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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/*********************************************************************
Romantic Robot Multiface One/128/3
----------------------------------
" MULTI-PURPOSE INTERFACE FOR THE ZX SPECTRUM "
MULTIFACE ONE comprises three interfaces in one box:
1) Fully universal and 100% automatic SAVE facility for tape, microdrive, wafadrive, Beta,
Discovery and indirectly (via tape) for other disc systems
2) Joystick interface – Kempston compatible (IN 31)
3) 8K RAM extension – fully accessible, usable as a RAM disk, buffer etc. Also used by
MULTIFACE for MULTI TOOLKIT routines, buffer & other purposes.
© Romantic Robot UK Ltd 1985
Multiface One
-------------
Many versions exist, a very good source of info is: https://x128.speccy.cz/multiface/multiface.htm
Summary:
Earliest version has 2KB of RAM, composite video output, and no toolkit (pokes only).
Next version has 8KB of RAM, composite video output, and basic toolkit (including pokes).
Latest and most common version dropped the composite video output, added an enable/disable switch, and full-featured toolkit.
A special (and rare) version supports the Kempston Disc interface but drops Beta support. (not sold in stores, available only on request).
At some point during "early" revisions, the page out port changed from 0x5f to 0x1f.
Various clone/hacked rom versions are known to exist as well.
Roms:
The MUxx in the rom name is pcb revision (silkscreen marking).
The two hex digits are the rom checksum.
With the MF menu on-screen, press Symbol Shift + A (STOP) to see checksum, space to return.
The enable/disable switch became necessary on later versions as games had started including checks to detect presence of the interface.
eg. Renegade ("The Hit Squad" re-release) whilst loading, reads from 0x9f specifically to cause the MF (if present) to page in and crash the machine.
Todo: confirm exact operation of disable switch.
As mentioned in the user instructions, there is a "joystick disable" jumper inside the unit which must be cut to allow Beta disk compatibility.
The joystick is not actually disabled but rather just data bus bits D6 + D7 are held hi-z for any reads of kempston range 0b000xxxxx.
rom maps to 0x0000
ram maps to 0x2000
I/O R/W early ver late ver
---------+-----+-----------+-----------
page in R 0x9f 0x9f
page out R 0x5f 0x1f
nmi reset W 0x5f 0x1f
joystick R 0x1f 0x1f
Multiface 128
-------------
128K/+2 support (also works with 48K)
DISCiPLE/Plus D disc support
No joystick port
Software enable/disable
"Hypertape" recording (?)
Todo ...
Multiface 3
-----------
+2A/+2B/+3/3B support (doesn't work with 48K/128K/+2)
+3 disk support
Todo ...
Multiprint
----------
Version ? multiface with Centronics printer interface
Todo ...
*********************************************************************/
#include "emu.h"
#include "mface.h"
/***************************************************************************
DEVICE DEFINITIONS
***************************************************************************/
DEFINE_DEVICE_TYPE(SPECTRUM_MFACE1, spectrum_mface1_device, "spectrum_mface1", "Multiface One")
DEFINE_DEVICE_TYPE(SPECTRUM_MFACE128, spectrum_mface128_device, "spectrum_mface128", "Multiface 128")
DEFINE_DEVICE_TYPE(SPECTRUM_MFACE3, spectrum_mface3_device, "spectrum_mface3", "Multiface 3")
DEFINE_DEVICE_TYPE(SPECTRUM_MPRINT, spectrum_mprint_device, "spectrum_mprint", "MultiPrint")
//-------------------------------------------------
// INPUT_PORTS( mface )
//-------------------------------------------------
INPUT_PORTS_START( mface )
PORT_START("BUTTON")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_NAME("Red Button") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHANGED_MEMBER(DEVICE_SELF, spectrum_mface_base_device, magic_button, 0)
INPUT_PORTS_END
INPUT_PORTS_START( mface1 )
PORT_INCLUDE( mface )
PORT_START("CONFIG")
PORT_CONFNAME(0x01, 0x00, "Joystick Enable Jumper")
PORT_CONFSETTING(0x00, "Closed")
PORT_CONFSETTING(0x01, "Open")
PORT_BIT(0xfe, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("JOY")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT) PORT_8WAY
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT) PORT_8WAY
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN) PORT_8WAY
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP) PORT_8WAY
PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_BUTTON1)
INPUT_PORTS_END
//-------------------------------------------------
// input_ports - device-specific input ports
//-------------------------------------------------
ioport_constructor spectrum_mface_base_device::device_input_ports() const
{
return INPUT_PORTS_NAME(mface);
}
ioport_constructor spectrum_mface1_device::device_input_ports() const
{
return INPUT_PORTS_NAME(mface1);
}
//-------------------------------------------------
// ROM( mface )
//-------------------------------------------------
ROM_START(mface1)
ROM_REGION(0x2000, "rom", 0)
ROM_DEFAULT_BIOS("mu21e7")
ROM_SYSTEM_BIOS(0, "mu12cb", "MU12 CB") // Very early version, 2KB RAM, page out port 0x5F
ROMX_LOAD("mf1_12_cb.rom", 0x0000, 0x2000, CRC(c88fbf9f) SHA1(c3018d1b495b8bc0a135038db0987de7091c9d4c), ROM_BIOS(0))
ROM_SYSTEM_BIOS(1, "mu2023", "MU 2.0 23") // pokes only (no toolkit), page out port 0x5F
ROMX_LOAD("mf1_20_23.rom", 0x0000, 0x2000, CRC(d4ae8953) SHA1(b442eb634a72fb63f1ccbbd0021a7a581152888d), ROM_BIOS(1))
ROM_SYSTEM_BIOS(2, "mu20fe", "MU 2.0 FE") // pokes only (no toolkit)
ROMX_LOAD("mf1_20_fe.rom", 0x0000, 0x2000, CRC(fa1b8b0d) SHA1(20cd508b0143166558a7238c7a9ccfbe37b90b0d), ROM_BIOS(2))
ROM_SYSTEM_BIOS(3, "mu2167", "MU 2.1 67") // Kempston Disc support, no Beta support
ROMX_LOAD("mf1_21_67.rom", 0x0000, 0x2000, CRC(d720ec1b) SHA1(91a40d8f503ef825df3e2ed712897dbf4ca3671d), ROM_BIOS(3))
ROM_SYSTEM_BIOS(4, "mu21e4", "MU 2.1 E4") // the most common version
ROMX_LOAD("mf1_21_e4.rom", 0x0000, 0x2000, CRC(4b31a971) SHA1(ba28754a3cc31a4ca579829ed4310c313409cf5d), ROM_BIOS(4))
ROM_SYSTEM_BIOS(5, "mu21e7", "MU 2.1 E7") // last known version?
ROMX_LOAD("mf1_21_e7.rom", 0x0000, 0x2000, CRC(670f0ec2) SHA1(50fba2d628f3a2e9219f72980e4efd62fc9ec1f8), ROM_BIOS(5))
ROM_SYSTEM_BIOS(6, "bc96", "Brazilian clone 96") // Brazilian clone, unknown pcb version
ROMX_LOAD("mf1_bc_96.rom", 0x0000, 0x2000, CRC(e6fe4507) SHA1(a7e03e7fee3aa05ce1501072aab4534ea7bae257), ROM_BIOS(6))
ROM_END
/* Todo ...
ROM_SYSTEM_BIOS(?, "mu2090", "MU 2.0, 90") // pokes only or full toolkit? NO DUMP?
ROMX_LOAD("mf1_20_90.rom", 0x0000, 0x2000, CRC(2eaf8e41) SHA1(?), ROM_BIOS(?))
ROM_SYSTEM_BIOS(?, "bc93", "Brazilian clone 93") // NO DUMP?
ROMX_LOAD("mf1_bc_93.rom", 0x0000, 0x2000, CRC(8c17113b) SHA1(?), ROM_BIOS(?))
*/
ROM_START(mface128)
ROM_REGION(0x2000, "rom", 0)
ROM_DEFAULT_BIOS("v363c")
ROM_SYSTEM_BIOS(0, "v340d", "87.1 V34 0D")
ROMX_LOAD("mf128_34_0d.rom", 0x0000, 0x2000, CRC(8d8cfd39) SHA1(2104962bb6097e58fcab63969bbaca424a872bb5), ROM_BIOS(0))
ROM_SYSTEM_BIOS(1, "v350d", "87.12 V35 0F")
ROMX_LOAD("mf128_35_0f.rom", 0x0000, 0x2000, CRC(cfefd560) SHA1(6cd6fd2c0fbb40a989a568db9d08ba8eed49cbbd), ROM_BIOS(1))
ROM_SYSTEM_BIOS(2, "vxx0f", "87.2 Vxx 1D") // unknown PCB version
ROMX_LOAD("mf128_xx_1d.rom", 0x0000, 0x2000, CRC(f473991e) SHA1(f03f4ecbcf4a654f4775d16bda0d4cc47f884379), ROM_BIOS(2))
ROM_SYSTEM_BIOS(3, "v363c", "87.2 V36 3C")
ROMX_LOAD("mf128_36_3c.rom", 0x0000, 0x2000, CRC(78ec8cfd) SHA1(8df204ab490b87c389971ce0c7fb5f9cbd281f14), ROM_BIOS(3))
ROM_END
ROM_START(mface3)
ROM_REGION(0x2000, "rom", 0)
ROM_DEFAULT_BIOS("v50fe")
ROM_SYSTEM_BIOS(0, "v5013", "V50 13")
ROMX_LOAD("mf3_50_13.rom", 0x0000, 0x2000, CRC(2d594640) SHA1(5d74d2e2e5a537639da92ff120f8a6d86f474495), ROM_BIOS(0))
ROM_SYSTEM_BIOS(1, "v50fe", "V50 FE")
ROMX_LOAD("mf3_50_fe.rom", 0x0000, 0x2000, CRC(b5c00f28) SHA1(983699a07665186f498f5827f9b35c442c2178ba), ROM_BIOS(1))
ROM_SYSTEM_BIOS(2, "vxx9a", "Hard Micro Multiface 3 clone Vxx 9a")
ROMX_LOAD("mf3_hm_9a.rom", 0x0000, 0x2000, CRC(2ce53095) SHA1(5fa286f1552f26575a14ab32125d59c26ce95978), ROM_BIOS(2))
ROM_IGNORE(0x2000) // ROM is 16K, but contains two identical 8K halves
ROM_END
ROM_START(mprint)
ROM_REGION(0x2000, "rom", 0)
ROM_DEFAULT_BIOS("mpa8")
ROM_SYSTEM_BIOS(0, "mp5a", "MP 5A")
ROMX_LOAD("mprint_5a.rom", 0x0000, 0x2000, CRC(3a26e84b) SHA1(4714469bf25f69291f61188f52bfb11fbb8d0b33), ROM_BIOS(0))
ROM_SYSTEM_BIOS(1, "mpa8", "MP A8")
ROMX_LOAD("mprint_a8.rom", 0x0000, 0x2000, CRC(a5c58022) SHA1(1356bfae3264b952f83a33e25af536c0f13f50e7), ROM_BIOS(1))
ROM_END
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
void spectrum_mface_base_device::device_add_mconfig(machine_config &config)
{
/* passthru */
SPECTRUM_EXPANSION_SLOT(config, m_exp, spectrum_expansion_devices, nullptr);
m_exp->irq_handler().set(DEVICE_SELF_OWNER, FUNC(spectrum_expansion_slot_device::irq_w));
m_exp->nmi_handler().set(DEVICE_SELF_OWNER, FUNC(spectrum_expansion_slot_device::nmi_w));
}
const tiny_rom_entry *spectrum_mface1_device::device_rom_region() const
{
return ROM_NAME(mface1);
}
const tiny_rom_entry *spectrum_mface128_device::device_rom_region() const
{
return ROM_NAME(mface128);
}
const tiny_rom_entry *spectrum_mface3_device::device_rom_region() const
{
return ROM_NAME(mface3);
}
const tiny_rom_entry *spectrum_mprint_device::device_rom_region() const
{
return ROM_NAME(mprint);
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// spectrum_mface_base_device - constructor
//-------------------------------------------------
spectrum_mface_base_device::spectrum_mface_base_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, type, tag, owner, clock)
, device_spectrum_expansion_interface(mconfig, *this)
, m_rom(*this, "rom")
, m_exp(*this, "exp")
{
}
spectrum_mface1_device::spectrum_mface1_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: spectrum_mface_base_device(mconfig, SPECTRUM_MFACE1, tag, owner, clock)
, m_joy(*this, "JOY")
, m_hwconfig(*this, "CONFIG")
{
}
spectrum_mface128_device::spectrum_mface128_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: spectrum_mface_base_device(mconfig, SPECTRUM_MFACE128, tag, owner, clock)
{
}
spectrum_mface3_device::spectrum_mface3_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: spectrum_mface_base_device(mconfig, SPECTRUM_MFACE3, tag, owner, clock)
{
}
spectrum_mprint_device::spectrum_mprint_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: spectrum_mface_base_device(mconfig, SPECTRUM_MPRINT, tag, owner, clock)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void spectrum_mface_base_device::device_start()
{
save_item(NAME(m_romcs));
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void spectrum_mface_base_device::device_reset()
{
m_romcs = 0;
}
//**************************************************************************
// IMPLEMENTATION
//**************************************************************************
READ_LINE_MEMBER(spectrum_mface_base_device::romcs)
{
return m_romcs | m_exp->romcs();
}
void spectrum_mface_base_device::pre_opcode_fetch(offs_t offset)
{
m_exp->pre_opcode_fetch(offset);
if (!machine().side_effects_disabled())
{
if (offset == 0x0066)
m_romcs = 1;
}
}
uint8_t spectrum_mface1_device::iorq_r(offs_t offset)
{
uint8_t data = m_exp->iorq_r(offset);
if (!machine().side_effects_disabled())
{
switch (offset & 0xff)
{
case 0x1f:
m_romcs = 0;
if (!(m_hwconfig->read() & 0x01)) // joystick disable jumper
data = m_joy->read() & 0x1f;
break;
case 0x9f:
m_romcs = 1;
break;
}
}
return data;
}
uint8_t spectrum_mface128_device::iorq_r(offs_t offset)
{
uint8_t data = m_exp->iorq_r(offset);
if (!machine().side_effects_disabled())
{
switch (offset & 0xff)
{
case 0xbf:
m_romcs = 1;
break;
case 0x3f:
m_romcs = 0;
break;
}
}
return data;
}
uint8_t spectrum_mface3_device::iorq_r(offs_t offset)
{
uint8_t data = m_exp->iorq_r(offset);
if (!machine().side_effects_disabled())
{
switch (offset & 0xff)
{
case 0x3f:
m_romcs = 1;
break;
case 0xbf:
m_romcs = 0;
break;
}
}
return data;
}
uint8_t spectrum_mprint_device::iorq_r(offs_t offset)
{
uint8_t data = m_exp->iorq_r(offset);
if (!machine().side_effects_disabled())
{
switch (offset & 0xff)
{
case 0xbb:
m_romcs = 1;
break;
case 0xbf:
m_romcs = 0;
break;
}
}
return data;
}
void spectrum_mface1_device::iorq_w(offs_t offset, uint8_t data)
{
switch (offset & 0xff)
{
case 0x1f:
m_slot->nmi_w(CLEAR_LINE);
break;
}
m_exp->iorq_w(offset, data);
}
uint8_t spectrum_mface_base_device::mreq_r(offs_t offset)
{
uint8_t data = 0xff;
if (m_romcs)
{
switch (offset & 0xe000)
{
case 0x0000:
data = m_rom->base()[offset & 0x1fff];
break;
case 0x2000:
data = m_ram[offset & 0x1fff];
break;
}
}
if (m_exp->romcs())
data &= m_exp->mreq_r(offset);
return data;
}
void spectrum_mface_base_device::mreq_w(offs_t offset, uint8_t data)
{
if (m_romcs)
{
switch (offset & 0xe000)
{
case 0x2000:
m_ram[offset & 0x1fff] = data;
break;
}
}
if (m_exp->romcs())
m_exp->mreq_w(offset, data);
}
INPUT_CHANGED_MEMBER(spectrum_mface_base_device::magic_button)
{
if (newval && !oldval)
{
m_slot->nmi_w(ASSERT_LINE);
}
else
{
m_slot->nmi_w(CLEAR_LINE);
}
}
INPUT_CHANGED_MEMBER(spectrum_mface1_device::magic_button)
{
if (newval && !oldval) // key released
{
}
else // key pressed
{
m_slot->nmi_w(ASSERT_LINE);
}
}
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