From 809c0bb5ee773cce590a94164c3e29b76f7bf125 Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Thu, 6 Oct 2016 01:40:23 +0200
Subject: [PATCH] FDC FIFO now ignored completely when FIFO length is 1 byte.

---
 src/fdc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/fdc.c b/src/fdc.c
index 1adf7d500..f3b82844c 100644
--- a/src/fdc.c
+++ b/src/fdc.c
@@ -1598,7 +1598,7 @@ int fdc_data(uint8_t data)
                         return -1;
                 }
 
-		if (fdc.pcjr || !fdc.fifo)
+		if (fdc.pcjr || !fdc.fifo || (fdc.tfifo <= 1))
 		{
 	                fdc.dat = data;
 	                fdc.data_ready = 1;
@@ -1621,7 +1621,7 @@ int fdc_data(uint8_t data)
                 if (dma_channel_write(2, data) & DMA_OVER)
                         fdc.tc = 1;
 
-		if (!fdc.fifo)
+		if (!fdc.fifo || (fdc.tfifo <= 1))
 		{
 	                fdc.data_ready = 1;
 	                fdc.stat = 0xd0;