From: Toni Wilen <twilen@winuae.net>
Date: Sat, 2 Mar 2019 19:30:39 +0000 (+0200)
Subject: 68020/030 CE mode write access speed adjustment.
X-Git-Tag: 4200~32
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=92d500a6d62f6a4b4c47a91f713066e9bd76bdb6;p=francis%2Fwinuae.git

68020/030 CE mode write access speed adjustment.
---

diff --git a/custom.cpp b/custom.cpp
index e7d43142..91156b3b 100644
--- a/custom.cpp
+++ b/custom.cpp
@@ -11655,7 +11655,9 @@ void wait_cpu_cycle_write_ce020 (uaecptr addr, int mode, uae_u32 v)
 	else if (mode == 0)
 		put_byte (addr, v);
 
-	x_do_cycles_post (CYCLE_UNIT, v);
+	// chipset buffer latches the write, CPU does
+	// not need to wait for the chipset cycle to finish.
+	x_do_cycles_post (cpucycleunit + cpucycleunit / 2, v);
 
 	regs.chipset_latch_rw = regs.chipset_latch_write = v;
 	SETIFCHIP