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act5a: Start drawing characters on screen (nw)

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This commit is contained in:
AJR 2018-08-08 20:59:05 -04:00
parent be66d45fab
commit 434e34f424
1 changed files with 29 additions and 4 deletions
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33
src/mame/drivers/microterm_f8.cpp
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@ -77,6 +77,31 @@ void microterm_f8_state::machine_start()
u32 microterm_f8_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
unsigned y = cliprect.top();
offs_t rowbase = (y / 12) * 0x80;
unsigned line = y % 12;
if (line >= 6)
line += 2;
while (y <= cliprect.bottom())
{
for (unsigned x = cliprect.left(); x <= cliprect.right(); x++)
{
u8 ch = m_vram[rowbase + (x / 9)];
u8 dots = m_chargen[(line << 7) | (ch & 0x7f)];
bitmap.pix32(y, x) = BIT(dots, 8 - (x % 9)) ? rgb_t::white() : rgb_t::black();
}
y++;
line++;
if ((line & 7) >= 6)
{
line = (line + 2) & 15;
if (line == 0)
rowbase += 0x80;
}
}
return 0;
}
@ -356,7 +381,7 @@ void microterm_f8_state::act5a(machine_config &config)
RS232_PORT(config, m_aux, default_rs232_devices, nullptr);
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_raw(16.572_MHz_XTAL, 1080, 0, 800, 256, 0, 240); // more or less guessed
screen.set_raw(16.572_MHz_XTAL, 918, 0, 720, 301, 0, 288); // more or less guessed
screen.set_screen_update(FUNC(microterm_f8_state::screen_update));
}
@ -373,6 +398,6 @@ ROM_START(act5a)
ROM_LOAD("act5a_9316.u55", 0x0000, 0x2000, CRC(8f96b7c8) SHA1(652d420ab5be9412cae322cd1799f8a9e3959c44))
ROM_END
//COMP(1976, act4, 0, 0, act5a, act5a, microterm_f8_state, empty_init, "Micro-Term", "ACT-IV", MACHINE_IS_SKELETON)
//COMP(1978, act5, 0, 0, act5a, act5a, microterm_f8_state, empty_init, "Micro-Term", "ACT-V", MACHINE_IS_SKELETON)
COMP(1980, act5a, 0, 0, act5a, act5a, microterm_f8_state, empty_init, "Micro-Term", "ACT-5A", MACHINE_IS_SKELETON)
//COMP(1976, act4, 0, 0, act5a, act5a, microterm_f8_state, empty_init, "Micro-Term", "ACT-IV", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
//COMP(1978, act5, 0, 0, act5a, act5a, microterm_f8_state, empty_init, "Micro-Term", "ACT-V", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
COMP(1980, act5a, 0, 0, act5a, act5a, microterm_f8_state, empty_init, "Micro-Term", "ACT-5A", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)