---
layout: page
title: IBM PC Device Configurations
permalink: /devices/pc/
redirect_from:
  - /configs/pc/
---

IBM PC Device Configurations
---

[IBM PC Machines](machine/) are built from a collection of devices, including:

* CPU (e.g., 8088, 80286, 80386)
* RAM
* [ROMs](rom/)
* ChipSets (e.g., 8259, 8253, 8237)
* [Keyboards](keyboard/)
* [Video Adapters](video/)
* Floppy Drive Controllers
* Hard Drive Controllers
* [Control Panels](panel/)

Each of those devices can be configured in multiple ways, and some support external UI controls.

For example, the IBM PC Keyboard component supports different keyboard models (eg, 83-key, 84-key, 101-key),
and each of those models can also be configured to have dedicated buttons for selected key combinations,
or even entire keyboard layouts.

Complete machine configurations are constructed from those devices.  A Machine Configuration is a single XML file
that lists all the device components to be used.  A Machine XML file can choose to configure every device itself,
or it can include pre-configured device XML files, such as those provided above or elsewhere.

Here's an example of [IBM 5150](/devices/pc/machine/5150/mda/64kb/)
[XML](/devices/pc/machine/5150/mda/64kb/machine.xml):

```xml
<machine id="ibm5150" class="pc" border="1" pos="center" background="#FAEBD7">
    <name pos="center">IBM PC (Model 5150) with Monochrome Display</name>
    <computer id="pc-mda-64k" name="IBM PC" resume="1"/>
    <ram id="ramLow" addr="0x00000"/>
    <rom id="romBASIC" addr="0xf6000" size="0x8000" file="/devices/pc/rom/5150/basic/BASIC100.json"/>
    <rom id="romBIOS" addr="0xfe000" size="0x2000" file="/devices/pc/rom/5150/1981-04-24/PCBIOS-REV1.json"/>
    <video ref="/devices/pc/video/ibm/mda/ibm-mda.xml"/>
    <fdc ref="/disks/pc/compiled/samples.xml"/>
    <cpu id="cpu8088" model="8088" autostart="true" pos="left" padleft="8px" padbottom="8px">
        <control type="button" binding="run">Run</control>
        <control type="button" binding="reset">Reset</control>
    </cpu>
    <keyboard ref="/devices/pc/keyboard/us83-buttons-arrows.xml"/>
    <chipset id="chipset" model="5150" sw1="01000001" sw2="11111000"/>
</machine>
```

In this example, all the devices are fully configured within the machine XML file, except for the
[Video](/docs/pcjs/video/) [XML](/devices/pc/video/ibm/mda/ibm-mda.xml),
[Floppy Disk Controller (FDC)](/docs/pcjs/fdc/) [XML](/disks/pc/compiled/samples.xml), and
[Keyboard](/docs/pcjs/keyboard/) [XML](/devices/pc/keyboard/us83-buttons-arrows.xml).