Major content update.

- Reorganized content
- Added addressing modes
- Added reference manual PDFs

Author: markjamesm

astro.config.mjs

@@ -25,17 +25,23 @@ export default defineConfig({
         },
       ],
       sidebar: [
-        {
-          label: "Reference",
+		        {
+          label: "Start Here",
           items: [
             // Each item here is one entry in the navigation menu.
-            { label: "680x0 Series", slug: "reference/68000-series" },
+            { label: "Getting Started", slug: "getting-started" }
+          ],
+        },
+		        {
+          label: "Reference",
+          items: [
+			{ label: "Overview", slug: "reference/overview" },
+			{ label: "Manuals", slug: "reference/manuals" },
           ],
         },
         {
           label: "68000",
           items: [
-            // Each item here is one entry in the navigation menu.
             { label: "Addressing Modes", slug: "68000/addressing-modes" },
           ],
         },

public/pdf/M68000PRM.pdf

@@ -1,19 +1,34 @@
 ---
-title: Motorola 68000 Addressing Modes
-description: Addressing Modes of the Motorola 68000 microprocessor.
+title: Addressing Modes
+description: Addressing Modes of the Motorola 68000 family of microprocessors.
 ---
 
-|**Addressing Mode**|**Format**|**M**|**Xn**|
-|---|---|---|---|
-|Data register |**Dn**|0 0 0|reg|
-|Address register |**An**|0 0 1|reg |
-|Address |**(An)**|0 1 0|reg |
-|Address with Postincrement |**(An)+**|0 1 1|reg|
-|Address with Predecrement |**-(An)**|1 0 0|reg|
-|Address with Displacement |**(d16, An)**|1 0 1|reg |
-|Address with Index |**(d8, An, Xn)**|1 1 0|reg|
-|Program Counter with Displacement |**(d16, PC)**|1 1 1|0 1 0|
-|Program Counter with Index |**(d8, PC, Xn)**|1 1 1|0 1 1|
-|Absolute Short |**(xxx).W**|1 1 1|0 0 0|
-|Absolute Long |**(xxx).L**|1 1 1|0 0 1|
-|Immediate|**#imm**|1 1 1|1 0 0|
+The original Motorola 68000 has 14 addressing modes [^1]. Later models introduced additional addressing modes but are all backwards compatible with the original 68000. 
+
+If the 68000 encounters instructions from 
+
+## Effective Addressing Modes
+
+|**Mode**|**Assembler Syntax**|**EA Mode Field**|**EA Register Field**| **Extension Words**|
+|---|---|---|---|---|
+|Data Register Direct|Dn|0 0 0|Register number|0|
+|Address Register Direct|An|0 0 1|Register number|0|
+|Address Register Indirect|(An)|0 1 0|Register number|0|
+|Address Register Indirect with Postincrement|(An)+|0 1 1|Register number|0|
+|Address Register Indirect with Predecrement|-(An)|1 0 0|Register number|0|
+|Address Register Indirect with Displacement |(d16, An)|1 0 1|Register number|1|
+|Address Register Indirect with Index|(d8, An, Xn)|1 1 0|Register number|1|
+|Program Counter Relative with Displacement |(d16, PC)|1 1 1|0 1 0|1|
+|Program Counter Relative with Index |(d8, PC, Xn)|1 1 1|0 1 1|1|
+|Absolute Short Data|(address).W|1 1 1|0 0 0|1|
+|Absolute Long Data|(address).L|1 1 1|0 0 1|2|
+|Immediate|#(data)|1 1 1|1 0 0|1, 2|
+
+### Special Addressing Modes
+
+- Quick immediate
+- Implied
+
+## References
+
+[^1]: [SYSC3601: Microprocessor Systems, Carleton University](https://www.sce.carleton.ca/courses/sysc-3601/s14/SYSC3601-Slides-09-Motorola%2068000.pdf#page=9)

public/pdf/M68kOpcodes-v2.3.pdf

@@ -0,0 +1,19 @@
+---
+title: Getting Started
+description: A collection of reference manuals for the Motorola 68000 microprocessor family.
+---
+
+The documentation is currently split in two parts:
+
+1. Reference section
+2. Processor-specific sections
+
+The reference section is designed for content applicable across the entire 68000 series, while the processor-specific sections are designed to provide information specific to a given model. 
+
+## Contributing
+
+Contributions are always welcome, and they can be made by [forking the Git repository](https://github.com/markjamesm/m68k-reference) and submitting a pull request with your changes. 
+
+Prior to starting work, it is a good idea to check the project's [open issues](https://github.com/markjamesm/m68k-reference/issues) to see if there are any issues that need working on, and open an issue prior to starting any major work to ensure that contributors can coordinate and agree on any proposed submissions.
+
+Lastly, please ensure that the appropriate sources are cited within the documentation. 

public/pdf/MC68000UM.pdf

@@ -1,38 +1,43 @@
 ---
 title: M68k Reference
-description: A collaborative, centralized repository of documentation relating to the Motorola 680x0 family of microprocessors.
+description: A collaborative, centralized repository of documentation for the Motorola 68000 series of microprocessors.
 template: splash # Remove or comment out this line to display the site sidebar on this page.
 hero:
-  tagline: A collaborative, centralized repository of documentation relating to the Motorola 680x0 family of microprocessors.
+  tagline: A collaborative, centralized repository of documentation for the Motorola 68000 series of microprocessors.
   image:
     file: ../../assets/gray-logo.svg
   actions:
     - text: Browse documentation
-      link: /reference/68000-series
+      link: /reference/overview
       icon: right-arrow
     - text: Contribute
       link: https://github.com/markjamesm/m68k-reference
       icon: external
       variant: minimal
 ---
 
-import { Aside, Card, CardGrid } from '@astrojs/starlight/components';
+import { Aside, LinkCard, CardGrid } from '@astrojs/starlight/components';
 
 <Aside>Note: The project is currently in a pre-alpha state and is undergoing active development.</Aside>
 
 ## Quick Reference
 
 <CardGrid>
-	<Card title="680x0 Series" icon="open-book">
-		The Motorola 680x0 series (also known as the 68000 series) is a series of big-endian complex instruction set computer (CISC) microprocessors first introduced in 1979 with the launch of the Motorola 68000. 
-		
-		[Learn more](/reference/68000-series)
-	</Card>
-	<Card title="Motorola 68000 Addressing Modes" icon="document">
-		Addressing Modes of the Motorola 68000 microprocessor.
-
-		[Read more](/68000/addressing-modes)
-	</Card>
+	<LinkCard
+  		title="Getting Started"
+  		href="/getting-started"
+  		description="Learn how the documentation is structured and how you can make contributions."
+	/>
+	<LinkCard
+  		title="Overview"
+  		href="/reference/overview"
+  		description="A technical overview of the Motorola 68000 microprocessor family."
+	/>
+	<LinkCard
+  		title="Reference Manuals"
+  		href="/reference/manuals"
+  		description="Consult the list of available reference manuals, in PDF format."
+	/>
 </CardGrid>
 
 *This work is licensed under a