mirror of
https://github.com/holub/mame
synced 2025-04-26 10:13:37 +03:00
in213: Major rendering updates
- Add support for scrolling - Implement per character attributes - Custom cursor shapes and blinking
This commit is contained in:
Dirk Best
parent
389cb5a6f4
commit
c515982156
@ -67,8 +67,12 @@ private:
|
||||
|
||||
uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
|
||||
void vblank_w(int state);
|
||||
void vram_addr_w(offs_t offset, uint8_t data);
|
||||
void vram_start_addr_w(offs_t offset, uint8_t data);
|
||||
void vram_end_addr_w(offs_t offset, uint8_t data);
|
||||
void vram_start_addr2_w(offs_t offset, uint8_t data);
|
||||
void cursor_addr_w(offs_t offset, uint8_t data);
|
||||
void cursor_start_w(uint8_t data);
|
||||
void cursor_end_w(uint8_t data);
|
||||
void screen_ctrl_w(uint8_t data);
|
||||
|
||||
uint8_t unk_42_r();
|
||||
@ -79,7 +83,11 @@ private:
|
||||
void kbd_int_w(int state);
|
||||
uint8_t vector_r();
|
||||
|
||||
uint16_t m_vram_addr;
|
||||
uint16_t m_vram_start_addr;
|
||||
uint16_t m_vram_end_addr;
|
||||
uint16_t m_vram_start_addr2;
|
||||
uint8_t m_cursor_start;
|
||||
uint8_t m_cursor_end;
|
||||
uint16_t m_cursor_addr;
|
||||
uint8_t m_screen_ctrl;
|
||||
uint8_t m_unk_42;
|
||||
@ -94,7 +102,11 @@ private:
|
||||
void informer_213_state::mem_map(address_map &map)
|
||||
{
|
||||
map(0x0000, 0x0000).rw("kbd", FUNC(informer_213_kbd_hle_device::read), FUNC(informer_213_kbd_hle_device::write));
|
||||
map(0x0006, 0x0007).unmapr().w(FUNC(informer_213_state::vram_addr_w));
|
||||
map(0x0006, 0x0007).unmapr().w(FUNC(informer_213_state::vram_start_addr_w));
|
||||
map(0x0008, 0x0009).unmapr().w(FUNC(informer_213_state::vram_end_addr_w));
|
||||
map(0x000a, 0x000b).unmapr().w(FUNC(informer_213_state::vram_start_addr2_w));
|
||||
map(0x000d, 0x000d).unmapr().w(FUNC(informer_213_state::cursor_start_w));
|
||||
map(0x000e, 0x000e).unmapr().w(FUNC(informer_213_state::cursor_end_w));
|
||||
map(0x000f, 0x0010).unmapr().w(FUNC(informer_213_state::cursor_addr_w));
|
||||
map(0x0021, 0x0021).w(FUNC(informer_213_state::screen_ctrl_w));
|
||||
map(0x0042, 0x0042).rw(FUNC(informer_213_state::unk_42_r), FUNC(informer_213_state::unk_42_w));
|
||||
@ -124,6 +136,9 @@ INPUT_PORTS_END
|
||||
uint32_t informer_213_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
|
||||
{
|
||||
offs_t chargen_base = (m_chargen.bytes() == 0x4000) ? 0x2000 : 0;
|
||||
|
||||
// line at which vram splits into two windows
|
||||
int split = 24 - ((m_vram_start_addr2 - m_vram_start_addr) / 80);
|
||||
|
||||
for (int y = 0; y < 26; y++)
|
||||
{
|
||||
@ -131,17 +146,19 @@ uint32_t informer_213_state::screen_update(screen_device &screen, bitmap_rgb32 &
|
||||
|
||||
for (int x = 0; x < 80; x++)
|
||||
{
|
||||
uint16_t addr = m_vram_addr + y * 80 + x;
|
||||
uint16_t addr;
|
||||
|
||||
// vram is split into 3 areas: display window 1, display window 2, status bar
|
||||
if (y >= 24)
|
||||
addr = 0x6000 + (y - 24) * 80 + x;
|
||||
else if (y >= split)
|
||||
addr = m_vram_start_addr + (y - split) * 80 + x;
|
||||
else
|
||||
addr = m_vram_start_addr2 + y * 80 + x;
|
||||
|
||||
uint8_t code = m_vram[addr - 0x6000];
|
||||
uint8_t attr = m_aram[addr - 0x6000];
|
||||
|
||||
// status line is at top of vram
|
||||
if (y > 23)
|
||||
{
|
||||
code = m_vram[(y - 24) * 80 + x];
|
||||
attr = m_aram[(y - 24) * 80 + x];
|
||||
}
|
||||
|
||||
if (code == 0xc0 || code == 0xe8)
|
||||
line_attr = attr;
|
||||
|
||||
@ -150,11 +167,21 @@ uint32_t informer_213_state::screen_update(screen_device &screen, bitmap_rgb32 &
|
||||
{
|
||||
uint8_t data = m_chargen[chargen_base | ((code << 4) + i)];
|
||||
|
||||
if (addr == m_cursor_addr)
|
||||
// conceal
|
||||
if (line_attr & 0x08 || attr & 0x08)
|
||||
data = 0x00;
|
||||
|
||||
// reverse video
|
||||
if (line_attr & 0x10 || attr & 0x10)
|
||||
data ^= 0xff;
|
||||
|
||||
if (line_attr == 0xb0 || line_attr == 0x90)
|
||||
data ^= 0xff;
|
||||
// underline (not supported by terminal?)
|
||||
if (line_attr & 0x20 || attr & 0x20)
|
||||
data = data;
|
||||
|
||||
// blink (todo: timing)
|
||||
if (line_attr & 0x40 || attr & 0x40)
|
||||
data = m_screen->frame_number() & 0x20 ? 0x00 :data;
|
||||
|
||||
if (code == 0xc0 || code == 0xe8)
|
||||
data = 0;
|
||||
@ -162,6 +189,12 @@ uint32_t informer_213_state::screen_update(screen_device &screen, bitmap_rgb32 &
|
||||
if (BIT(m_screen_ctrl, 5))
|
||||
data ^= 0xff;
|
||||
|
||||
// cursor
|
||||
if (BIT(m_cursor_start, 5) == 1 && addr == m_cursor_addr && y < 24)
|
||||
if (i >= (m_cursor_start & 0x0f) && i < (m_cursor_end & 0x0f))
|
||||
if (!(BIT(m_screen_ctrl, 4) == 0 && (m_screen->frame_number() & 0x20)))
|
||||
data = 0xff;
|
||||
|
||||
// 6 pixels of the character
|
||||
bitmap.pix32(y * 9 + i, x * 6 + 0) = BIT(data, 7) ? rgb_t::white() : rgb_t::black();
|
||||
bitmap.pix32(y * 9 + i, x * 6 + 1) = BIT(data, 6) ? rgb_t::white() : rgb_t::black();
|
||||
@ -176,12 +209,59 @@ uint32_t informer_213_state::screen_update(screen_device &screen, bitmap_rgb32 &
|
||||
return 0;
|
||||
}
|
||||
|
||||
void informer_213_state::vram_addr_w(offs_t offset, uint8_t data)
|
||||
void informer_213_state::vram_start_addr_w(offs_t offset, uint8_t data)
|
||||
{
|
||||
if (offset)
|
||||
m_vram_addr = (m_vram_addr & 0xff00) | (data << 0);
|
||||
m_vram_start_addr = (m_vram_start_addr & 0xff00) | (data << 0);
|
||||
else
|
||||
m_vram_addr = (m_vram_addr & 0x00ff) | (data << 8);
|
||||
m_vram_start_addr = (m_vram_start_addr & 0x00ff) | (data << 8);
|
||||
|
||||
if (offset)
|
||||
logerror("vram_start_addr_w: %04x\n", m_vram_start_addr);
|
||||
}
|
||||
|
||||
void informer_213_state::vram_end_addr_w(offs_t offset, uint8_t data)
|
||||
{
|
||||
if (offset)
|
||||
m_vram_end_addr = (m_vram_end_addr & 0xff00) | (data << 0);
|
||||
else
|
||||
m_vram_end_addr = (m_vram_end_addr & 0x00ff) | (data << 8);
|
||||
|
||||
if (offset)
|
||||
logerror("vram_end_addr_w: %04x\n", m_vram_end_addr);
|
||||
}
|
||||
|
||||
void informer_213_state::vram_start_addr2_w(offs_t offset, uint8_t data)
|
||||
{
|
||||
if (offset)
|
||||
m_vram_start_addr2 = (m_vram_start_addr2 & 0xff00) | (data << 0);
|
||||
else
|
||||
m_vram_start_addr2 = (m_vram_start_addr2 & 0x00ff) | (data << 8);
|
||||
|
||||
if (offset)
|
||||
logerror("vram_start_addr2_w: %04x\n", m_vram_start_addr2);
|
||||
}
|
||||
|
||||
void informer_213_state::cursor_start_w(uint8_t data)
|
||||
{
|
||||
logerror("cursor_start_w: %02x\n", data);
|
||||
|
||||
// 76------ unknown
|
||||
// --5----- cursor visible
|
||||
// ---4---- unknown
|
||||
// ----3210 cursor starting line, values seen: 0 (block/off), 6 (underline)
|
||||
|
||||
m_cursor_start = data;
|
||||
}
|
||||
|
||||
void informer_213_state::cursor_end_w(uint8_t data)
|
||||
{
|
||||
logerror("cursor_end_w: %02x\n", data);
|
||||
|
||||
// 7654---- unknown
|
||||
// ----3210 cursor ending line, values seen: 9 (block), 8 (underline), 1 (off)
|
||||
|
||||
m_cursor_end = data;
|
||||
}
|
||||
|
||||
void informer_213_state::cursor_addr_w(offs_t offset, uint8_t data)
|
||||
@ -190,6 +270,9 @@ void informer_213_state::cursor_addr_w(offs_t offset, uint8_t data)
|
||||
m_cursor_addr = (m_cursor_addr & 0xff00) | (data << 0);
|
||||
else
|
||||
m_cursor_addr = (m_cursor_addr & 0x00ff) | (data << 8);
|
||||
|
||||
if (offset)
|
||||
logerror("cursor_addr_w: %04x\n", m_cursor_addr);
|
||||
}
|
||||
|
||||
void informer_213_state::screen_ctrl_w(uint8_t data)
|
||||
@ -273,7 +356,9 @@ uint8_t informer_213_state::vector_r()
|
||||
void informer_213_state::machine_start()
|
||||
{
|
||||
// register for save states
|
||||
save_item(NAME(m_vram_addr));
|
||||
save_item(NAME(m_vram_start_addr));
|
||||
save_item(NAME(m_vram_start_addr2));
|
||||
save_item(NAME(m_vram_end_addr));
|
||||
save_item(NAME(m_cursor_addr));
|
||||
save_item(NAME(m_screen_ctrl));
|
||||
save_item(NAME(m_unk_42));
|
||||
|
||||
Loading…
Reference in New Issue
Block a user