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Diffstat (limited to 'src/devices/machine/genpc.cpp')
-rw-r--r--src/devices/machine/genpc.cpp121
1 files changed, 119 insertions, 2 deletions
diff --git a/src/devices/machine/genpc.cpp b/src/devices/machine/genpc.cpp
index e626bf96b30..50528d17aa7 100644
--- a/src/devices/machine/genpc.cpp
+++ b/src/devices/machine/genpc.cpp
@@ -778,7 +778,118 @@ WRITE8_MEMBER( ibm5150_mb_device::pc_ppi_portb_w )
// GLOBAL VARIABLES
//**************************************************************************
-DEFINE_DEVICE_TYPE(EC1841_MOTHERBOARD, ec1841_mb_device, "ec1841_mb", "EC-1840 motherboard")
+DEFINE_DEVICE_TYPE(EC1840_MOTHERBOARD, ec1840_mb_device, "ec1840_mb", "EC-1840 motherboard")
+
+
+//-------------------------------------------------
+// device_add_mconfig - add device configuration
+//-------------------------------------------------
+
+void ec1840_mb_device::device_add_mconfig(machine_config &config)
+{
+ ec1841_mb_device::device_add_mconfig(config);
+
+ m_ppi8255->in_pc_callback().set(FUNC(ec1840_mb_device::pc_ppi_portc_r));
+}
+
+// via http://oldpc.su/pc/ec1840/ec1840rep.html
+static INPUT_PORTS_START( ec1840_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, 0x30, "Graphics adapter")
+ PORT_DIPSETTING( 0x00, "Reserved" )
+ PORT_DIPSETTING( 0x10, "Color 40x25" )
+ PORT_DIPSETTING( 0x20, "Color 80x25" )
+ PORT_DIPSETTING( 0x30, "Monochrome" )
+ PORT_BIT( 0x0c, 0x0c, IPT_UNUSED )
+ PORT_DIPNAME( 0x02, 0x02, "DMAC installed")
+ PORT_DIPSETTING( 0x00, DEF_STR(No) )
+ PORT_DIPSETTING( 0x02, DEF_STR(Yes) )
+ PORT_DIPNAME( 0x01, 0x01, "Boot from floppy")
+ PORT_DIPSETTING( 0x00, DEF_STR(No) )
+ PORT_DIPSETTING( 0x01, DEF_STR(Yes) )
+
+ PORT_START("SA2")
+ PORT_BIT( 0xcf, 0x00, IPT_UNUSED )
+ PORT_DIPNAME( 0x20, 0x20, "SA2.5")
+ PORT_DIPSETTING( 0x00, DEF_STR(No) )
+ PORT_DIPSETTING( 0x20, DEF_STR(Yes) )
+ PORT_DIPNAME( 0x10, 0x10, "SA2.4")
+ PORT_DIPSETTING( 0x00, DEF_STR(No) )
+ PORT_DIPSETTING( 0x10, DEF_STR(Yes) )
+INPUT_PORTS_END
+
+//-------------------------------------------------
+// input_ports - device-specific input ports
+//-------------------------------------------------
+
+ioport_constructor ec1840_mb_device::device_input_ports() const
+{
+ return INPUT_PORTS_NAME( ec1840_mb );
+}
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// ec1840_mb_device - constructor
+//-------------------------------------------------
+
+ec1840_mb_device::ec1840_mb_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+ : ec1841_mb_device(mconfig, EC1840_MOTHERBOARD, tag, owner, clock)
+{
+}
+
+void ec1840_mb_device::device_start()
+{
+}
+
+READ8_MEMBER( ec1840_mb_device::pc_ppi_portc_r )
+{
+ int data = 0xff;
+
+ data &= ~0x80; // no parity error
+ data &= ~0x40; // no error on expansion board
+
+ if (m_ppi_portc_switch_high)
+ {
+ /* read hi nibble of SW2 */
+ data = data & 0xf0;
+
+ switch (m_ram->size())
+ {
+ case 128 * 1024: data |= 0x00; break;
+ case 256 * 1024: data |= 0x01; break;
+ case 384 * 1024: data |= 0x02; break;
+ case 512 * 1024: data |= 0x03; break;
+ case 640 * 1024: data |= 0x04; break;
+ }
+
+ PIO_LOG(1,"PIO_C_r (hi)",("$%02x\n", data));
+ }
+ else
+ {
+ /* read lo nibble of S2 */
+ data = (data & 0xf0) | (ioport("DSW0")->read() >> 4);
+ PIO_LOG(1,"PIO_C_r (lo)",("$%02x\n", data));
+ }
+
+ data = ( data & ~0x20 ) | ( m_pit_out2 ? 0x20 : 0x00 );
+
+ return data;
+}
+
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE(EC1841_MOTHERBOARD, ec1841_mb_device, "ec1841_mb", "EC-1841 motherboard")
//-------------------------------------------------
@@ -820,6 +931,7 @@ static INPUT_PORTS_START( ec1841_mb )
PORT_DIPSETTING( 0x00, DEF_STR(No) )
PORT_START("SA2")
+ PORT_BIT( 0xcb, 0x00, IPT_UNUSED )
PORT_DIPNAME( 0x04, 0x04, "Speech synthesizer")
PORT_DIPSETTING( 0x00, "Installed" )
PORT_DIPSETTING( 0x04, "Not installed" )
@@ -847,6 +959,11 @@ ec1841_mb_device::ec1841_mb_device(const machine_config &mconfig, const char *ta
{
}
+ec1841_mb_device::ec1841_mb_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
+ : ibm5160_mb_device(mconfig, type, tag, owner, clock)
+{
+}
+
void ec1841_mb_device::device_start()
{
}
@@ -875,7 +992,7 @@ WRITE8_MEMBER( ec1841_mb_device::pc_ppi_portb_w )
m_pc_kbdc->clock_write_from_mb(m_ppi_clock_signal);
}
-READ8_MEMBER ( ec1841_mb_device::pc_ppi_portc_r )
+READ8_MEMBER( ec1841_mb_device::pc_ppi_portc_r )
{
int data=0xff;