From 61eba47cfbc63882ad15465908e664c39ea72647 Mon Sep 17 00:00:00 2001
From: yz70s <yz70s@users.noreply.github.com>
Date: Thu, 20 Apr 2017 00:01:22 +0200
Subject: [PATCH] pci-usb.cpp: add placeholder for OHCI device (nw)

---
 src/devices/machine/pci-usb.cpp | 20 ++++++++++++++++++++
 src/devices/machine/pci-usb.h   | 16 ++++++++++++++++
 2 files changed, 36 insertions(+)

diff --git a/src/devices/machine/pci-usb.cpp b/src/devices/machine/pci-usb.cpp
index f2f714e4612..1bcdeb0e72a 100644
--- a/src/devices/machine/pci-usb.cpp
+++ b/src/devices/machine/pci-usb.cpp
@@ -3,9 +3,29 @@
 #include "emu.h"
 #include "pci-usb.h"
 
+const device_type USB_OHCI = device_creator<usb_ohci_device>;
 const device_type USB_UHCI = device_creator<usb_uhci_device>;
 const device_type USB_EHCI = device_creator<usb_ehci_device>;
 
+DEVICE_ADDRESS_MAP_START(map, 32, usb_ohci_device)
+ADDRESS_MAP_END
+
+usb_ohci_device::usb_ohci_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+	: pci_device(mconfig, USB_OHCI, "USB 1.1 OHCI interface", tag, owner, clock, "usb_ohci", __FILE__)
+{
+}
+
+void usb_ohci_device::device_start()
+{
+	pci_device::device_start();
+	add_map(4096, M_MEM, FUNC(usb_ohci_device::map));
+}
+
+void usb_ohci_device::device_reset()
+{
+	pci_device::device_reset();
+}
+
 DEVICE_ADDRESS_MAP_START(map, 32, usb_uhci_device)
 ADDRESS_MAP_END
 
diff --git a/src/devices/machine/pci-usb.h b/src/devices/machine/pci-usb.h
index 49b94200bb8..2fc5b3ef396 100644
--- a/src/devices/machine/pci-usb.h
+++ b/src/devices/machine/pci-usb.h
@@ -5,12 +5,27 @@
 
 #include "pci.h"
 
+#define MCFG_USB_OHCI_ADD(_tag, _main_id, _revision, _subdevice_id) \
+	MCFG_PCI_DEVICE_ADD(_tag, USB_OHCI, _main_id, _revision, 0x0c0310, _subdevice_id)
+
 #define MCFG_USB_UHCI_ADD(_tag, _main_id, _revision, _subdevice_id) \
 	MCFG_PCI_DEVICE_ADD(_tag, USB_UHCI, _main_id, _revision, 0x0c0300, _subdevice_id)
 
 #define MCFG_USB_EHCI_ADD(_tag, _main_id, _revision, _subdevice_id) \
 	MCFG_PCI_DEVICE_ADD(_tag, USB_EHCI, _main_id, _revision, 0x0c0320, _subdevice_id)
 
+class usb_ohci_device : public pci_device {
+public:
+	usb_ohci_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+protected:
+	virtual void device_start() override;
+	virtual void device_reset() override;
+
+private:
+	DECLARE_ADDRESS_MAP(map, 32);
+};
+
 class usb_uhci_device : public pci_device {
 public:
 	usb_uhci_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
@@ -35,6 +50,7 @@ private:
 	DECLARE_ADDRESS_MAP(map, 32);
 };
 
+extern const device_type USB_OHCI;
 extern const device_type USB_UHCI;
 extern const device_type USB_EHCI;