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hp9845: Small re-factoring of 45B screen palette

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fulivi 2017-02-20 11:14:50 +01:00 committed by Vas Crabb
parent e8e0285c74
commit 93db554bfa
1 changed files with 18 additions and 5 deletions
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23
src/mame/drivers/hp9845.cpp
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@ -90,6 +90,13 @@
#define I_CU 0xf0 // graphics cursor intensity
#define I_LP 0xff // light pen cursor intensity
// Palette indexes (for monochromatic screens)
#define PEN_BLACK 0 // Black
#define PEN_GRAPHIC 1 // Graphics
#define PEN_ALPHA 2 // Text
#define PEN_CURSOR 3 // Graphic cursor
#define PEN_LP 4 // Light pen cursor
#define T15_PA 15
#define KEY_SCAN_OSCILLATOR 327680
@ -716,6 +723,12 @@ void hp9845b_state::machine_start()
hp9845_base_state::machine_start();
m_graphic_mem.resize(GVIDEO_MEM_SIZE);
// initialize palette
m_palette->set_pen_color(PEN_BLACK , 0x00, 0x00, 0x00); // black
m_palette->set_pen_color(PEN_GRAPHIC, 0x00, I_GR, 0x00); // graphics
m_palette->set_pen_color(PEN_ALPHA , 0x00, I_AL, 0x00); // alpha
m_palette->set_pen_color(PEN_CURSOR , 0x00, I_CU, 0x00); // graphics cursor
}
void hp9845b_state::machine_reset()
@ -862,7 +875,7 @@ void hp9845b_state::video_render_buff(unsigned video_scanline , unsigned line_in
if (m_video_blanked) {
// Blank scanline
for (unsigned i = 0; i < VIDEO_HBSTART; i++) {
m_bitmap.pix32(video_scanline , i) = pen[ 0 ];
m_bitmap.pix32(video_scanline , i) = pen[ PEN_BLACK ];
}
} else {
bool cursor_line = line_in_row == 12;
@ -895,7 +908,7 @@ void hp9845b_state::video_render_buff(unsigned video_scanline , unsigned line_in
for (unsigned j = 0; j < 9; j++) {
bool pixel = (pixels & (1U << j)) != 0;
m_bitmap.pix32(video_scanline , i * 9 + j) = pen[ pixel ? 1 : 0 ];
m_bitmap.pix32(video_scanline , i * 9 + j) = pen[ pixel ? PEN_ALPHA : PEN_BLACK ];
}
}
}
@ -930,10 +943,10 @@ void hp9845b_state::graphic_video_render(unsigned video_scanline)
unsigned pixel;
if (blink && ((xw && yc) || (yw && xc && m_gv_cursor_gc))) {
// Cursor
pixel = 2;
pixel = PEN_CURSOR;
} else {
// Normal pixel
pixel = (word & mask) != 0;
pixel = (word & mask) != 0 ? PEN_GRAPHIC : PEN_BLACK;
}
m_bitmap.pix32(video_scanline - GVIDEO_VBEND , x++) = pen[ pixel ];
}
@ -1284,7 +1297,7 @@ static MACHINE_CONFIG_START(hp9845b, hp9845b_state)
MCFG_SCREEN_COLOR(rgb_t::green())
// These parameters are for alpha video
MCFG_SCREEN_RAW_PARAMS(VIDEO_PIXEL_CLOCK , VIDEO_HTOTAL , 0 , VIDEO_HBSTART , VIDEO_VTOTAL , 0 , VIDEO_ACTIVE_SCANLINES)
MCFG_PALETTE_ADD_MONOCHROME_HIGHLIGHT("palette")
MCFG_PALETTE_ADD("palette", 4)
MCFG_TIMER_DRIVER_ADD_SCANLINE("scantimer", hp9845b_state, scanline_timer, "screen", 0, 1)
MCFG_DEFAULT_LAYOUT(layout_hp9845b)