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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<HTML
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><HEAD
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><TITLE
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>Features</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
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REL="HOME"
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TITLE="Bochs User Manual"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="Introduction to Bochs"
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HREF="introduction.html"><LINK
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REL="PREVIOUS"
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TITLE="Third Party Software Licensing and Temporary Files"
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HREF="thirdparty.html"><LINK
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REL="NEXT"
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TITLE="Supported Platforms"
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HREF="supported-platforms.html"></HEAD
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><BODY
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CLASS="SECTION"
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TEXT="#000000"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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SUMMARY="Header navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>Bochs User Manual</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="thirdparty.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>Chapter 1. Introduction to Bochs</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="supported-platforms.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECTION"
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><H1
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CLASS="SECTION"
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><A
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NAME="FEATURES"
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>1.7. Features</A
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></H1
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><P
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>The following table shows the features of Bochs and which platforms they
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currently work with.</P
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><DIV
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CLASS="TABLE"
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><A
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NAME="AEN83"
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></A
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><P
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><B
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>Table 1-1. Bochs Features</B
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></P
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><TABLE
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BORDER="1"
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RULES="all"
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CLASS="CALSTABLE"
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><COL><COL><COL><THEAD
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><TR
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><TH
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>Feature</TH
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><TH
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>Supported?</TH
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><TH
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>Description</TH
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></TR
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></THEAD
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><TBODY
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><TR
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><TD
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>configure script</TD
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><TD
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>Yes</TD
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><TD
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>Bochs uses GNU autoconf to configure Makefiles and headers.
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Autoconf helps Bochs to compile on a wide variety of platforms.
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</TD
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></TR
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><TR
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><TD
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>386,486,Pentium Emulation</TD
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><TD
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>Yes</TD
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><TD
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>Bochs can be configured to emulate one of several families of Intel hardware. Some Pentium features are unsupported, such as MTRR or SMM (System Management Mode).</TD
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></TR
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><TR
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><TD
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>P6 and later CPU Emulation</TD
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><TD
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>Yes</TD
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><TD
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>Bochs can be configured to emulate any P6 family processor including optional MMX and SSE instructions.
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</TD
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></TR
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><TR
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><TD
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>Pentium 4 Emulation</TD
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><TD
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>Incomplete</TD
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><TD
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>A few Pentium 4 features are incomplete, such as an on-chip APIC extensions (XAPIC) for SMP simulation.
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</TD
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></TR
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><TR
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><TD
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>x86-64 Extensions Emulation</TD
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><TD
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>Yes</TD
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><TD
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>Bochs can be configured to emulate x86-64 with all Intel (CMPXCHG16B instruction) or AMD (RDTSCP instruction) extensions.</TD
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></TR
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><TR
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><TD
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>Command Line Debugger</TD
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><TD
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>Yes</TD
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><TD
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>Powerful command line debugger (optional) that lets you stop
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execution and examine registers and memory, set breakpoints, etc. Unfortunatelly
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the debugger still lacks x86-64 support and almost unusable for debugging
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x86-64 workloads.
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</TD
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></TR
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><TR
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><TD
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>Floating Point</TD
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><TD
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>Yes</TD
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><TD
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>Uses software floating point engine based on <A
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HREF="http://www.jhauser.us/arithmetic/SoftFloat.html"
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TARGET="_top"
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>SoftFloat floating point emulation library</A
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>.
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</TD
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></TR
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><TR
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><TD
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>Enhanced BIOS</TD
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><TD
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>Yes</TD
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><TD
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>Implements ElTorito, EDD v3.0, basic APM feature, PCIBIOS features
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and the PCI interrupt routing table. The latest version of the Bochs BIOS
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has a 32-bit init for ACPI, SMM and SMP.
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</TD
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></TR
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><TR
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><TD
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>VGA</TD
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><TD
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>Yes</TD
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><TD
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>VGA color graphics emulation in a window.
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</TD
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></TR
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><TR
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><TD
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>VBE (VESA) Support</TD
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><TD
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>Yes</TD
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><TD
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>Currently resolutions up to 1024x768x32bpp are supported.
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You must compile Bochs with VBE enabled and use the LGPL'd VGABIOS.
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For more information see <A
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HREF="vesa-notes.html"
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>Section 8.16</A
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>.
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</TD
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></TR
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><TR
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><TD
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>Cirrus Logic video card</TD
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><TD
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>Yes</TD
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><TD
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>Cirrus Logic CL-GD5430 ISA or CL-GD5446 PCI video card support.
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For more information see <A
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HREF="cirrus-notes.html"
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>Section 8.17</A
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>.</TD
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></TR
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><TR
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><TD
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>Floppy disk</TD
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><TD
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>Yes</TD
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><TD
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>Supports floppy disk images on all platforms: 2.88M 3.5", 1.44M 3.5", 1.2M 5.25",
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720K 3.5" and 360K 5.25". On Unix and Windows 9x/NT/2000/XP, Bochs can access the
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physical floppy drive.
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</TD
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></TR
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><TR
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><TD
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>Multiple ATA channels</TD
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><TD
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>Yes</TD
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><TD
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>Emulates up to 4 ATA channels. Up to 8 ATA/ATAPI emulated devices can be attached,
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two per ATA channel.
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So you can have eight hard disks or seven hard disks and a CD-ROM or four hard
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disks and four CD-ROMs, or one hard disk and seven CD-ROMs, etc...
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</TD
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></TR
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><TR
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><TD
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>Hard disk</TD
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><TD
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>Yes</TD
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><TD
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>Emulates ATA-6/IDE hard drives via image files. Physical
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hard disk access is supported on some architecture, but NOT recommended, primarily for safety reasons.
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Hard disk up to 127GB are supported, on any platform that support large files access.
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</TD
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></TR
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><TR
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><TD
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>CD-ROM</TD
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><TD
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>Yes</TD
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><TD
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>Emulates ATAPI-4/IDE CD-ROM. The CD-ROMs can read from an ISO disk image
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on any platform. On Windows (9x/ME/NT/2000/XP), Linux, SunOS, FreeBSD,
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NetBSD, OpenBSD, Amiga/MorphOS, MacOSX and BeOS, Bochs can read from the
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physical CD-ROM drive. Starting with version 1.4, Bochs is even able to boot from
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a bootable CD or bootable ISO image.
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</TD
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></TR
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><TR
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><TD
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>Keyboard</TD
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><TD
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>Yes</TD
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><TD
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>Emulates a PS/2 keyboard with North American key mappings. Optional keyboard layout
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remapping files are provided to support localized keyboard in X11 (German, French, Italian, Spanish,
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Danish, Swedish, Russian).
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</TD
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></TR
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><TR
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><TD
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>Mouse</TD
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><TD
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>Yes</TD
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><TD
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>Emulates a serial, PS/2 or USB mouse with 3 buttons + optional mouse
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wheel support.
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</TD
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></TR
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><TR
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><TD
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>Sound Blaster</TD
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><TD
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>Yes</TD
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><TD
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>Emulates a Sound Blaster 16 card (ISA, no plug&play). On Windows, Linux, FreeBSD, MacOS 9 and
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MacOSX, the output can be sent to the host computer's sound system, see
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<A
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HREF="sb16-emulation.html"
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>Section 4.3</A
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> for details.
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</TD
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></TR
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><TR
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><TD
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>Network card</TD
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><TD
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>Yes</TD
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><TD
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>Emulates an NE2000 compatible network card. On Windows NT/2000,
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Linux, FreeBSD, and NetBSD, Bochs will forward packets to and from the
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operating system so that the guest OS can talk on the physical network.
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Unfortunately, on some platforms the guest OS can talk to any machine on
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the network BUT NOT the host machine. On Windows and on systems that
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allow the TAP or TUN/TAP interface, there is no such limitation. Often
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the host machine may be configured so the guest OS has access to the
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internet. On MacOSX, you may download the TUN driver from:
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<A
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HREF="http://chrisp.de/en/projects/tunnel.html"
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TARGET="_top"
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>http://chrisp.de/en/projects/tunnel.html</A
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>
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</TD
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></TR
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><TR
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><TD
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>Parallel Port</TD
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><TD
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>Yes</TD
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><TD
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>Parallel port emulation was added by Volker Ruppert for Bochs 1.3.
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Data that is sent to the parallel port by the guest OS can be saved into a
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file or sent directly into the parallel port device (Unix only).
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</TD
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></TR
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><TR
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><TD
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>Serial Port</TD
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><TD
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>Yes</TD
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><TD
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>The serial port (single 16550A UART emulation) is usable, on GNU/Linux,
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NetBSD, OpenBSD, FreeBSD and MacOSX as host and guest. On other OSes the
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emulation is present, but the connection to hard- or software of the host is
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not implemented yet. Up to 4 ports are available.
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</TD
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></TR
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><TR
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><TD
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>Gameport</TD
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><TD
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>Yes</TD
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><TD
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>Emulates a standard PC gameport. The connection to a real joystick is
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currently supported on Linux and win32 only.
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</TD
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></TR
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><TR
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><TD
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>PCI</TD
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><TD
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>Yes</TD
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><TD
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>Emulates most of the i440FX PCI chipset. The Host-to-PCI bridge
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(PMC/DBX), the PCI-to-ISA bridge and the PCI IDE controller (PIIX3) are
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available. For PCI cards there are 5 PCI slots supported.
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</TD
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></TR
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><TR
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><TD
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>USB</TD
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><TD
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>incomplete</TD
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><TD
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>The USB root hub and the devices 'mouse', 'tablet', 'keypad' and
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'disk' are available. Plugging in and removing devices at runtime is
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possible, but still experimental. Access to real hardware is not
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implemented yet.
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</TD
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></TR
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><TR
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><TD
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>Plugins</TD
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><TD
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>Yes</TD
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><TD
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>Plugins are supported on Linux, MacOS X, Solaris, and Cygwin.</TD
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></TR
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><TR
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><TD
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>16/32 bit addressing</TD
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><TD
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>Yes</TD
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><TD
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>16 or 32 bit operand sizes, stack size, and addressing</TD
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></TR
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><TR
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><TD
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>v8086/paging</TD
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><TD
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>Yes</TD
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><TD
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>Virtual-8086 mode including optional v8086 mode extensions (VME) and paging</TD
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></TR
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><TR
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><TD
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>PIC</TD
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><TD
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>Yes</TD
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><TD
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>Master and slave programmable interrupt controller.
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</TD
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></TR
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><TR
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><TD
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>CMOS functions</TD
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><TD
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>Yes</TD
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><TD
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>CMOS functions</TD
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></TR
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><TR
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><TD
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>Dynamic Translation/Virtualization</TD
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><TD
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>No</TD
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><TD
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>Because Bochs is designed to be portable, it does not attempt
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to do any dynamic code translation or virtualization. See
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<A
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HREF="introduction.html#WHATISBOCHS"
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>Section 1.1</A
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> for details.
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</TD
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></TR
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><TR
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><TD
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>Simulate a Multiprocessor</TD
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><TD
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>Yes</TD
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><TD
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>Bochs can be configured to simulate up to 8 processors. This
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feature is still experimental, but it can boot Linux 2.2 kernels with SMP
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support. Please note that this does NOT mean that Bochs can run
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faster on a physical SMP machine.
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</TD
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></TR
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><TR
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><TD
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>Take advantage of your SMP box</TD
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><TD
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>No</TD
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><TD
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>At present, Bochs does not use threads or parallel processing, so it
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will not run any faster on multiprocessor hardware.
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</TD
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></TR
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><TR
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><TD
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>Copy and Paste</TD
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><TD
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>Yes</TD
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><TD
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>Depending on the host platform, the text-mode screen text can be
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exported to the clipboard. Text in the clipboard can also be pasted, through
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Bochs, to the guest OS, as simulated keystrokes.
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</TD
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></TR
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></TBODY
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></TABLE
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></DIV
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></DIV
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WIDTH="100%"><TABLE
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SUMMARY="Footer navigation table"
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>Prev</A
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>Home</A
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VALIGN="top"
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HREF="supported-platforms.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>Third Party Software Licensing and Temporary Files</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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>Up</A
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>Supported Platforms</TD
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></TR
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>
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