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author Patrick Mackinlay <pmackinlay@hotmail.com>2024-11-21 16:55:10 +0700
committer Patrick Mackinlay <pmackinlay@hotmail.com>2024-11-21 16:55:31 +0700
commit959ed9664e779f2c810b58c3ff67f06e4b8015de (patch)
treeb969ec6bd70f9fb0ee660c63436d0bc7e34e4719 /src/devices/bus
parent25dc6e8aadee32ad0101b448b3878a672123b58c (diff)
tp880v: added Tadpole Technology TP880V VME single-board computer [Plamen Mihaylov]
Diffstat (limited to 'src/devices/bus')
-rw-r--r--src/devices/bus/vme/tp880v.cpp168
-rw-r--r--src/devices/bus/vme/tp880v.h57
-rw-r--r--src/devices/bus/vme/vme_cards.cpp2
3 files changed, 227 insertions, 0 deletions
diff --git a/src/devices/bus/vme/tp880v.cpp b/src/devices/bus/vme/tp880v.cpp
new file mode 100644
index 00000000000..a3a2e12b0f6
--- /dev/null
+++ b/src/devices/bus/vme/tp880v.cpp
@@ -0,0 +1,168 @@
+// license:BSD-3-Clause
+// copyright-holders:Patrick Mackinlay
+
+/*
+ * Tadpole Technology TP880V
+ *
+ * Sources:
+ * - TPROM/88K User Manual, Monitor/Debugger For 88000 Boards, Issue: 1.3, 26 June 1990, Part No. DS-1003
+ *
+ * TODO:
+ * - cio hookup is incomplete, inter-processor interrupts are not working
+ * - dmac
+ * - vme
+ * - leds and switches
+ */
+
+#include "emu.h"
+#include "tp880v.h"
+
+#include "bus/nscsi/hd.h"
+#include "bus/nscsi/tape.h"
+
+#define VERBOSE 0
+#include "logmacro.h"
+
+DEFINE_DEVICE_TYPE(VME_TP880V, vme_tp880v_card_device, "tp880v", "Tadpole Technology TP880V")
+
+vme_tp880v_card_device::vme_tp880v_card_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, VME_TP880V, tag, owner, clock)
+ , device_vme_card_interface(mconfig, *this)
+ , m_cpu(*this, "cpu")
+ , m_mmu(*this, "mmu%u", 0U)
+ , m_ios(*this, "ios")
+ , m_cio(*this, "cio%u", 0U)
+ , m_dma(*this, "dma")
+ , m_rtc(*this, "rtc")
+ , m_scsi(*this, "scsi:7:ncr53c90")
+ , m_duart(*this, "duart")
+ , m_serial(*this, "serial%u", 0U)
+ , m_ram(*this, "ram")
+ , m_ram_68k(nullptr)
+{
+}
+
+ROM_START(tp880v)
+ ROM_REGION16_BE(0x20000, "eprom", 0)
+ ROM_SYSTEM_BIOS(0, "v421", "TP880V Monitor - Revision R4.21")
+ ROMX_LOAD("880-v__v4.2.1.bin", 0x00000, 0x20000, CRC(c5e64026) SHA1(724f54573b1b0c79f20250fdb6434bb2248c5e04), ROM_GROUPWORD | ROM_REVERSE | ROM_BIOS(0)) // D27C1024D-15
+ROM_END
+
+static INPUT_PORTS_START(tp880v)
+INPUT_PORTS_END
+
+const tiny_rom_entry *vme_tp880v_card_device::device_rom_region() const
+{
+ return ROM_NAME(tp880v);
+}
+
+ioport_constructor vme_tp880v_card_device::device_input_ports() const
+{
+ return INPUT_PORTS_NAME(tp880v);
+}
+
+void vme_tp880v_card_device::device_start()
+{
+ m_ram_68k = util::big_endian_cast<u16>(m_ram.target());
+}
+
+void vme_tp880v_card_device::device_reset()
+{
+}
+
+static void scsi_devices(device_slot_interface &device)
+{
+ device.option_add("harddisk", NSCSI_HARDDISK);
+ device.option_add("tape", NSCSI_TAPE);
+ device.option_add("ncr53c90", NCR53C90);
+}
+
+void vme_tp880v_card_device::device_add_mconfig(machine_config &config)
+{
+ MC88100(config, m_cpu, 40_MHz_XTAL / 2);
+ m_cpu->set_addrmap(AS_PROGRAM, &vme_tp880v_card_device::cpu_mem);
+ m_cpu->set_cmmu_code([this](u32 const address) -> mc88200_device & { return *m_mmu[0]; });
+ m_cpu->set_cmmu_data([this](u32 const address) -> mc88200_device & { return *m_mmu[1]; });
+
+ MC88200(config, m_mmu[0], 40_MHz_XTAL / 2, 0x7e).set_mbus(m_cpu, AS_PROGRAM);
+ MC88200(config, m_mmu[1], 40_MHz_XTAL / 2, 0x7f).set_mbus(m_cpu, AS_PROGRAM);
+
+ M68000(config, m_ios, 10'000'000);
+ m_ios->set_addrmap(AS_PROGRAM, &vme_tp880v_card_device::ios_mem);
+
+ Z8036(config, m_cio[0], 4'000'000); // Z0803606VSC
+ m_cio[0]->irq_wr_cb().set_inputline(m_ios, INPUT_LINE_IRQ4); // ?
+ Z8036(config, m_cio[1], 4'000'000); // Z0803606VSC
+ m_cio[0]->irq_wr_cb().set_inputline(m_ios, INPUT_LINE_IRQ1); // ?
+
+ // TODO: MC68440 is function and pin compatible with MC68450/HD63450, but
+ // has only two DMA channels instead of four.
+ HD63450(config, m_dma, 10'000'000); // MC68440FN10
+ m_dma->set_cpu_tag(m_ios);
+ m_dma->irq_callback().set_inputline(m_ios, INPUT_LINE_IRQ3);
+ m_dma->dma_read<0>().set(m_scsi, FUNC(ncr53c90_device::dma_r));
+ m_dma->dma_write<0>().set(m_scsi, FUNC(ncr53c90_device::dma_w));
+
+ M48T02(config, m_rtc, 0); // MK40T02B-25
+
+ NSCSI_BUS(config, "scsi", 0);
+ NSCSI_CONNECTOR(config, "scsi:0", scsi_devices, "harddisk", false);
+ NSCSI_CONNECTOR(config, "scsi:1", scsi_devices, nullptr, false);
+ NSCSI_CONNECTOR(config, "scsi:2", scsi_devices, "tape", false);
+ NSCSI_CONNECTOR(config, "scsi:3", scsi_devices, nullptr, false);
+ NSCSI_CONNECTOR(config, "scsi:4", scsi_devices, nullptr, false);
+ NSCSI_CONNECTOR(config, "scsi:5", scsi_devices, nullptr, false);
+ NSCSI_CONNECTOR(config, "scsi:6", scsi_devices, nullptr, false);
+ NSCSI_CONNECTOR(config, "scsi:7").option_set("ncr53c90", NCR53C90).machine_config(
+ [this](device_t *device)
+ {
+ ncr53c90_device &ncr53c90(downcast<ncr53c90_device &>(*device));
+
+ ncr53c90.set_clock(10'000'000);
+ ncr53c90.irq_handler_cb().set_inputline(m_ios, INPUT_LINE_IRQ2);
+ ncr53c90.drq_handler_cb().set(m_dma, FUNC(hd63450_device::drq0_w));
+ });
+
+ SCN2681(config, m_duart, 3.6864_MHz_XTAL);
+ m_duart->irq_cb().set_inputline(m_ios, INPUT_LINE_IRQ6);
+ m_duart->outport_cb().set([this](int state) { m_cpu->set_input_line(INPUT_LINE_RESET, state); }).bit(5);
+
+ RS232_PORT(config, m_serial[0], default_rs232_devices, "terminal");
+ RS232_PORT(config, m_serial[1], default_rs232_devices, nullptr);
+
+ m_duart->a_tx_cb().set(m_serial[0], FUNC(rs232_port_device::write_txd));
+ m_duart->b_tx_cb().set(m_serial[1], FUNC(rs232_port_device::write_txd));
+
+ m_serial[0]->rxd_handler().set(m_duart, FUNC(scn2681_device::rx_a_w));
+ m_serial[1]->rxd_handler().set(m_duart, FUNC(scn2681_device::rx_b_w));
+}
+
+void vme_tp880v_card_device::cpu_mem(address_map &map)
+{
+ map(0x0000'0000, 0x003f'ffff).ram().share("ram");
+
+ map(0xfff0'0002, 0xfff0'0002).select(0x3f00).lrw8(
+ [this](offs_t offset) { return m_cio[0]->read(offset >> 8); }, "cio0_r",
+ [this](offs_t offset, u8 data) { m_cio[0]->write(offset >> 8, data); }, "cio0_w");
+ map(0xfff0'8002, 0xfff0'8002).select(0x3f00).lrw8(
+ [this](offs_t offset) { return m_cio[1]->read(offset >> 8); }, "cio1_r",
+ [this](offs_t offset, u8 data) { m_cio[1]->write(offset >> 8, data); }, "cio1_w");
+
+ //map(0xfff1'0000, 0xfff1'0000); // vme iack vector?
+}
+
+void vme_tp880v_card_device::ios_mem(address_map &map)
+{
+ map(0x00'0000, 0x01'ffff).rom().region("eprom", 0);
+
+ map(0x10'0000, 0x10'3fff).ram(); // SRAM
+
+ map(0x20'0000, 0x20'001f).rw(m_duart, FUNC(scn2681_device::read), FUNC(scn2681_device::write)).umask16(0x00ff);
+ map(0x24'0000, 0x2f'001f).m(m_scsi, FUNC(ncr53c90_device::map)).umask16(0x00ff);
+ map(0x28'0000, 0x28'00ff).rw(m_dma, FUNC(hd63450_device::read), FUNC(hd63450_device::write));
+ map(0x2c'0000, 0x2c'0fff).rw(m_rtc, FUNC(m48t02_device::read), FUNC(m48t02_device::write)).umask16(0x00ff);
+
+ map(0x80'0000, 0xbf'ffff).lrw16(
+ [this](offs_t offset, u16 mem_mask) { return m_ram_68k[offset]; }, "ram_68k_r",
+ [this](offs_t offset, u16 data, u16 mem_mask) { COMBINE_DATA(&m_ram_68k[offset]); }, "ram_68k_w");
+}
diff --git a/src/devices/bus/vme/tp880v.h b/src/devices/bus/vme/tp880v.h
new file mode 100644
index 00000000000..d2f60273550
--- /dev/null
+++ b/src/devices/bus/vme/tp880v.h
@@ -0,0 +1,57 @@
+// license:BSD-3-Clause
+// copyright-holders:Patrick Mackinlay
+
+#ifndef MAME_BUS_VME_TP880V_H
+#define MAME_BUS_VME_TP880V_H
+
+#pragma once
+
+#include "cpu/m68000/m68000.h"
+#include "cpu/m88000/m88000.h"
+#include "machine/hd63450.h"
+#include "machine/mc68681.h"
+#include "machine/mc88200.h"
+#include "machine/ncr53c90.h"
+#include "machine/timekpr.h"
+#include "machine/z8536.h"
+
+#include "bus/vme/vme.h"
+#include "bus/rs232/rs232.h"
+
+class vme_tp880v_card_device
+ : public device_t
+ , public device_vme_card_interface
+{
+public:
+ vme_tp880v_card_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock);
+
+protected:
+ virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD;
+ virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
+ virtual ioport_constructor device_input_ports() const override ATTR_COLD;
+ virtual void device_start() override ATTR_COLD;
+ virtual void device_reset() override ATTR_COLD;
+
+private:
+ void cpu_mem(address_map &map) ATTR_COLD;
+ void ios_mem(address_map &map) ATTR_COLD;
+
+ required_device<mc88100_device> m_cpu;
+ required_device_array<mc88200_device, 2> m_mmu;
+ required_device<m68000_device> m_ios;
+
+ required_device_array<z8036_device, 2> m_cio;
+ required_device<hd63450_device> m_dma;
+ required_device<m48t02_device> m_rtc;
+ required_device<ncr53c90_device> m_scsi;
+ required_device<scn2681_device> m_duart;
+
+ required_device_array<rs232_port_device, 2> m_serial;
+
+ required_shared_ptr<u32> m_ram;
+ util::endian_cast<u32, u16, util::endianness::big> m_ram_68k;
+};
+
+DECLARE_DEVICE_TYPE(VME_TP880V, vme_tp880v_card_device)
+
+#endif // MAME_BUS_VME_TP880V_H
diff --git a/src/devices/bus/vme/vme_cards.cpp b/src/devices/bus/vme/vme_cards.cpp
index cc6d26b2bae..d2d0245e7a0 100644
--- a/src/devices/bus/vme/vme_cards.cpp
+++ b/src/devices/bus/vme/vme_cards.cpp
@@ -24,6 +24,7 @@
#include "sys68k_cpu30.h"
#include "sys68k_iscsi.h"
#include "sys68k_isio.h"
+#include "tp880v.h"
#include "tp881v.h"
void vme_cards(device_slot_interface &device)
@@ -63,5 +64,6 @@ void vme_cards(device_slot_interface &device)
device.option_add("sys68k_cpu33", VME_SYS68K_CPU33);
device.option_add("sys68k_iscsi1", VME_SYS68K_ISCSI1),
device.option_add("sys68k_isio1", VME_SYS68K_ISIO1),
+ device.option_add("tp880v", VME_TP880V);
device.option_add("tp881v", VME_TP881V);
}