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wy50: Add character dimming and protected attributes (nw)

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This commit is contained in:
AJR 2019-02-11 00:44:44 -05:00
parent 5a24c7a735
commit 23a34aa801
1 changed files with 24 additions and 7 deletions
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31
src/mame/drivers/wy50.cpp
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@ -81,6 +81,8 @@ private:
u8 m_cur_attr;
u8 m_last_row_attr;
u8 m_row_buffer_char;
bool m_font2;
bool m_rev_prot;
bool m_is_132;
};
@ -89,11 +91,15 @@ void wy50_state::machine_start()
m_cur_attr = 0;
m_last_row_attr = 0;
m_row_buffer_char = 0;
m_font2 = false;
m_rev_prot = false;
m_is_132 = false;
save_item(NAME(m_cur_attr));
save_item(NAME(m_last_row_attr));
save_item(NAME(m_row_buffer_char));
save_item(NAME(m_font2));
save_item(NAME(m_rev_prot));
save_item(NAME(m_is_132));
}
@ -112,6 +118,7 @@ u8 wy50_state::pvtc_videoram_r(offs_t offset)
SCN2672_DRAW_CHARACTER_MEMBER(wy50_state::draw_character)
{
const bool attr = (charcode & 0xe0) == 0x80;
const bool prot = (charcode & 0xe0) > 0x80 && !m_font2;
if (attr)
m_cur_attr = charcode & 0x1f;
else if (x == 0)
@ -123,20 +130,26 @@ SCN2672_DRAW_CHARACTER_MEMBER(wy50_state::draw_character)
else if (BIT(m_cur_attr, 3) && ul)
dots = 0x3ff;
else
dots = m_chargen[charcode << 4 | linecount] << 2;
dots = m_chargen[(charcode & (m_font2 ? 0xff : 0x7f)) << 4 | linecount] << 2;
if (!attr && BIT(m_cur_attr, 4))
dots = ~dots;
if (!attr)
{
if (BIT(m_cur_attr, 4))
dots = ~dots;
if (prot && m_rev_prot)
dots = ~dots;
}
if (cursor)
dots = ~dots;
const rgb_t fg = BIT(m_cur_attr, 0) || (prot && !m_rev_prot) ? rgb_t(0xc0, 0xc0, 0xc0) : rgb_t::white();
for (int i = 0; i < 9; i++)
{
bitmap.pix32(y, x++) = BIT(dots, 9) ? rgb_t::white() : rgb_t::black();
bitmap.pix32(y, x++) = BIT(dots, 9) ? fg : rgb_t::black();
dots <<= 1;
}
if (!m_is_132)
bitmap.pix32(y, x++) = BIT(dots, 9) ? rgb_t::white() : rgb_t::black();
bitmap.pix32(y, x++) = BIT(dots, 9) ? fg : rgb_t::black();
}
WRITE_LINE_MEMBER(wy50_state::mbc_attr_clock_w)
@ -177,12 +190,14 @@ void wy50_state::keyboard_w(u8 data)
void wy50_state::earom_w(u8 data)
{
// Bit 5 = UPCHAR/NORM
m_earom->clock_w(BIT(data, 1));
m_earom->c3_w(BIT(data, 2));
m_earom->c2_w(BIT(data, 3));
m_earom->c1_w(BIT(data, 4));
m_earom->data_w(BIT(data, 3) ? BIT(data, 0) : 0);
// Bit 5 = UPCHAR/NORM
m_font2 = BIT(data, 5);
}
u8 wy50_state::p1_r()
@ -201,11 +216,13 @@ void wy50_state::p1_w(u8 data)
// P1.6 = REV/DIM PROT
// P1.7 (inverted) = 80/132
m_rev_prot = BIT(data, 6);
if (m_is_132 != BIT(data, 7))
{
m_is_132 = BIT(data, 7);
m_pvtc->set_character_width(m_is_132 ? 9 : 10);
m_pvtc->set_unscaled_clock(68.85_MHz_XTAL / (m_is_132 ? 20 : 30));
m_pvtc->set_unscaled_clock(68.85_MHz_XTAL / (m_is_132 ? 18 : 30));
}
}