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Add IRQ to get software RTC running, removed some unused members, added members to save states

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This commit is contained in:
Joakim Larsson Edstrom 2016-09-07 22:38:10 +02:00
parent 0c0c086268
commit 47366cd229
1 changed files with 18 additions and 12 deletions
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30
src/mame/drivers/didact.cpp
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@ -496,12 +496,8 @@ public:
,m_io_line7(*this, "LINE7")
,m_io_line8(*this, "LINE8")
,m_io_line9(*this, "LINE9")
,m_line5(0)
,m_line6(0)
,m_line7(0)
,m_line8(0)
,m_line9(0)
,m_pia1_B(0)
,m_50hz(0)
{ }
required_device<m6802_cpu_device> m_maincpu;
required_device<ttl74145_device> m_kbd_74145;
@ -518,6 +514,7 @@ public:
DECLARE_WRITE8_MEMBER( pia1_kbA_w );
DECLARE_READ8_MEMBER( pia1_kbB_r );
DECLARE_WRITE8_MEMBER( pia1_kbB_w );
TIMER_DEVICE_CALLBACK_MEMBER(rtc_w);
protected:
required_device<pia6821_device> m_pia1;
required_device<pia6821_device> m_pia2;
@ -526,19 +523,26 @@ protected:
required_ioport m_io_line7;
required_ioport m_io_line8;
required_ioport m_io_line9;
UINT8 m_line5;
UINT8 m_line6;
UINT8 m_line7;
UINT8 m_line8;
UINT8 m_line9;
UINT8 m_pia1_B;
UINT8 m_50hz;
};
TIMER_DEVICE_CALLBACK_MEMBER(e100_state::rtc_w)
{
m_pia2->ca1_w((m_50hz++ & 1));
}
void e100_state::machine_start()
{
LOG(("%s()\n", FUNCNAME));
m_char_ptr = memregion("chargen")->base();
m_vram = (UINT8 *)m_videoram.target();
/* register for state saving */
save_pointer (NAME (m_char_ptr), sizeof(m_char_ptr));
save_pointer (NAME (m_vram), sizeof(m_vram));
save_item(NAME(m_50hz));
save_item(NAME(m_pia1_B));
}
UINT32 e100_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
@ -959,8 +963,9 @@ static MACHINE_CONFIG_START( e100, e100_state )
MCFG_PIA_WRITEPB_HANDLER(WRITE8(e100_state, pia1_kbB_w))
MCFG_PIA_READPB_HANDLER(READ8(e100_state, pia1_kbB_r))
/* The optional second PIA enables the expansion port and a software RTC with 50Hz resolution */
/* The optional second PIA enables the expansion port on CA1 and a software RTC with 50Hz resolution */
MCFG_DEVICE_ADD(PIA2_TAG, PIA6821, 0)
MCFG_PIA_IRQA_HANDLER(INPUTLINE("maincpu", M6800_IRQ_LINE))
/* Cassette support - E100 uses 300 baud Kansas City Standard with 1200/2400 Hz modulation */
/* NOTE on usage: mame e100 -window -cass <wav file> -ui_active
@ -978,9 +983,10 @@ static MACHINE_CONFIG_START( e100, e100_state )
MCFG_SCREEN_RAW_PARAMS(XTAL_4MHz/2, 265, 0, 265, 265, 0, 265)
MCFG_SCREEN_UPDATE_DRIVER(e100_state, screen_update)
MCFG_SCREEN_PALETTE("palette")
MCFG_PALETTE_ADD_MONOCHROME("palette")
/* There is a 50Hz signal from the video circuit to CA1 which generates interrupts and drives a software RTC */
MCFG_TIMER_DRIVER_ADD_PERIODIC("video50hz", e100_state, rtc_w, attotime::from_hz(100)) /* Will be divided by two through toggle in the handler */
MACHINE_CONFIG_END
static MACHINE_CONFIG_START( md6802, md6802_state )