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author AJR <ajrhacker@users.noreply.github.com>2019-03-22 21:57:11 -0400
committer AJR <ajrhacker@users.noreply.github.com>2019-03-22 21:57:13 -0400
commit6b57e483d6d4974d4943806f9246d09e114b443e (patch)
tree4d92dcba50fec0410d2f8311e0c2d4a88db8ebce
parent517858416d578350f5b9ac1316f3fbfe624b77a8 (diff)
Add skeleton ISA device for Novell Disk Coprocessor Board [modem7, minuszerodegrees.net]
-rw-r--r--scripts/src/bus.lua2
-rw-r--r--src/devices/bus/isa/dcb.cpp70
-rw-r--r--src/devices/bus/isa/dcb.h43
-rw-r--r--src/devices/bus/isa/isa_cards.cpp2
4 files changed, 117 insertions, 0 deletions
diff --git a/scripts/src/bus.lua b/scripts/src/bus.lua
index 45e592ff234..d846e8b6abd 100644
--- a/scripts/src/bus.lua
+++ b/scripts/src/bus.lua
@@ -1316,6 +1316,8 @@ if (BUSES["ISA"]~=null) then
MAME_DIR .. "src/devices/bus/isa/np600.h",
MAME_DIR .. "src/devices/bus/isa/bt54x.cpp",
MAME_DIR .. "src/devices/bus/isa/bt54x.h",
+ MAME_DIR .. "src/devices/bus/isa/dcb.cpp",
+ MAME_DIR .. "src/devices/bus/isa/dcb.h",
}
end
diff --git a/src/devices/bus/isa/dcb.cpp b/src/devices/bus/isa/dcb.cpp
new file mode 100644
index 00000000000..78ff81a6839
--- /dev/null
+++ b/src/devices/bus/isa/dcb.cpp
@@ -0,0 +1,70 @@
+// license:BSD-3-Clause
+// copyright-holders:AJR
+/***************************************************************************
+
+ Novell Disk Coprocessor Board (DCB)
+
+ This special SCSI host adapter, later acquired by ADIC, was designed
+ for use with Novell NetWare.
+
+***************************************************************************/
+
+#include "emu.h"
+#include "dcb.h"
+
+DEFINE_DEVICE_TYPE(NOVELL_DCB, novell_dcb_device, "novell_dcb", "Novell Disk Coprocessor Board (#738-133-001)")
+
+novell_dcb_device::novell_dcb_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, NOVELL_DCB, tag, owner, clock)
+ , device_isa16_card_interface(mconfig, *this)
+ , m_localcpu(*this, "localcpu")
+ , m_eeprom(*this, "eeprom")
+{
+}
+
+void novell_dcb_device::device_start()
+{
+}
+
+void novell_dcb_device::eeprom_w(u8 data)
+{
+ m_eeprom->cs_write(BIT(data, 5));
+ m_eeprom->clk_write(BIT(data, 6));
+ m_eeprom->di_write(BIT(data, 7));
+}
+
+u8 novell_dcb_device::misc_r()
+{
+ return m_eeprom->do_read() << 7;
+}
+
+void novell_dcb_device::mem_map(address_map &map)
+{
+ map(0x00000, 0x03fff).ram();
+ map(0xfe000, 0xfffff).rom().region("localcpu", 0);
+}
+
+void novell_dcb_device::io_map(address_map &map)
+{
+ map(0x0100, 0x0100).w(FUNC(novell_dcb_device::eeprom_w));
+ map(0x0180, 0x0180).r(FUNC(novell_dcb_device::misc_r));
+}
+
+void novell_dcb_device::device_add_mconfig(machine_config &config)
+{
+ I80188(config, m_localcpu, 16_MHz_XTAL);
+ m_localcpu->set_addrmap(AS_PROGRAM, &novell_dcb_device::mem_map);
+ m_localcpu->set_addrmap(AS_IO, &novell_dcb_device::io_map);
+
+ EEPROM_93C06_16BIT(config, m_eeprom); // NMC9306
+}
+
+ROM_START(novell_dcb)
+ ROM_REGION(0x2000, "localcpu", 0)
+ ROM_LOAD("817-186-001_rev_e.bin", 0x0000, 0x2000, CRC(2e2037f4) SHA1(a13c0aab46084a0805256f1d2b8b8beaccc9e253))
+ROM_END
+
+const tiny_rom_entry *novell_dcb_device::device_rom_region() const
+{
+ return ROM_NAME(novell_dcb);
+}
diff --git a/src/devices/bus/isa/dcb.h b/src/devices/bus/isa/dcb.h
new file mode 100644
index 00000000000..fbca0303978
--- /dev/null
+++ b/src/devices/bus/isa/dcb.h
@@ -0,0 +1,43 @@
+// license:BSD-3-Clause
+// copyright-holders:AJR
+/***************************************************************************
+
+ Novell Disk Coprocessor Board (DCB)
+
+***************************************************************************/
+
+#ifndef MAME_BUS_ISA_DCB_H
+#define MAME_BUS_ISA_DCB_H
+
+#pragma once
+
+#include "isa.h"
+#include "cpu/i86/i186.h"
+#include "machine/eepromser.h"
+
+class novell_dcb_device : public device_t, public device_isa16_card_interface
+{
+public:
+ novell_dcb_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+ static constexpr feature_type unemulated_features() { return feature::DISK; }
+
+protected:
+ virtual void device_add_mconfig(machine_config &config) override;
+ virtual const tiny_rom_entry *device_rom_region() const override;
+ virtual void device_start() override;
+
+private:
+ void eeprom_w(u8 data);
+ u8 misc_r();
+
+ void mem_map(address_map &map);
+ void io_map(address_map &map);
+
+ required_device<i80188_cpu_device> m_localcpu;
+ required_device<eeprom_serial_93cxx_device> m_eeprom;
+};
+
+DECLARE_DEVICE_TYPE(NOVELL_DCB, novell_dcb_device)
+
+#endif // MAME_BUS_ISA_DCB_H
diff --git a/src/devices/bus/isa/isa_cards.cpp b/src/devices/bus/isa/isa_cards.cpp
index 77dc3513e15..97d676cd3e7 100644
--- a/src/devices/bus/isa/isa_cards.cpp
+++ b/src/devices/bus/isa/isa_cards.cpp
@@ -40,6 +40,7 @@
#include "lbaenhancer.h"
#include "cl_sh260.h"
#include "bt54x.h"
+#include "dcb.h"
// sound
#include "adlib.h"
@@ -183,4 +184,5 @@ void pc_isa16_cards(device_slot_interface &device)
device.option_add("ev346", EV346);
device.option_add("jc1310", JC1310);
device.option_add("bt545s", BT545S);
+ device.option_add("dcb", NOVELL_DCB);
}