mirror of
https://github.com/holub/mame
synced 2025-10-05 08:41:31 +03:00
abc310: Added 80286 2nd processor.
This commit is contained in:
Nigel Barnes
parent
5911529240
commit
a65015f5cb
@ -300,6 +300,8 @@ if (BUSES["BBC_TUBE"]~=null) then
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MAME_DIR .. "src/devices/bus/bbc/tube/tube_65c102.h",
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MAME_DIR .. "src/devices/bus/bbc/tube/tube_80186.cpp",
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MAME_DIR .. "src/devices/bus/bbc/tube/tube_80186.h",
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MAME_DIR .. "src/devices/bus/bbc/tube/tube_80286.cpp",
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MAME_DIR .. "src/devices/bus/bbc/tube/tube_80286.h",
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MAME_DIR .. "src/devices/bus/bbc/tube/tube_casper.cpp",
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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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@ -123,7 +123,7 @@ WRITE8_MEMBER(bbc_tube_slot_device::host_w)
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#include "tube_6502.h"
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#include "tube_65c102.h"
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#include "tube_80186.h"
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//#include "tube_80286.h"
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#include "tube_80286.h"
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//#include "tube_arm.h"
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#include "tube_casper.h"
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//#include "tube_x25.h"
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@ -141,7 +141,7 @@ SLOT_INTERFACE_START( bbc_extube_devices )
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// SLOT_INTERFACE("32016", BBC_TUBE_32016) /* Acorn ANC05 32016 2nd processor */
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// SLOT_INTERFACE("camb", BBC_TUBE_CAMB) /* Acorn ANC06 Cambridge Co-Processor */
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// SLOT_INTERFACE("arm", BBC_TUBE_ARM) /* Acorn ANC13 ARM Evaluation System */
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// SLOT_INTERFACE("80286", BBC_TUBE_80286) /* Acorn 80286 2nd Processor */
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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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155
src/devices/bus/bbc/tube/tube_80286.cpp
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155
src/devices/bus/bbc/tube/tube_80286.cpp
Normal file
@ -0,0 +1,155 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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/**********************************************************************
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Acorn 80286 2nd Processor
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**********************************************************************/
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#include "emu.h"
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#include "tube_80286.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_80286, bbc_tube_80286_device, "bbc_tube_80286", "Acorn 80286 2nd Processor")
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//-------------------------------------------------
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// ADDRESS_MAP( tube_80286_mem )
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//-------------------------------------------------
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static ADDRESS_MAP_START(tube_80286_mem, AS_PROGRAM, 16, bbc_tube_80286_device)
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ADDRESS_MAP_GLOBAL_MASK(0xfffff)
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AM_RANGE(0x00000, 0xbffff) AM_RAM AM_SHARE("ram")
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AM_RANGE(0xc0000, 0xc3fff) AM_ROM AM_REGION("bootstrap", 0) AM_MIRROR(0x3c000)
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ADDRESS_MAP_END
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//-------------------------------------------------
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// ADDRESS_MAP( tube_80286_io )
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//-------------------------------------------------
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static ADDRESS_MAP_START(tube_80286_io, AS_IO, 16, bbc_tube_80286_device)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(0x50, 0x51) AM_READ8(disable_boot_rom, 0x00ff)
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AM_RANGE(0x60, 0x61) AM_WRITE8(irq_latch_w, 0x00ff)
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AM_RANGE(0x80, 0x8f) AM_DEVREADWRITE8("ula", tube_device, parasite_r, parasite_w, 0x00ff)
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ADDRESS_MAP_END
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//-------------------------------------------------
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// ROM( tube_80286 )
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//-------------------------------------------------
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ROM_START( tube_80286 )
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ROM_REGION(0x4000, "bootstrap", 0)
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ROM_LOAD16_BYTE("M512_LO_IC31.rom", 0x0000, 0x2000, CRC(c0df8707) SHA1(7f6d843d5aea6bdb36cbd4623ae942b16b96069d)) // 2201,287-02
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ROM_LOAD16_BYTE("M512_HI_IC32.rom", 0x0001, 0x2000, CRC(e47f10b2) SHA1(45dc8d7e7936afbec6de423569d9005a1c350316)) // 2201,288-02
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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_80286_device::device_add_mconfig)
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MCFG_CPU_ADD("i80286", I80286, XTAL_12MHz / 2)
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MCFG_CPU_PROGRAM_MAP(tube_80286_mem)
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MCFG_CPU_IO_MAP(tube_80286_io)
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MCFG_CPU_IRQ_ACKNOWLEDGE_DEVICE(DEVICE_SELF, bbc_tube_80286_device, irq_callback)
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MCFG_TUBE_ADD("ula")
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MCFG_TUBE_PNMI_HANDLER(INPUTLINE("i80286", INPUT_LINE_NMI))
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MCFG_TUBE_PIRQ_HANDLER(INPUTLINE("i80286", INPUT_LINE_INT0))
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/* internal ram */
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MCFG_RAM_ADD(RAM_TAG)
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MCFG_RAM_DEFAULT_SIZE("1M")
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/* software lists */
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MCFG_SOFTWARE_LIST_ADD("flop_ls_80186", "bbc_flop_80186")
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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_80286_device::device_rom_region() const
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{
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return ROM_NAME( tube_80286 );
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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_80286_device - constructor
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//-------------------------------------------------
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bbc_tube_80286_device::bbc_tube_80286_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, BBC_TUBE_80286, tag, owner, clock),
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device_bbc_tube_interface(mconfig, *this),
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m_i80286(*this, "i80286"),
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m_ula(*this, "ula"),
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m_ram(*this, "ram"),
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m_bootstrap(*this, "bootstrap")
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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_80286_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_80286_device::device_reset()
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{
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m_ula->reset();
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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_80286_device::host_r)
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{
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return m_ula->host_r(space, offset);
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}
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WRITE8_MEMBER(bbc_tube_80286_device::host_w)
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{
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m_ula->host_w(space, offset, data);
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}
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READ8_MEMBER(bbc_tube_80286_device::disable_boot_rom)
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{
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m_i80286->space(AS_PROGRAM).install_ram(0xc0000, 0xfffff, m_ram->pointer() + 0xc0000);
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return 0xff;
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}
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WRITE8_MEMBER(bbc_tube_80286_device::irq_latch_w)
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{
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m_irq_latch = data;
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}
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//-------------------------------------------------
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// irq vector callback
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//-------------------------------------------------
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IRQ_CALLBACK_MEMBER(bbc_tube_80286_device::irq_callback)
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{
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return m_irq_latch;
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}
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63
src/devices/bus/bbc/tube/tube_80286.h
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63
src/devices/bus/bbc/tube/tube_80286.h
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@ -0,0 +1,63 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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/**********************************************************************
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Acorn 80286 2nd Processor
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**********************************************************************/
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#ifndef MAME_BUS_BBC_TUBE_80286_H
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#define MAME_BUS_BBC_TUBE_80286_H
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#include "tube.h"
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#include "cpu/i86/i286.h"
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#include "machine/ram.h"
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#include "machine/tube.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> bbc_tube_80286_device
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class bbc_tube_80286_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_80286_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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DECLARE_READ8_MEMBER( disable_boot_rom );
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DECLARE_WRITE8_MEMBER( irq_latch_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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uint8_t m_irq_latch;
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IRQ_CALLBACK_MEMBER( irq_callback );
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required_device<i80286_cpu_device> m_i80286;
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required_device<tube_device> m_ula;
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required_device<ram_device> m_ram;
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required_memory_region m_bootstrap;
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};
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// device type definition
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DECLARE_DEVICE_TYPE(BBC_TUBE_80286, bbc_tube_80286_device)
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#endif /* MAME_BUS_BBC_TUBE_80286_H */
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@ -777,7 +777,8 @@ FLOPPY_FORMATS_MEMBER( bbc_state::floppy_formats_bbc )
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FLOPPY_OPUS_DDOS_FORMAT,
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FLOPPY_OPUS_DDCPM_FORMAT,
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FLOPPY_TORCH_CPN_FORMAT,
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FLOPPY_FSD_FORMAT
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FLOPPY_FSD_FORMAT,
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FLOPPY_PC_FORMAT
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FLOPPY_FORMATS_END0
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FLOPPY_FORMATS_MEMBER( bbc_state::floppy_formats_bbcm )
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@ -1208,9 +1209,9 @@ static MACHINE_CONFIG_DERIVED( abc310, bbcbp )
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MCFG_DEVICE_REMOVE("wd1770:1")
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/* Add 80286 co-processor */
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//MCFG_DEVICE_MODIFY("tube")
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//MCFG_SLOT_DEFAULT_OPTION("80286")
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//MCFG_SLOT_FIXED(true)
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MCFG_DEVICE_MODIFY("tube")
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MCFG_SLOT_DEFAULT_OPTION("80286")
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MCFG_SLOT_FIXED(true)
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/* Add ADAPTEC ACB-4000 Winchester Disc Controller */
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