/
europc.cpp
529 lines (458 loc) · 18.3 KB
/
europc.cpp
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// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
// comments and BIOS versions:rfka01
/*****************************************************************************************************
*
* Schneider Rundfunkwerke AG Euro PC and Euro PC II driver
*
* Manuals and BIOS files: ftp://ftp.cpcszene.de/pub/Computer/Schneider_PC/EuroPC_XT/ (down), mirror at https://lanowski.de/mirrors/
*
* Euro PC: Computer and floppy drive integrated into the keyboard, 8088, 512K RAM, there was an upgrade card for the ISA slot that took it to 640K, single ISA slot
FD360 external 360K 5.25" DS DD floppy, FD720 external 720K 3,5" DS DD floppy, HD-20 external harddisk, internal graphics card is CGA or Hercules, 64KB VRAM
* Euro PC II: like Euro PC, socket for 8087, 768K RAM on board, driver on Schneider DOS disk allowed the portion over 640K to be used as extended memory or ramdisk.
* Euro XT: conventional desktop, specs like Euro PC II, two ISA slots on a riser card, 102 key separate keyboard, internal XTA (XT-IDE) 20MB harddisk, connector for FD360 and FD720 was retained
*
* https://www.forum64.de/index.php?thread/43066-schneider-euro-pc-i-ii-xt-welche-bios-version-habt-ihr/ claims Versions BIOS >=2.06 have a change in memory management.
* Versions 2.04 and 2.05 only show a single dash on the top left of the screen, set slot 1 to from AGA to CGA or Hercules to get them to display.
*
* To get rid of the BIOS error messages when you first start the system, enter the BIOS with Ctrl-Alt-Esc, match the RAM size to your settings in MAME, set the CPU speed to 9.54MHz
* and the graphics adapter to Color/Graphics 80 or Special Adapter, internal graphics off
*
* To-Do: * An external 20MB harddisk (Schneider HD20) can be added to the PC and PC II. This is a XTA (8-bit IDE) drive. The BIOSs contain their own copy of the WD XT IDE BIOS that can be activated from the BIOS setup menu.
* (load debug, then g=f000:a000 to enter formatter routine)
* * emulate internal graphics, but AGA is not quite the correct choice for the standard graphics adapter (it's a Commodore standard), as the Schneiders are only capable of switching between Hercules and CGA modes.
* * The PC 2 and XT have 768K of memory that can be configured from the BIOS setup as 640K, 640K+128K EMS and 512K+256K EMS. The EMS options are not visible in our emulation and loading the EMS driver fails.
* See http://forum.classic-computing.de/index.php?page=Thread&threadID=8380 for screenshots.
* * use correct AT style keyboard for XT
*
*
*****************************************************************************************************/
#include "emu.h"
#include "cpu/i86/i86.h"
#include "bus/isa/aga.h"
#include "bus/isa/fdc.h"
#include "bus/pc_kbd/keyboards.h"
#include "bus/pc_kbd/pc_kbdc.h"
#include "europc_kbd.h"
#include "machine/genpc.h"
#include "machine/m3002.h"
#include "machine/ram.h"
#include "softlist_dev.h"
class europc_fdc_device : public isa8_fdc_device
{
public:
europc_fdc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
virtual void device_add_mconfig(machine_config &config) override;
virtual void device_start() override;
private:
void map(address_map &map);
};
DEFINE_DEVICE_TYPE(EUROPC_FDC, europc_fdc_device, "europc_fdc", "EURO PC FDC hookup")
europc_fdc_device::europc_fdc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: isa8_fdc_device(mconfig, EUROPC_FDC, tag, owner, clock)
{
}
static void pc_dd_floppies(device_slot_interface &device)
{
device.option_add("525dd", FLOPPY_525_DD);
device.option_add("35dd", FLOPPY_35_DD);
}
void europc_fdc_device::device_add_mconfig(machine_config &config)
{
WD37C65C(config, m_fdc, 16_MHz_XTAL);
m_fdc->intrq_wr_callback().set(FUNC(europc_fdc_device::irq_w));
m_fdc->drq_wr_callback().set(FUNC(europc_fdc_device::drq_w));
// single built-in 3.5" 720K drive, connector for optional external 3.5" or 5.25" drive
FLOPPY_CONNECTOR(config, "fdc:0", pc_dd_floppies, "35dd", isa8_fdc_device::floppy_formats).set_fixed(true);
FLOPPY_CONNECTOR(config, "fdc:1", pc_dd_floppies, nullptr, isa8_fdc_device::floppy_formats);
}
void europc_fdc_device::device_start()
{
set_isa_device();
m_isa->install_device(0x03f0, 0x03f7, *this, &europc_fdc_device::map);
m_isa->set_dma_channel(2, this, true);
}
void europc_fdc_device::map(address_map &map)
{
map(2, 2).w(m_fdc, FUNC(wd37c65c_device::dor_w));
map(4, 5).m(m_fdc, FUNC(wd37c65c_device::map));
// TODO: DCR also decoded by JIM/BIGJIM
}
static void europc_fdc(device_slot_interface &device)
{
device.option_add("fdc", EUROPC_FDC);
}
namespace {
class europc_pc_state : public driver_device
{
public:
europc_pc_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_mb(*this, "mb"),
m_ram(*this, RAM_TAG),
m_rtc(*this, "rtc"),
m_jim_state(0)
{ }
void europc(machine_config &config);
void europc2(machine_config &config);
void euroxt(machine_config &config);
void init_europc();
private:
required_device<cpu_device> m_maincpu;
required_device<pc_noppi_mb_device> m_mb;
required_device<ram_device> m_ram;
required_device<m3002_device> m_rtc;
uint8_t europc_portc_r();
void reset_in_w(int state);
void europc_jim_w(offs_t offset, uint8_t data);
uint8_t europc_jim_r(offs_t offset);
uint8_t europc_jim2_r();
uint8_t m_jim_data[16];
uint8_t m_jim_state;
isa8_aga_device::mode_t m_jim_mode{};
void europc_io(address_map &map);
void europc_map(address_map &map);
};
/*
europc
fe107 bios checksum test
memory test
fe145
irq vector init
fe156
fe169 fd774 // test of special europc registers 254 354
fe16c fe817
fe16f
fec08 // test of special europc registers 800a rtc time or date error, rtc corrected
fef66 0xf
fdb3e 0x8..0xc
fd7f8
fdb5f
fe172
fecc5 // 801a video setup error
fd6c9
copyright output
fe1b7
fe1be di bits set mean output text!!!,
(801a)
0x8000 output
1 rtc error
2 rtc time or date error
4 checksum error in setup
8 rtc status corrected
10 video setup error
20 video ram bad
40 monitor type not recogniced
80 mouse port enabled
100 joystick port enabled
fe1e2 fdc0c cpu speed is 4.77 MHz
fe1e5 ff9c0 keyboard processor error
fe1eb fc617 external lpt1 at 0x3bc
fe1ee fe8ee external coms at
routines:
fc92d output text at bp
fdb3e rtc read reg cl
fe8ee piep
fe95e rtc write reg cl
polls until jim 0xa is zero,
output cl at jim 0xa
write ah hinibble as lownibble into jim 0xa
write ah lownibble into jim 0xa
fef66 rtc read reg cl
polls until jim 0xa is zero,
output cl at jim 0xa
read low 4 nibble at jim 0xa
read low 4 nibble at jim 0xa
return first nibble<<4|second nibble in ah
ff046 seldom compares ret
ffe87 0 -> ds
469:
bit 0: b0000 memory available
bit 1: b8000 memory available
46a: 00 jim 250 01 jim 350
*/
/*
250..253 write only 00 be 00 10
252 write 0 b0000 memory activ
252 write 0x10 b8000 memory activ
jim 04: 0:4.77 0x40:7.16
pio 63: 11,19 4.77 51,59 7.16
63 bit 6,7 clock select
254 bit 6,7 clock select
250 bit 0: mouse on
bit 1: joystick on
254..257 r/w memory ? JIM asic? ram behaviour
*/
void europc_pc_state::europc_jim_w(offs_t offset, uint8_t data)
{
switch (offset)
{
case 2:
if (!(data & 0x80))
{
switch (data)
{
case 0x1f:
case 0x0b: m_jim_mode = isa8_aga_device::AGA_MONO; break;
case 0xe: //80 columns?
case 0xd: //40 columns?
case 0x18:
case 0x1a: m_jim_mode = isa8_aga_device::AGA_COLOR; break;
default: m_jim_mode = isa8_aga_device::AGA_OFF; break;
}
}
// mode = (data & 0x10) ? isa8_aga_device::AGA_COLOR : isa8_aga_device::AGA_MONO;
// mode = (data & 0x10) ? isa8_aga_device::AGA_COLOR : isa8_aga_device::AGA_OFF;
if (data & 0x80) m_jim_state = 0;
break;
case 4:
switch(data & 0xc0)
{
case 0x00: m_maincpu->set_clock_scale(1.0 / 2); break;
case 0x40: m_maincpu->set_clock_scale(3.0 / 4); break;
default: m_maincpu->set_clock_scale(1); break;
}
break;
case 0xa:
m_rtc->write(data);
return;
}
logerror("jim write %.2x %.2x\n", offset, data);
m_jim_data[offset] = data;
}
uint8_t europc_pc_state::europc_jim_r(offs_t offset)
{
int data = 0;
switch(offset)
{
case 4: case 5: case 6: case 7: data = m_jim_data[offset]; break;
case 0: case 1: case 2: case 3: data = 0; break;
case 0xa: return m_rtc->read();
}
return data;
}
uint8_t europc_pc_state::europc_jim2_r()
{
switch (m_jim_state)
{
case 0: m_jim_state++; return 0;
case 1: m_jim_state++; return 0x80;
case 2:
m_jim_state = 0;
switch (m_jim_mode)
{
case isa8_aga_device::AGA_COLOR: return 0x87; // for color;
case isa8_aga_device::AGA_MONO: return 0x90; //for mono
case isa8_aga_device::AGA_OFF: return 0x80; // for vram
// return 0x97; //for error
}
}
return 0;
}
/* realtime clock and nvram EM M3002
reg 0: seconds
reg 1: minutes
reg 2: hours
reg 3: day 1 based
reg 4: month 1 based
reg 5: year bcd (no century, values bigger 88? are handled as 1900, else 2000)
reg 6:
reg 7:
reg 8:
reg 9:
reg a:
reg b: 0x10 written
bit 0,1: 0 video startup mode: 0=specialadapter, 1=color40, 2=color80, 3=monochrom
bit 2: internal video on
bit 4: color
bit 6,7: clock
reg c:
bit 0,1: language/country
reg d: xor checksum
reg e:
reg 0f: 01 status ok, when not 01 written
*/
void europc_pc_state::init_europc()
{
uint8_t *rom = &memregion("bios")->base()[0];
/*
fix century rom bios bug !
if year <79 month (and not CENTURY) is loaded with 0x20
*/
if (rom[0xf93e]==0xb6){ // mov dh,
rom[0xf93e]=0xb5; // mov ch,
uint8_t a = 0;
int i = 0x8000;
for (; i < 0xffff; i++)
a += rom[i];
rom[0xffff] = 256 - a;
}
}
uint8_t europc_pc_state::europc_portc_r()
{
int data = 0;
if (m_mb->pit_out2())
data |= 0x20;
return data;
}
void europc_pc_state::reset_in_w(int state)
{
m_maincpu->set_input_line(INPUT_LINE_RESET, state ? CLEAR_LINE : ASSERT_LINE);
if (!state)
m_mb->reset();
}
/*
layout of an uk europc
ESC, [SPACE], F1,F2,F3,F4,[SPACE],F5,F6,F7,F8,[SPACE],F9,F0,F11,F12
[SPACE]
\|, 1,2,3,4,5,6,7,8,9,0 -,+, BACKSPACE,[SPACE], NUM LOCK, SCROLL LOCK, PRINT SCREEN, KEYPAD -
TAB,Q,W,E,R,T,Y,U,I,O,P,[,], RETURN, [SPACE], KEYPAD 7, KEYPAD 8, KEYPAD 9, KEYPAD +
CTRL, A,S,D,F,G,H,J,K,L,;,@,~, RETURN, [SPACE],KEYPAD 4,KEYPAD 5,KEYPAD 6, KEYPAD +
LEFT SHIFT, Z,X,C,V,B,N,M,<,>,?,RIGHT SHIFT,[SPACE],KEYPAD 1, KEYPAD 2, KEYPAD 3, KEYPAD ENTER
ALT,[SPACE], SPACE BAR,[SPACE],CAPS LOCK,[SPACE], KEYPAD 0, KEYPAD ., KEYPAD ENTER
\ and ~ had to be swapped
i am not sure if keypad enter delivers the mf2 keycode
*/
static INPUT_PORTS_START( europc )
PORT_START("DSW0") /* IN1 */
PORT_START("DSW1") /* IN2 */
PORT_DIPNAME( 0x80, 0x80, "COM1: enable")
PORT_DIPSETTING( 0x00, DEF_STR( No ) )
PORT_DIPSETTING( 0x80, DEF_STR( Yes ) )
PORT_DIPNAME( 0x40, 0x40, "COM2: enable")
PORT_DIPSETTING( 0x00, DEF_STR( No ) )
PORT_DIPSETTING( 0x40, DEF_STR( Yes ) )
PORT_DIPNAME( 0x20, 0x00, "COM3: enable")
PORT_DIPSETTING( 0x00, DEF_STR( No ) )
PORT_DIPSETTING( 0x20, DEF_STR( Yes ) )
PORT_DIPNAME( 0x10, 0x00, "COM4: enable")
PORT_DIPSETTING( 0x00, DEF_STR( No ) )
PORT_DIPSETTING( 0x10, DEF_STR( Yes ) )
PORT_DIPNAME( 0x08, 0x08, "LPT1: enable")
PORT_DIPSETTING( 0x00, DEF_STR( No ) )
PORT_DIPSETTING( 0x08, DEF_STR( Yes ) )
PORT_DIPNAME( 0x04, 0x00, "LPT2: enable")
PORT_DIPSETTING( 0x00, DEF_STR( No ) )
PORT_DIPSETTING( 0x04, DEF_STR( Yes ) )
PORT_DIPNAME( 0x02, 0x00, "LPT3: enable")
PORT_DIPSETTING( 0x00, DEF_STR( No ) )
PORT_DIPSETTING( 0x02, DEF_STR( Yes ) )
PORT_DIPNAME( 0x01, 0x00, "Game port enable")
PORT_DIPSETTING( 0x00, DEF_STR( No ) )
PORT_DIPSETTING( 0x01, DEF_STR( Yes ) )
PORT_START("DSW2") /* IN3 */
PORT_DIPNAME( 0x08, 0x08, "HDC1 (C800:0 port 320-323)")
PORT_DIPSETTING( 0x00, DEF_STR( No ) )
PORT_DIPSETTING( 0x08, DEF_STR( Yes ) )
PORT_DIPNAME( 0x04, 0x04, "HDC2 (CA00:0 port 324-327)")
PORT_DIPSETTING( 0x00, DEF_STR( No ) )
PORT_DIPSETTING( 0x04, DEF_STR( Yes ) )
PORT_BIT( 0x02, 0x02, IPT_UNUSED ) /* no turbo switch */
PORT_BIT( 0x01, 0x01, IPT_UNUSED )
INPUT_PORTS_END
void europc_pc_state::europc_map(address_map &map)
{
map.unmap_value_high();
map(0xf0000, 0xfffff).rom().region("bios", 0);
}
void europc_pc_state::europc_io(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x00ff).m(m_mb, FUNC(pc_noppi_mb_device::map));
map(0x0062, 0x0062).r(FUNC(europc_pc_state::europc_portc_r));
map(0x0250, 0x025f).rw(FUNC(europc_pc_state::europc_jim_r), FUNC(europc_pc_state::europc_jim_w));
map(0x02e0, 0x02e0).r(FUNC(europc_pc_state::europc_jim2_r));
}
//Euro PC
void europc_pc_state::europc(machine_config &config)
{
I8088(config, m_maincpu, 4772720*2);
m_maincpu->set_addrmap(AS_PROGRAM, &europc_pc_state::europc_map);
m_maincpu->set_addrmap(AS_IO, &europc_pc_state::europc_io);
m_maincpu->set_irq_acknowledge_callback("mb:pic8259", FUNC(pic8259_device::inta_cb));
PCNOPPI_MOTHERBOARD(config, m_mb, 0).set_cputag(m_maincpu);
m_mb->int_callback().set_inputline(m_maincpu, 0);
m_mb->nmi_callback().set_inputline(m_maincpu, INPUT_LINE_NMI);
m_mb->kbddata_callback().set("kbd", FUNC(europc_keyboard_device::kbdata_w));
m_mb->kbdclk_callback().set("kbd", FUNC(europc_keyboard_device::kbclk_w));
europc_keyboard_device &kbd(EUROPC_KEYBOARD(config, "kbd", 16_MHz_XTAL / 4));
kbd.kbdata_callback().set(m_mb, FUNC(pc_noppi_mb_device::keyboard_data_w));
kbd.kbclk_callback().set(m_mb, FUNC(pc_noppi_mb_device::keyboard_clock_w));
kbd.reset_callback().set(FUNC(europc_pc_state::reset_in_w));
ISA8_SLOT(config, "isa1", 0, "mb:isa", pc_isa8_cards, "aga", false); // FIXME: determine ISA bus clock
ISA8_SLOT(config, "isa2", 0, "mb:isa", pc_isa8_cards, "lpt", true);
ISA8_SLOT(config, "isa3", 0, "mb:isa", pc_isa8_cards, "com", true);
ISA8_SLOT(config, "isa4", 0, "mb:isa", europc_fdc, "fdc", true);
M3002(config, m_rtc, 32.768_kHz_XTAL);
/* internal ram */
// Machine came with 512K standard, 640K via expansion card, but BIOS offers 256K as well
RAM(config, m_ram).set_default_size("512K").set_extra_options("256K, 640K");
/* software lists */
SOFTWARE_LIST(config, "disk_list").set_original("ibm5150");
}
//Euro PC II
void europc_pc_state::europc2(machine_config &config)
{
europc(config);
// could be configured by the BIOS as 640K, 640K+128K EMS or 512K+256K EMS
m_ram->set_default_size("768K");
}
//Euro XT
void europc_pc_state::euroxt(machine_config &config)
{
europc(config);
pc_kbdc_device &pc_kbdc(PC_KBDC(config.replace(), "kbd", pc_xt_keyboards, STR_KBD_IBM_PC_XT_83));
pc_kbdc.out_clock_cb().set(m_mb, FUNC(pc_noppi_mb_device::keyboard_clock_w));
pc_kbdc.out_data_cb().set(m_mb, FUNC(pc_noppi_mb_device::keyboard_data_w));
m_mb->kbdclk_callback().set("kbd", FUNC(pc_kbdc_device::clock_write_from_mb));
m_mb->kbddata_callback().set("kbd", FUNC(pc_kbdc_device::data_write_from_mb));
m_ram->set_default_size("768K");
subdevice<isa8_slot_device>("isa2")->set_default_option(nullptr);
ISA8_SLOT(config, "isa5", 0, "mb:isa", pc_isa8_cards, "xtide", true); // FIXME: determine ISA bus clock
ISA8_SLOT(config, "isa6", 0, "mb:isa", pc_isa8_cards, "lpt", true);
}
ROM_START( europc )
ROM_REGION(0x10000,"bios", 0)
// hdd bios integrated!
ROM_SYSTEM_BIOS( 0, "v2.06", "EuroPC v2.06" )
ROMX_LOAD("bios_v2.06.bin", 0x8000, 0x8000, CRC(0a25a2eb) SHA1(d35f2f483d56b1eff558586e1d33d82f7efed639), ROM_BIOS(0))
ROM_SYSTEM_BIOS( 1, "v2.06b", "EuroPC v2.06b" )
ROMX_LOAD("bios_v2.06b.bin", 0x8000, 0x8000, CRC(05d8a4c2) SHA1(52c6fd22fb739e29a1f0aa3c96ede79cdc659f72), ROM_BIOS(1))
ROM_SYSTEM_BIOS( 2, "v2.07", "EuroPC v2.07" )
ROMX_LOAD("50145", 0x8000, 0x8000, CRC(1775a11d) SHA1(54430d4d0462860860397487c9c109e6f70db8e3), ROM_BIOS(2))
ROM_SYSTEM_BIOS( 3, "v2.08", "EuroPC v2.08" )
ROMX_LOAD("bios_v2.08.bin", 0x8000, 0x8000, CRC(a7048349) SHA1(c2a0af7276c2ff6925abe5a5edef09c5a84106f2), ROM_BIOS(3))
ROM_SYSTEM_BIOS( 4, "v2.08a", "EuroPC v2.08a" )
ROMX_LOAD("bios_v2.08a.bin", 0x8000, 0x8000, CRC(872520b7) SHA1(9c94d33c0d454fab7bcd0c4516b50f1c3c6a30b8), ROM_BIOS(4))
ROM_SYSTEM_BIOS( 5, "v2.08b", "EuroPC v2.08b" )
ROMX_LOAD("bios_v2.08b.bin", 0x8000, 0x8000, CRC(668c0d19) SHA1(69412e58e0ed1d141e633f094af91ec5f7ae064b), ROM_BIOS(5))
ROM_SYSTEM_BIOS( 6, "v2.04", "EuroPC v2.04" )
ROMX_LOAD("bios_v2.04.bin", 0x8000, 0x8000, CRC(e623967c) SHA1(5196b14018da1f3198e2950af0e6eab41425f556), ROM_BIOS(6))
ROM_SYSTEM_BIOS( 7, "v2.05", "EuroPC v2.05" )
ROMX_LOAD("bios_2.05.bin", 0x8000, 0x8000, CRC(372ceed6) SHA1(bb3d3957a22422f98be2225bdc47705bcab96f56), ROM_BIOS(7)) // v2.04 and v2.05 don't work yet, , see comment section
ROM_END
ROM_START( europc2 )
ROM_REGION(0x10000,"bios", 0)
// hdd bios integrated!
ROM_LOAD("europcii_bios_v3.01_500145.bin", 0x8000, 0x8000, CRC(ecca89c8) SHA1(802b89babdf0ab0a0a9c21d1234e529c8386d6fb))
ROM_END
ROM_START( euroxt )
ROM_REGION(0x10000,"bios", 0)
// hdd bios integrated!
ROM_SYSTEM_BIOS( 0, "v1.01", "EuroXT v1.01" )
ROMX_LOAD("euroxt_bios_v1.01.bin", 0x8000, 0x8000, CRC(1e1fe931) SHA1(bb7cae224d66ae48045f323ecb9ad59bf49ed0a2), ROM_BIOS(0))
ROM_SYSTEM_BIOS( 1, "v1.02", "EuroXT v1.02" )
ROMX_LOAD("euro_xt_bios_id.nr.51463_v1.02.bin", 0x8000, 0x8000, CRC(c36de60e) SHA1(c668cc9c5f3325233f30eac654678e1b8b7a7847), ROM_BIOS(1))
ROM_SYSTEM_BIOS( 2, "v1.04", "EuroXT v1.04" ) // no display
ROMX_LOAD("euro_xt_bios_v1.04_cs8b00_5.12.89_21_25.bin", 0x8000, 0x8000, CRC(24033a62) SHA1(9d1d89cb8b99569b6c0aaa7c6aceb355dc20b2fd), ROM_BIOS(2))
ROM_SYSTEM_BIOS( 3, "v1.05", "EuroXT v1.05" ) // no display
ROMX_LOAD("euro-xt_bios_id.nr.51463_v1.05.bin", 0x8000, 0x8000, CRC(e3d2591d) SHA1(710cdbafeb913f2e436b64eedd7a1794c589a48a), ROM_BIOS(3))
// BIOS ROM versions 1.02, 1.04 and 1.05 were accompanied by identical char ROM versions 50146, which in turn match the one used in /bus/isa/aga.cpp
ROM_END
} // anonymous namespace
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1988, europc, 0, ibm5150, europc, europc, europc_pc_state, init_europc, "Schneider Rdf. AG", "EURO PC", MACHINE_NOT_WORKING)
COMP( 198?, europc2, 0, ibm5150, europc2, europc, europc_pc_state, init_europc, "Schneider Rdf. AG", "EURO PC II", MACHINE_NOT_WORKING)
COMP( 198?, euroxt, 0, ibm5150, euroxt, europc, europc_pc_state, init_europc, "Schneider Rdf. AG", "EURO XT", MACHINE_NOT_WORKING)