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hp9845: alpha video test "B" fixed

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This commit is contained in:
fulivi 2016-03-06 16:32:29 +01:00
parent fec7ca2075
commit 241b732ea7
1 changed files with 11 additions and 4 deletions
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15
src/mame/drivers/hp9845.cpp
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@ -44,7 +44,10 @@
// Base address of video buffer
#define VIDEO_BUFFER_BASE 0x17000
#define MAX_WORD_PER_ROW 600
// For test "B" of alpha video to succeed this must be < 234
// Basically "B" test is designed to intentionally prevent line buffer to be filled so that display is blanked
// from 2nd row on. This in turn prevents "BAD" text to be visible on screen.
#define MAX_WORD_PER_ROW 220
#define VIDEO_CHAR_WIDTH 9
#define VIDEO_CHAR_HEIGHT 15
@ -412,10 +415,14 @@ void hp9845b_state::video_render_buff(unsigned line_in_row, bool buff_idx)
m_video_blanked = true;
}
if (m_video_blanked) {
// TODO: blank scanline
} else {
const rgb_t *palette = m_palette->palette()->entry_list_raw();
if (m_video_blanked) {
// Blank scanline
for (unsigned i = 0; i < (80 * 9); i++) {
m_bitmap.pix32(m_video_scanline , i) = palette[ 0 ];
}
} else {
bool cursor_line = line_in_row == 12;
bool ul_line = line_in_row == 14;
bool cursor_blink = BIT(m_video_frame , 3);