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machine/pxa255.cpp: add basic screen visible area configuration
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This commit is contained in:
angelosa 2024-11-06 19:51:42 +01:00
parent 7cee552e3d
commit 48a24099e1
2 changed files with 25 additions and 7 deletions
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29
src/devices/machine/pxa255.cpp
View file

@ -39,6 +39,7 @@ pxa255_periphs_device::pxa255_periphs_device(const machine_config &mconfig, cons
, m_maincpu(*this, finder_base::DUMMY_TAG)
, m_dmadac(*this, "dac%u", 1U)
, m_palette(*this, "palette")
, m_screen(*this, "screen")
{
}
@ -253,12 +254,14 @@ void pxa255_periphs_device::device_reset()
void pxa255_periphs_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(0));
screen.set_size(1024, 1024);
screen.set_visarea(0, 295, 0, 479);
screen.set_screen_update(FUNC(pxa255_periphs_device::screen_update));
// TODO: should be SCREEN_TYPE_LCD, but that dislikes dynamic configure
// will stay stuck at 296x480 aspect ratio.
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
m_screen->set_refresh_hz(60);
m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(0));
m_screen->set_size(1024, 1024);
m_screen->set_visarea(0, 295, 0, 479);
m_screen->set_screen_update(FUNC(pxa255_periphs_device::screen_update));
PALETTE(config, m_palette).set_entries(256);
@ -1462,10 +1465,24 @@ template <int Which>
void pxa255_periphs_device::lcd_lccr_w(offs_t offset, u32 data, u32 mem_mask)
{
LOGMASKED(LOG_LCD, "%s: lcd_lccr_w: LCD Control Register %d = %08x & %08x\n", machine().describe_context(), Which, data, mem_mask);
if (Which == 0)
m_lcd_regs.lccr[Which] = data & 0x00fffeff;
else
{
m_lcd_regs.lccr[Which] = data;
if (Which == 1 || Which == 2)
{
const u16 lpp = (m_lcd_regs.lccr[2] & LCCR2_LPP);
const u16 ppl = (m_lcd_regs.lccr[1] & LCCR1_PPL);
if (lpp && ppl)
{
rectangle rect(0, ppl, 0, lpp);
m_screen->configure(1024, 1024, rect, HZ_TO_ATTOSECONDS(60));
}
}
}
}
template <int Which>

3
src/devices/machine/pxa255.h
View file

@ -17,7 +17,7 @@
#include "cpu/arm7/arm7.h"
#include "sound/dmadac.h"
#include "emupal.h"
#include "screen.h"
class pxa255_periphs_device : public device_t
{
@ -469,6 +469,7 @@ protected:
required_device<cpu_device> m_maincpu;
required_device_array<dmadac_sound_device, 2> m_dmadac;
required_device<palette_device> m_palette;
required_device<screen_device> m_screen;
std::unique_ptr<u32[]> m_lcd_palette; // 0x100
std::unique_ptr<u8[]> m_lcd_framebuffer; // 0x100000