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nec/pc9801_v.cpp: reverse attribute will draw opaque on Y char limit

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* fix daremo intro
This commit is contained in:
angelosa 2024-10-17 18:24:09 +02:00
parent 5f4e3730d9
commit e05e355a12
1 changed files with 7 additions and 4 deletions
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11
src/mame/nec/pc9801_v.cpp
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@ -96,6 +96,8 @@ void pc9801_state::draw_text(bitmap_rgb32 &bitmap, uint32_t addr, int y, int wd,
int scroll_end = scroll_start + m_txt_scroll_reg[5];
int scroll = m_txt_scroll_reg[3] % 20;
int line = y / lr;
// TODO: accurate blink rate
const bool is_blink_rate = m_screen->frame_number() & 0x10;
for(int x=0;x<pitch;x+=x_step)
{
@ -223,18 +225,19 @@ void pc9801_state::draw_text(bitmap_rgb32 &bitmap, uint32_t addr, int y, int wd,
}
if(v_line) { tile_data|=8; }
/* TODO: proper blink rate for these two */
if(cursor_on && cursor_addr == tile_addr && m_screen->frame_number() & 0x10)
if(cursor_on && cursor_addr == tile_addr && is_blink_rate)
tile_data^=0xff;
if(blink && m_screen->frame_number() & 0x10)
if(blink && is_blink_rate)
tile_data = 0;
if(reverse) { tile_data^=0xff; }
int pen;
// daremo wants to mask during intro with reverse attribute only
// using color is a guess: may just be black.
if(yi >= char_size)
pen = -1;
pen = reverse ? color : -1;
else
pen = (tile_data >> (7-xi) & 1) ? color : -1;