z280rc: fix tty blocking

diff --git a/Kernel/platform-z280rc/devtty.c b/Kernel/platform-z280rc/devtty.c
index baa3088..b32bb6c 100644 (file)
--- a/Kernel/platform-z280rc/devtty.c
+++ b/Kernel/platform-z280rc/devtty.c
@@ -39,8 +39,10 @@ struct s_queue ttyinq[NUM_DEV_TTY + 1] = {   /* ttyinq[0] is never used */
 
 void kputchar(char c)
 {
+       while(tty_writeready(1) != TTY_READY_NOW);
        if (c == '\n')
                tty_putc(1, '\r');
+       while(tty_writeready(1) != TTY_READY_NOW);
        tty_putc(1, c);
 }