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author Nigel Barnes <Pernod70@users.noreply.github.com>2019-03-23 11:55:09 +0000
committer Nigel Barnes <Pernod70@users.noreply.github.com>2019-03-23 11:55:09 +0000
commit9e122168ef4fdbb9158bc8a4fd0e5e86900496f0 (patch)
treed3ba3c8087a701574e0bacb8ae9c24fd0d084069 /src/devices/bus/bbc
parentb445d101357be7d62f3dee88d29e66bfc59a5bc3 (diff)
ns32000: Skeleton CPU device with disassembler for NS32000 family.
bbc: Added preliminary Acorn 32016 2nd Processor, incomplete CPU emulation.
Diffstat (limited to 'src/devices/bus/bbc')
-rw-r--r--src/devices/bus/bbc/tube/tube.cpp12
-rw-r--r--src/devices/bus/bbc/tube/tube_32016.cpp210
-rw-r--r--src/devices/bus/bbc/tube/tube_32016.h71
3 files changed, 288 insertions, 5 deletions
diff --git a/src/devices/bus/bbc/tube/tube.cpp b/src/devices/bus/bbc/tube/tube.cpp
index c0ff49915a6..602ea3c845a 100644
--- a/src/devices/bus/bbc/tube/tube.cpp
+++ b/src/devices/bus/bbc/tube/tube.cpp
@@ -112,6 +112,7 @@ void bbc_tube_slot_device::host_w(offs_t offset, uint8_t data)
// slot devices
+#include "tube_32016.h"
#include "tube_6502.h"
#include "tube_80186.h"
#include "tube_80286.h"
@@ -133,7 +134,7 @@ void bbc_tube_devices(device_slot_interface &device)
{
device.option_add("6502", BBC_TUBE_6502); /* Acorn ANC01 6502 2nd processor */
device.option_add("z80", BBC_TUBE_Z80); /* Acorn ANC04 Z80 2nd processor */
- //device.option_add("32016", BBC_TUBE_32016); /* Acorn ANC05 32016 2nd processor */
+ device.option_add("32016", BBC_TUBE_32016); /* Acorn ANC05 32016 2nd processor */
device.option_add("arm", BBC_TUBE_ARM); /* Acorn ANC13 ARM Evaluation System */
device.option_add("80286", BBC_TUBE_80286); /* Acorn 80286 2nd Processor */
//device.option_add("a500", BBC_TUBE_A500); /* Acorn A500 2nd Processor */
@@ -142,8 +143,8 @@ void bbc_tube_devices(device_slot_interface &device)
//device.option_add("hdp68k", BBC_TUBE_HDP68K); /* Torch Unicorn (HDP68K) */
//device.option_add("x25", BBC_TUBE_X25); /* Econet X25 Gateway */
device.option_add("zep100", BBC_TUBE_ZEP100); /* Torch Z80 Communicator (ZEP100) (Torch) */
- //device.option_add("zep100l", BBC_TUBE_ZEP100L); /* Torch Z80 Communicator (ZEP100) (Acorn 8271) */
- //device.option_add("zep100w", BBC_TUBE_ZEP100W); /* Torch Z80 Communicator (ZEP100) (Acorn 1770) */
+ //device.option_add("zep100l", BBC_TUBE_ZEP100L); /* Torch Z80 Communicator (ZEP100) (Model B) */
+ //device.option_add("zep100w", BBC_TUBE_ZEP100W); /* Torch Z80 Communicator (ZEP100) (Model B+) */
/* Acorn ANC21 Universal 2nd Processor Unit */
device.option_add("65c102", BBC_TUBE_65C102); /* Acorn ADC06 65C102 co-processor */
device.option_add("80186", BBC_TUBE_80186); /* Acorn ADC08 80186 co-processor */
@@ -160,11 +161,12 @@ void bbc_extube_devices(device_slot_interface &device)
{
device.option_add("6502", BBC_TUBE_6502); /* Acorn ANC01 6502 2nd processor */
device.option_add("z80", BBC_TUBE_Z80); /* Acorn ANC04 Z80 2nd processor */
- //device.option_add("32016", BBC_TUBE_32016); /* Acorn ANC05 32016 2nd processor */
+ device.option_add("32016", BBC_TUBE_32016); /* Acorn ANC05 32016 2nd processor */
device.option_add("arm", BBC_TUBE_ARM); /* Acorn ANC13 ARM Evaluation System */
device.option_add("80286", BBC_TUBE_80286); /* Acorn 80286 2nd Processor */
//device.option_add("a500", BBC_TUBE_A500); /* Acorn A500 2nd Processor */
//device.option_add("pmsb2p", BBC_TUBE_PMSB2P); /* PMS B2P-6502 */
+ //device.option_add("zep100m", BBC_TUBE_ZEP100M); /* Torch Z80 Communicator (ZEP100) (Master) */
/* Acorn ANC21 Universal 2nd Processor Unit */
device.option_add("65c102", BBC_TUBE_65C102); /* Acorn ADC06 65C102 co-processor */
device.option_add("80186", BBC_TUBE_80186); /* Acorn ADC08 80186 co-processor */
@@ -181,7 +183,6 @@ void bbc_intube_devices(device_slot_interface &device)
{
device.option_add("65c102", BBC_TUBE_65C102); /* Acorn ADC06 65C102 co-processor */
device.option_add("80186", BBC_TUBE_80186); /* Acorn ADC08 80186 co-processor */
- //device.option_add("zep100m", BBC_TUBE_ZEP100M); /* Torch Z80 Communicator (ZEP100) (Master) */
//device.option_add("arm7", BBC_TUBE_ARM7); /* Sprow ARM7 co-processor */
device.option_add("rc6502", BBC_TUBE_RC6502); /* ReCo6502 (6502) */
device.option_add("rc65816", BBC_TUBE_RC65816); /* ReCo6502 (65816) */
@@ -196,6 +197,7 @@ void electron_tube_devices(device_slot_interface &device)
{
device.option_add("6502", BBC_TUBE_6502); /* Acorn ANC01 6502 2nd processor */
device.option_add("z80", BBC_TUBE_Z80); /* Acorn ANC04 Z80 2nd processor */
+ device.option_add("32016", BBC_TUBE_32016); /* Acorn ANC05 32016 2nd processor */
device.option_add("arm", BBC_TUBE_ARM); /* Acorn ANC13 ARM Evaluation System */
device.option_add("65c102", BBC_TUBE_65C102); /* Acorn ADC06 65C102 co-processor */
device.option_add("80186", BBC_TUBE_80186); /* Acorn ADC08 80186 co-processor */
diff --git a/src/devices/bus/bbc/tube/tube_32016.cpp b/src/devices/bus/bbc/tube/tube_32016.cpp
new file mode 100644
index 00000000000..7b6ac355e42
--- /dev/null
+++ b/src/devices/bus/bbc/tube/tube_32016.cpp
@@ -0,0 +1,210 @@
+// license:BSD-3-Clause
+// copyright-holders:Nigel Barnes
+/**********************************************************************
+
+ Acorn ANC05 32016 2nd processor
+
+ http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/Acorn_ANC05_320162ndproc.html
+
+ Acorn ANC06 Cambridge Co-Processor
+
+ http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/Acorn_ANC06_CamCoPro.html
+
+ IC1 (ULA) TUBE
+ IC2 (MMU) NS32082 Not fitted
+ IC3 (CPU) NS32016
+ IC4 (TCU) NS32201
+ IC20 (FPU) NS32081
+
+**********************************************************************/
+
+
+#include "emu.h"
+#include "tube_32016.h"
+#include "softlist_dev.h"
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE(BBC_TUBE_32016, bbc_tube_32016_device, "bbc_tube_32016", "Acorn 32016 2nd processor")
+
+
+//-------------------------------------------------
+// ADDRESS_MAP( tube_32016_mem )
+//-------------------------------------------------
+
+void bbc_tube_32016_device::tube_32016_mem(address_map &map)
+{
+ map(0x000000, 0xffffff).rw(FUNC(bbc_tube_32016_device::read), FUNC(bbc_tube_32016_device::write));
+ map(0xf90000, 0xf90001).portr("CONFIG");
+ map(0xfffff0, 0xffffff).rw("ula", FUNC(tube_device::parasite_r), FUNC(tube_device::parasite_w)).umask32(0x00ff);
+}
+
+//-------------------------------------------------
+// ROM( tube_32016 )
+//-------------------------------------------------
+
+ROM_START(tube_32016)
+ ROM_REGION(0x8000, "rom", 0)
+ ROM_DEFAULT_BIOS("200")
+ ROM_SYSTEM_BIOS(0, "200", "Pandora v2.00")
+ ROMX_LOAD("pan200lo.rom", 0x0000, 0x4000, CRC(b1980fd0) SHA1(8084f8896cd22953abefbd43c51e1a422b30e28d), ROM_SKIP(1) | ROM_BIOS(0)) // 0201-764-02 Pandora Lo
+ ROMX_LOAD("pan200hi.rom", 0x0001, 0x4000, CRC(cab98d6b) SHA1(dfad1f4180c50757a74fcfe3a0ee7d7b48eb1bee), ROM_SKIP(1) | ROM_BIOS(0)) // 0201-763-02 Pandora Hi
+ ROM_SYSTEM_BIOS(1, "100", "Pandora v1.00")
+ ROMX_LOAD("pan100.rom", 0x0000, 0x8000, BAD_DUMP CRC(75333006) SHA1(996cd120103039390c9b979b16c327bb95da72e4), ROM_BIOS(1)) // 0201-763-01, 0201-764-01 Pandora
+ ROM_SYSTEM_BIOS(2, "061", "Pandora v0.61")
+ ROMX_LOAD("pan061lo.rom", 0x0000, 0x4000, CRC(6f801b35) SHA1(ce31f7c10603f3d15a06a8e32bde40df0639e446), ROM_SKIP(1) | ROM_BIOS(2))
+ ROMX_LOAD("pan061hi.rom", 0x0001, 0x4000, CRC(c00b1ab0) SHA1(e6a705232278c518340ddc69ea51af91965fa332), ROM_SKIP(1) | ROM_BIOS(2))
+ROM_END
+
+//-------------------------------------------------
+// INPUT_PORTS( tube_32016 )
+//-------------------------------------------------
+
+static INPUT_PORTS_START(tube_32016)
+ PORT_START("CONFIG")
+ PORT_DIPNAME(0x80, 0x80, "H") PORT_DIPLOCATION("LKS:1")
+ PORT_DIPSETTING(0x80, "FPU")
+ PORT_DIPSETTING(0x00, "No FPU")
+
+ PORT_DIPNAME(0x40, 0x00, "G") PORT_DIPLOCATION("LKS:2")
+ PORT_DIPSETTING(0x40, "MMU")
+ PORT_DIPSETTING(0x00, "No MMU")
+
+ PORT_DIPNAME(0x20, 0x00, "F") PORT_DIPLOCATION("LKS:3")
+ PORT_DIPSETTING(0x20, "Reserved")
+ PORT_DIPSETTING(0x00, "Reserved")
+
+ PORT_DIPNAME(0x10, 0x00, "E") PORT_DIPLOCATION("LKS:4")
+ PORT_DIPSETTING(0x10, "Reserved")
+ PORT_DIPSETTING(0x00, "Reserved")
+
+ PORT_DIPNAME(0x08, 0x00, "D") PORT_DIPLOCATION("LKS:5")
+ PORT_DIPSETTING(0x08, "Reserved")
+ PORT_DIPSETTING(0x00, "Reserved")
+
+ PORT_DIPNAME(0x04, 0x00, "C") PORT_DIPLOCATION("LKS:6")
+ PORT_DIPSETTING(0x04, "Reserved")
+ PORT_DIPSETTING(0x00, "Reserved")
+
+ PORT_DIPNAME(0x02, 0x00, "B") PORT_DIPLOCATION("LKS:7")
+ PORT_DIPSETTING(0x02, "Reserved")
+ PORT_DIPSETTING(0x00, "Reserved")
+
+ PORT_DIPNAME(0x01, 0x00, "A") PORT_DIPLOCATION("LKS:8")
+ PORT_DIPSETTING(0x01, "Reserved")
+ PORT_DIPSETTING(0x00, "Reserved")
+INPUT_PORTS_END
+
+//-------------------------------------------------
+// device_add_mconfig - add device configuration
+//-------------------------------------------------
+
+void bbc_tube_32016_device::device_add_mconfig(machine_config &config)
+{
+ NS32016(config, m_maincpu, 12_MHz_XTAL / 2);
+ m_maincpu->set_addrmap(AS_PROGRAM, &bbc_tube_32016_device::tube_32016_mem);
+
+ TUBE(config, m_ula);
+ m_ula->pnmi_handler().set_inputline(m_maincpu, INPUT_LINE_NMI);
+ m_ula->pirq_handler().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
+
+ /* internal ram */
+ RAM(config, m_ram).set_default_size("1M").set_default_value(0);
+
+ /* software lists */
+ SOFTWARE_LIST(config, "flop_ls_32016").set_original("bbc_flop_32016");
+}
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const tiny_rom_entry *bbc_tube_32016_device::device_rom_region() const
+{
+ return ROM_NAME( tube_32016 );
+}
+
+//-------------------------------------------------
+// input_ports - device-specific input ports
+//-------------------------------------------------
+
+ioport_constructor bbc_tube_32016_device::device_input_ports() const
+{
+ return INPUT_PORTS_NAME( tube_32016 );
+}
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// bbc_tube_32016_device - constructor
+//-------------------------------------------------
+
+bbc_tube_32016_device::bbc_tube_32016_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+ : device_t(mconfig, BBC_TUBE_32016, tag, owner, clock)
+ , device_bbc_tube_interface(mconfig, *this)
+ , m_maincpu(*this, "maincpu")
+ , m_ula(*this, "ula")
+ , m_ram(*this, "ram")
+ , m_rom(*this, "rom")
+ , m_rom_enabled(true)
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void bbc_tube_32016_device::device_start()
+{
+}
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void bbc_tube_32016_device::device_reset()
+{
+ m_rom_enabled = true;
+}
+
+
+//**************************************************************************
+// IMPLEMENTATION
+//**************************************************************************
+
+uint8_t bbc_tube_32016_device::host_r(offs_t offset)
+{
+ return m_ula->host_r(offset);
+}
+
+void bbc_tube_32016_device::host_w(offs_t offset, uint8_t data)
+{
+ m_ula->host_w(offset, data);
+}
+
+
+READ8_MEMBER(bbc_tube_32016_device::read)
+{
+ uint16_t data = 0xffff;
+
+ if (m_rom_enabled)
+ data = m_rom->base()[offset & 0x3fff];
+ else if (offset < m_ram->size())
+ data = m_ram->pointer()[offset];
+
+ return data;
+}
+
+WRITE8_MEMBER(bbc_tube_32016_device::write)
+{
+ /* clear ROM select on first write */
+ if (!machine().side_effects_disabled()) m_rom_enabled = false;
+
+ if (offset < m_ram->size())
+ m_ram->pointer()[offset] = data;
+}
diff --git a/src/devices/bus/bbc/tube/tube_32016.h b/src/devices/bus/bbc/tube/tube_32016.h
new file mode 100644
index 00000000000..864b8173703
--- /dev/null
+++ b/src/devices/bus/bbc/tube/tube_32016.h
@@ -0,0 +1,71 @@
+// license:BSD-3-Clause
+// copyright-holders:Nigel Barnes
+/**********************************************************************
+
+ Acorn ANC05 32016 2nd processor
+
+ http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/Acorn_ANC05_320162ndproc.html
+
+ Acorn ANC06 Cambridge Co-Processor
+
+ http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/Acorn_ANC06_CamCoPro.html
+
+**********************************************************************/
+
+
+#ifndef MAME_BUS_BBC_TUBE_32016_H
+#define MAME_BUS_BBC_TUBE_32016_H
+
+#include "tube.h"
+#include "cpu/ns32000/ns32000.h"
+#include "machine/ram.h"
+#include "machine/tube.h"
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> bbc_tube_32016_device
+
+class bbc_tube_32016_device :
+ public device_t,
+ public device_bbc_tube_interface
+{
+public:
+ // construction/destruction
+ bbc_tube_32016_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+protected:
+ // device-level overrides
+ virtual void device_start() override;
+ virtual void device_reset() override;
+
+ // optional information overrides
+ virtual void device_add_mconfig(machine_config &config) override;
+ virtual const tiny_rom_entry *device_rom_region() const override;
+ virtual ioport_constructor device_input_ports() const override;
+
+ virtual uint8_t host_r(offs_t offset) override;
+ virtual void host_w(offs_t offset, uint8_t data) override;
+
+private:
+ required_device<ns32016_cpu_device> m_maincpu;
+ required_device<tube_device> m_ula;
+ required_device<ram_device> m_ram;
+ required_memory_region m_rom;
+
+ DECLARE_READ8_MEMBER(read);
+ DECLARE_WRITE8_MEMBER(write);
+
+ void tube_32016_mem(address_map &map);
+
+ bool m_rom_enabled;
+};
+
+
+
+// device type definition
+DECLARE_DEVICE_TYPE(BBC_TUBE_32016, bbc_tube_32016_device)
+
+
+#endif /* MAME_BUS_BBC_TUBE_32016_H */