From c2eb7897bc808373c26bf9cb884b2398a8a5e19d Mon Sep 17 00:00:00 2001
From: Sam Colwell <scolwell@nfatech.com>
Date: Sun, 4 Nov 2018 12:04:59 -0500
Subject: [PATCH] Change non-blocking reads to have 0.1 second timeout

---
 py65/monitor.py       | 4 ++--
 py65/utils/console.py | 8 ++------
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/py65/monitor.py b/py65/monitor.py
index 9560fe8..9e52bae 100644
--- a/py65/monitor.py
+++ b/py65/monitor.py
@@ -480,9 +480,9 @@ class Monitor(cmd.Cmd):
             newattr = self.oldattr[:]
             newattr[3] &= ~termios.ICANON & ~termios.ECHO
 
-            # Switch to non-blocking reads.
+            # Switch to non-blocking reads with 0.1 second timeout.
             newattr[6][termios.VMIN] = 0
-            newattr[6][termios.VTIME] = 0
+            newattr[6][termios.VTIME] = 1
             termios.tcsetattr(fd, termios.TCSANOW, newattr)
 
 
diff --git a/py65/utils/console.py b/py65/utils/console.py
index 64a51a4..380377f 100644
--- a/py65/utils/console.py
+++ b/py65/utils/console.py
@@ -35,10 +35,8 @@ else:
         Does not echo the character.
         """
         # Try to get a character with a non-blocking read.
-        char = stdin.read(1)
+        char = ''
         while char == '':
-            # If we don't get one right away, wait a bit and try again.
-            time.sleep(0.001)
             char = stdin.read(1)
         return char
 
@@ -49,9 +47,7 @@ else:
         char = ''
         # Using non-blocking read as set up in Monitor._run
         char = stdin.read(1)
-        if char == '':
-            # Don't use 100% CPU while waiting for input.
-            time.sleep(0.001)
+
         if char == "\n":
             char = "\r"
         return char