From c45db2e8eeabc05b76c7938dd4e670c6e2d724b3 Mon Sep 17 00:00:00 2001
From: Stephen Crane <jscrane@gmail.com>
Date: Wed, 8 Jul 2020 14:33:52 +0100
Subject: [PATCH] esp8266 wants ICACHE_RAM_ATTR

---
 ps2drv.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ps2drv.cpp b/ps2drv.cpp
index 9a1b5c7..17a74d3 100644
--- a/ps2drv.cpp
+++ b/ps2drv.cpp
@@ -10,6 +10,9 @@ static volatile uint8_t head, tail;
 static uint8_t DataPin;
 
 // The ISR for the external interrupt
+#if defined(ESP32) || defined(ESP8266)
+ICACHE_RAM_ATTR
+#endif
 void ps2interrupt(void)
 {
 	static uint8_t bitcount=0;