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Merge pull request #4574 from tyfighter/master

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Indigo: move LG1 "Light" graphics support out to its own device for future sharing
This commit is contained in:
MooglyGuy 2019-01-31 17:07:25 +01:00 committed by GitHub
commit 3add987857
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 464 additions and 379 deletions
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2
scripts/target/mame/mess.lua
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@ -3056,6 +3056,8 @@ files {
MAME_DIR .. "src/mame/drivers/4dpi.cpp",
MAME_DIR .. "src/mame/drivers/indigo.cpp",
MAME_DIR .. "src/mame/drivers/indy_indigo2.cpp",
MAME_DIR .. "src/mame/video/light.cpp",
MAME_DIR .. "src/mame/video/light.h",
MAME_DIR .. "src/mame/video/newport.cpp",
MAME_DIR .. "src/mame/video/newport.h",
MAME_DIR .. "src/mame/video/crime.cpp",

385
src/mame/drivers/indigo.cpp
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@ -22,17 +22,12 @@
#include "machine/eepromser.h"
#include "machine/hpc1.h"
#include "machine/sgi.h"
#include "emupal.h"
#include "screen.h"
#define ENABLE_ENTRY_GFX (1)
#include "video/light.h"
#define LOG_UNKNOWN (1 << 0)
#define LOG_INT (1 << 1)
#define LOG_DSP (1 << 2)
#define LOG_GFX (1 << 3)
#define LOG_GFX_CMD (1 << 4)
#define LOG_ALL (LOG_UNKNOWN | LOG_INT | LOG_DSP | LOG_GFX | LOG_GFX_CMD)
#define LOG_ALL (LOG_UNKNOWN | LOG_INT | LOG_DSP)
#define VERBOSE (LOG_UNKNOWN)
#include "logmacro.h"
@ -44,7 +39,7 @@ public:
: driver_device(mconfig, type, tag)
, m_hpc(*this, "hpc")
, m_eeprom(*this, "eeprom")
, m_palette(*this, "palette")
, m_light(*this, "lg1")
{
}
@ -58,96 +53,14 @@ protected:
DECLARE_WRITE32_MEMBER(int_w);
DECLARE_READ32_MEMBER(dsp_ram_r);
DECLARE_WRITE32_MEMBER(dsp_ram_w);
DECLARE_READ32_MEMBER(entry_r);
DECLARE_WRITE32_MEMBER(entry_w);
void do_rex_command();
void indigo_map(address_map &map);
uint32_t screen_update(screen_device &device, bitmap_rgb32 &bitmap, const rectangle &cliprect);
enum
{
REX15_PAGE0_SET = 0x00000000,
REX15_PAGE0_GO = 0x00000800,
REX15_PAGE1_SET = 0x00004790,
REX15_PAGE1_GO = 0x00004f90,
REX15_P0REG_COMMAND = 0x00000000,
REX15_P0REG_XSTARTI = 0x0000000c,
REX15_P0REG_YSTARTI = 0x0000001c,
REX15_P0REG_XYMOVE = 0x00000034,
REX15_P0REG_COLORREDI = 0x00000038,
REX15_P0REG_COLORGREENI = 0x00000040,
REX15_P0REG_COLORBLUEI = 0x00000048,
REX15_P0REG_COLORBACK = 0x0000005c,
REX15_P0REG_ZPATTERN = 0x00000060,
REX15_P0REG_XENDI = 0x00000084,
REX15_P0REG_YENDI = 0x00000088,
REX15_P1REG_WCLOCKREV = 0x00000054,
REX15_P1REG_CFGDATA = 0x00000058,
REX15_P1REG_CFGSEL = 0x0000005c,
REX15_P1REG_VC1_ADDRDATA = 0x00000060,
REX15_P1REG_CFGMODE = 0x00000068,
REX15_P1REG_XYOFFSET = 0x0000006c,
REX15_OP_NOP = 0x00000000,
REX15_OP_DRAW = 0x00000001,
REX15_OP_FLAG_BLOCK = 0x00000008,
REX15_OP_FLAG_LENGTH32 = 0x00000010,
REX15_OP_FLAG_QUADMODE = 0x00000020,
REX15_OP_FLAG_XYCONTINUE = 0x00000080,
REX15_OP_FLAG_STOPONX = 0x00000100,
REX15_OP_FLAG_STOPONY = 0x00000200,
REX15_OP_FLAG_ENZPATTERN = 0x00000400,
REX15_OP_FLAG_LOGICSRC = 0x00080000,
REX15_OP_FLAG_ZOPAQUE = 0x00800000,
REX15_OP_FLAG_ZCONTINUE = 0x01000000,
REX15_WRITE_ADDR = 0x00,
REX15_PALETTE_RAM = 0x01,
REX15_PIXEL_READ_MASK = 0x02,
REX15_CONTROL = 0x06
};
struct lg1_t
{
uint32_t m_config_sel;
uint32_t m_write_addr;
uint32_t m_control;
uint32_t m_command;
uint32_t m_x_start_i;
uint32_t m_y_start_i;
uint32_t m_xy_move;
uint32_t m_color_red_i;
uint32_t m_color_green_i;
uint32_t m_color_blue_i;
uint32_t m_color_back;
uint32_t m_z_pattern;
uint32_t m_x_end_i;
uint32_t m_y_end_i;
uint32_t m_x_curr_i;
uint32_t m_y_curr_i;
uint8_t m_palette_idx;
uint8_t m_palette_channel;
uint8_t m_palette_entry[3];
uint8_t m_pix_read_mask[256];
};
required_device<hpc1_device> m_hpc;
required_device<eeprom_serial_93cxx_device> m_eeprom;
required_device<palette_device> m_palette;
std::unique_ptr<uint32_t[]> m_dsp_ram;
required_device<light_video_device> m_light;
address_space *m_space;
lg1_t m_lg1;
std::unique_ptr<uint8_t[]> m_framebuffer;
};
class indigo3k_state : public indigo_state
@ -195,37 +108,11 @@ protected:
void indigo_state::machine_start()
{
m_dsp_ram = std::make_unique<uint32_t[]>(0x8000);
m_framebuffer = std::make_unique<uint8_t[]>(1024*768);
save_item(NAME(m_lg1.m_config_sel));
save_item(NAME(m_lg1.m_write_addr));
save_item(NAME(m_lg1.m_control));
save_item(NAME(m_lg1.m_command));
save_item(NAME(m_lg1.m_x_start_i));
save_item(NAME(m_lg1.m_y_start_i));
save_item(NAME(m_lg1.m_xy_move));
save_item(NAME(m_lg1.m_color_red_i));
save_item(NAME(m_lg1.m_color_green_i));
save_item(NAME(m_lg1.m_color_blue_i));
save_item(NAME(m_lg1.m_color_back));
save_item(NAME(m_lg1.m_z_pattern));
save_item(NAME(m_lg1.m_x_end_i));
save_item(NAME(m_lg1.m_y_end_i));
save_item(NAME(m_lg1.m_x_curr_i));
save_item(NAME(m_lg1.m_y_curr_i));
save_item(NAME(m_lg1.m_palette_idx));
save_item(NAME(m_lg1.m_palette_channel));
save_item(NAME(m_lg1.m_palette_entry));
save_item(NAME(m_lg1.m_pix_read_mask));
save_pointer(NAME(&m_dsp_ram[0]), 0x8000);
save_pointer(NAME(&m_framebuffer[0]), 1024*768);
}
void indigo_state::machine_reset()
{
memset(&m_lg1, 0, sizeof(lg1_t));
memset(&m_framebuffer[0], 0, 1024*768);
}
void indigo4k_state::machine_reset()
@ -259,262 +146,10 @@ WRITE32_MEMBER(indigo_state::dsp_ram_w)
m_dsp_ram[offset] = data;
}
READ32_MEMBER(indigo_state::entry_r)
{
uint32_t ret = 0;
switch (offset)
{
case REX15_PAGE0_GO/4:
LOGMASKED(LOG_GFX, "%s: LG1 Read: Status(?) (Go) %08x = %08x & %08x\n", machine().describe_context(), 0x1f3f0000 + offset*4, ret, mem_mask);
do_rex_command();
break;
case 0x0014/4:
ret = 0x033c0000;
LOGMASKED(LOG_GFX, "%s: LG1 Read: Presence Detect(?) %08x = %08x & %08x\n", machine().describe_context(), 0x1f3f0000 + offset*4, ret, mem_mask);
break;
default:
LOGMASKED(LOG_GFX, "%s: Unknown LG1 Read: %08x = %08x & %08x\n", machine().describe_context(), 0x1f3f0000 + offset*4, ret, mem_mask);
break;
}
return ret;
}
void indigo_state::do_rex_command()
{
if (m_lg1.m_command == 0)
{
return;
}
if (m_lg1.m_command == 0x30080329)
{
bool xycontinue = (m_lg1.m_command & REX15_OP_FLAG_XYCONTINUE);
bool copy = (m_lg1.m_command & REX15_OP_FLAG_LOGICSRC);
const uint32_t start_x = xycontinue ? m_lg1.m_x_curr_i : m_lg1.m_x_start_i;
const uint32_t start_y = xycontinue ? m_lg1.m_y_curr_i : m_lg1.m_y_start_i;
const uint32_t end_x = m_lg1.m_x_end_i;
const uint32_t end_y = m_lg1.m_y_end_i;
const uint32_t src_start_x = start_x + (m_lg1.m_xy_move >> 16);
const uint32_t src_start_y = start_y + (uint16_t)m_lg1.m_xy_move;;
LOGMASKED(LOG_GFX, "LG1: Command %08x: Block copy from %d,%d-%d,%d inclusive.\n", m_lg1.m_command, start_x, start_y, end_x, end_y);
if (copy)
{
for (uint32_t y = start_y, src_y = src_start_y; y <= end_y; y++, src_y++)
for (uint32_t x = start_x, src_x = src_start_x; x <= end_x; x++, src_x++)
m_framebuffer[y*1024 + x] = m_framebuffer[src_y*1024 + src_x];
}
else
{
for (uint32_t y = start_y; y <= end_y; y++)
for (uint32_t x = start_x; x <= end_x; x++)
m_framebuffer[y*1024 + x] = m_lg1.m_color_red_i;
}
}
else if (m_lg1.m_command == 0x30000329)
{
bool xycontinue = (m_lg1.m_command & REX15_OP_FLAG_XYCONTINUE);
uint32_t start_x = xycontinue ? m_lg1.m_x_curr_i : m_lg1.m_x_start_i;
uint32_t start_y = xycontinue ? m_lg1.m_y_curr_i : m_lg1.m_y_start_i;
uint32_t end_x = m_lg1.m_x_end_i;
uint32_t end_y = m_lg1.m_y_end_i;
LOGMASKED(LOG_GFX, "LG1: Command %08x: Block draw from %d,%d-%d,%d inclusive.\n", m_lg1.m_command, start_x, start_y, end_x, end_y);
for (uint32_t y = start_y; y <= end_y; y++)
{
for (uint32_t x = start_x; x <= end_x; x++)
{
m_framebuffer[y*1024 + x] = m_lg1.m_color_red_i;
}
}
}
else if (m_lg1.m_command == 0x300005a1 ||
m_lg1.m_command == 0x300005a9 ||
m_lg1.m_command == 0x300005b9)
{
bool xycontinue = (m_lg1.m_command & REX15_OP_FLAG_XYCONTINUE);
uint32_t start_x = xycontinue ? m_lg1.m_x_curr_i : m_lg1.m_x_start_i;
uint32_t start_y = xycontinue ? m_lg1.m_y_curr_i : m_lg1.m_y_start_i;
uint32_t end_x = m_lg1.m_x_end_i;
LOGMASKED(LOG_GFX, "LG1: Command %08x: Pattern draw from %d-%d at %d\n", m_lg1.m_command, start_x, end_x, start_y);
for (uint32_t x = start_x; x <= end_x && x < (start_x + 32); x++)
{
if (BIT(m_lg1.m_z_pattern, 31 - (x - start_x)))
{
m_framebuffer[start_y*1024 + x] = m_lg1.m_color_red_i;
}
m_lg1.m_x_curr_i++;
}
if (m_lg1.m_command & REX15_OP_FLAG_BLOCK)
{
if (m_lg1.m_x_curr_i > m_lg1.m_x_end_i)
{
m_lg1.m_y_curr_i--;
m_lg1.m_x_curr_i = m_lg1.m_x_start_i;
}
}
}
else
{
LOGMASKED(LOG_GFX_CMD | LOG_UNKNOWN, "%s: Unknown LG1 command: %08x\n", machine().describe_context(), m_lg1.m_command);
}
}
WRITE32_MEMBER(indigo_state::entry_w)
{
bool go = (offset >= REX15_PAGE1_GO/4) || (offset >= REX15_PAGE0_GO/4 && offset < REX15_PAGE1_SET/4);
switch (offset)
{
case (REX15_PAGE0_SET+REX15_P0REG_COMMAND)/4:
case (REX15_PAGE0_GO+REX15_P0REG_COMMAND)/4:
m_lg1.m_command = data;
LOGMASKED(LOG_GFX, "%s: LG1 REX1.5 Command Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
if (go)
do_rex_command();
break;
case (REX15_PAGE0_SET+REX15_P0REG_XSTARTI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_XSTARTI)/4:
m_lg1.m_x_start_i = data;
m_lg1.m_x_curr_i = m_lg1.m_x_start_i;
LOGMASKED(LOG_GFX, "%s: LG1 REX1.5 XStartI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_YSTARTI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_YSTARTI)/4:
m_lg1.m_y_start_i = data;
m_lg1.m_y_curr_i = m_lg1.m_y_start_i;
LOGMASKED(LOG_GFX, "%s: LG1 REX1.5 YStartI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_XYMOVE)/4:
case (REX15_PAGE0_GO+REX15_P0REG_XYMOVE)/4:
m_lg1.m_xy_move = data;
LOGMASKED(LOG_GFX, "%s: LG1 REX1.5 XYMove Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
if (go)
do_rex_command();
break;
case (REX15_PAGE0_SET+REX15_P0REG_COLORREDI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_COLORREDI)/4:
m_lg1.m_color_red_i = data;
LOGMASKED(LOG_GFX, "%s: LG1 REX1.5 ColorRedI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_COLORGREENI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_COLORGREENI)/4:
m_lg1.m_color_green_i = data;
LOGMASKED(LOG_GFX, "%s: LG1 REX1.5 ColorGreenI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_COLORBLUEI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_COLORBLUEI)/4:
m_lg1.m_color_blue_i = data;
LOGMASKED(LOG_GFX, "%s: LG1 REX1.5 ColorBlueI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_COLORBACK)/4:
case (REX15_PAGE0_GO+REX15_P0REG_COLORBACK)/4:
m_lg1.m_color_back = data;
LOGMASKED(LOG_GFX, "%s: LG1 REX1.5 ColorBlueI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_ZPATTERN)/4:
case (REX15_PAGE0_GO+REX15_P0REG_ZPATTERN)/4:
m_lg1.m_z_pattern = data;
LOGMASKED(LOG_GFX, "%s: LG1 REX1.5 ZPattern Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
if (go)
do_rex_command();
break;
case (REX15_PAGE0_SET+REX15_P0REG_XENDI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_XENDI)/4:
m_lg1.m_x_end_i = data;
LOGMASKED(LOG_GFX, "%s: LG1 REX1.5 XEndI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_YENDI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_YENDI)/4:
m_lg1.m_y_end_i = data;
LOGMASKED(LOG_GFX, "%s: LG1 REX1.5 YEndI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE1_SET+REX15_P1REG_CFGSEL)/4:
case (REX15_PAGE1_GO+REX15_P1REG_CFGSEL)/4:
m_lg1.m_config_sel = data;
switch (data)
{
case REX15_WRITE_ADDR:
LOGMASKED(LOG_GFX, "%s: LG1 ConfigSel Write = %08x (Write Addr)\n", machine().describe_context(), data);
break;
case REX15_PALETTE_RAM:
LOGMASKED(LOG_GFX, "%s: LG1 ConfigSel Write = %08x (Palette RAM)\n", machine().describe_context(), data);
break;
case REX15_CONTROL:
LOGMASKED(LOG_GFX, "%s: LG1 ConfigSel Write = %08x (Control)\n", machine().describe_context(), data);
break;
case REX15_PIXEL_READ_MASK:
LOGMASKED(LOG_GFX, "%s: LG1 ConfigSel Write = %08x (Pixel Read Mask)\n", machine().describe_context(), data);
break;
default:
LOGMASKED(LOG_GFX, "%s: LG1 ConfigSel Write = %08x (Unknown)\n", machine().describe_context(), data);
break;
}
break;
case (REX15_PAGE1_SET+REX15_P1REG_CFGDATA)/4:
case (REX15_PAGE1_GO+REX15_P1REG_CFGDATA)/4:
if (go) // Ignore 'Go' writes for now, unsure what they do
break;
switch (m_lg1.m_config_sel)
{
case REX15_WRITE_ADDR:
LOGMASKED(LOG_GFX, "%s: LG1 ConfigSel Write: Setting WriteAddr to %08x\n", machine().describe_context(), data);
m_lg1.m_write_addr = data;
if (m_lg1.m_control == 0xf)
{
LOGMASKED(LOG_GFX, "%s: LG1 about to set palette entry %02x\n", machine().describe_context(), (uint8_t)data);
m_lg1.m_palette_idx = (uint8_t)data;
m_lg1.m_palette_channel = 0;
}
break;
case REX15_PALETTE_RAM:
LOGMASKED(LOG_GFX, "%s: LG1 ConfigSel Write: Setting Palette RAM %02x entry %d to %02x\n", machine().describe_context(),
m_lg1.m_palette_idx, m_lg1.m_palette_channel, (uint8_t)data);
m_lg1.m_palette_entry[m_lg1.m_palette_channel++] = (uint8_t)data;
if (m_lg1.m_palette_channel == 3)
{
m_palette->set_pen_color(m_lg1.m_palette_idx, m_lg1.m_palette_entry[0], m_lg1.m_palette_entry[1], m_lg1.m_palette_entry[2]);
}
break;
case REX15_CONTROL:
LOGMASKED(LOG_GFX, "%s: LG1 ConfigSel Write: Setting Control to %08x\n", machine().describe_context(), data);
m_lg1.m_control = data;
break;
case REX15_PIXEL_READ_MASK:
LOGMASKED(LOG_GFX, "%s: LG1 ConfigSel Write = %08x (Pixel Read Mask, entry %02x)\n", machine().describe_context(), data, m_lg1.m_palette_idx);
m_lg1.m_pix_read_mask[m_lg1.m_palette_idx] = (uint8_t)data;
break;
default:
LOGMASKED(LOG_GFX, "%s: LG1 Unknown ConfigData Write = %08x\n", machine().describe_context(), data);
break;
}
break;
default:
LOGMASKED(LOG_GFX, "%s: Unknown LG1 Write: %08x = %08x & %08x\n", machine().describe_context(), 0x1f3f0000 + offset*4, data, mem_mask);
break;
}
}
uint32_t indigo_state::screen_update(screen_device &device, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
const rgb_t *pens = m_palette->palette()->entry_list_raw();
for (int y = 0; y < 768; y++)
{
uint32_t *dst = &bitmap.pix32(y);
uint8_t *src = &m_framebuffer[y*1024];
for (int x = 0; x < 1024; x++)
{
*dst++ = pens[*src++];
}
}
return 0;
}
void indigo_state::indigo_map(address_map &map)
{
map(0x1f3f0000, 0x1f3fffff).rw(FUNC(indigo_state::entry_r), FUNC(indigo_state::entry_w));
map(0x1f3f0000, 0x1f3fffff).rw(m_light, FUNC(light_video_device::entry_r), FUNC(light_video_device::entry_w));
map(0x1fb80000, 0x1fb8ffff).rw(m_hpc, FUNC(hpc1_device::read), FUNC(hpc1_device::write));
map(0x1fbd9000, 0x1fbd903f).rw(FUNC(indigo_state::int_r), FUNC(indigo_state::int_w));
map(0x1fbe0000, 0x1fbfffff).rw(FUNC(indigo_state::dsp_ram_r), FUNC(indigo_state::dsp_ram_w));
@ -559,15 +194,7 @@ INPUT_PORTS_END
void indigo_state::indigo_base(machine_config &config)
{
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(60);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
screen.set_size(1024, 768);
screen.set_visarea(0, 1024-1, 0, 768-1);
screen.set_screen_update(FUNC(indigo_state::screen_update));
PALETTE(config, m_palette).set_entries(256);
LIGHT_VIDEO(config, m_light);
EEPROM_93C56_16BIT(config, m_eeprom);
}

381
src/mame/video/light.cpp Normal file
View File

@ -0,0 +1,381 @@
// license:BSD-3-Clause
// copyright-holders:Ryan Holtz, Tyson Smith
/*
Silicon Graphics LG1 "Light" graphics board used as
entry level graphics in the Indigo and IRIS Crimson.
*/
#include "emu.h"
#include "video/light.h"
#include "screen.h"
#define LOG_REX (1 << 0)
#define LOG_ALL (LOG_REX)
#define VERBOSE (0)
#include "logmacro.h"
enum
{
REX15_PAGE0_SET = 0x00000000,
REX15_PAGE0_GO = 0x00000800,
REX15_PAGE1_SET = 0x00004790,
REX15_PAGE1_GO = 0x00004f90,
REX15_P0REG_COMMAND = 0x00000000,
REX15_P0REG_XSTARTI = 0x0000000c,
REX15_P0REG_YSTARTI = 0x0000001c,
REX15_P0REG_XYMOVE = 0x00000034,
REX15_P0REG_COLORREDI = 0x00000038,
REX15_P0REG_COLORGREENI = 0x00000040,
REX15_P0REG_COLORBLUEI = 0x00000048,
REX15_P0REG_COLORBACK = 0x0000005c,
REX15_P0REG_ZPATTERN = 0x00000060,
REX15_P0REG_XENDI = 0x00000084,
REX15_P0REG_YENDI = 0x00000088,
REX15_P1REG_WCLOCKREV = 0x00000054,
REX15_P1REG_CFGDATA = 0x00000058,
REX15_P1REG_CFGSEL = 0x0000005c,
REX15_P1REG_VC1_ADDRDATA = 0x00000060,
REX15_P1REG_CFGMODE = 0x00000068,
REX15_P1REG_XYOFFSET = 0x0000006c,
REX15_OP_NOP = 0x00000000,
REX15_OP_DRAW = 0x00000001,
REX15_OP_FLAG_BLOCK = 0x00000008,
REX15_OP_FLAG_LENGTH32 = 0x00000010,
REX15_OP_FLAG_QUADMODE = 0x00000020,
REX15_OP_FLAG_XYCONTINUE = 0x00000080,
REX15_OP_FLAG_STOPONX = 0x00000100,
REX15_OP_FLAG_STOPONY = 0x00000200,
REX15_OP_FLAG_ENZPATTERN = 0x00000400,
REX15_OP_FLAG_LOGICSRC = 0x00080000,
REX15_OP_FLAG_ZOPAQUE = 0x00800000,
REX15_OP_FLAG_ZCONTINUE = 0x01000000,
REX15_WRITE_ADDR = 0x00,
REX15_PALETTE_RAM = 0x01,
REX15_PIXEL_READ_MASK = 0x02,
REX15_CONTROL = 0x06
};
DEFINE_DEVICE_TYPE(LIGHT_VIDEO, light_video_device, "light_video", "SGI Light graphics board")
light_video_device::light_video_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, LIGHT_VIDEO, tag, owner, clock)
, m_palette(*this, "palette")
{
}
//-------------------------------------------------
// device_add_mconfig - device-specific machine configuration
//-------------------------------------------------
void light_video_device::device_add_mconfig(machine_config &config)
{
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(60);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
screen.set_size(x_res, y_res);
screen.set_visarea(0, x_res-1, 0, y_res-1);
screen.set_screen_update(FUNC(light_video_device::screen_update));
PALETTE(config, m_palette).set_entries(256);
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void light_video_device::device_start()
{
m_framebuffer = std::make_unique<uint8_t[]>(x_res*y_res);
save_item(NAME(m_lg1.m_config_sel));
save_item(NAME(m_lg1.m_write_addr));
save_item(NAME(m_lg1.m_control));
save_item(NAME(m_lg1.m_command));
save_item(NAME(m_lg1.m_x_start_i));
save_item(NAME(m_lg1.m_y_start_i));
save_item(NAME(m_lg1.m_xy_move));
save_item(NAME(m_lg1.m_color_red_i));
save_item(NAME(m_lg1.m_color_green_i));
save_item(NAME(m_lg1.m_color_blue_i));
save_item(NAME(m_lg1.m_color_back));
save_item(NAME(m_lg1.m_z_pattern));
save_item(NAME(m_lg1.m_x_end_i));
save_item(NAME(m_lg1.m_y_end_i));
save_item(NAME(m_lg1.m_x_curr_i));
save_item(NAME(m_lg1.m_y_curr_i));
save_item(NAME(m_lg1.m_palette_idx));
save_item(NAME(m_lg1.m_palette_channel));
save_item(NAME(m_lg1.m_palette_entry));
save_item(NAME(m_lg1.m_pix_read_mask));
save_pointer(NAME(&m_framebuffer[0]), x_res*y_res);
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void light_video_device::device_reset()
{
memset(&m_lg1, 0, sizeof(lg1_t));
memset(&m_framebuffer[0], 0, x_res*y_res);
}
uint32_t light_video_device::screen_update(screen_device &device, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
const rgb_t *pens = m_palette->palette()->entry_list_raw();
const uint8_t *src = &m_framebuffer[0];
for (uint32_t y = 0; y < y_res; y++) {
uint32_t *dst = &bitmap.pix32(y);
for (uint32_t x = 0; x < x_res; x++) {
*dst++ = pens[*src++];
}
}
return 0;
}
READ32_MEMBER(light_video_device::entry_r)
{
uint32_t ret = 0;
switch (offset)
{
case REX15_PAGE0_GO/4:
LOGMASKED(LOG_REX, "%s: LG1 Read: Status(?) (Go) %08x = %08x & %08x\n", machine().describe_context(), 0x1f3f0000 + offset*4, ret, mem_mask);
do_rex_command();
break;
case 0x0014/4:
ret = 0x033c0000;
LOGMASKED(LOG_REX, "%s: LG1 Read: Presence Detect(?) %08x = %08x & %08x\n", machine().describe_context(), 0x1f3f0000 + offset*4, ret, mem_mask);
break;
default:
LOGMASKED(LOG_REX, "%s: Unknown LG1 Read: %08x = %08x & %08x\n", machine().describe_context(), 0x1f3f0000 + offset*4, ret, mem_mask);
break;
}
return ret;
}
WRITE32_MEMBER(light_video_device::entry_w)
{
bool go = (offset >= REX15_PAGE1_GO/4) || (offset >= REX15_PAGE0_GO/4 && offset < REX15_PAGE1_SET/4);
switch (offset)
{
case (REX15_PAGE0_SET+REX15_P0REG_COMMAND)/4:
case (REX15_PAGE0_GO+REX15_P0REG_COMMAND)/4:
m_lg1.m_command = data;
LOGMASKED(LOG_REX, "%s: LG1 REX1.5 Command Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
if (go)
do_rex_command();
break;
case (REX15_PAGE0_SET+REX15_P0REG_XSTARTI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_XSTARTI)/4:
m_lg1.m_x_start_i = data;
m_lg1.m_x_curr_i = m_lg1.m_x_start_i;
LOGMASKED(LOG_REX, "%s: LG1 REX1.5 XStartI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_YSTARTI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_YSTARTI)/4:
m_lg1.m_y_start_i = data;
m_lg1.m_y_curr_i = m_lg1.m_y_start_i;
LOGMASKED(LOG_REX, "%s: LG1 REX1.5 YStartI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_XYMOVE)/4:
case (REX15_PAGE0_GO+REX15_P0REG_XYMOVE)/4:
m_lg1.m_xy_move = data;
LOGMASKED(LOG_REX, "%s: LG1 REX1.5 XYMove Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
if (go)
do_rex_command();
break;
case (REX15_PAGE0_SET+REX15_P0REG_COLORREDI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_COLORREDI)/4:
m_lg1.m_color_red_i = data;
LOGMASKED(LOG_REX, "%s: LG1 REX1.5 ColorRedI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_COLORGREENI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_COLORGREENI)/4:
m_lg1.m_color_green_i = data;
LOGMASKED(LOG_REX, "%s: LG1 REX1.5 ColorGreenI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_COLORBLUEI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_COLORBLUEI)/4:
m_lg1.m_color_blue_i = data;
LOGMASKED(LOG_REX, "%s: LG1 REX1.5 ColorBlueI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_COLORBACK)/4:
case (REX15_PAGE0_GO+REX15_P0REG_COLORBACK)/4:
m_lg1.m_color_back = data;
LOGMASKED(LOG_REX, "%s: LG1 REX1.5 ColorBlueI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_ZPATTERN)/4:
case (REX15_PAGE0_GO+REX15_P0REG_ZPATTERN)/4:
m_lg1.m_z_pattern = data;
LOGMASKED(LOG_REX, "%s: LG1 REX1.5 ZPattern Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
if (go)
do_rex_command();
break;
case (REX15_PAGE0_SET+REX15_P0REG_XENDI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_XENDI)/4:
m_lg1.m_x_end_i = data;
LOGMASKED(LOG_REX, "%s: LG1 REX1.5 XEndI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE0_SET+REX15_P0REG_YENDI)/4:
case (REX15_PAGE0_GO+REX15_P0REG_YENDI)/4:
m_lg1.m_y_end_i = data;
LOGMASKED(LOG_REX, "%s: LG1 REX1.5 YEndI Write (%s) = %08x\n", machine().describe_context(), (offset & 0x200) ? "Go" : "Set", data);
break;
case (REX15_PAGE1_SET+REX15_P1REG_CFGSEL)/4:
case (REX15_PAGE1_GO+REX15_P1REG_CFGSEL)/4:
m_lg1.m_config_sel = data;
switch (data)
{
case REX15_WRITE_ADDR:
LOGMASKED(LOG_REX, "%s: LG1 ConfigSel Write = %08x (Write Addr)\n", machine().describe_context(), data);
break;
case REX15_PALETTE_RAM:
LOGMASKED(LOG_REX, "%s: LG1 ConfigSel Write = %08x (Palette RAM)\n", machine().describe_context(), data);
break;
case REX15_CONTROL:
LOGMASKED(LOG_REX, "%s: LG1 ConfigSel Write = %08x (Control)\n", machine().describe_context(), data);
break;
case REX15_PIXEL_READ_MASK:
LOGMASKED(LOG_REX, "%s: LG1 ConfigSel Write = %08x (Pixel Read Mask)\n", machine().describe_context(), data);
break;
default:
LOGMASKED(LOG_REX, "%s: LG1 ConfigSel Write = %08x (Unknown)\n", machine().describe_context(), data);
break;
}
break;
case (REX15_PAGE1_SET+REX15_P1REG_CFGDATA)/4:
case (REX15_PAGE1_GO+REX15_P1REG_CFGDATA)/4:
if (go) // Ignore 'Go' writes for now, unsure what they do
break;
switch (m_lg1.m_config_sel)
{
case REX15_WRITE_ADDR:
LOGMASKED(LOG_REX, "%s: LG1 ConfigSel Write: Setting WriteAddr to %08x\n", machine().describe_context(), data);
m_lg1.m_write_addr = data;
if (m_lg1.m_control == 0xf)
{
LOGMASKED(LOG_REX, "%s: LG1 about to set palette entry %02x\n", machine().describe_context(), (uint8_t)data);
m_lg1.m_palette_idx = (uint8_t)data;
m_lg1.m_palette_channel = 0;
}
break;
case REX15_PALETTE_RAM:
LOGMASKED(LOG_REX, "%s: LG1 ConfigSel Write: Setting Palette RAM %02x entry %d to %02x\n", machine().describe_context(),
m_lg1.m_palette_idx, m_lg1.m_palette_channel, (uint8_t)data);
m_lg1.m_palette_entry[m_lg1.m_palette_channel++] = (uint8_t)data;
if (m_lg1.m_palette_channel == 3)
{
m_palette->set_pen_color(m_lg1.m_palette_idx, m_lg1.m_palette_entry[0], m_lg1.m_palette_entry[1], m_lg1.m_palette_entry[2]);
}
break;
case REX15_CONTROL:
LOGMASKED(LOG_REX, "%s: LG1 ConfigSel Write: Setting Control to %08x\n", machine().describe_context(), data);
m_lg1.m_control = data;
break;
case REX15_PIXEL_READ_MASK:
LOGMASKED(LOG_REX, "%s: LG1 ConfigSel Write = %08x (Pixel Read Mask, entry %02x)\n", machine().describe_context(), data, m_lg1.m_palette_idx);
m_lg1.m_pix_read_mask[m_lg1.m_palette_idx] = (uint8_t)data;
break;
default:
LOGMASKED(LOG_REX, "%s: LG1 Unknown ConfigData Write = %08x\n", machine().describe_context(), data);
break;
}
break;
default:
LOGMASKED(LOG_REX, "%s: Unknown LG1 Write: %08x = %08x & %08x\n", machine().describe_context(), 0x1f3f0000 + offset*4, data, mem_mask);
break;
}
}
void light_video_device::do_rex_command()
{
if (m_lg1.m_command == 0)
{
return;
}
if (m_lg1.m_command == 0x30080329)
{
bool xycontinue = (m_lg1.m_command & REX15_OP_FLAG_XYCONTINUE);
bool copy = (m_lg1.m_command & REX15_OP_FLAG_LOGICSRC);
const uint32_t start_x = xycontinue ? m_lg1.m_x_curr_i : m_lg1.m_x_start_i;
const uint32_t start_y = xycontinue ? m_lg1.m_y_curr_i : m_lg1.m_y_start_i;
const uint32_t end_x = m_lg1.m_x_end_i;
const uint32_t end_y = m_lg1.m_y_end_i;
const uint32_t src_start_x = start_x + (m_lg1.m_xy_move >> 16);
const uint32_t src_start_y = start_y + (uint16_t)m_lg1.m_xy_move;;
LOGMASKED(LOG_REX, "LG1: Command %08x: Block copy from %d,%d-%d,%d inclusive.\n", m_lg1.m_command, start_x, start_y, end_x, end_y);
if (copy)
{
for (uint32_t y = start_y, src_y = src_start_y; y <= end_y; y++, src_y++)
for (uint32_t x = start_x, src_x = src_start_x; x <= end_x; x++, src_x++)
m_framebuffer[y*x_res + x] = m_framebuffer[src_y*x_res + src_x];
}
else
{
for (uint32_t y = start_y; y <= end_y; y++)
for (uint32_t x = start_x; x <= end_x; x++)
m_framebuffer[y*x_res + x] = m_lg1.m_color_red_i;
}
}
else if (m_lg1.m_command == 0x30000329)
{
bool xycontinue = (m_lg1.m_command & REX15_OP_FLAG_XYCONTINUE);
uint32_t start_x = xycontinue ? m_lg1.m_x_curr_i : m_lg1.m_x_start_i;
uint32_t start_y = xycontinue ? m_lg1.m_y_curr_i : m_lg1.m_y_start_i;
uint32_t end_x = m_lg1.m_x_end_i;
uint32_t end_y = m_lg1.m_y_end_i;
LOGMASKED(LOG_REX, "LG1: Command %08x: Block draw from %d,%d-%d,%d inclusive.\n", m_lg1.m_command, start_x, start_y, end_x, end_y);
for (uint32_t y = start_y; y <= end_y; y++)
{
for (uint32_t x = start_x; x <= end_x; x++)
{
m_framebuffer[y*x_res + x] = m_lg1.m_color_red_i;
}
}
}
else if (m_lg1.m_command == 0x300005a1 ||
m_lg1.m_command == 0x300005a9 ||
m_lg1.m_command == 0x300005b9)
{
bool xycontinue = (m_lg1.m_command & REX15_OP_FLAG_XYCONTINUE);
uint32_t start_x = xycontinue ? m_lg1.m_x_curr_i : m_lg1.m_x_start_i;
uint32_t start_y = xycontinue ? m_lg1.m_y_curr_i : m_lg1.m_y_start_i;
uint32_t end_x = m_lg1.m_x_end_i;
LOGMASKED(LOG_REX, "LG1: Command %08x: Pattern draw from %d-%d at %d\n", m_lg1.m_command, start_x, end_x, start_y);
for (uint32_t x = start_x; x <= end_x && x < (start_x + 32); x++)
{
if (BIT(m_lg1.m_z_pattern, 31 - (x - start_x)))
{
m_framebuffer[start_y*x_res + x] = m_lg1.m_color_red_i;
}
m_lg1.m_x_curr_i++;
}
if (m_lg1.m_command & REX15_OP_FLAG_BLOCK)
{
if (m_lg1.m_x_curr_i > m_lg1.m_x_end_i)
{
m_lg1.m_y_curr_i--;
m_lg1.m_x_curr_i = m_lg1.m_x_start_i;
}
}
}
else
{
LOGMASKED(LOG_REX, "%s: Unknown LG1 command: %08x\n", machine().describe_context(), m_lg1.m_command);
}
}

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src/mame/video/light.h Normal file
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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz, Tyson Smith
/*
Silicon Graphics LG1 "Light" graphics board used as
entry level graphics in the Indigo and IRIS Crimson.
*/
#ifndef MAME_VIDEO_LIGHT_H
#define MAME_VIDEO_LIGHT_H
#pragma once
#include "emupal.h"
class light_video_device : public device_t
{
public:
light_video_device(const machine_config &mconfig, const char *tag, device_t *owner)
: light_video_device(mconfig, tag, owner, (uint32_t)0)
{
}
light_video_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
uint32_t screen_update(screen_device &device, bitmap_rgb32 &bitmap, const rectangle &cliprect);
DECLARE_READ32_MEMBER(entry_r);
DECLARE_WRITE32_MEMBER(entry_w);
static constexpr uint32_t x_res = 1024;
static constexpr uint32_t y_res = 768;
protected:
void device_add_mconfig(machine_config &config) override;
virtual void device_start() override;
virtual void device_reset() override;
private:
void do_rex_command();
struct lg1_t
{
uint32_t m_config_sel;
uint32_t m_write_addr;
uint32_t m_control;
uint32_t m_command;
uint32_t m_x_start_i;
uint32_t m_y_start_i;
uint32_t m_xy_move;
uint32_t m_color_red_i;
uint32_t m_color_green_i;
uint32_t m_color_blue_i;
uint32_t m_color_back;
uint32_t m_z_pattern;
uint32_t m_x_end_i;
uint32_t m_y_end_i;
uint32_t m_x_curr_i;
uint32_t m_y_curr_i;
uint8_t m_palette_idx;
uint8_t m_palette_channel;
uint8_t m_palette_entry[3];
uint8_t m_pix_read_mask[256];
};
lg1_t m_lg1;
required_device<palette_device> m_palette;
std::unique_ptr<uint8_t[]> m_framebuffer;
};
DECLARE_DEVICE_TYPE(LIGHT_VIDEO, light_video_device)
#endif // MAME_VIDEO_LIGHT_H