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aristocrat/aristmk6.cpp: convert video to RGB565, misc notes

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This commit is contained in:
angelosa 2022-12-23 05:18:03 +01:00
parent 5e17cb34d7
commit f815e5e188
1 changed files with 49 additions and 25 deletions
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74
src/mame/aristocrat/aristmk6.cpp
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@ -1,6 +1,25 @@
// license:BSD-3-Clause
// copyright-holders:Angelo Salese
/*
/**************************************************************************************************
Notes:
- most BIOSes needs SH-4 MMU
- exception is with earlier games/BIOSes, for example:
mamefoo scatmag2sa -bios au-sa1
will run the program up to "vidgam.c: could not set the desired video mode"
bp 800795a, 1, {r0=0;g}
- "v_scene.c: Could not initialize Display Manager" & "spin.c: cannot load assets",
both related to PLX controller not DMA-ing?
TODO:
- Identify irq sources;
- Irq acknowledge doesn't work as intended;
- Emulate PLX9054 controller & PCI root;
- PMX1 likely runs under PCI bus too;
- Eventually gets to "flyback" errors, pings $12000130-$3f for strobe and/or irq enable.
Flyback is an alias for vblank, cfr. Acorn Archimedes.
===================================================================================================
Aristocrat MK6 (2000)
Product numbers: 410480, 410481, 410556, 410557
@ -68,7 +87,7 @@ The South Australian system set and game (only one dumped so far) uses the VLC (
Victorian games (none are dumped) use either VLC or QCOM depending on the game and/or the operator the machines were designed for. Victoria had two "rival" gaming operators during the MK6's lifetime.
*/
**************************************************************************************************/
#include "emu.h"
#include "cpu/sh/sh4.h"
@ -102,18 +121,13 @@ private:
uint8_t test_r(offs_t offset);
void eeprom_w(uint64_t data);
uint64_t hwver_r();
uint32_t screen_update_aristmk6(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
virtual void video_start() override;
virtual void machine_reset() override;
void aristmk6_map(address_map &map);
void aristmk6_port(address_map &map);
#if 0
u32 m_test_x = 0, m_test_y = 0, m_start_offs = 0;
u8 m_type = 0;
#endif
u8 irl0pend = 0, irl0en = 0;
u8 irl1pend = 0, irl1en = 0;
u8 irl2pend = 0, irl2en = 0; // UARTs ?
@ -137,16 +151,13 @@ void aristmk6_state::machine_reset()
irl0pend = irl0en = irl1pend = irl1en = irl2pend = irl2en = irl3pend0 = irl3en0 = irl3pend1 = irl3en1 = 0;
}
uint32_t aristmk6_state::screen_update_aristmk6(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
uint32_t aristmk6_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
#if 0
int x,y,count;
const uint8_t *blit_ram = memregion("maincpu")->base();
if (machine().input().code_pressed(KEYCODE_U)) {
irl2pend |= 2;
testIrq();
}
static u32 m_test_x = 0, m_test_y = 0, m_start_offs = 0;
static u8 m_type = 0;
if(machine().input().code_pressed(KEYCODE_Z))
m_test_x++;
@ -220,26 +231,37 @@ uint32_t aristmk6_state::screen_update_aristmk6(screen_device &screen, bitmap_rg
}
#else
/*
if (machine().input().code_pressed_once(KEYCODE_U))
{
irl2pend |= 2;
testIrq();
machine().debug_break();
}
*/
// TODO: honor cliprect, remove count variable, RGB565 format is unconfirmed, likely double buffered
int count = 0;
for (int y = 0;y < 480;y++)
for (int y = 0; y < 480; y++)
{
for (int x = 0;x < 640/2;x++)
for (int x = 0; x < 640 / 2; x++)
{
uint64_t pix = m_vram[count];
uint32_t pix1;
int col;
u8 r, g, b;
pix1 = pix & 0xffffffff;
col = 0;
if (pix1) col = 1;
bitmap.pix(y, x*2) = m_palette->pen(col);
r = pal5bit((pix1 & 0x001f) >> 0);
g = pal6bit((pix1 & 0x07e0) >> 5);
b = pal5bit((pix1 & 0xf800) >> 11);
bitmap.pix(y, x * 2) = r | g << 8 | b << 16;
pix1 = pix >> 32;
col = 0;
if (pix1) col = 1;
bitmap.pix(y, x*2+1) = m_palette->pen(col);
r = pal5bit((pix1 & 0x001f) >> 0);
g = pal6bit((pix1 & 0x07e0) >> 5);
b = pal5bit((pix1 & 0xf800) >> 11);
bitmap.pix(y, x * 2 + 1) = r | g << 8 | b << 16;
count++;
}
@ -356,6 +378,7 @@ void aristmk6_state::aristmk6_map(address_map &map)
map(0x11000000, 0x1107ffff).ram(); // SRAM1 512KB
map(0x11800000, 0x1187ffff).ram(); // SRAM2 512KB
// 12000xxx main control registers area
// map(0x12000000, another eeprom or SPI bus
map(0x12000010, 0x12000017).w(FUNC(aristmk6_state::eeprom_w));
map(0x12000078, 0x1200007f).nopw(); // watchdog ??
map(0x12000080, 0x12000087).nopw(); // 0-1-2 written here repeatedly, diag LED or smth ?
@ -364,6 +387,7 @@ void aristmk6_state::aristmk6_map(address_map &map)
map(0x12000108, 0x12000127).w(FUNC(aristmk6_state::irqen_w));
map(0x12400010, 0x12400017).rw(m_uart1, FUNC(ns16550_device::ins8250_r), FUNC(ns16550_device::ins8250_w));
map(0x12400018, 0x1240001f).rw(m_uart0, FUNC(ns16550_device::ins8250_r), FUNC(ns16550_device::ins8250_w));
// map(0x13000000 MMIO space for PLX9054?
map(0x13800000, 0x13800007).r(FUNC(aristmk6_state::test_r));
}
@ -409,7 +433,7 @@ void aristmk6_state::aristmk6(machine_config &config)
screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
screen.set_size(640, 480);
screen.set_visarea(0, 640-1, 0, 480-1);
screen.set_screen_update(FUNC(aristmk6_state::screen_update_aristmk6));
screen.set_screen_update(FUNC(aristmk6_state::screen_update));
PALETTE(config, m_palette).set_entries(0x1000);
}