2 files changed, 2 insertions, 1 deletions
diff --git a/TODO.md b/TODO.md
index 8e0686d..b952c9d 100644
--- a/TODO.md
+++ b/TODO.md
@@ -3,3 +3,4 @@ TODO List
 
 - TODO: eliminate xmalloc
 - TODO: build time directory as lib
+- TODO: command 'help <topic>' should return success
diff --git a/avr/z80-if.c b/avr/z80-if.c
index b64e755..d5dc2d7 100644
--- a/avr/z80-if.c
+++ b/avr/z80-if.c
@@ -593,7 +593,7 @@ int z80_memfifo_is_empty(const fifo_t f)
 
 int z80_memfifo_is_full(const fifo_t f)
 {
-	int rc = 1;
+	int rc = 0;
 
 	if (fifo_dsc[f].base != 0) {
 		z80_bus_cmd(Request);