From 60e8273de213576a1dd9363631541c77639d6ce3 Mon Sep 17 00:00:00 2001 From: Thomas Harte Date: Tue, 6 Apr 2021 21:04:54 -0400 Subject: [PATCH] Tweaks video timing, again. --- Machines/Sinclair/ZXSpectrum/Video.hpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Machines/Sinclair/ZXSpectrum/Video.hpp b/Machines/Sinclair/ZXSpectrum/Video.hpp index 41122b219..371697511 100644 --- a/Machines/Sinclair/ZXSpectrum/Video.hpp +++ b/Machines/Sinclair/ZXSpectrum/Video.hpp @@ -88,10 +88,10 @@ template class Video { .cycles_per_line = 228 * 2, .lines_per_frame = 311, - // i.e. video fetching begins six cycles after the start of the + // i.e. video fetching begins five cycles after the start of the // contended memory pattern below; that should put a clear two // cycles between a Z80 access and the first video fetch. - .contention_leadin = 6 * 2, + .contention_leadin = 5 * 2, .contention_duration = 129 * 2, // i.e. interrupt is first signalled 14368 cycles before the first video fetch.