From aa49a3da4f881d8e1b1a96e1645a957a1bd09078 Mon Sep 17 00:00:00 2001
From: UzixLS <uzix.ls@gmail.com>
Date: Tue, 20 Oct 2020 21:21:00 +0300
Subject: [PATCH] pcb: add errata for rev.A

---
 README.md            | 1 +
 pcb/rev.A/ERRATA.txt | 3 +++
 2 files changed, 4 insertions(+)
 create mode 100644 pcb/rev.A/ERRATA.txt

diff --git a/README.md b/README.md
index 7893534..b2466e2 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@ Sound card for ZX Spectrum edge connector (ZX-BUS). Contains MOS SID, YM2149 (AY
 
 ### Current status
 Work in progress, both pcb and firmware isn't finished yet and may contain serious issues.
+Please note the [errata](pcb/rev.A/ERRATA.txt) for rev.A pcb.
 
 ### SID
 MOS-6581 or MOS-8580 may be installed, but with some cautions. This addon doesn't contain buffers between SID and bus connector, and that may cause SID's damage by ESD if no luck. As I have no real SID, I've checked this addon only with SwinSID.
diff --git a/pcb/rev.A/ERRATA.txt b/pcb/rev.A/ERRATA.txt
new file mode 100644
index 0000000..32677a1
--- /dev/null
+++ b/pcb/rev.A/ERRATA.txt
@@ -0,0 +1,3 @@
+Quiet sound output from nanoSwinSID.
+
+Incorrect A8 and A10 signal connections on ZXBUS connector. A8 should be connected to pin B26 and A10 to B27 to get SID working.