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apple/rbv.cpp: Derive screen timing from oscillator inputs.

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This commit is contained in:
Vas Crabb 2025-04-13 06:43:49 +10:00
parent 4d352e2562
commit 8212cb8b6b
1 changed files with 4 additions and 6 deletions
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10
src/mame/apple/rbv.cpp
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@ -57,9 +57,7 @@ void rbv_device::map(address_map &map)
void rbv_device::device_add_mconfig(machine_config &config)
{
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
m_screen->set_raw(25175000, 800, 0, 640, 525, 0, 480);
m_screen->set_size(1024, 768);
m_screen->set_visarea(0, 640 - 1, 0, 480 - 1);
m_screen->set_raw(30.24_MHz_XTAL, 864, 0, 640, 525, 0, 480);
m_screen->set_screen_update(FUNC(rbv_device::screen_update));
m_screen->screen_vblank().set(m_pseudovia, FUNC(pseudovia_device::slot_irq_w<0x40>));
config.set_default_layout(layout_monitors);
@ -126,20 +124,20 @@ void rbv_device::device_reset()
case 1: // 15" portrait display
m_hres = 640;
m_vres = 870;
m_screen->configure(832, 918, rectangle(0, 639, 0, 869), HZ_TO_ATTOSECONDS(74.99));
m_screen->configure(832, 918, rectangle(0, 639, 0, 869), HZ_TO_ATTOSECONDS(57.2832_MHz_XTAL / (832 * 918)));
break;
case 2: // 12" RGB
m_hres = 512;
m_vres = 384;
m_screen->configure(640, 407, rectangle(0, 511, 0, 383), HZ_TO_ATTOSECONDS(60.15));
m_screen->configure(640, 407, rectangle(0, 511, 0, 383), HZ_TO_ATTOSECONDS(31.3344_MHz_XTAL / (2 * 640 * 407)));
break;
case 6: // 13" RGB
default:
m_hres = 640;
m_vres = 480;
m_screen->configure(864, 525, rectangle(0, 639, 0, 479), HZ_TO_ATTOSECONDS(66.66));
m_screen->configure(864, 525, rectangle(0, 639, 0, 479), HZ_TO_ATTOSECONDS(30.24_MHz_XTAL / (864 * 525)));
break;
}
m_configured = true;