Add ACSI2STM page with photo, list as uninstalled extension

eleventy.config.js

@@ -42,6 +42,7 @@ module.exports = function (eleventyConfig) {
   eleventyConfig.addPassthroughCopy("retro/gotek/*.jpg");
   eleventyConfig.addPassthroughCopy("retro/eiffel/*.jpg");
   eleventyConfig.addPassthroughCopy("retro/stpsu/*.jpg");
+  eleventyConfig.addPassthroughCopy("retro/acsi2stm/*.jpg");
 
   // Root-level shared assets
   eleventyConfig.addPassthroughCopy({ "shared/base.css": "shared-base.css" });

retro/acsi2stm/index.njk

@@ -0,0 +1,37 @@
+---
+title: "ACSI2STM: Atari ST Hard Drive Emulator"
+section: "retro"
+tags: "retro"
+description: "An ACSI to SD card hard drive emulator for the Atari ST based on an STM32 microcontroller, bought but not yet in use."
+layout: base.njk
+parent: "/retro/"
+---
+<h1>ACSI2STM: Atari ST Hard Drive Emulator</h1>
+<div class="detail-content">
+
+<p>I bought an ACSI2STM adapter but haven't put it into a machine yet. It's a hard drive emulator for the Atari ST built around an inexpensive STM32 microcontroller and an SD card, an open-source project by retro16.</p>
+
+<h2>What it does</h2>
+<p>ACSI2STM connects to the ACSI (DB19) port at the back of the Atari ST and emulates a hard drive. It can work in three ways:</p>
+<ul>
+<li><strong>Mount SD cards</strong>, standard SD/SDHC/SDXC cards (FAT16/FAT32/ExFAT) appear on the Atari.</li>
+<li><strong>Expose raw SD cards</strong> as ACSI hard disks connected to the Atari.</li>
+<li><strong>Expose disk image files</strong> as hard disks connected to the Atari.</li>
+</ul>
+<p>It also provides an UltraSatan-compatible real-time clock if you add a simple 3V lithium battery such as a CR2032.</p>
+
+<h2>Hardware</h2>
+<p>The hardware is a custom PCB that can be ordered preassembled directly from JLCPCB. The board attaches straight to the DB19 port at the back of the ST and has three microSD card slots, with the firmware supporting up to five SD card readers. It's designed to be easy to build, extremely cheap, reliable and safe for the vintage machine. The project is mature and considered finished, with both software and hardware complete. It can even work on STs with broken DMA chips using the PIO firmware.</p>
+
+<h2>My Setup</h2>
+<p>I bought an ACSI2STM adapter, but it isn't in use anywhere yet, so it sits among my other uninstalled extensions. The <a href="/retro/ultrasatan/">UltraSatan</a> currently provides the ACSI hard-disk storage on the "Low" machine, so the ACSI2STM would be an alternative or a spare for another machine.</p>
+
+<h2>Gallery</h2>
+<img src="acsi2stm.jpg" alt="The ACSI2STM adapter" width="640" height="640">
+<p class="caption">The ACSI2STM adapter, not yet installed.</p>
+
+<h2>Sources</h2>
+<ul>
+<li><a href="https://github.com/retro16/acsi2stm" target="_blank">ACSI2STM - GitHub (project page)</a></li>
+</ul>
+</div>

retro/atari-mega-st-fleet/index.njk

@@ -25,6 +25,7 @@ parent: "/retro/"
 <li><strong>A second <a href="/retro/gotek/">Gotek floppy emulator</a></strong>, bought alongside the one fitted to the "Low" machine, still unbuilt and ready for another machine or as a spare.</li>
 <li><strong>An <a href="/retro/eiffel-pico/">Eiffel Pico USB adapter</a></strong>, bought and configured but not yet installed, so I haven't decided which machine it will go into.</li>
 <li><strong>A new <a href="/retro/sidecartridge/">SidecarTridge Multi-device</a> Revision 3</strong>, bought as an upgrade over the Revision 0 in use on the "Low" machine, still uninstalled until I decide where to put it.</li>
+<li><strong>An <a href="/retro/acsi2stm/">ACSI2STM</a> adapter</strong>, bought but not yet in use anywhere, an alternative ACSI hard-disk emulator to the UltraSatan.</li>
 </ul>
 
 <p class="note">Fun fact: two of the "problem" machines turned out to have nothing wrong with the boards at all, a badly soldered CPU socket and a leftover blitter patch bridge were the actual culprits. Moral of the story: check your solder joints twice before blaming the silicon.</p>

retro/index.njk

@@ -49,6 +49,9 @@ sections:
       - title: "🔌 STPSU"
         summary: "Replacing the aging Mega ST 4 'High' power supply with a modern STPSU for clean, stable power, especially for the ET4000."
         href: "/retro/stpsu/"
+      - title: "💽 ACSI2STM"
+        summary: "An open-source ACSI to SD card hard drive emulator for the Atari ST. Bought, not yet in use."
+        href: "/retro/acsi2stm/"
   - heading: "Amiga Corner"
     cards:
       - title: "⚔️ Vampire, A600GS or MiSTer"