From e73071ed10034d6b7766c057927e75de84ac501a Mon Sep 17 00:00:00 2001
From: Alan Cox <alan@linux.intel.com>
Date: Fri, 6 Jul 2018 22:20:50 +0100
Subject: [PATCH] trs80m1: don't do kernel video writes when in micrografyx
 mode

---
 Kernel/platform-trs80m1/devtty.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Kernel/platform-trs80m1/devtty.c b/Kernel/platform-trs80m1/devtty.c
index 81ff082f..d28fafc2 100644
--- a/Kernel/platform-trs80m1/devtty.c
+++ b/Kernel/platform-trs80m1/devtty.c
@@ -7,6 +7,7 @@
 #include <devtty.h>
 #include <input.h>
 #include <devinput.h>
+#include <devgfx.h>
 #include <stdarg.h>
 
 static char tbuf1[TTYSIZ];
@@ -89,6 +90,8 @@ void tty_putc(uint8_t minor, unsigned char c)
     if (minor == 3)
         tr1865_rxtx = c;
     else {
+        if (video_mode == 2)	/* Micrografyx */
+          return;
         irq = di();
         if (curtty != minor -1) {
             /* Kill the cursor as we are changing the memory buffers. If
-- 
2.34.1