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Improved i/o handling a bit

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This commit is contained in:
Angelo Salese 2013-10-23 16:46:29 +00:00
parent 8788fa1d58
commit 9c77d9332e
2 changed files with 91 additions and 82 deletions
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1
src/mess/includes/gamecom.h
View File

@ -256,6 +256,7 @@ public:
UINT8 m_lch_reg;
UINT8 m_lcv_reg;
void recompute_lcd_params();
void handle_input_press(UINT16 mux_data);
UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
DECLARE_DRIVER_INIT(gamecom);

172
src/mess/machine/gamecom.c
View File

@ -86,94 +86,102 @@ void gamecom_state::handle_stylus_press( int column )
}
}
void gamecom_state::handle_input_press(UINT16 mux_data)
{
switch( mux_data )
{
case 0xFFFB:
/* column #0 */
/* P0 bit 0 cleared => 01 */
/* P0 bit 1 cleared => 0E */
/* P0 bit 2 cleared => 1B */
/* P0 bit 3 cleared => etc */
/* P0 bit 4 cleared => */
/* P0 bit 5 cleared => */
/* P0 bit 6 cleared => */
/* P0 bit 7 cleared => */
/* P1 bit 0 cleared => */
/* P1 bit 1 cleared => */
handle_stylus_press(0);
break;
case 0xFFF7: /* column #1 */
handle_stylus_press(1);
break;
case 0xFFEF: /* column #2 */
handle_stylus_press(2);
break;
case 0xFFDF: /* column #3 */
handle_stylus_press(3);
break;
case 0xFFBF: /* column #4 */
handle_stylus_press(4);
break;
case 0xFF7F: /* column #5 */
handle_stylus_press(5);
break;
case 0xFEFF: /* column #6 */
handle_stylus_press(6);
break;
case 0xFDFF: /* column #7 */
handle_stylus_press(7);
break;
case 0xFBFF: /* column #8 */
handle_stylus_press(8);
break;
case 0xF7FF: /* column #9 */
handle_stylus_press(9);
break;
case 0xEFFF: /* column #10 */
handle_stylus_press(10);
break;
case 0xDFFF: /* column #11 */
handle_stylus_press(11);
break;
case 0xBFFF: /* column #12 */
handle_stylus_press(12);
break;
case 0x7FFF: /* keys #1 */
/* P0 bit 0 cleared => 83 (up) */
/* P0 bit 1 cleared => 84 (down) */
/* P0 bit 2 cleared => 85 (left) */
/* P0 bit 3 cleared => 86 (right) */
/* P0 bit 4 cleared => 87 (menu) */
/* P0 bit 5 cleared => 8A (pause) */
/* P0 bit 6 cleared => 89 (sound) */
/* P0 bit 7 cleared => 8B (button A) */
/* P1 bit 0 cleared => 8C (button B) */
/* P1 bit 1 cleared => 8D (button C) */
m_p_ram[SM8521_P0] = m_io_in0->read();
m_p_ram[SM8521_P1] = (m_p_ram[SM8521_P1] & 0xFC) | ( m_io_in1->read() & 3 );
break;
case 0xFFFF: /* keys #2 */
/* P0 bit 0 cleared => 88 (power) */
/* P0 bit 1 cleared => 8E (button D) */
/* P0 bit 2 cleared => A0 */
/* P0 bit 3 cleared => A0 */
/* P0 bit 4 cleared => A0 */
/* P0 bit 5 cleared => A0 */
/* P0 bit 6 cleared => A0 */
/* P0 bit 7 cleared => A0 */
/* P1 bit 0 cleared => A0 */
/* P1 bit 1 cleared => A0 */
m_p_ram[SM8521_P0] = (m_p_ram[SM8521_P0] & 0xFC) | ( m_io_in2->read() & 3 );
m_p_ram[SM8521_P1] = 0xFF;
break;
}
}
WRITE8_MEMBER( gamecom_state::gamecom_pio_w )
{
offset += 0x14;
m_p_ram[offset] = data;
switch( offset )
{
case SM8521_P2: switch( ( m_p_ram[SM8521_P1] << 8 ) | data )
{
case 0xFBFF: /* column #0 */
/* P0 bit 0 cleared => 01 */
/* P0 bit 1 cleared => 0E */
/* P0 bit 2 cleared => 1B */
/* P0 bit 3 cleared => etc */
/* P0 bit 4 cleared => */
/* P0 bit 5 cleared => */
/* P0 bit 6 cleared => */
/* P0 bit 7 cleared => */
/* P1 bit 0 cleared => */
/* P1 bit 1 cleared => */
handle_stylus_press(0);
break;
case 0xF7FF: /* column #1 */
handle_stylus_press(1);
break;
case 0xEFFF: /* column #2 */
handle_stylus_press(2);
break;
case 0xDFFF: /* column #3 */
handle_stylus_press(3);
break;
case 0xBFFF: /* column #4 */
handle_stylus_press(4);
break;
case 0x7FFF: /* column #5 */
handle_stylus_press(5);
break;
case 0xFFFE: /* column #6 */
handle_stylus_press(6);
break;
case 0xFFFD: /* column #7 */
handle_stylus_press(7);
break;
case 0xFFFB: /* column #8 */
handle_stylus_press(8);
break;
case 0xFFF7: /* column #9 */
handle_stylus_press(9);
break;
case 0xFFEF: /* column #10 */
handle_stylus_press(10);
break;
case 0xFFDF: /* column #11 */
handle_stylus_press(11);
break;
case 0xFFBF: /* column #12 */
handle_stylus_press(12);
break;
case 0xFF7F: /* keys #1 */
/* P0 bit 0 cleared => 83 (up) */
/* P0 bit 1 cleared => 84 (down) */
/* P0 bit 2 cleared => 85 (left) */
/* P0 bit 3 cleared => 86 (right) */
/* P0 bit 4 cleared => 87 (menu) */
/* P0 bit 5 cleared => 8A (pause) */
/* P0 bit 6 cleared => 89 (sound) */
/* P0 bit 7 cleared => 8B (button A) */
/* P1 bit 0 cleared => 8C (button B) */
/* P1 bit 1 cleared => 8D (button C) */
m_p_ram[SM8521_P0] = m_io_in0->read();
m_p_ram[SM8521_P1] = (m_p_ram[SM8521_P1] & 0xFC) | ( m_io_in1->read() & 3 );
break;
case 0xFFFF: /* keys #2 */
/* P0 bit 0 cleared => 88 (power) */
/* P0 bit 1 cleared => 8E (button D) */
/* P0 bit 2 cleared => A0 */
/* P0 bit 3 cleared => A0 */
/* P0 bit 4 cleared => A0 */
/* P0 bit 5 cleared => A0 */
/* P0 bit 6 cleared => A0 */
/* P0 bit 7 cleared => A0 */
/* P1 bit 0 cleared => A0 */
/* P1 bit 1 cleared => A0 */
m_p_ram[SM8521_P0] = (m_p_ram[SM8521_P0] & 0xFC) | ( m_io_in2->read() & 3 );
m_p_ram[SM8521_P1] = 0xFF;
break;
}
return;
case SM8521_P3:
case SM8521_P1:
case SM8521_P2:
handle_input_press(m_p_ram[SM8521_P1] | (m_p_ram[SM8521_P2] << 8));
break;
case SM8521_P3:
/* P3 bit7 clear, bit6 set -> enable cartridge port #0? */
/* P3 bit6 clear, bit7 set -> enable cartridge port #1? */
switch( data & 0xc0 )