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act5a: Start implementing attributes (nw)

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This commit is contained in:
AJR 2018-08-09 18:39:18 -04:00
parent 5efb36ab78
commit 06cd023a09
1 changed files with 26 additions and 11 deletions
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37
src/mame/drivers/microterm_f8.cpp
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@ -29,6 +29,7 @@ public:
, m_kbdecode(*this, "kbdecode")
, m_chargen(*this, "chargen")
, m_keys(*this, "KEY%u", 0U)
, m_dsw(*this, "DSW%u", 1U)
, m_modifiers(*this, "MODIFIERS")
, m_special(*this, "SPECIAL")
{ }
@ -65,13 +66,14 @@ private:
required_region_ptr<u8> m_kbdecode;
required_region_ptr<u8> m_chargen;
required_ioport_array<11> m_keys;
required_ioport_array<3> m_dsw;
required_ioport m_modifiers;
required_ioport m_special;
u8 m_port00;
u8 m_keylatch;
u8 m_scroll;
std::unique_ptr<u8[]> m_vram;
std::unique_ptr<u16[]> m_vram;
};
void microterm_f8_state::machine_start()
@ -79,29 +81,32 @@ void microterm_f8_state::machine_start()
m_port00 = 0;
m_keylatch = 0;
m_scroll = 0;
m_vram = make_unique_clear<u8[]>(0xc00); // 6x MM2114 with weird addressing
m_vram = make_unique_clear<u16[]>(0x800); // 6x MM2114 with weird addressing
save_item(NAME(m_port00));
save_item(NAME(m_keylatch));
save_item(NAME(m_scroll));
save_pointer(NAME(m_vram), 0xc00);
save_pointer(NAME(m_vram), 0x800);
}
u32 microterm_f8_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
unsigned y = cliprect.top();
offs_t rowbase = ((y / 12) + m_scroll) % 24 * 0x80;
offs_t rowbase = (((y / 12) + m_scroll) % 24) * 80;
unsigned line = y % 12;
if (line >= 6)
line += 2;
while (y <= cliprect.bottom())
{
const bool allow_underline = line == 13;
for (unsigned x = cliprect.left(); x <= cliprect.right(); x++)
{
u8 ch = m_vram[rowbase + (x / 9)];
u8 dots = m_chargen[(line << 7) | (ch & 0x7f)];
bitmap.pix32(y, x) = BIT(dots, 8 - (x % 9)) ? rgb_t::white() : rgb_t::black();
u16 ch = m_vram[rowbase + (x / 9)];
u8 chdata = m_chargen[(line << 7) | (ch & 0x7f)];
bool dot = (!BIT(ch, 8) && allow_underline) || BIT(chdata, 8 - (x % 9));
bitmap.pix32(y, x) = dot ? rgb_t::white() : rgb_t::black();
}
y++;
@ -111,8 +116,8 @@ u32 microterm_f8_state::screen_update(screen_device &screen, bitmap_rgb32 &bitma
line = (line + 2) & 15;
if (line == 0)
{
rowbase += 0x80;
if (rowbase == 24 * 0x80)
rowbase += 80;
if (rowbase == 24 * 80)
rowbase = 0;
}
}
@ -148,12 +153,18 @@ WRITE8_MEMBER(microterm_f8_state::scroll_w)
READ8_MEMBER(microterm_f8_state::vram_r)
{
return m_vram[(offset & 0x1f00) >> 1 | (offset & 0x007f)];
offs_t vaddr = (offset >> 8) * 80 + (offset & 0x007f);
assert(vaddr < 0x800);
if ((m_port00 & 0x05) == 0 && !machine().side_effects_disabled())
m_port00 = (m_port00 & 0x0f) | ((m_vram[vaddr] >> 4) & 0xf0);
return m_vram[vaddr] & 0xff;
}
WRITE8_MEMBER(microterm_f8_state::vram_w)
{
m_vram[(offset & 0x1f00) >> 1 | (offset & 0x007f)] = data;
offs_t vaddr = (offset >> 8) * 80 + (offset & 0x007f);
assert(vaddr < 0x800);
m_vram[vaddr] = data | (m_port00 & 0xf0) << 4;
}
bool microterm_f8_state::poll_keyboard()
@ -214,6 +225,9 @@ READ8_MEMBER(microterm_f8_state::port01_r)
if (!m_screen->vblank())
flags |= 0x20;
// Protected field setting
flags |= ~m_dsw[2]->read() & 0x06;
return flags;
}
@ -223,6 +237,7 @@ void microterm_f8_state::f8_mem(address_map &map)
map(0x0c00, 0x0c00).r(FUNC(microterm_f8_state::bell_r));
map(0x2000, 0x2000).mirror(0x1fff).w(FUNC(microterm_f8_state::scroll_w));
map(0x4000, 0x407f).select(0x1f00).rw(FUNC(microterm_f8_state::vram_r), FUNC(microterm_f8_state::vram_w));
map(0x5800, 0x5fff).unmaprw();
map(0x8000, 0x8000).rw(m_uart, FUNC(ay51013_device::receive), FUNC(ay51013_device::transmit));
map(0xf000, 0xf000).r(FUNC(microterm_f8_state::key_r));
}