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Diffstat (limited to 'src/devices/video/jangou_blitter.cpp')
-rw-r--r--src/devices/video/jangou_blitter.cpp170
1 files changed, 100 insertions, 70 deletions
diff --git a/src/devices/video/jangou_blitter.cpp b/src/devices/video/jangou_blitter.cpp
index b5e75a44eff..9f6cc6ddca3 100644
--- a/src/devices/video/jangou_blitter.cpp
+++ b/src/devices/video/jangou_blitter.cpp
@@ -40,6 +40,27 @@ jangou_blitter_device::jangou_blitter_device(const machine_config &mconfig, cons
}
+DEVICE_ADDRESS_MAP_START( blit_v1_regs, 8, jangou_blitter_device )
+ AM_RANGE(0x00, 0x00) AM_WRITE(src_lo_address_w)
+ AM_RANGE(0x01, 0x01) AM_WRITE(src_md_address_w)
+ AM_RANGE(0x02, 0x02) AM_WRITE(x_w)
+ AM_RANGE(0x03, 0x03) AM_WRITE(y_w)
+ AM_RANGE(0x04, 0x04) AM_WRITE(width_w)
+ AM_RANGE(0x05, 0x05) AM_WRITE(height_and_trigger_w)
+ AM_RANGE(0x06, 0x06) AM_WRITE(src_hi_address_w)
+ADDRESS_MAP_END
+
+// Sexy Gal and variants (v2) swaps around upper src address
+DEVICE_ADDRESS_MAP_START( blit_v2_regs, 8, jangou_blitter_device )
+ AM_RANGE(0x00, 0x00) AM_WRITE(src_lo_address_w)
+ AM_RANGE(0x01, 0x01) AM_WRITE(src_md_address_w)
+ AM_RANGE(0x02, 0x02) AM_WRITE(src_hi_address_w)
+ AM_RANGE(0x03, 0x03) AM_WRITE(x_w)
+ AM_RANGE(0x04, 0x04) AM_WRITE(y_w)
+ AM_RANGE(0x05, 0x05) AM_WRITE(width_w)
+ AM_RANGE(0x06, 0x06) AM_WRITE(height_and_trigger_w)
+ADDRESS_MAP_END
+
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
@@ -53,7 +74,11 @@ void jangou_blitter_device::device_start()
m_gfxrommask = devregion->bytes()-1;
save_item(NAME(m_pen_data));
- save_item(NAME(m_blit_data));
+ save_item(NAME(m_x));
+ save_item(NAME(m_y));
+ save_item(NAME(m_width));
+ save_item(NAME(m_height));
+ save_item(NAME(m_src_addr));
save_item(NAME(m_blit_buffer));
}
@@ -64,7 +89,6 @@ void jangou_blitter_device::device_start()
void jangou_blitter_device::device_reset()
{
- memset(m_blit_data, 0, ARRAY_LENGTH(m_blit_data));
memset(m_pen_data, 0, ARRAY_LENGTH(m_pen_data));
m_bltflip = false;
}
@@ -96,83 +120,59 @@ void jangou_blitter_device::plot_gfx_pixel( uint8_t pix, int x, int y )
m_blit_buffer[(y * 256) + (x >> 1)] = (m_blit_buffer[(y * 256) + (x >> 1)] & 0xf0) | (pix & 0x0f);
}
-WRITE8_MEMBER( jangou_blitter_device::process_w )
+void jangou_blitter_device::trigger_write(void)
{
int src, x, y, h, w, flipx;
- m_blit_data[offset] = data;
+ int count = 0;
+ int xcount, ycount;
+
+ w = (m_width & 0xff) + 1;
+ h = (m_height & 0xff) + 1;
+ src = m_src_addr & m_gfxrommask;
+ if(m_src_addr & ~m_gfxrommask)
+ logerror("%s: Warning blit src address = %08x above ROM mask %08x\n",this->tag(),m_src_addr,m_gfxrommask);
+ x = (m_x & 0xff);
+ y = (m_y & 0xff);
+
+ // lowest bit of src controls flipping / draw direction?
+ flipx = (m_src_addr & 1);
+
+ if (!flipx)
+ src += (w * h) - 1;
+ else
+ src -= (w * h) - 1;
- if (offset == 5)
+ for (ycount = 0; ycount < h; ycount++)
{
- int count = 0;
- int xcount, ycount;
-
- w = (m_blit_data[4] & 0xff) + 1;
- h = (m_blit_data[5] & 0xff) + 1;
- src = ((m_blit_data[1] << 8)|(m_blit_data[0] << 0));
- src |= (m_blit_data[6] & 3) << 16;
- x = (m_blit_data[2] & 0xff);
- y = (m_blit_data[3] & 0xff);
-
- #if 0
- if(m_bltflip == true)
- {
- printf("%02x %02x %02x %02x %02x %02x %02x\n", m_blit_data[0], m_blit_data[1], m_blit_data[2],m_blit_data[3], m_blit_data[4], m_blit_data[5],m_blit_data[6]);
- printf("=>");
- for(int i=0;i<0x10;i++)
- printf("%02x ",m_pen_data[i]);
- printf("\n");
- }
- #endif
- // lowest bit of src controls flipping / draw direction?
- flipx = (m_blit_data[0] & 1);
-
- if (!flipx)
- src += (w * h) - 1;
- else
- src -= (w * h) - 1;
-
-
- for (ycount = 0; ycount < h; ycount++)
+ for(xcount = 0; xcount < w; xcount++)
{
- for(xcount = 0; xcount < w; xcount++)
- {
- int drawx = (x + xcount) & 0xff;
- int drawy = (y + ycount) & 0xff;
- uint8_t dat = gfx_nibble(src + count);
- uint8_t cur_pen = m_pen_data[dat & 0x0f];
-
- //dat = cur_pen_lo | (cur_pen_hi << 4);
-
- if ((cur_pen & 0xff) != 0)
- plot_gfx_pixel(cur_pen, drawx, drawy);
-
- if (!flipx)
- count--;
- else
- count++;
- }
+ int drawx = (x + xcount) & 0xff;
+ int drawy = (y + ycount) & 0xff;
+ uint8_t dat = gfx_nibble(src + count);
+ uint8_t cur_pen = m_pen_data[dat & 0x0f];
+ //dat = cur_pen_lo | (cur_pen_hi << 4);
+
+ if ((cur_pen & 0xff) != 0)
+ plot_gfx_pixel(cur_pen, drawx, drawy);
+
+ if (!flipx)
+ count--;
+ else
+ count++;
}
-
- //uint32_t new_src = src + count;
-
- // update source and height after blitter operation
- // TODO: Jangou doesn't agree with this, later HW?
- #if 0
- m_blit_data[0] = new_src & 0xfe;
- m_blit_data[1] = new_src >> 8;
- m_blit_data[5] = 0;
- m_blit_data[6] = new_src >> 16;
- #endif
- m_bltflip = false;
}
-}
-// Sexy Gal swaps around upper src address
-WRITE8_MEMBER( jangou_blitter_device::alt_process_w )
-{
- const uint8_t translate_addr[7] = { 0, 1, 6, 2, 3, 4, 5 };
+ //uint32_t new_src = src + count;
- process_w(space,translate_addr[offset],data);
+ // update source and height after blitter operation
+ // TODO: Jangou doesn't agree with this, later HW?
+ #if 0
+ m_blit_data[0] = new_src & 0xfe;
+ m_blit_data[1] = new_src >> 8;
+ m_blit_data[5] = 0;
+ m_blit_data[6] = new_src >> 16;
+ #endif
+ m_bltflip = false;
}
WRITE8_MEMBER( jangou_blitter_device::vregs_w )
@@ -192,3 +192,33 @@ READ_LINE_MEMBER( jangou_blitter_device::status_r )
{
return false;
}
+
+// data accessors
+
+WRITE8_MEMBER( jangou_blitter_device::x_w ) { m_x = data; }
+WRITE8_MEMBER( jangou_blitter_device::y_w ) { m_y = data; }
+WRITE8_MEMBER( jangou_blitter_device::src_lo_address_w )
+{
+ m_src_addr &= ~0xff;
+ m_src_addr |= data & 0xff;
+}
+WRITE8_MEMBER( jangou_blitter_device::src_md_address_w )
+{
+ m_src_addr &= ~0xff00;
+ m_src_addr |= data << 8;
+}
+WRITE8_MEMBER( jangou_blitter_device::src_hi_address_w )
+{
+ m_src_addr &= ~0xff0000;
+ m_src_addr |= data << 16;
+}
+WRITE8_MEMBER( jangou_blitter_device::width_w )
+{
+ m_width = data;
+}
+WRITE8_MEMBER( jangou_blitter_device::height_and_trigger_w )
+{
+ m_height = data;
+ trigger_write();
+}
+