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(nw) lola8a : use shared pointer for display

master
Robbbert 2017-11-09 23:34:10 +11:00
parent 24fc3d9f83
commit 79b7cb5746
1 changed files with 28 additions and 19 deletions
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47
src/mame/drivers/lola8a.cpp
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@ -17,6 +17,10 @@
DLOAD DSAVE DVERIFY MERGE CAT RUN NEW ON LIST DEF MON GWIND TWIND UNDER
SPC OFF TAB THEN TO STEP AND OR XOR NOT ABS LEN SQR INT ASC CHR VAL STR MID
ARG CALL RND LEFT RIGHT DOT SGN SIN FREE PI FN TAN COS POP PEEK INP LN EXP ATN
COLOUR x (x = 0 to 3) there's no known colour ram, unable to determine
how colours can be displayed. Therefore we only show black and white.
****************************************************************************/
#include "emu.h"
@ -39,28 +43,26 @@ public:
lola8a_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_cass(*this, "cassette"),
m_palette(*this, "palette")
, m_cass(*this, "cassette")
, m_palette(*this, "palette")
, m_p_videoram(*this, "videoram")
{ }
required_device<cpu_device> m_maincpu;
virtual void machine_reset() override { m_maincpu->set_pc(0x8000); }
DECLARE_READ8_MEMBER(lola8a_port_a_r);
DECLARE_WRITE8_MEMBER(lola8a_port_b_w);
DECLARE_WRITE_LINE_MEMBER(crtc_vsync);
DECLARE_READ_LINE_MEMBER(cass_r);
DECLARE_WRITE_LINE_MEMBER(cass_w);
DECLARE_READ8_MEMBER(keyboard_r);
MC6845_UPDATE_ROW(crtc_update_row);
private:
uint8_t m_portb;
virtual void machine_reset() override { m_maincpu->set_pc(0x8000); }
required_device<cpu_device> m_maincpu;
required_device<cassette_image_device> m_cass;
public:
required_device<palette_device> m_palette;
required_shared_ptr<uint8_t> m_p_videoram;
};
static ADDRESS_MAP_START(lola8a_mem, AS_PROGRAM, 8, lola8a_state)
@ -72,7 +74,7 @@ static ADDRESS_MAP_START(lola8a_mem, AS_PROGRAM, 8, lola8a_state)
AM_RANGE( 0x8000, 0x9fff ) AM_ROM // 2764A at B45
AM_RANGE( 0xa000, 0xbfff ) AM_ROM // 2764A at C45
AM_RANGE( 0xc000, 0xdfff ) AM_ROM // 2764A at H67
AM_RANGE( 0xe000, 0xffff ) AM_RAM // 6264 at G67
AM_RANGE( 0xe000, 0xffff ) AM_RAM AM_SHARE("videoram") // 6264 at G67
ADDRESS_MAP_END
static ADDRESS_MAP_START(lola8a_io, AS_IO, 8, lola8a_state)
@ -191,22 +193,29 @@ INPUT_PORTS_END
MC6845_UPDATE_ROW( lola8a_state::crtc_update_row )
{
address_space &program = m_maincpu->space(AS_PROGRAM);
const rgb_t *palette = m_palette->palette()->entry_list_raw();
u8 x,gfx;
u16 mem;
u32 *p = &bitmap.pix32(y);
ma &= 0x7ff;
for (int sx = 0; sx < x_count; sx++)
for (x = 0; x < x_count; x++)
{
uint16_t addr = 0xa000 + sx*8 + ra + ma * 8;
uint8_t code = program.read_byte(addr);
mem = (x+ma)*8 + ra;
gfx = m_p_videoram[mem] ^ ((cursor_x == x) ? 0xff : 0);
for (int x = 0; x <= 8; x++)
{
int color = BIT(code, 7-x) ? 7 : 0;
if (cursor_x==sx) color = 7;
bitmap.pix32(y, x + sx*8) = m_palette->pen_color(color);
}
*p++ = palette[BIT(gfx, 7) ? 7 : 0];
*p++ = palette[BIT(gfx, 6) ? 7 : 0];
*p++ = palette[BIT(gfx, 5) ? 7 : 0];
*p++ = palette[BIT(gfx, 4) ? 7 : 0];
*p++ = palette[BIT(gfx, 3) ? 7 : 0];
*p++ = palette[BIT(gfx, 2) ? 7 : 0];
*p++ = palette[BIT(gfx, 1) ? 7 : 0];
*p++ = palette[BIT(gfx, 0) ? 7 : 0];
}
}
READ8_MEMBER(lola8a_state::lola8a_port_a_r)
{
logerror("lola8a_port_a_r\n");