diff options
author | 2013-12-22 21:17:17 +0000 | |
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committer | 2013-12-22 21:17:17 +0000 | |
commit | 452bae2722a623a444355075ebc159ce0370a08a (patch) | |
tree | 19138fa17f6b2bcbb098391996aa496e3140c441 /src/mess/machine/genpc.c | |
parent | 2279ff026a565b7802566a7dc7d33c883424b00c (diff) |
(mess) mega Soviet clone patch [shattered]
- moves ec184*, iskr103* and mc1502 out of pc.c
- moves CGA font upload support to a subclass
- adds new drivers: poisk1, ec1847, pk88
- adds a skeleton of native iskr103* keyboard
i8089: implement remaining instructions and support execution from "io" space. [Carl]
(mess) isbc-215g: add intel isbc-215g hdd controller, read only for now [Carl]
(mess) isbc: add hdd support to isbc2861 (nw)
Diffstat (limited to 'src/mess/machine/genpc.c')
-rw-r--r-- | src/mess/machine/genpc.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/mess/machine/genpc.c b/src/mess/machine/genpc.c index 0666d716db9..66f09f662e0 100644 --- a/src/mess/machine/genpc.c +++ b/src/mess/machine/genpc.c @@ -879,3 +879,130 @@ WRITE8_MEMBER( ibm5150_mb_device::pc_ppi_portb_w ) m_ppi_clock_signal = ( m_ppi_keyb_clock ) ? 1 : 0; m_pc_kbdc->clock_write_from_mb(m_ppi_clock_signal); } + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +const device_type EC1841_MOTHERBOARD = &device_creator<ec1841_mb_device>; + +static MACHINE_CONFIG_FRAGMENT( ec1841_mb_config ) + MCFG_FRAGMENT_ADD(ibm5160_mb_config) + + MCFG_DEVICE_REMOVE("pc_kbdc") + MCFG_PC_KBDC_ADD("pc_kbdc", pc_kbdc_intf_5150) +MACHINE_CONFIG_END + + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +machine_config_constructor ec1841_mb_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( ec1841_mb_config ); +} + +static INPUT_PORTS_START( ec1841_mb ) + PORT_START("DSW0") /* SA1 */ + PORT_DIPNAME( 0xc0, 0x40, "Number of floppy drives") + PORT_DIPSETTING( 0x00, "1" ) + PORT_DIPSETTING( 0x40, "2" ) + PORT_DIPSETTING( 0x80, "3" ) + PORT_DIPSETTING( 0xc0, "4" ) + PORT_DIPNAME( 0x30, 0x20, "Graphics adapter") + PORT_DIPSETTING( 0x00, "Reserved" ) + PORT_DIPSETTING( 0x10, "Color 40x25" ) + PORT_DIPSETTING( 0x20, "Color 80x25" ) + PORT_DIPSETTING( 0x30, "Monochrome" ) + PORT_BIT( 0x08, 0x08, IPT_UNUSED ) + /* BIOS does not support booting from QD floppies */ + PORT_DIPNAME( 0x04, 0x04, "Floppy type") + PORT_DIPSETTING( 0x00, "80 tracks" ) + PORT_DIPSETTING( 0x04, "40 tracks" ) + PORT_DIPNAME( 0x02, 0x00, "8087 installed") + PORT_DIPSETTING( 0x00, DEF_STR(No) ) + PORT_DIPSETTING( 0x02, DEF_STR(Yes) ) + PORT_DIPNAME( 0x01, 0x01, "Boot from floppy") + PORT_DIPSETTING( 0x01, DEF_STR(Yes) ) + PORT_DIPSETTING( 0x00, DEF_STR(No) ) + + PORT_START("SA2") + PORT_DIPNAME( 0x04, 0x04, "Speech synthesizer") + PORT_DIPSETTING( 0x00, "Installed" ) + PORT_DIPSETTING( 0x04, "Not installed" ) +INPUT_PORTS_END + +//------------------------------------------------- +// input_ports - device-specific input ports +//------------------------------------------------- + +ioport_constructor ec1841_mb_device::device_input_ports() const +{ + return INPUT_PORTS_NAME( ec1841_mb ); +} + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// ec1841_mb_device - constructor +//------------------------------------------------- + +ec1841_mb_device::ec1841_mb_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : ibm5160_mb_device(mconfig, tag, owner, clock) +{ +} + +void ec1841_mb_device::device_start() +{ + ibm5160_mb_device::device_start(); +} +void ec1841_mb_device::device_reset() +{ + ibm5160_mb_device::device_reset(); +} + +// kbd interface is 5150-like but PB2 controls access to second bank of DIP switches (SA2). +WRITE8_MEMBER( ec1841_mb_device::pc_ppi_portb_w ) +{ + /* KB controller port B */ + m_ppi_portb = data; + m_ppi_portc_switch_high = data & 0x04; + m_ppi_keyboard_clear = data & 0x80; + m_ppi_keyb_clock = data & 0x40; + m_pit8253->gate2_w(BIT(data, 0)); + pc_speaker_set_spkrdata( data & 0x02 ); + + /* If PB7 is set clear the shift register and reset the IRQ line */ + if ( m_ppi_keyboard_clear ) + { + m_ppi_shift_register = 0; + m_ppi_shift_enable = 0; + m_pic8259->ir1_w(m_ppi_shift_enable); + } + + m_pc_kbdc->data_write_from_mb(!m_ppi_shift_enable); + m_ppi_clock_signal = ( m_ppi_keyb_clock ) ? 1 : 0; + m_pc_kbdc->clock_write_from_mb(m_ppi_clock_signal); +} + +READ8_MEMBER ( ec1841_mb_device::pc_ppi_portc_r ) +{ + int timer2_output = m_pit8253->get_output(2); + int data=0xff; + + data&=~0x80; // no parity error + data&=~0x40; // no error on expansion board + + if (m_ppi_portc_switch_high) + { + data = (data & 0xf0) | (ioport("SA2")->read() & 0x0f); + } + + data = ( data & ~0x20 ) | ( timer2_output ? 0x20 : 0x00 ); + + return data; +} |