From 14ab294a473a2f8d28872886a03cd8691b9a77c9 Mon Sep 17 00:00:00 2001
From: drmortalwombat <90205530+drmortalwombat@users.noreply.github.com>
Date: Sun, 2 Apr 2023 13:51:53 +0200
Subject: [PATCH] Add getchx() call to conio

---
 include/conio.c | 11 +++++++++++
 include/conio.h |  4 ++++
 2 files changed, 15 insertions(+)

diff --git a/include/conio.c b/include/conio.c
index ea6a5b7..74226d0 100644
--- a/include/conio.c
+++ b/include/conio.c
@@ -220,6 +220,17 @@ int getch(void)
 	}
 }
 
+int getchx(void)
+{
+	__asm
+	{
+		jsr	getpch
+		sta	accu
+		lda	#0
+		sta	accu + 1		
+	}
+}
+
 void putch(int c)
 {
 	__asm {
diff --git a/include/conio.h b/include/conio.h
index 370e5d8..28a72b4 100644
--- a/include/conio.h
+++ b/include/conio.h
@@ -25,6 +25,10 @@ int getche(void);
 
 int getch(void);
 
+// like getch but does not wait, returns zero if no
+// key is pressed
+int getchx(void);
+
 void putch(int c);
 
 void clrscr(void);