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https://github.com/holub/mame
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bbc: Added Torch Z80 Communicator as Tube slot device.
This commit is contained in:
Nigel Barnes
parent
f6ddda9fbd
commit
a02ec54132
@ -308,6 +308,8 @@ if (BUSES["BBC_TUBE"]~=null) then
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MAME_DIR .. "src/devices/bus/bbc/tube/tube_casper.h",
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MAME_DIR .. "src/devices/bus/bbc/tube/tube_z80.cpp",
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MAME_DIR .. "src/devices/bus/bbc/tube/tube_z80.h",
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MAME_DIR .. "src/devices/bus/bbc/tube/tube_zep100.cpp",
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MAME_DIR .. "src/devices/bus/bbc/tube/tube_zep100.h",
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}
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end
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@ -128,7 +128,7 @@ WRITE8_MEMBER(bbc_tube_slot_device::host_w)
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#include "tube_casper.h"
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//#include "tube_x25.h"
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#include "tube_z80.h"
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//#include "tube_zep100.h"
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#include "tube_zep100.h"
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//-------------------------------------------------
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@ -144,7 +144,7 @@ SLOT_INTERFACE_START( bbc_extube_devices )
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SLOT_INTERFACE("80286", BBC_TUBE_80286) /* Acorn 80286 2nd Processor */
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// SLOT_INTERFACE("a500", BBC_TUBE_A500) /* Acorn A500 2nd Processor */
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SLOT_INTERFACE("casper", BBC_TUBE_CASPER) /* Casper 68000 2nd Processor */
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// SLOT_INTERFACE("zep100", BBC_TUBE_ZEP100) /* Torch Z80 Communicator (ZEP100) */
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SLOT_INTERFACE("zep100", BBC_TUBE_ZEP100) /* Torch Z80 Communicator (ZEP100) */
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/* Acorn ANC21 Universal 2nd Processor Unit */
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SLOT_INTERFACE("65c102", BBC_TUBE_65C102) /* Acorn ADC06 65C102 co-processor */
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SLOT_INTERFACE("80186", BBC_TUBE_80186) /* Acorn ADC08 80186 co-processor */
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202
src/devices/bus/bbc/tube/tube_zep100.cpp
Normal file
202
src/devices/bus/bbc/tube/tube_zep100.cpp
Normal file
@ -0,0 +1,202 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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/**********************************************************************
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Torch Z80 Communicator (ZEP100)
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http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/Torch_Z802ndproc.html
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**********************************************************************/
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#include "emu.h"
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#include "tube_zep100.h"
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#include "softlist_dev.h"
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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DEFINE_DEVICE_TYPE(BBC_TUBE_ZEP100, bbc_tube_zep100_device, "bbc_tube_zep100", "Torch Z80 Communicator")
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//-------------------------------------------------
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// ADDRESS_MAP( tube_zep100_mem )
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//-------------------------------------------------
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static ADDRESS_MAP_START(tube_zep100_mem, AS_PROGRAM, 8, bbc_tube_zep100_device)
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AM_RANGE(0x0000, 0xffff) AM_READWRITE(mem_r, mem_w)
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ADDRESS_MAP_END
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//-------------------------------------------------
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// ADDRESS_MAP( tube_zep100_io )
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//-------------------------------------------------
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static ADDRESS_MAP_START(tube_zep100_io, AS_IO, 8, bbc_tube_zep100_device)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(0x00, 0x07) AM_MIRROR(0xff00) AM_READWRITE(io_r, io_w)
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ADDRESS_MAP_END
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//-------------------------------------------------
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// ROM( tube_zep100 )
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//-------------------------------------------------
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ROM_START( tube_zep100 )
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ROM_REGION(0x2000, "rom", 0)
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ROM_DEFAULT_BIOS("cccp102")
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ROM_SYSTEM_BIOS(0, "cccp102", "CCCP 1.02")
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ROMX_LOAD("CCCP102.rom", 0x0000, 0x2000, CRC(2eb40a21) SHA1(e6ee738e5f2f8556002b79d18caa8ef21f14e08d), ROM_BIOS(1))
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ROM_SYSTEM_BIOS(1, "cccp094", "CCCP 0.94")
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ROMX_LOAD("CCCP094.rom", 0x0000, 0x2000, CRC(49989bd4) SHA1(62b57c858a3baa4ff943c31f77d331c414772a61), ROM_BIOS(2))
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ROM_END
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//-------------------------------------------------
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// device_add_mconfig - add device configuration
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//-------------------------------------------------
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MACHINE_CONFIG_MEMBER(bbc_tube_zep100_device::device_add_mconfig )
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MCFG_CPU_ADD("z80", Z80, XTAL_4MHz)
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MCFG_CPU_PROGRAM_MAP(tube_zep100_mem)
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MCFG_CPU_IO_MAP(tube_zep100_io)
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MCFG_DEVICE_ADD("via", VIA6522, XTAL_4MHz / 2)
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MCFG_VIA6522_WRITEPB_HANDLER(WRITE8(bbc_tube_zep100_device, via_pb_w))
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MCFG_VIA6522_CB2_HANDLER(DEVWRITELINE("ppi", i8255_device, pc2_w))
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MCFG_VIA6522_CA2_HANDLER(DEVWRITELINE("ppi", i8255_device, pc6_w))
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MCFG_VIA6522_IRQ_HANDLER(DEVWRITELINE(DEVICE_SELF_OWNER, bbc_tube_slot_device, irq_w))
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MCFG_DEVICE_ADD("ppi", I8255A, 0)
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MCFG_I8255_OUT_PORTA_CB(DEVWRITE8("via", via6522_device, write_pa))
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MCFG_I8255_IN_PORTB_CB(READ8(bbc_tube_zep100_device, ppi_pb_r))
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MCFG_I8255_OUT_PORTC_CB(WRITE8(bbc_tube_zep100_device, ppi_pc_w))
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/* internal ram */
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MCFG_RAM_ADD(RAM_TAG)
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MCFG_RAM_DEFAULT_SIZE("64K")
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MCFG_RAM_DEFAULT_VALUE(0x00)
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/* software lists */
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MCFG_SOFTWARE_LIST_ADD("flop_ls_torch", "bbc_flop_torch")
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MACHINE_CONFIG_END
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//-------------------------------------------------
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// rom_region - device-specific ROM region
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//-------------------------------------------------
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const tiny_rom_entry *bbc_tube_zep100_device::device_rom_region() const
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{
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return ROM_NAME( tube_zep100 );
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// bbc_tube_zep100_device - constructor
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//-------------------------------------------------
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bbc_tube_zep100_device::bbc_tube_zep100_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, BBC_TUBE_ZEP100, tag, owner, clock),
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device_bbc_tube_interface(mconfig, *this),
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m_z80(*this, "z80"),
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m_via(*this, "via"),
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m_ppi(*this, "ppi"),
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m_ram(*this, "ram"),
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m_rom(*this, "rom"),
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m_port_b(0),
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m_rom_enabled(true)
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void bbc_tube_zep100_device::device_start()
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{
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m_slot = dynamic_cast<bbc_tube_slot_device *>(owner());
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void bbc_tube_zep100_device::device_reset()
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{
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m_via->reset();
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m_rom_enabled = true;
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}
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//**************************************************************************
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// IMPLEMENTATION
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//**************************************************************************
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READ8_MEMBER(bbc_tube_zep100_device::host_r)
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{
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return m_via->read(space, offset & 0x0f);
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}
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WRITE8_MEMBER(bbc_tube_zep100_device::host_w)
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{
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if (offset & 0x10)
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m_z80->reset();
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m_via->write(space, offset & 0x0f, data);
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}
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READ8_MEMBER(bbc_tube_zep100_device::mem_r)
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{
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uint8_t data;
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if (m_rom_enabled)
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data = m_rom->base()[offset];
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else
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data = m_ram->pointer()[offset];
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return data;
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}
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WRITE8_MEMBER(bbc_tube_zep100_device::mem_w)
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{
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m_ram->pointer()[offset] = data;
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}
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READ8_MEMBER(bbc_tube_zep100_device::io_r)
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{
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uint8_t data = 0xff;
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if (!machine().side_effect_disabled())
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m_rom_enabled = !BIT(offset, 2);
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data = m_ppi->read(space, offset & 0x03);
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return data;
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}
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WRITE8_MEMBER(bbc_tube_zep100_device::io_w)
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{
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m_ppi->write(space, offset & 0x03, data);
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}
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WRITE8_MEMBER(bbc_tube_zep100_device::via_pb_w)
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{
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m_port_b = data;
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}
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READ8_MEMBER(bbc_tube_zep100_device::ppi_pb_r)
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{
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return m_port_b;
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}
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WRITE8_MEMBER(bbc_tube_zep100_device::ppi_pc_w)
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{
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m_via->write_ca1(BIT(data, 7));
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m_via->write_cb1(BIT(data, 1));
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}
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72
src/devices/bus/bbc/tube/tube_zep100.h
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72
src/devices/bus/bbc/tube/tube_zep100.h
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@ -0,0 +1,72 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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/**********************************************************************
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Torch Z80 Communicator (ZEP100)
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http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/Torch_Z802ndproc.html
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**********************************************************************/
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#ifndef MAME_BUS_BBC_TUBE_ZEP100_H
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#define MAME_BUS_BBC_TUBE_ZEP100_H
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#include "tube.h"
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#include "cpu/z80/z80.h"
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#include "machine/6522via.h"
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#include "machine/i8255.h"
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#include "machine/ram.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> bbc_tube_zep100_device
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class bbc_tube_zep100_device :
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public device_t,
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public device_bbc_tube_interface
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{
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public:
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// construction/destruction
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bbc_tube_zep100_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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DECLARE_READ8_MEMBER( mem_r );
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DECLARE_WRITE8_MEMBER( mem_w );
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DECLARE_READ8_MEMBER( io_r );
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DECLARE_WRITE8_MEMBER( io_w );
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DECLARE_WRITE8_MEMBER( via_pb_w );
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DECLARE_READ8_MEMBER( ppi_pb_r );
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DECLARE_WRITE8_MEMBER( ppi_pc_w );
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protected:
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// device-level overrides
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virtual void device_start() override;
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virtual void device_reset() override;
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// optional information overrides
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virtual void device_add_mconfig(machine_config &config) override;
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virtual const tiny_rom_entry *device_rom_region() const override;
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virtual DECLARE_READ8_MEMBER( host_r ) override;
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virtual DECLARE_WRITE8_MEMBER( host_w ) override;
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private:
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required_device<cpu_device> m_z80;
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required_device<via6522_device> m_via;
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required_device<i8255_device> m_ppi;
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required_device<ram_device> m_ram;
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required_memory_region m_rom;
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uint8_t m_port_b;
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bool m_rom_enabled;
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};
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// device type definition
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DECLARE_DEVICE_TYPE(BBC_TUBE_ZEP100, bbc_tube_zep100_device)
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#endif /* MAME_BUS_BBC_TUBE_ZEP100_H */
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