_direct_write_x1;
+ INT32 m_direct_write_y0;
+ INT32 m_direct_write_y1;
+ INT32 m_direct_write_idx;
+
+ INT32 m_toggle_bit;
+ INT16 m_scanline_cnt;
+
+
+ bitmap_ind16 *m_tmp_bitmap[2];
+
+ INT32 get_scale(INT32 index)
+ {
+ while(index<ZOOM_TABLE_SIZE)
+ {
+ if(m_zoom_table[index]>=0)
+ {
+ return m_zoom_table[index];
+ }
+ ++index;
+ }
+ return 0;
+ }
+ DECLARE_READ16_MEMBER(wheelfir_status_r);
+ DECLARE_WRITE16_MEMBER(wheelfir_scanline_cnt_w);
+ DECLARE_WRITE16_MEMBER(wheelfir_blit_w);
+ DECLARE_WRITE16_MEMBER(pal_reset_pos_w);
+ DECLARE_WRITE16_MEMBER(pal_data_w);
+ DECLARE_WRITE16_MEMBER(wheelfir_7c0000_w);
+ DECLARE_WRITE16_MEMBER(wheelfir_snd_w);
+ DECLARE_READ16_MEMBER(wheelfir_snd_r);
+ DECLARE_WRITE16_MEMBER(coin_cnt_w);
+ DECLARE_DRIVER_INIT(wheelfir);
+ virtual void machine_start();
+ virtual void machine_reset();
+ virtual void video_start();
+ UINT32 screen_update_wheelfir(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ void screen_eof_wheelfir(screen_device &screen, bool state);
+ TIMER_DEVICE_CALLBACK_MEMBER(scanline_timer_callback);
+};
+
+
+READ16_MEMBER(wheelfir_state::wheelfir_status_r)
+{
+/*
+ fedcba9876543210
+ x--------------- vblank ?
+ --x------------- ? must be 1
+ --------------x- ? eeprom
+ ---------------x ? eeprom
+
+*/
+
+ return m_toggle_bit| (machine().rand()&0x2000);
+}
+
+WRITE16_MEMBER(wheelfir_state::wheelfir_scanline_cnt_w)
+{
+ COMBINE_DATA(&m_scanline_cnt);
+}
+
+
+WRITE16_MEMBER(wheelfir_state::wheelfir_blit_w)
+{
+ COMBINE_DATA(&m_blitter_data[offset]);
+
+ if(!ACCESSING_BITS_8_15 && offset==0x6) //LSB only!
+ {
+ int x,y;
+
+
+ int direct_width=m_direct_write_x1-m_direct_write_x0+1;
+ int direct_height=m_direct_write_y1-m_direct_write_y0+1;
+
+ int sixdat = data&0xff;
+
+ if(direct_width>0 && direct_height>0)
+ {
+ x= m_direct_write_idx % direct_width;
+ y = (m_direct_write_idx / direct_width) %direct_height;
+
+ x+=m_direct_write_x0;
+ y+=m_direct_write_y0;
+
+ if(x<512 && y <512)
+ {
+ m_tmp_bitmap[LAYER_BG]->pix16(y, x) = sixdat;
+ }
+ }
+
+ ++m_direct_write_idx;
+
+ return;
+
+ }
+
+ int yscroll=-1;
+ int xscroll=-1;
+
+ if(offset==0x0a && ACCESSING_BITS_0_7)
+ {
+ xscroll = (m_blitter_data[0xa]&0x00ff) | (m_blitter_data[0x8]&0x0040) << 2;
+ }
+
+ if(offset==0x0b && ACCESSING_BITS_0_7)
+ {
+ yscroll = (m_blitter_data[0xb]&0x00ff) | (m_blitter_data[0x8]&0x0080) << 1;
+ }
+
+ if(offset==0x8 && ACCESSING_BITS_0_7)
+ {
+ xscroll = (m_blitter_data[0xa]&0x00ff) | (m_blitter_data[0x8]&0x0040) << 2;
+ yscroll = (m_blitter_data[0xb]&0x00ff) | (m_blitter_data[0x8]&0x0080) << 1;
+ }
+
+ if(xscroll>=0)
+ {
+ int scl=m_current_scanline>=NUM_SCANLINES?0:m_current_scanline;
+ m_scanlines[scl].x=xscroll;
+ m_scanlines[scl].unkbits=m_blitter_data[0x8]&0xff;
+ }
+
+ if(yscroll>=0)
+ {
+ int scl=m_current_scanline>=NUM_SCANLINES?0:m_current_scanline;
+ m_scanlines[scl].y=yscroll;
+ m_scanlines[scl].unkbits=m_blitter_data[0x8]&0xff;
+ }
+
+
+ if(offset==0xf && data==0xffff)
+ {
+ m_maincpu->set_input_line(1, HOLD_LINE);
+
+ {
+ UINT8 *rom = memregion("gfx1")->base();
+
+ int width = m_screen->width();
+ int height = m_screen->height();
+
+ int src_x0=(m_blitter_data[0]>>8)+((m_blitter_data[6]&0x100)?256:0);
+ int src_y0=(m_blitter_data[2]>>8)+((m_blitter_data[6]&0x200)?256:0);
+
+ int dst_x0=(m_blitter_data[0]&0xff)+((m_blitter_data[7]&0x40)?256:0);
+ int dst_y0=(m_blitter_data[2]&0xff)+((m_blitter_data[7]&0x80)?256:0);
+
+ int dst_x1=(m_blitter_data[1]&0xff)+((m_blitter_data[9]&4)?256:0);
+ int dst_y1=(m_blitter_data[3]&0xff)+((m_blitter_data[9]&8)?256:0);
+
+ int x_dst_step=(m_blitter_data[7]&0x1)?1:-1;
+ int y_dst_step=(m_blitter_data[7]&0x2)?1:-1;
+
+ int x_src_step=(m_blitter_data[8]&0x4000)?1:-1;
+ int y_src_step=(m_blitter_data[8]&0x8000)?1:-1;
+
+ int page=((m_blitter_data[6])>>10)*0x40000;
+
+
+ if(page>=0x400000) /* src set to unav. page before direct write to the framebuffer */
+ {
+ m_direct_write_x0=dst_x0;
+ m_direct_write_x1=dst_x1;
+ m_direct_write_y0=dst_y0;
+ m_direct_write_y1=dst_y1;
+ m_direct_write_idx=0;
+
+ }
+
+ if(x_dst_step<0)
+ {
+ if(dst_x0<=dst_x1)
+ {
+ return;
+ }
+
+ }
+ else
+ {
+ if(dst_x0>=dst_x1)
+ {
+ return;
+ }
+
+ }
+
+ if(y_dst_step<0)
+ {
+ if(dst_y0<=dst_y1)
+ {
+ return;
+ }
+ }
+ else
+ {
+ if(dst_y0>=dst_y1)
+ {
+ return;
+ }
+
+ }
+
+
+ //additional checks
+
+ int d1, d2, hflag, dflag, index;
+
+ d1=((m_blitter_data[0x0a]&0x1f00)>>8);
+
+ d2=((m_blitter_data[0x0b]&0x1f00)>>8);
+
+
+ d1|=((m_blitter_data[0x8]&0x100)>>3);
+ d2|=((m_blitter_data[0x8]&0x400)>>5);
+ hflag=(m_blitter_data[0x9]&0x1)?1:0;
+ dflag=(m_blitter_data[0x8]&0x1000)?1:0;
+ index=d1|(d2<<6)|(hflag<<12)|(dflag<<13);
+
+
+ float scale_x=get_scale(index);
+
+ d1=((m_blitter_data[0x0b]&0xc000)>>14) |
+ ((m_blitter_data[0x0c]&0xc000)>>12) |
+ ((m_blitter_data[0x0a]&0x4000)>>10);
+
+ d2=((m_blitter_data[0x0c]&0x1f00)>>8);
+
+
+ d1|=((m_blitter_data[0x8]&0x200)>>4);
+ d2|=((m_blitter_data[0x8]&0x800)>>6);
+
+ hflag=(m_blitter_data[0x9]&0x2)?1:0;
+ dflag=(m_blitter_data[0x8]&0x2000)?1:0;
+ index=d1|(d2<<6)|(hflag<<12)|(dflag<<13);
+
+
+ float scale_y=get_scale(index);
+
+
+ if(scale_x==0 || scale_y==0) return;
+
+
+ float scale_x_step=100.f/scale_x;
+ float scale_y_step=100.f/scale_y;
+
+
+
+ int x,y;
+ float idx_x,idx_y;
+
+ int vpage=LAYER_FG;
+ if(m_blitter_data[0x7]&0x10)
+ {
+ vpage=LAYER_BG;
+/*
+ printf("bg -> %d %d %d %d %d %d @ %x\n",dst_x0,dst_y0, dst_x1,dst_y1, dst_x1-dst_x0, dst_y1-dst_y0,space.device().safe_pc());
+
+ for(int i=0;i<16;++i)
+ {
+ printf("%x = %.4x\n",i,m_blitter_data[i]);
+ }
+
+ printf("\n");
+*/
+ }
+
+ bool endx=false;
+ bool endy=false;
+
+ if(m_blitter_data[0x7]&0x0c)
+ {
+ //???
+ }
+
+ for( x=dst_x0, idx_x=0 ; !endx;x+=x_dst_step, idx_x+=scale_x_step )
+ {
+ endy=false;
+ for( y=dst_y0, idx_y=0 ; !endy;y+=y_dst_step, idx_y+=scale_y_step)
+ {
+ endx=(x==dst_x1);
+ endy=(y==dst_y1);
+
+
+ int xx=src_x0+x_src_step*idx_x;
+ int yy=src_y0+y_src_step*idx_y;
+
+ int address=page+yy*512+xx;
+
+ int pix = rom[address&(0x1000000-1)];
+
+ int screen_x=x;
+ int screen_y=y;
+
+
+ if(page>=0x400000)
+ {
+ //hack for clear
+ if(screen_x >0 && screen_y >0 && screen_x < width && screen_y <height)
+ {
+ // m_tmp_bitmap[vpage]->pix16(screen_y , screen_x ) =0;
+ }
+ }
+ else
+ {
+ screen_y&=0xff;
+
+ if(pix && screen_x >0 && screen_y >0 && screen_x < width && screen_y <height)
+ {
+ m_tmp_bitmap[vpage]->pix16(screen_y , screen_x ) = pix;
+ }
+ }
+ }
+ }
+ }
+ }
+}
+
+void wheelfir_state::video_start()
+{
+ m_tmp_bitmap[0] = auto_bitmap_ind16_alloc(machine(), 512, 512);
+ m_tmp_bitmap[1] = auto_bitmap_ind16_alloc(machine(), 512, 512);
+}
+
+UINT32 wheelfir_state::screen_update_wheelfir(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ bitmap.fill(0, cliprect);
+
+ for(int y=0;y<NUM_SCANLINES;++y)
+ {
+ UINT16 *source = &m_tmp_bitmap[LAYER_BG]->pix16(( (m_scanlines[y].y)&511));
+ UINT16 *dest = &bitmap.pix16(y);
+
+ for (int x=0;x<336;x++)
+ {
+ dest[x] = source[ (x+(m_scanlines[y].x)) &511];
+
+ }
+ }
+
+ copybitmap_trans(bitmap, *m_tmp_bitmap[LAYER_FG], 0, 0, 0, 0, cliprect, 0);
+
+/*
+ {
+ m_tmp_bitmap[LAYER_BG]->fill(0, screen.visible_area());
+
+ }
+*/
+
+ return 0;
+}
+
+void wheelfir_state::screen_eof_wheelfir(screen_device &screen, bool state)
+{
+ // rising edge
+ if (state)
+ {
+ m_tmp_bitmap[LAYER_FG]->fill(0, screen.visible_area());
+ }
+}
+
+
+WRITE16_MEMBER(wheelfir_state::pal_reset_pos_w)
+{
+ m_palpos = 0;
+}
+
+WRITE16_MEMBER(wheelfir_state::pal_data_w)
+{
+ int color=m_palpos/3;
+ m_palette_ptr[m_palpos] = data & 0xff;
+ ++m_palpos;
+
+ m_palpos %=NUM_COLORS*3;
+
+ {
+ int r = m_palette_ptr[color*3];
+ int g = m_palette_ptr[color*3+1];
+ int b = m_palette_ptr[color*3+2];
+ m_palette->set_pen_color(color, rgb_t(r,g,b));
+ }
+
+}
+
+WRITE16_MEMBER(wheelfir_state::wheelfir_7c0000_w)
+{
+ /* seems to be scanline width/2 (used for scanline int timing ? or real width of scanline ?) */
+}
+
+WRITE16_MEMBER(wheelfir_state::wheelfir_snd_w)
+{
+ COMBINE_DATA(&m_soundlatch);
+ m_subcpu->set_input_line(1, HOLD_LINE); /* guess, tested also with periodic interrupts and latch clear*/
+ machine().scheduler().synchronize();
+}
+
+READ16_MEMBER(wheelfir_state::wheelfir_snd_r)
+{
+ return m_soundlatch;
+}
+
+WRITE16_MEMBER(wheelfir_state::coin_cnt_w)
+{
+ /* bits 0/1 coin counters */
+ coin_counter_w(machine(), 0, data & 0x01);
+ coin_counter_w(machine(), 1, data & 0x02);
+}
+
+
+static ADDRESS_MAP_START( wheelfir_main, AS_PROGRAM, 16, wheelfir_state )
+ AM_RANGE(0x000000, 0x0fffff) AM_ROM
+ AM_RANGE(0x200000, 0x20ffff) AM_RAM
+
+ AM_RANGE(0x700000, 0x70001f) AM_WRITE(wheelfir_blit_w)
+ AM_RANGE(0x720000, 0x720001) AM_WRITE(pal_reset_pos_w)
+ AM_RANGE(0x720002, 0x720003) AM_WRITE(pal_data_w)
+ AM_RANGE(0x720004, 0x720005) AM_WRITENOP // always ffff?
+ AM_RANGE(0x740000, 0x740001) AM_WRITE(wheelfir_snd_w)
+ AM_RANGE(0x780000, 0x78000f) AM_READNOP /* net comms ? */
+ AM_RANGE(0x760000, 0x760001) AM_WRITE(coin_cnt_w)
+ AM_RANGE(0x7a0000, 0x7a0001) AM_WRITE(wheelfir_scanline_cnt_w)
+ AM_RANGE(0x7c0000, 0x7c0001) AM_READWRITE(wheelfir_status_r, wheelfir_7c0000_w)
+ AM_RANGE(0x7e0000, 0x7e0001) AM_READ_PORT("P1")
+ AM_RANGE(0x7e0002, 0x7e0003) AM_READ_PORT("P2")
+
+ ADDRESS_MAP_END
+
+
+/* sub is sound cpu? the program roms contain lots of samples */
+static ADDRESS_MAP_START( wheelfir_sub, AS_PROGRAM, 16, wheelfir_state )
+ AM_RANGE(0x000000, 0x0fffff) AM_ROM
+ AM_RANGE(0x200000, 0x20ffff) AM_RAM
+
+ AM_RANGE(0x780000, 0x780001) AM_READ(wheelfir_snd_r)
+
+ AM_RANGE(0x700000, 0x700001) AM_DEVWRITE8("dac1", dac_device, write_unsigned8, 0xff00) //guess for now
+ AM_RANGE(0x740000, 0x740001) AM_DEVWRITE8("dac2", dac_device, write_unsigned8, 0xff00)
+ADDRESS_MAP_END
+
+
+static INPUT_PORTS_START( wheelfir )
+ PORT_START("P1") /* 16bit */
+ PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
+ PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
+ PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1)
+ PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_START1 )
+ PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_START2 )
+ PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_COIN1 )
+ PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_COIN2 )
+ PORT_DIPNAME( 0x1000, 0x1000, "Test / Game?" )
+ PORT_DIPSETTING( 0x1000, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
+ PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_UNUSED ) /* net comm flag ? */
+ PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("P2") /* 16bit */
+ PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
+ PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
+ PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2)
+ PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0xff00, IP_ACTIVE_LOW, IPT_UNUSED )
+INPUT_PORTS_END
+
+TIMER_DEVICE_CALLBACK_MEMBER(wheelfir_state::scanline_timer_callback)
+{
+ machine().scheduler().synchronize();
+ m_current_scanline=param;
+
+ if(m_current_scanline<NUM_SCANLINES)
+ {
+ //visible scanline
+
+ m_toggle_bit = 0x0000;
+
+ --m_scanline_cnt;
+
+ if(m_current_scanline>0)
+ {
+ //copy scanline offset
+ m_scanlines[m_current_scanline].x=(m_scanlines[m_current_scanline-1].x);
+ m_scanlines[m_current_scanline].y=(m_scanlines[m_current_scanline-1].y+1);
+ m_scanlines[m_current_scanline].unkbits=m_scanlines[m_current_scanline-1].unkbits;
+ }
+
+ if(m_scanline_cnt==0) //<=0 ?
+ {
+ m_maincpu->set_input_line(5, HOLD_LINE); // raster IRQ, changes scroll values for road
+ }
+
+ }
+ else
+ {
+ if(m_current_scanline==NUM_SCANLINES) /* vblank */
+ {
+ m_toggle_bit = 0x8000;
+ m_maincpu->set_input_line(3, HOLD_LINE);
+ }
+ }
+}
+
+
+void wheelfir_state::machine_reset()
+{
+}
+
+void wheelfir_state::machine_start()
+{
+ m_zoom_table = auto_alloc_array(machine(), INT32, ZOOM_TABLE_SIZE);
+ m_blitter_data = auto_alloc_array(machine(), UINT16, 16);
+
+ m_scanlines = reinterpret_cast<scroll_info*>(auto_alloc_array(machine(), UINT8, sizeof(scroll_info)*(NUM_SCANLINES+NUM_VBLANK_LINES)));
+ m_palette_ptr = auto_alloc_array(machine(), UINT8, NUM_COLORS*3);
+
+
+ for(int i=0;i<(ZOOM_TABLE_SIZE);++i)
+ {
+ m_zoom_table[i]=-1;
+ }
+
+ UINT16 *ROM = (UINT16 *)memregion("maincpu")->base();
+
+ for(int j=0;j<400;++j)
+ {
+ int i=j<<3;
+ int d1=ROM[0x200+i]&0x1f;
+ int d0=(ROM[0x200+i]>>8)&0x1f;
+
+ d0|=(ROM[0x200+1+i]&1)?0x20:0;
+ d1|=(ROM[0x200+1+i]&4)?0x20:0;
+
+ int hflag=(ROM[0x200+2+i]&0x100)?1:0;
+ int dflag=(ROM[0x200+1+i]&0x10)?1:0;
+
+ int index=d0|(d1<<6)|(hflag<<12)|(dflag<<13);
+ m_zoom_table[index]=j;
+ }
+}
+
+
+static MACHINE_CONFIG_START( wheelfir, wheelfir_state )
+
+ MCFG_CPU_ADD("maincpu", M68000, 32000000/2)
+ MCFG_CPU_PROGRAM_MAP(wheelfir_main)
+
+ MCFG_CPU_ADD("subcpu", M68000, 32000000/2)
+ MCFG_CPU_PROGRAM_MAP(wheelfir_sub)
+ //MCFG_CPU_PERIODIC_INT_DRIVER(wheelfir_state, irq1_line_hold, 256*60)
+
+ MCFG_QUANTUM_TIME(attotime::from_hz(12000))
+
+
+ MCFG_TIMER_DRIVER_ADD_SCANLINE("scan_timer", wheelfir_state, scanline_timer_callback, "screen", 0, 1)
+
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(60)
+ MCFG_SCREEN_SIZE(336, NUM_SCANLINES+NUM_VBLANK_LINES)
+ MCFG_SCREEN_VISIBLE_AREA(0,335, 0, NUM_SCANLINES-1)
+ MCFG_SCREEN_UPDATE_DRIVER(wheelfir_state, screen_update_wheelfir)
+ MCFG_SCREEN_VBLANK_DRIVER(wheelfir_state, screen_eof_wheelfir)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_PALETTE_ADD("palette", NUM_COLORS)
+
+ MCFG_EEPROM_SERIAL_93C46_ADD("eeprom")
+
+
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+
+ MCFG_DAC_ADD("dac1")
+ MCFG_DAC_ADD("dac2")
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+
+MACHINE_CONFIG_END
+
+
+ROM_START( wheelfir )
+ ROM_REGION( 0x100000, "maincpu", 0 ) /* 68000 Code */
+ ROM_LOAD16_BYTE( "tch1.u19", 0x00001, 0x80000, CRC(33bbbc67) SHA1(c2ecc0ab522ee442076ea7b9536aee6e1fad0540) )
+ ROM_LOAD16_BYTE( "tch2.u21", 0x00000, 0x80000, CRC(ed6b9e8a) SHA1(214c5aaf55963a219db33dd5d530492e09ad5e07) )
+
+ ROM_REGION( 0x100000, "subcpu", 0 ) /* 68000 Code + sound samples */
+ ROM_LOAD16_BYTE( "tch3.u83", 0x00001, 0x80000, CRC(43c014a6) SHA1(6c01a08dda204f36e8768795dd5d405576a49140) )
+ ROM_LOAD16_BYTE( "tch11.u65", 0x00000, 0x80000, CRC(fc894b2e) SHA1(ebe6d1adf889731fb6f53b4ce5f09c60e2aefb97) )
+
+ ROM_REGION( 0x1000000, "gfx1", ROMREGION_ERASE00 ) // 512x512 gfx pages
+ ROM_LOAD( "tch4.u52", 0x000000, 0x80000, CRC(fe4bc2c7) SHA1(33a2ef79cb13f9e7e7d513915c6e13c4e7fe0188) )
+ ROM_LOAD( "tch5.u53", 0x080000, 0x80000, CRC(a38b9ca5) SHA1(083c9f700b9df1039fb553e918e205c6d32057ad) )
+ ROM_LOAD( "tch6.u54", 0x100000, 0x80000, CRC(2733ae6b) SHA1(ebd91e123b670159f79be19a552d1ae0c8a0faff) )
+ ROM_LOAD( "tch7.u55", 0x180000, 0x80000, CRC(6d98f27f) SHA1(d39f7f184abce645b9165b64e89e3b5354187eea) )
+ ROM_LOAD( "tch8.u56", 0x200000, 0x80000, CRC(22b661fe) SHA1(b6edf8e1e8b479ee8813502157615f54627dc7c1) )
+ ROM_LOAD( "tch9.u57", 0x280000, 0x80000, CRC(83c66de3) SHA1(50deaf3338d590340b928f891548c47ba8f3ca38) )
+ ROM_LOAD( "tch10.u58",0x300000, 0x80000, CRC(2036ed80) SHA1(910381e2ccdbc2d06f873021d8af02795d22f595) )
+ ROM_LOAD( "tch12.u59",0x380000, 0x80000, CRC(cce2e675) SHA1(f3d8916077b2e057169d0f254005cd959789a3b3) )
+ROM_END
+
+DRIVER_INIT_MEMBER(wheelfir_state,wheelfir)
+{
+ UINT16 *RAM = (UINT16 *)memregion("maincpu")->base();
+ RAM[0xdd3da/2] = 0x4e71; //hack
+}
+
+GAME( 199?, wheelfir, 0, wheelfir, wheelfir, wheelfir_state, wheelfir, ROT0, "TCH", "Wheels & Fire", MACHINE_NOT_WORKING|MACHINE_NO_SOUND )