Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-24 01:11:11 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

(MESS) gamecom : notes

Browse Source
This commit is contained in:
Robert 2014-11-18 19:56:15 +11:00
parent b9a10780fa
commit 94eabd6ec7
2 changed files with 30 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
src/mess/drivers/gamecom.c
View File

@ -6,14 +6,25 @@ Driver file to handle emulation of the Tiger Game.com by
Wilbert Pol
Todo:
everything
- Finish memory map, fill in details
- Finish input ports
- Finish palette code
- Finish machine driver struct
- Finish cartslot code
- Etc, etc, etc.
- Fix cpu and system problems that prevent the games from working.
Game Status:
- The DAC sound partially works, sound from ports 1,2,3 not done
- Inbuilt ROM and PDA functions all work
- When starting a cart, the graphic of the cart going into the slot is corrupt
- Due to an irritating message, the NVRAM is commented out in the machine config
- Cart games all have severe video issues such as flickering and nonsense gfx
- Lights Out works
- Centipede works with bad flickering
- Frogger works, but there are bugs on the 2nd row of cars (if you turn your
frog to the right it dies, and also one car goes in reverse), and not possible
to get the female frog.
- Wheel of Fortune 1&2, playable although the spinner is corrupt
- Jeopardy, playable with bad gfx
- Quiz Wiz works, but the final score doesn't show
- Tiger Web Link & Internet, they look ok, obviously aren't going to connect to anything
- Williams Arcade Classics, Robotron works, the rest are no use.
- The remaining carts are not functional to any useful degree.
***************************************************************************/
@ -213,22 +224,13 @@ static INPUT_PORTS_START( gamecom )
PORT_BIT( 0x200, IP_ACTIVE_HIGH, IPT_OTHER)
INPUT_PORTS_END
static const unsigned char palette_gamecom[] =
{
0xDF, 0xFF, 0x8F, /* White */
0x8F, 0xCF, 0x8F, /* Gray 3 */
0x6F, 0x8F, 0x4F, /* Gray 2 */
0x0F, 0x4F, 0x2F, /* Gray 1 */
0x00, 0x00, 0x00, /* Black */
};
PALETTE_INIT_MEMBER(gamecom_state, gamecom)
{
int index;
for ( index = 0; index < 5; index++ )
{
palette.set_pen_color(4-index, palette_gamecom[index*3+0], palette_gamecom[index*3+1], palette_gamecom[index*3+2] );
}
palette.set_pen_color(0, 0x00, 0x00, 0x00 ); // Black
palette.set_pen_color(1, 0x0F, 0x4F, 0x2F ); // Gray 1
palette.set_pen_color(2, 0x6F, 0x8F, 0x4F ); // Gray 2
palette.set_pen_color(3, 0x8F, 0xCF, 0x8F ); // Grey 3
palette.set_pen_color(4, 0xDF, 0xFF, 0x8F ); // White
}
UINT32 gamecom_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)

12
src/mess/machine/gamecom.c
View File

@ -8,8 +8,8 @@ static const int gamecom_timer_limit[8] = { 2, 1024, 2048, 4096, 8192, 16384, 32
TIMER_CALLBACK_MEMBER(gamecom_state::gamecom_clock_timer_callback)
{
UINT8 * RAM = m_region_maincpu->base();
UINT8 val = ( ( RAM[SM8521_CLKT] & 0x3F ) + 1 ) & 0x3F;
RAM[SM8521_CLKT] = ( RAM[SM8521_CLKT] & 0xC0 ) | val;
UINT8 val = RAM[SM8521_CLKT] + 1;
RAM[SM8521_CLKT] = ( RAM[SM8521_CLKT] & 0xC0 ) | (val & 0x3f);
m_maincpu->set_input_line(sm8500_cpu_device::CK_INT, ASSERT_LINE );
}
@ -191,8 +191,9 @@ READ8_MEMBER( gamecom_state::gamecom_pio_r )
READ8_MEMBER( gamecom_state::gamecom_internal_r )
{
if(SM8521_LCV == offset + 0x20)
popmessage("Read from vblank bit, TODO");
// ToDo: Read from vblank bit
// if(SM8521_LCV == offset + 0x20)
// popmessage("Read from vblank bit, TODO");
return m_p_ram[offset + 0x20];
}
@ -473,7 +474,8 @@ WRITE8_MEMBER( gamecom_state::gamecom_handle_dma )
m_dma.source_mask = 0x3FFF;
if (RAM[SM8521_DMBR] < 16)
m_dma.source_bank = m_region_kernel->base() + (RAM[SM8521_DMBR] << 14);
else if (m_cart_ptr)
else
if (m_cart_ptr)
m_dma.source_bank = m_cart_ptr + (RAM[SM8521_DMBR] << 14);
m_dma.dest_bank = &m_p_videoram[(RAM[SM8521_DMVP] & 0x02) ? 0x2000 : 0x0000];