From 24178121f0b96f55df30e14c58d7182795e87b22 Mon Sep 17 00:00:00 2001
From: icex2 <djh.icex2@gmail.com>
Date: Thu, 17 Dec 2020 00:01:45 +0100
Subject: [PATCH] doc: Add iidxio-bio2 documentation

---
 doc/iidxhook/iidxio-bio2.md | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 doc/iidxhook/iidxio-bio2.md

diff --git a/doc/iidxhook/iidxio-bio2.md b/doc/iidxhook/iidxio-bio2.md
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+++ b/doc/iidxhook/iidxio-bio2.md
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+# IIDXIO API implementation with BIO2 driver
+This implementation of BT5's iidxio API allows you to use native BIO2 hardware with anything that
+supports BT5's iidxio API, e.g. all iidxhooks of BT5. Thus, you can play your favorite old IIDX
+games with the latest generation of hardware.5.
+
+## Setup
+* Have `iidxio-bio2.dll` in the same folder as your `iidxhookX.dll`
+* Rename `iidxio-bio2.dll` to `iidxio.dll`
+* Ensure that your `gamestart.bat` actually injects the appropriate iidxhook dll, for example:
+```bat
+inject iidxhook3.dll bm2dx.exe ...*
+```
+or
+```bat
+launcher -K iidxhook4.dll bm2dx.dll ...*
+```
+* This assumes that the BIO2 is already flashed to the correct firmware. The firmware perists once
+flashed and does not need to be re-flashed after a power cycle.
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