Add dump of Iomega Zip 100MB IDE drive [Guru]

scripts/src/bus.lua

@@ -512,6 +512,8 @@ if (BUSES["ATA"]~=null) then
 		MAME_DIR .. "src/devices/bus/ata/gdrom.h",
 		MAME_DIR .. "src/devices/bus/ata/px320a.cpp",
 		MAME_DIR .. "src/devices/bus/ata/px320a.h",
+		MAME_DIR .. "src/devices/bus/ata/zip100.cpp",
+		MAME_DIR .. "src/devices/bus/ata/zip100.h",
 	}
 end
 

src/devices/bus/ata/atadev.cpp

@@ -13,6 +13,7 @@
 #include "cp2024.h"
 #include "hdd.h"
 #include "px320a.h"
+#include "zip100.h"
 
 //-------------------------------------------------
 //  device_ata_interface - constructor
@@ -74,4 +75,5 @@ void ata_devices(device_slot_interface &device)
 	device.option_add("px320a", PX320A);
 	device.option_add("cf", ATA_CF);
 	device.option_add("cp2024", CP2024);
+	device.option_add("zip100", ZIP100_IDE);
 }

src/devices/bus/ata/zip100.cpp

@@ -0,0 +1,100 @@
+// license:BSD-3-Clause
+// copyright-holders:AJR
+/*******************************************************************************
+
+    Skeleton device for Iomega Zip 100MB IDE drive.
+
+    Main IC is a 100-pin QFP system-on-a-chip bearing the manufacturer logo.
+    The SoC seems to be named "Rucify", which appears both on its silkscreened
+    label and in its firmware EPROM.
+
+*******************************************************************************/
+
+#include "emu.h"
+#include "zip100.h"
+#include "cpu/mcs51/mcs51.h"
+
+DEFINE_DEVICE_TYPE(ZIP100_IDE, zip100_ide_device, "zip100_ide", "Iomega Zip 100MB IDE Drive")
+
+zip100_ide_device::zip100_ide_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+	: device_t(mconfig, ZIP100_IDE, tag, owner, clock)
+	, device_ata_interface(mconfig, *this)
+{
+}
+
+void zip100_ide_device::device_start()
+{
+}
+
+
+u16 zip100_ide_device::read_dma()
+{
+	return 0;
+}
+
+u16 zip100_ide_device::read_cs0(offs_t offset, u16 mem_mask)
+{
+	return 0;
+}
+
+u16 zip100_ide_device::read_cs1(offs_t offset, u16 mem_mask)
+{
+	return 0;
+}
+
+void zip100_ide_device::write_dma(u16 data)
+{
+}
+
+void zip100_ide_device::write_cs0(offs_t offset, u16 data, u16 mem_mask)
+{
+}
+
+void zip100_ide_device::write_cs1(offs_t offset, u16 data, u16 mem_mask)
+{
+}
+
+void zip100_ide_device::write_dmack(int state)
+{
+}
+
+void zip100_ide_device::write_csel(int state)
+{
+}
+
+void zip100_ide_device::write_dasp(int state)
+{
+}
+
+void zip100_ide_device::write_pdiag(int state)
+{
+}
+
+
+void zip100_ide_device::mem_map(address_map &map)
+{
+	map(0x0000, 0xffff).rom().region("eprom", 0);
+}
+
+void zip100_ide_device::ext_map(address_map &map)
+{
+	// TODO
+}
+
+void zip100_ide_device::device_add_mconfig(machine_config &config)
+{
+	i80c32_device &mcu(I80C32(config, "mcu", 12'000'000)); // custom SoC; clock unknown
+	mcu.set_addrmap(AS_PROGRAM, &zip100_ide_device::mem_map);
+	mcu.set_addrmap(AS_IO, &zip100_ide_device::ext_map);
+}
+
+ROM_START(zip100_ide)
+	ROM_REGION(0x10000, "eprom", 0)
+	// "IOMEGA  ZIP 100         14.A09/04/98"
+	ROM_LOAD("nm27c520m.u1", 0x00000, 0x10000, CRC(67a04459) SHA1(b8df2a733838db5116982a7295484b77b272287c)) // 20-pin address-latched device
+ROM_END
+
+const tiny_rom_entry *zip100_ide_device::device_rom_region() const
+{
+	return ROM_NAME(zip100_ide);
+}

src/devices/bus/ata/zip100.h

@@ -0,0 +1,41 @@
+// license:BSD-3-Clause
+// copyright-holders:AJR
+
+#ifndef MAME_BUS_ATA_ZIP100_H
+#define MAME_BUS_ATA_ZIP100_H
+
+#pragma once
+
+#include "atadev.h"
+
+class zip100_ide_device : public device_t, public device_ata_interface
+{
+public:
+	zip100_ide_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_start() override;
+	virtual void device_add_mconfig(machine_config &config) override;
+	virtual const tiny_rom_entry *device_rom_region() const override;
+
+	virtual u16 read_dma() override;
+	virtual u16 read_cs0(offs_t offset, u16 mem_mask = 0xffff) override;
+	virtual u16 read_cs1(offs_t offset, u16 mem_mask = 0xffff) override;
+	virtual void write_dma(u16 data) override;
+	virtual void write_cs0(offs_t offset, u16 data, u16 mem_mask = 0xffff) override;
+	virtual void write_cs1(offs_t offset, u16 data, u16 mem_mask = 0xffff) override;
+	virtual void write_dmack(int state) override;
+	virtual void write_csel(int state) override;
+	virtual void write_dasp(int state) override;
+	virtual void write_pdiag(int state) override;
+
+private:
+	void mem_map(address_map &map);
+	void ext_map(address_map &map);
+};
+
+DECLARE_DEVICE_TYPE(ZIP100_IDE, zip100_ide_device)
+
+#endif // MAME_BUS_ATA_ZIP100_H