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(MESS) fc100 : added notes.

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This commit is contained in:
Robbbert 2014-04-20 08:14:09 +00:00
parent e1ff04c7b3
commit d277997f00
1 changed files with 20 additions and 3 deletions
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23
src/mess/drivers/fc100.c
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@ -6,8 +6,19 @@ Goldstar Famicom FC-100
2014/04/20 Skeleton driver.
No manuals or schematics available.
Shift-Run to BREAK out of CLOAD.
Cassette uses the uart.
TODO:
- Everything
- Sound
- Cassette
- Hookup Graphics modes
- Unknown i/o ports
- Does it have a cart slot?
- Expansion?
- It misses keystrokes if you type quickly
****************************************************************************/
@ -28,7 +39,8 @@ public:
, m_videoram(*this, "videoram")
{ }
DECLARE_READ8_MEMBER( mc6847_videoram_r );
DECLARE_READ8_MEMBER(mc6847_videoram_r);
DECLARE_WRITE_LINE_MEMBER(irq_w);
UINT8 *m_p_chargen;
static UINT8 get_char_rom(running_machine &machine, UINT8 ch, int line)
@ -286,6 +298,11 @@ READ8_MEMBER( fc100_state::mc6847_videoram_r )
return data;
}
// irq is inverted in emulation, so we need this trampoline
WRITE_LINE_MEMBER( fc100_state::irq_w )
{
m_maincpu->set_input_line(0, state ? CLEAR_LINE : HOLD_LINE);
}
static const mc6847_interface fc100_mc6847_interface =
{
@ -310,10 +327,10 @@ static MACHINE_CONFIG_START( fc100, fc100_state )
MCFG_CPU_ADD("maincpu",Z80, 9159090/2)
MCFG_CPU_PROGRAM_MAP(fc100_mem)
MCFG_CPU_IO_MAP(fc100_io)
MCFG_CPU_VBLANK_INT_DRIVER("screen", fc100_state, irq0_line_hold)
/* video hardware */
MCFG_MC6847_ADD("s68047p", S68047, 9159090/3, fc100_mc6847_interface ) // Clock not verified
MCFG_MC6847_FSYNC_CALLBACK(WRITELINE(fc100_state, irq_w))
MCFG_SCREEN_MC6847_NTSC_ADD("screen", "s68047p")
/* Devices */