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(MESS) LX800 : connected up analog inputs.

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This commit is contained in:
Robbbert 2014-06-01 13:26:55 +00:00
parent 9415d901fd
commit 0efc373369
1 changed files with 49 additions and 8 deletions
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57
src/mess/drivers/lx800.c
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@ -9,8 +9,6 @@
- CPU type uPD7810HG
- CPU PORTD and PORTF are connected to the Gate Array
- CPU Analog Port (AN0-AN7) is not emulated (connects to DIPSW2 and
some other things).
- processing gets stuck in a loop, and never gets to scan the
input buttons and switches.
- CPU disassembly doesn't seem to indicate conditional JR or RET.
@ -32,13 +30,11 @@ class lx800_state : public driver_device
{
public:
lx800_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_beep(*this, "beeper")
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_beep(*this, "beeper")
{ }
required_device<cpu_device> m_maincpu;
required_device<beep_device> m_beep;
DECLARE_READ8_MEMBER(lx800_porta_r);
DECLARE_WRITE8_MEMBER(lx800_porta_w);
DECLARE_READ8_MEMBER(lx800_portc_r);
@ -47,6 +43,15 @@ public:
DECLARE_WRITE_LINE_MEMBER(lx800_centronics_pe_w);
DECLARE_WRITE_LINE_MEMBER(lx800_paperempty_led_w);
DECLARE_WRITE_LINE_MEMBER(lx800_reset_w);
DECLARE_READ_LINE_MEMBER(an0_r);
DECLARE_READ_LINE_MEMBER(an1_r);
DECLARE_READ_LINE_MEMBER(an2_r);
DECLARE_READ_LINE_MEMBER(an3_r);
DECLARE_READ_LINE_MEMBER(an4_r);
DECLARE_READ_LINE_MEMBER(an5_r);
private:
required_device<cpu_device> m_maincpu;
required_device<beep_device> m_beep;
virtual void machine_start();
};
@ -114,6 +119,36 @@ WRITE8_MEMBER( lx800_state::lx800_portc_w )
m_beep->set_state(!BIT(data, 7));
}
READ_LINE_MEMBER( lx800_state::an0_r )
{
return BIT(ioport("DIPSW2")->read(), 0);
}
READ_LINE_MEMBER( lx800_state::an1_r )
{
return BIT(ioport("DIPSW2")->read(), 1);
}
READ_LINE_MEMBER( lx800_state::an2_r )
{
return BIT(ioport("DIPSW2")->read(), 2);
}
READ_LINE_MEMBER( lx800_state::an3_r )
{
return BIT(ioport("DIPSW2")->read(), 3); // can also read an external line AUTO_FEED_XT
}
READ_LINE_MEMBER( lx800_state::an4_r )
{
return 0; // Printer select line (0=always selected)
}
READ_LINE_MEMBER( lx800_state::an5_r )
{
return 1; // Monitors 24v line, should return 4.08 volts
}
/***************************************************************************
GATE ARRAY
@ -249,13 +284,19 @@ static MACHINE_CONFIG_START( lx800, lx800_state )
MCFG_CPU_ADD("maincpu", UPD7810, XTAL_14_7456MHz)
MCFG_CPU_PROGRAM_MAP(lx800_mem)
MCFG_CPU_IO_MAP(lx800_io)
MCFG_UPD7810_AN0(READLINE(lx800_state, an0_r))
MCFG_UPD7810_AN1(READLINE(lx800_state, an1_r))
MCFG_UPD7810_AN2(READLINE(lx800_state, an2_r))
MCFG_UPD7810_AN3(READLINE(lx800_state, an3_r))
MCFG_UPD7810_AN4(READLINE(lx800_state, an4_r))
MCFG_UPD7810_AN5(READLINE(lx800_state, an5_r))
MCFG_DEFAULT_LAYOUT(layout_lx800)
/* audio hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD("beeper", BEEP, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.05)
/* gate array */
MCFG_DEVICE_ADD("ic3b", E05A03, 0)