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Diffstat (limited to 'src/mess/video/vc4000.c')
-rw-r--r--src/mess/video/vc4000.c650
1 files changed, 0 insertions, 650 deletions
diff --git a/src/mess/video/vc4000.c b/src/mess/video/vc4000.c
deleted file mode 100644
index d8ba1ca6f30..00000000000
--- a/src/mess/video/vc4000.c
+++ /dev/null
@@ -1,650 +0,0 @@
-// license:???
-// copyright-holders:Peter Trauner, Manfred Schneider, Robbbert
-
-#include "includes/vc4000.h"
-
-
-/*
- emulation of signetics 2636 video/audio device
-
- seams to me like a special microcontroller
- mask programmed
-
- note about mame s2636 emulation:
- less encapsuled
- missing grid, sound generation, retriggered sprites, paddle reading, score display
- not "rasterline" based
- */
-
-#define STICKCENTRE (105)
-#define STICKLOW (20)
-#define STICKHIGH (225)
-
-#define VC4000_END_LINE (269)
-
-
-
-void vc4000_state::video_start()
-{
- int i;
-
- for (i=0;i<0x20; i++)
- {
- m_sprite_collision[i]=0;
- if ((i&3)==3) m_sprite_collision[i]|=0x20;
- if ((i&5)==5) m_sprite_collision[i]|=0x10;
- if ((i&9)==9) m_sprite_collision[i]|=8;
- if ((i&6)==6) m_sprite_collision[i]|=4;
- if ((i&0xa)==0xa) m_sprite_collision[i]|=2;
- if ((i&0xc)==0xc) m_sprite_collision[i]|=1;
- m_background_collision[i]=0;
- if ((i&0x11)==0x11) m_background_collision[i]|=0x80;
- if ((i&0x12)==0x12) m_background_collision[i]|=0x40;
- if ((i&0x14)==0x14) m_background_collision[i]|=0x20;
- if ((i&0x18)==0x18) m_background_collision[i]|=0x10;
- }
-
- m_joy1_x = STICKCENTRE;
- m_joy1_y = STICKCENTRE;
- m_joy2_x = STICKCENTRE;
- m_joy2_y = STICKCENTRE;
-
- memset(&m_video, 0, sizeof(m_video));
- for (i=0; i<3; i++)
- {
- m_video.sprites[i].data = &m_video.reg.d.sprites[i];
- m_video.sprites[i].mask = 1 << i;
- }
- m_video.sprites[3].data = &m_video.reg.d.sprite4;
- m_video.sprites[3].mask = 1 << 3;
-
- m_bitmap = auto_bitmap_ind16_alloc(machine(), m_screen->width(), m_screen->height());
-}
-
-inline UINT8 vc4000_state::vc4000_joystick_return_to_centre(UINT8 joy)
-{
- UINT8 data;
-
- if (joy > (STICKCENTRE+5))
- data=joy-5;
- else
- if (joy < (STICKCENTRE-5))
- data=joy+5;
- else
- data=105;
-
- return data;
-}
-
-READ8_MEMBER( vc4000_state::vc4000_video_r )
-{
- UINT8 data=0;
- if (offset > 0xcf) offset &= 0xcf; // c0-cf is mirrored at d0-df, e0-ef, f0-ff
- switch (offset)
- {
- case 0xca: // Background-sprite collision (bit 7-4) and sprite finished (bit 3-0)
- data |= m_video.background_collision;
- m_video.background_collision=0;
- if (m_video.sprites[3].finished)
- {
- data |= 1;
- m_video.sprites[3].finished = FALSE;
- }
-
- if (m_video.sprites[2].finished)
- {
- data |= 2;
- m_video.sprites[2].finished = FALSE;
- }
- if (m_video.sprites[1].finished)
- {
- data |= 4;
- m_video.sprites[1].finished = FALSE;
- }
- if (m_video.sprites[0].finished)
- {
- data |= 8;
- m_video.sprites[0].finished = FALSE;
- }
- break;
-
- case 0xcb: // VRST-Flag (bit 6) and intersprite collision (bit5-0)
- data = m_video.sprite_collision | (m_video.reg.d.sprite_collision & 0xc0);
- m_video.sprite_collision = 0;
- m_video.reg.d.sprite_collision &= 0xbf;
- break;
-
-#ifndef ANALOG_HACK
- case 0xcc:
- if (!activeS2650_FO)) data = m_io_joy1_x->read();
- else data = m_io_joy1_y->read();
- break;
- case 0xcd:
- if (!activecpu_get_reg(S2650_FO)) data = m_io_joy2_x->read();
- else data = m_io_joy2_y->read();
- break;
-#else
-
- case 0xcc: /* left joystick */
- if (m_config->read()&1)
- { /* paddle */
- if (!m_maincpu->state_int(S2650_FO))
- {
- data = m_joys->read() & 0x03;
- switch (data)
- {
- case 0x01:
- m_joy1_x-=5;
- if (m_joy1_x < STICKLOW) m_joy1_x=STICKLOW;
- break;
- case 0x02:
- m_joy1_x+=5;
- if (m_joy1_x > STICKHIGH) m_joy1_x=STICKHIGH;
- break;
- case 0x00:
- m_joy1_x = vc4000_joystick_return_to_centre(m_joy1_x);
- }
- data = m_joy1_x;
- }
- else
- {
- data = m_joys->read() & 0x0c;
- switch (data)
- {
- case 0x08:
- m_joy1_y-=5;
- if (m_joy1_y < STICKLOW) m_joy1_y=STICKLOW;
- break;
- case 0x04:
- m_joy1_y+=5;
- if (m_joy1_y > STICKHIGH) m_joy1_y=STICKHIGH;
- break;
- // case 0x00:
- // m_joy1_y = vc4000_joystick_return_to_centre(m_joy1_y);
- }
- data = m_joy1_y;
- }
- }
- else
- { /* buttons */
- if (!m_maincpu->state_int(S2650_FO))
- {
- data = m_joys->read() & 0x03;
- switch (data)
- {
- case 0x01:
- m_joy1_x=STICKLOW;
- break;
- case 0x02:
- m_joy1_x=STICKHIGH;
- break;
- default: /* autocentre */
- m_joy1_x=STICKCENTRE;
- }
- data = m_joy1_x;
- }
- else
- {
- data = m_joys->read() & 0x0c;
- switch (data)
- {
- case 0x08:
- m_joy1_y=STICKLOW;
- break;
- case 0x04:
- m_joy1_y=STICKHIGH;
- break;
- default:
- m_joy1_y=STICKCENTRE;
- }
- data = m_joy1_y;
- }
- }
- break;
-
- case 0xcd: /* right joystick */
- if (m_config->read()&1)
- {
- if (!m_maincpu->state_int(S2650_FO))
- {
- data = m_joys->read() & 0x30;
- switch (data)
- {
- case 0x10:
- m_joy2_x-=5;
- if (m_joy2_x < STICKLOW) m_joy2_x=STICKLOW;
- break;
- case 0x20:
- m_joy2_x+=5;
- if (m_joy2_x > STICKHIGH) m_joy2_x=STICKHIGH;
- case 0x00:
- m_joy2_x = vc4000_joystick_return_to_centre(m_joy2_x);
- break;
- }
- data = m_joy2_x;
- }
- else
- {
- data = m_joys->read() & 0xc0;
- switch (data)
- {
- case 0x80:
- m_joy2_y-=5;
- if (m_joy2_y < STICKLOW) m_joy2_y=STICKLOW;
- break;
- case 0x40:
- m_joy2_y+=5;
- if (m_joy2_y > STICKHIGH) m_joy2_y=STICKHIGH;
- break;
- // case 0x00:
- // m_joy2_y = vc4000_joystick_return_to_centre(m_joy2_y);
- }
- data = m_joy2_y;
- }
- }
- else
- {
- if (!m_maincpu->state_int(S2650_FO))
- {
- data = m_joys->read() & 0x30;
- switch (data)
- {
- case 0x10:
- m_joy2_x=STICKLOW;
- break;
- case 0x20:
- m_joy2_x=STICKHIGH;
- break;
- default: /* autocentre */
- m_joy2_x=STICKCENTRE;
- }
- data = m_joy2_x;
- }
- else
- {
- data = m_joys->read() & 0xc0;
- switch (data)
- {
- case 0x80:
- m_joy2_y=STICKLOW;
- break;
- case 0x40:
- m_joy2_y=STICKHIGH;
- break;
- default:
- m_joy2_y=STICKCENTRE;
- }
- data = m_joy2_y;
- }
- }
- break;
-#endif
-
- default:
- data = m_video.reg.data[offset];
- break;
- }
- return data;
-}
-
-WRITE8_MEMBER( vc4000_state::vc4000_video_w )
-{
-// m_video.reg.data[offset]=data;
- if (offset > 0xcf) offset &= 0xcf; // c0-cf is mirrored at d0-df, e0-ef, f0-ff
-
- switch (offset)
- {
- case 0xc0: // Sprite size
- m_video.sprites[0].size=1<<(data&3);
- m_video.sprites[1].size=1<<((data>>2)&3);
- m_video.sprites[2].size=1<<((data>>4)&3);
- m_video.sprites[3].size=1<<((data>>6)&3);
- break;
-
- case 0xc1: // Sprite 1+2 color
- m_video.sprites[0].scolor=((~data>>3)&7);
- m_video.sprites[1].scolor=(~data&7);
- break;
-
- case 0xc2: // Sprite 2+3 color
- m_video.sprites[2].scolor=((~data>>3)&7);
- m_video.sprites[3].scolor=(~data&7);
- break;
-
- case 0xc3: // Score control
- m_video.reg.d.score_control = data;
- break;
-
- case 0xc6: // Background color
- m_video.reg.d.background = data;
- break;
-
- case 0xc7: // Soundregister
- m_video.reg.data[offset] = data;
- m_custom->soundport_w(0, data);
- break;
-
- case 0xc8: // Digits 1 and 2
- m_video.reg.d.bcd[0] = data;
- break;
-
- case 0xc9: // Digits 3 and 4
- m_video.reg.d.bcd[1] = data;
- break;
-
- case 0xca: // Background-sprite collision (bit 7-4) and sprite finished (bit 3-0)
- m_video.reg.data[offset]=data;
- m_video.background_collision=data;
- break;
-
- case 0xcb: // VRST-Flag (bit 6) and intersprite collision (bit5-0)
- m_video.reg.data[offset]=data;
- m_video.sprite_collision=data;
- break;
-
- default:
- m_video.reg.data[offset]=data;
- }
-}
-
-
-READ8_MEMBER( vc4000_state::vc4000_vsync_r )
-{
- return m_video.line >= VC4000_END_LINE ? 0x80 : 0;
-}
-
-static const char led[20][12+1] =
-{
- "aaaabbbbcccc",
- "aaaabbbbcccc",
- "aaaabbbbcccc",
- "aaaabbbbcccc",
- "llll dddd",
- "llll dddd",
- "llll dddd",
- "llll dddd",
- "kkkkmmmmeeee",
- "kkkkmmmmeeee",
- "kkkkmmmmeeee",
- "kkkkmmmmeeee",
- "jjjj ffff",
- "jjjj ffff",
- "jjjj ffff",
- "jjjj ffff",
- "iiiihhhhgggg",
- "iiiihhhhgggg",
- "iiiihhhhgggg",
- "iiiihhhhgggg"
-};
-
-
-void vc4000_state::vc4000_draw_digit(bitmap_ind16 &bitmap, int x, int y, int d, int line)
-{
- static const int digit_to_segment[0x10]={
- 0x0fff, 0x007c, 0x17df, 0x15ff, 0x1c7d, 0x1df7, 0x1ff7, 0x007f, 0x1fff, 0x1dff
- };
-
- int i=line,j;
-
- for (j=0; j<sizeof(led[0])-1; j++)
- {
- if (led[i][j] != ' ' && digit_to_segment[d]&(1<<(led[i][j]-'a')) )
- bitmap.pix16(y+i, x+j) = ((m_video.reg.d.background>>4)&7)^7;
- }
-}
-
-inline void vc4000_state::vc4000_collision_plot(UINT8 *collision, UINT8 data, UINT8 color, int scale)
-{
- int i,j,m;
-
- for (j=0,m=0x80; j<8; j++, m>>=1)
- {
- if (data&m)
- for (i=0; i<scale; i++, collision++) *collision|=color;
- else
- collision+=scale;
- }
-}
-
-
-void vc4000_state::vc4000_sprite_update(bitmap_ind16 &bitmap, UINT8 *collision, SPRITE *This)
-{
- int i,j,m;
-
- if (m_video.line==0)
- {
- This->y=This->data->y1;
- This->state=0;
- This->delay=0;
- This->finished=FALSE;
- }
-
- This->finished_now=FALSE;
-
- if (m_video.line>VC4000_END_LINE) return;
-
- switch (This->state)
- {
- case 0:
- if (m_video.line != This->y + 2) break;
- This->state++;
-
- case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8:case 9:case 10:
-
- vc4000_collision_plot(collision+This->data->x1, This->data->bitmap[This->state-1],This->mask,This->size);
-
- for (j=0,m=0x80; j<8; j++, m>>=1)
- {
- if (This->data->bitmap[This->state-1]&m)
- {
- for (i=0; i<This->size; i++)
- {
- m_objects[This->data->x1 + i + j*This->size] |= This->scolor;
- m_objects[This->data->x1 + i + j*This->size] &= 7;
- }
- }
- }
-
- This->delay++;
-
- if (This->delay>=This->size)
- {
- This->delay=0;
- This->state++;
- }
-
- if (This->state>10)
- {
- This->finished=TRUE;
- This->finished_now=TRUE;
- }
-
- break;
-
- case 11:
- This->y=This->data->y2;
-
- if (This->y==255)
- This->y=0;
- else
- This->y++;
-
- if (This->y>252) break;
-
- This->delay=0;
- This->state++;
-
- case 12:
- if (This->y!=0)
- {
- This->y--;
- break;
- }
- This->state++;
-
- case 13: case 14: case 15: case 16: case 17: case 18: case 19:case 20:case 21:case 22:
-
- vc4000_collision_plot(collision+This->data->x2,This->data->bitmap[This->state-13],This->mask,This->size);
- for (j=0,m=0x80; j<8; j++, m>>=1)
- {
- if (This->data->bitmap[This->state-13]&m)
- {
- for (i=0; i<This->size; i++)
- {
- int offset = This->data->x2 + i + j*This->size;
-
- // clip objects outside the object buffer.
- // someone who knows this hardware should look at
- // it properly.
- if (offset < 256)
- {
- m_objects[offset] |= This->scolor;
- m_objects[offset] &= 7;
- }
- }
- }
- }
- This->delay++;
- if (This->delay<This->size) break;
- This->delay=0;
- This->state++;
- if (This->state<23) break;
- This->finished=TRUE;
- This->finished_now=TRUE;
- This->state=11;
- break;
- }
-}
-
-inline void vc4000_state::vc4000_draw_grid(UINT8 *collision)
-{
- int width = m_screen->width();
- int height = m_screen->height();
- int i, j, m, x, line=m_video.line-20;
- int w, k;
-
- if (m_video.line>=height) return;
-
- m_bitmap->plot_box(0, m_video.line, width, 1, (m_video.reg.d.background)&7);
-
- if (line<0 || line>=200) return;
- if (~m_video.reg.d.background & 8) return;
-
- i=(line/20)*2;
- if (line%20>=2) i++;
-
- k=m_video.reg.d.grid_control[i>>2];
- switch (k>>6) {
- default:
- case 0:case 2: w=1;break;
- case 1: w=2;break;
- case 3: w=4;break;
- }
- switch (i&3) {
- case 0:
- if (k&1) w=8;break;
- case 1:
- if ((line%40)<=10) {
- if (k&2) w=8;
- } else {
- if (k&4) w=8;
- }
- break;
- case 2: if (k&8) w=8;break;
- case 3:
- if ((line%40)<=30) {
- if (k&0x10) w=8;
- } else {
- if (k&0x20) w=8;
- }
- break;
- }
- for (x=30, j=0, m=0x80; j<16; j++, x+=8, m>>=1)
- {
- if (m_video.reg.d.grid[i][j>>3]&m)
- {
- int l;
- for (l=0; l<w; l++) collision[x+l]|=0x10;
- m_bitmap->plot_box(x, m_video.line, w, 1, (m_video.reg.d.background>>4)&7);
- }
- if (j==7) m=0x100;
- }
-}
-
-INTERRUPT_GEN_MEMBER(vc4000_state::vc4000_video_line)
-{
- int x,y,i;
- UINT8 collision[400]={0}; // better alloca or gcc feature of non constant long automatic arrays
- const rectangle &visarea = m_screen->visible_area();
- assert(ARRAY_LENGTH(collision) >= m_screen->width());
-
- m_video.line++;
- if (m_irq_pause) m_irq_pause++;
- if (m_video.line>311) m_video.line=0;
-
- if (m_video.line==0)
- {
- m_video.background_collision=0;
- m_video.sprite_collision=0;
- m_video.reg.d.sprite_collision=0;
-// logerror("begin of frame\n");
- }
-
- if (m_irq_pause>10)
- {
- m_maincpu->set_input_line(0, CLEAR_LINE);
- m_irq_pause = 0;
- }
-
- if (m_video.line <= VC4000_END_LINE)
- {
- vc4000_draw_grid(collision);
-
- /* init object colours */
- for (i=visarea.min_x; i<visarea.max_x; i++) m_objects[i]=8;
-
- /* calculate object colours and OR overlapping object colours */
- vc4000_sprite_update(*m_bitmap, collision, &m_video.sprites[0]);
- vc4000_sprite_update(*m_bitmap, collision, &m_video.sprites[1]);
- vc4000_sprite_update(*m_bitmap, collision, &m_video.sprites[2]);
- vc4000_sprite_update(*m_bitmap, collision, &m_video.sprites[3]);
-
- for (i=visarea.min_x; i<visarea.max_x; i++)
- {
- m_video.sprite_collision|=m_sprite_collision[collision[i]];
- m_video.background_collision|=m_background_collision[collision[i]];
- /* display final object colours */
- if (m_objects[i] < 8)
- m_bitmap->pix16(m_video.line, i) = m_objects[i];
- }
-
- y = m_video.reg.d.score_control&1?200:20;
-
- if ((m_video.line>=y)&&(m_video.line<y+20))
- {
- x = 60;
- vc4000_draw_digit(*m_bitmap, x, y, m_video.reg.d.bcd[0]>>4, m_video.line-y);
- vc4000_draw_digit(*m_bitmap, x+16, y, m_video.reg.d.bcd[0]&0xf, m_video.line-y);
- if (m_video.reg.d.score_control&2) x -= 16;
- vc4000_draw_digit(*m_bitmap, x+48, y, m_video.reg.d.bcd[1]>>4, m_video.line-y);
- vc4000_draw_digit(*m_bitmap, x+64, y, m_video.reg.d.bcd[1]&0xf, m_video.line-y);
- }
- }
- if (m_video.line==VC4000_END_LINE) m_video.reg.d.sprite_collision |=0x40;
-
- if (((m_video.line == VC4000_END_LINE) |
- (m_video.sprites[3].finished_now) |
- (m_video.sprites[2].finished_now) |
- (m_video.sprites[1].finished_now) |
- (m_video.sprites[0].finished_now)) && (!m_irq_pause))
- {
- m_maincpu->set_input_line_and_vector(0, ASSERT_LINE, 3);
- m_irq_pause=1;
- }
-}
-
-UINT32 vc4000_state::screen_update_vc4000(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
-{
- copybitmap(bitmap, *m_bitmap, 0, 0, 0, 0, cliprect);
- return 0;
-}