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Updated mpatrol to use resnet for colors.
This commit is contained in:
Aaron Giles
parent
7f838521bf
commit
a1e1f436b4
1 changed files with 91 additions and 92 deletions
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@ -6,6 +6,7 @@
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#include "driver.h"
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#include "m52.h"
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#include "video/resnet.h"
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#define BGHEIGHT 64
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@ -18,130 +19,75 @@ static UINT8 bgcontrol;
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static tilemap* bg_tilemap;
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/***************************************************************************
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/*************************************
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*
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* Palette configuration
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*
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*************************************/
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Convert the color PROMs into a more useable format.
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Moon Patrol has one 256x8 character palette PROM, one 32x8 background
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palette PROM, one 32x8 sprite palette PROM and one 256x4 sprite lookup
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table PROM.
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The character and background palette PROMs are connected to the RGB output
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this way:
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bit 7 -- 220 ohm resistor -- BLUE
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-- 470 ohm resistor -- BLUE
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-- 220 ohm resistor -- GREEN
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-- 470 ohm resistor -- GREEN
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-- 1 kohm resistor -- GREEN
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-- 220 ohm resistor -- RED
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-- 470 ohm resistor -- RED
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bit 0 -- 1 kohm resistor -- RED
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The sprite palette PROM is connected to the RGB output this way. Note that
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RED and BLUE are swapped wrt the usual configuration.
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bit 7 -- 220 ohm resistor -- RED
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-- 470 ohm resistor -- RED
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-- 220 ohm resistor -- GREEN
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-- 470 ohm resistor -- GREEN
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-- 1 kohm resistor -- GREEN
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-- 220 ohm resistor -- BLUE
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-- 470 ohm resistor -- BLUE
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bit 0 -- 1 kohm resistor -- BLUE
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***************************************************************************/
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PALETTE_INIT( m52 )
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{
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static const int resistances_3[3] = { 1000, 470, 220 };
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static const int resistances_2[2] = { 470, 220 };
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double weights_r[3], weights_g[3], weights_b[3];
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int i;
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machine->colortable = colortable_alloc(machine, 512+32+32);
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/* compute palette information for characters/backgrounds */
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compute_resistor_weights(0, 255, -1.0,
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3, resistances_3, weights_r, 0, 0,
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3, resistances_3, weights_g, 0, 0,
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2, resistances_2, weights_b, 0, 0);
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/* character palette */
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for (i = 0;i < 512;i++)
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{
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int bit0,bit1,bit2,r,g,b;
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/* red component */
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bit0 = (*color_prom >> 0) & 0x01;
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bit1 = (*color_prom >> 1) & 0x01;
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bit2 = (*color_prom >> 2) & 0x01;
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r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
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/* green component */
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bit0 = (*color_prom >> 3) & 0x01;
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bit1 = (*color_prom >> 4) & 0x01;
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bit2 = (*color_prom >> 5) & 0x01;
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g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
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/* blue component */
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bit0 = 0;
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bit1 = (*color_prom >> 6) & 0x01;
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bit2 = (*color_prom >> 7) & 0x01;
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b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
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UINT8 promval = color_prom[i];
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int r = combine_3_weights(weights_r, BIT(promval,0), BIT(promval,1), BIT(promval,2));
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int g = combine_3_weights(weights_g, BIT(promval,3), BIT(promval,4), BIT(promval,5));
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int b = combine_2_weights(weights_b, BIT(promval,6), BIT(promval,7));
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colortable_palette_set_color(machine->colortable,i,MAKE_RGB(r,g,b));
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colortable_entry_set_value(machine->colortable,i,i);
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color_prom++;
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}
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/* background palette */
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for (i = 0;i < 32;i++)
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{
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int bit0,bit1,bit2,r,g,b;
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/* red component */
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bit0 = (*color_prom >> 0) & 0x01;
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bit1 = (*color_prom >> 1) & 0x01;
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bit2 = (*color_prom >> 2) & 0x01;
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r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
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/* green component */
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bit0 = (*color_prom >> 3) & 0x01;
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bit1 = (*color_prom >> 4) & 0x01;
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bit2 = (*color_prom >> 5) & 0x01;
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g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
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/* blue component */
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bit0 = 0;
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bit1 = (*color_prom >> 6) & 0x01;
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bit2 = (*color_prom >> 7) & 0x01;
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b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
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UINT8 promval = color_prom[512+i];
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int r = combine_3_weights(weights_r, BIT(promval,0), BIT(promval,1), BIT(promval,2));
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int g = combine_3_weights(weights_g, BIT(promval,3), BIT(promval,4), BIT(promval,5));
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int b = combine_2_weights(weights_b, BIT(promval,6), BIT(promval,7));
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colortable_palette_set_color(machine->colortable,i+512,MAKE_RGB(r,g,b));
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color_prom++;
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}
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/* color_prom now points to the beginning of the sprite palette */
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/* compute palette information for sprites */
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compute_resistor_weights(0, 255, -1.0,
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2, resistances_2, weights_r, 470, 0,
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3, resistances_3, weights_g, 470, 0,
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3, resistances_3, weights_b, 470, 0);
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/* sprite palette */
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for (i = 0;i < 32;i++)
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{
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int bit0,bit1,bit2,r,g,b;
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/* red component */
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bit0 = 0;
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bit1 = (*color_prom >> 6) & 0x01;
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bit2 = (*color_prom >> 7) & 0x01;
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r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
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/* green component */
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bit0 = (*color_prom >> 3) & 0x01;
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bit1 = (*color_prom >> 4) & 0x01;
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bit2 = (*color_prom >> 5) & 0x01;
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g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
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/* blue component */
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bit0 = (*color_prom >> 0) & 0x01;
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bit1 = (*color_prom >> 1) & 0x01;
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bit2 = (*color_prom >> 2) & 0x01;
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b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
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UINT8 promval = color_prom[512+32+i];
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int r = combine_2_weights(weights_r, BIT(promval,6), BIT(promval,7));
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int g = combine_3_weights(weights_g, BIT(promval,3), BIT(promval,4), BIT(promval,5));
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int b = combine_3_weights(weights_b, BIT(promval,0), BIT(promval,1), BIT(promval,2));
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colortable_palette_set_color(machine->colortable,i+512+32,MAKE_RGB(r,g,b));
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color_prom++;
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}
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/* color_prom now points to the beginning of the sprite lookup table */
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/* character lookup table */
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for (i = 0;i < 512;i++)
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colortable_entry_set_value(machine->colortable,i,i);
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/* sprite lookup table */
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for (i = 0;i < 16*4;i++)
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{
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colortable_entry_set_value(machine->colortable, 512+i, 512+32+(*color_prom++));
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if (i % 4 == 3) color_prom += 4; /* half of the PROM is unused */
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UINT8 promval = color_prom[512+32+32+((i & 3) | ((i & ~3) << 1))];
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colortable_entry_set_value(machine->colortable, 512+i, 512+32+promval);
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}
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/* background */
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@ -166,6 +112,12 @@ PALETTE_INIT( m52 )
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/*************************************
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*
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* Tilemap info callback
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*
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*************************************/
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static TILE_GET_INFO( get_tile_info )
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{
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UINT8 video = videoram[tile_index];
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@ -191,6 +143,12 @@ static TILE_GET_INFO( get_tile_info )
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/*************************************
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*
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* Video startup
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*
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*************************************/
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VIDEO_START( m52 )
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{
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bg_tilemap = tilemap_create(get_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8, 8, 32, 32);
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@ -209,6 +167,12 @@ VIDEO_START( m52 )
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/*************************************
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*
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* Scroll registers
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*
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*************************************/
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WRITE8_HANDLER( m52_scroll_w )
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{
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@ -227,6 +191,12 @@ WRITE8_HANDLER( m52_scroll_w )
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/*************************************
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*
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* Video RAM write handlers
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*
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*************************************/
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WRITE8_HANDLER( m52_videoram_w )
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{
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videoram[offset] = data;
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@ -234,7 +204,6 @@ WRITE8_HANDLER( m52_videoram_w )
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}
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WRITE8_HANDLER( m52_colorram_w )
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{
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colorram[offset] = data;
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@ -242,6 +211,13 @@ WRITE8_HANDLER( m52_colorram_w )
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}
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/*************************************
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*
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* Custom protection
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*
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*************************************/
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/* This looks like some kind of protection implemented by a custom chip on the
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scroll board. It mangles the value written to the port m52_bg1xpos_w, as
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follows: result = popcount(value & 0x7f) ^ (value >> 7) */
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@ -256,22 +232,33 @@ READ8_HANDLER( m52_protection_r )
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}
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/*************************************
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*
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* Background control write handlers
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*
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*************************************/
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WRITE8_HANDLER( m52_bg1ypos_w )
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{
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bg1ypos = data;
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}
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WRITE8_HANDLER( m52_bg1xpos_w )
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{
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bg1xpos = data;
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}
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WRITE8_HANDLER( m52_bg2xpos_w )
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{
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bg2xpos = data;
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}
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WRITE8_HANDLER( m52_bg2ypos_w )
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{
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bg2ypos = data;
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}
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WRITE8_HANDLER( m52_bgcontrol_w )
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{
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bgcontrol = data;
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@ -291,6 +278,12 @@ WRITE8_HANDLER( m52_flipscreen_w )
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/*************************************
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*
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* Background rendering
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*
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*************************************/
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static void draw_background(running_machine *machine, mame_bitmap *bitmap, const rectangle *cliprect, int xpos, int ypos, int image)
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{
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rectangle rect;
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@ -340,6 +333,12 @@ static void draw_background(running_machine *machine, mame_bitmap *bitmap, const
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/*************************************
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*
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* Video render
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*
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*************************************/
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VIDEO_UPDATE( m52 )
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{
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int offs;
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