The Game Machine

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The Game Machine
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Introduction

• Background
• The project is to create a new type of 3D game
  machine architecture on embedded system device.
• We will discuss the plausible design of the new
  hardware platform and how it might be
  implemented.
• Our Job
• Build an emulator to simulate hardware platform.
• Figure out the future work.

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Projected Timeline

• 1st year
• Study and survey based on QEMU platform
• Propose Portable and Stable Architecture
• Basic Emulator Platform (QEMU-mp).
• 2nd year
• Add New Device on Emulator Platform.
• Support Basic Emulator Platform with partial
  devices.
• 3nd year
• Insertion of miscellaneous devices and
  peripherals
• Support I/O Emulation Platform

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About QEMU (1)

• QEMU is a generic and open source machine
  emulator and virtualizer.
• QEMU can run OSes and programs made for one
  machine (e.g. an ARM board) on a different
  machine (e.g. your own PC). By using dynamic
  translation, it achieves very good performances.

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About QEMU (2)

• Dynamic translation
• - Dynamic translators convert code as
  needed.
• - Try to spend most time executing in
  translation cache.
• - Translate basic blocks as needed.
• - Store translated blocks in code cache.

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About QEMU (3)

• Memory management
• QEMU uses the mmap() system call to emulate the
  target MMU.
• QEMU also supports a software MMU.
• QEMU uses an address translation cache to speed
  up the translation.
• QEMU uses a physically indexed translation cache.
• When MMU mappings change, the chaining of the TBs
  is reset.

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Reference

1. Fabrice Bellard, QEMU a Fast and Portable
   Dynamic Translator USENIX Association FREENIX
   Track 2005 USENIX Annual Technical Conference
2. Erik van der Kouwe, Vrije Universiteit
   Amsterdam, Porting the QEMU virtualization
   software to MINIX 3 , 12 August 2009
3. Nathaniel Wesley Filardo, Porting QEMU to Plan
   9 QEMU Internals and Port Strategy, September
   11, 2007
4. http//www.qemu.org/qemu-doc.html
5. http//www.linux-mips.org/wiki/Qemu
6. http//www.h7.dion.ne.jp/qemu-win/
7. http//en.wikipedia.org/wiki/Xen