diff --git a/README.md b/README.md
index 3857565cd..ca1126540 100644
--- a/README.md
+++ b/README.md
@@ -5,10 +5,10 @@ Welcome to PCjs, home of [PCx86](/docs/pcx86/), the original IBM PC simulation t
 one of several JavaScript Machines in the [PCjs Project](https://github.com/jeffpar/pcjs), an open-source project that
 includes:
 
-* [PCx86](/docs/pcx86/), an x86-based IBM PC and PC-compatible emulator
-* [PC8080](/modules/pc8080/), an 8080 machine emulator (e.g., [Space Invaders](/devices/pc8080/machine/invaders/), [VT100 Terminal](/devices/pc8080/machine/vt100/))
+* [PCx86](/docs/pcx86/), an x86-based emulator of [IBM PC and PC-compatible Machines](/devices/pcx86/machine/)
+* [PC8080](/modules/pc8080/), an 8080 machine emulator (e.g., [Space Invaders](/devices/pc8080/machine/invaders/) and the [VT100 Terminal](/devices/pc8080/machine/vt100/))
 * [C1Pjs](/docs/c1pjs/), an emulation of the 6502-based [Ohio Scientific Challenger 1P](/devices/c1p/)
-* [PDPjs](/modules/pdp11/), a PDP-11 emulator currently in development (e.g., [PDP-11/20](/devices/pdp11/machine/1120/), [PDP-11/45](/devices/pdp11/machine/1145/), [PDP-11/70](/devices/pdp11/machine/1170/))
+* [PDPjs](/modules/pdp11/), a [PDP-11 Machine](/devices/pdp11/machine/) emulator that supports the [PDP-11/20](/devices/pdp11/machine/1120/), [PDP-11/45](/devices/pdp11/machine/1145/), and [PDP-11/70](/devices/pdp11/machine/1170/)
 
 All PCjs machine simulations are written entirely in [JavaScript](/modules/).  No Flash, Java or other plugins are
 required.  Supported browsers include modern versions of Chrome, Safari, Firefox, Internet Explorer (v9.0 and up), Edge,
diff --git a/docs/pcx86/README.md b/docs/pcx86/README.md
index 9af6ba3a2..d3e5121d1 100644
--- a/docs/pcx86/README.md
+++ b/docs/pcx86/README.md
@@ -13,17 +13,20 @@ machines:
 PCx86 Documentation
 ---
 
-[PCx86](/docs/about/pcx86/) is a full-featured IBM PC, PC XT and PC AT emulator written entirely in JavaScript.
+[PCx86](/docs/about/pcx86/) is a full-featured [IBM PC and PC-compatible](/devices/pcx86/machine/) emulator written
+entirely in JavaScript.  It supports a variety of XT and AT class machines, with processors ranging from the 8088
+through the 80386.  The PCjs website provides a variety of "stock" configurations, featuring classic machines running
+at their original clock speed, or you can create your own, by mixing, matching, and reconfiguring any of the PCx86
+components listed below.
 
 After you've read the Documentation, check out the [Examples](examples/), browse the [Source Code](/modules/pcx86/),
 and experiment!
 
 {% include machine.html id="ibm5150" %}
 
-The [simulation](/devices/pcx86/machine/5150/mda/64kb/) above features an Intel 8088
-running at 4.77Mhz, with 64Kb of RAM and an IBM Monochrome Display Adapter.  To create your
-own simulation, all you need is the PCx86 script and a machine XML file, along with a couple
-of XSL and CSS support files (included in the ZIP file below).
+The [simulation](/devices/pcx86/machine/5150/mda/64kb/) above features an Intel 8088 running at 4.77Mhz,
+with 64Kb of RAM and an IBM Monochrome Display Adapter.  To create your own simulation, all you need is the PCx86
+script and a machine XML file, along with a couple of XSL and CSS support files (included in the ZIP file below).
 
 ### Creating Machine XML Files
 
diff --git a/modules/pdp11/README.md b/modules/pdp11/README.md
index 7e07d0acd..6f944ce99 100644
--- a/modules/pdp11/README.md
+++ b/modules/pdp11/README.md
@@ -9,8 +9,10 @@ PDP-11 Machine Emulation Module (PDPjs)
 
 Overview
 ---
-PDPjs, our [PDP-11 Machine](/devices/pdp11/machine/) emulation module, was written in 2016.  It was adapted from
-the [PDP-11/70 Emulator (v1.4)](http://skn.noip.me/pdp11/pdp11.html) written by Paul Nankervis.
+PDPjs, our [PDP-11 Machine](/devices/pdp11/machine/) emulation module, was added to the PCjs Project in 2016.
+
+It was adapted from the [PDP-11/70 Emulator](http://skn.noip.me/pdp11/pdp11.html) written by Paul Nankervis,
+with permission.
 
 PDPjs is currently comprised of the following PDP-11 components, as listed in [package.json](../../package.json)
 (see the *pdp11Files* property):
@@ -24,6 +26,7 @@ PDPjs is currently comprised of the following PDP-11 components, as listed in [p
 * [defines.js](/modules/pdp11/lib/defines.js)
 * [device.js](/modules/pdp11/lib/device.js)
 * [disk.js](/modules/pdp11/lib/disk.js)
+* [drive.js](/modules/pdp11/lib/drive.js)
 * [keyboard.js](/modules/pdp11/lib/keyboard.js)
 * [memory.js](/modules/pdp11/lib/memory.js)
 * [messages.js](/modules/pdp11/lib/messages.js)