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(nw) qvt102: fixed crash on exit; moved attribute processing to outer loop for efficiency.

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This commit is contained in:
Robbbert 2018-11-18 12:31:08 +11:00
parent 48c0c4a269
commit 9e36dff17a
1 changed files with 18 additions and 18 deletions
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36
src/mame/drivers/qvt102.cpp
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@ -8,11 +8,12 @@
- Motorola 6800 CPU
- Hitachi HD46505 (Motorola 6845-compatible) CRTC
- Hitachi HD46850 (Motorola 6850-compatible) ACIA
- M58725P-15 (16k RAM)
- M58725P-15 (6116-compatible) (2k x 8bit RAM)
- Zilog Z8430 CTC
- 16.6698MHz Crystal
- 2x TC5514-APL + 3V battery, functioning as NVRAM
Keyboard: D8748D, 6.000, Beeper
Keyboard: D8748D, 6.000MHz Crystal, Beeper
Not sure what's going on here... the ACIA only has one serial channel,
is it for the host, the printer, or the keyboard?
@ -47,6 +48,7 @@ public:
, m_screen(*this, "screen")
, m_gfxdecode(*this, "gfxdecode")
, m_palette(*this, "palette")
, m_nvram(*this, "nvram")
, m_p_videoram(*this, "videoram")
, m_p_chargen(*this, "chargen")
{ }
@ -64,6 +66,7 @@ private:
required_device<screen_device> m_screen;
required_device<gfxdecode_device> m_gfxdecode;
required_device<palette_device> m_palette;
required_shared_ptr<uint8_t> m_nvram;
required_shared_ptr<uint8_t> m_p_videoram;
required_region_ptr<u8> m_p_chargen;
};
@ -99,23 +102,20 @@ MC6845_UPDATE_ROW( qvt102_state::crtc_update_row )
if (chr >= 0x90 && chr <= 0x9f)
attr = chr;
int half = BIT(chr, 7);
// apply attributes
if (BIT(attr, 2)) gfx = ~gfx; // reverse
if (BIT(attr, 1) && (m_screen->frame_number() & 32)) gfx = 0; // blink (frequency?)
if (BIT(attr, 0)) gfx = 0; // blank
if (BIT(attr, 3) && ra == 11) gfx = 0x1ff; // underline
// cursor active?
if (x == cursor_x) gfx = ~gfx;
// draw 9 pixels of the character
for (int i = 0; i < 9; i++)
{
int pixel = BIT(gfx, i);
int half = BIT(chr, 7);
// apply attributes
if (BIT(attr, 2)) pixel ^= 1; // reverse
if (BIT(attr, 1) && (m_screen->frame_number() & 32)) pixel ^= 1; // blink (frequency?)
if (BIT(attr, 0)) pixel = 0; // blank
if (BIT(attr, 3) && ra == 11) pixel = 1; // underline
// cursor active?
if (x == cursor_x) pixel ^= 1;
bitmap.pix32(y, x*9 + (8-i)) = palette[pixel ? 2 - half : 0];
}
bitmap.pix32(y, x*9 + (8-i)) = palette[BIT(gfx, i) ? 2 - half : 0];
}
}
@ -147,7 +147,7 @@ void qvt102_state::qvt102(machine_config &config)
m_screen->set_raw(MASTER_CLOCK, 882, 9, 729, 315, 0, 300); // 80x24+1
m_screen->set_screen_update("crtc", FUNC(mc6845_device::screen_update));
PALETTE(config, m_palette, 2).set_init("palette", FUNC(palette_device::palette_init_monochrome_highlight));
PALETTE(config, m_palette, 3).set_init("palette", FUNC(palette_device::palette_init_monochrome_highlight));
GFXDECODE(config, m_gfxdecode, m_palette, chars);
H46505(config, m_crtc, MASTER_CLOCK / 9);