From 41ba883fb6597b84eeb32a8bfe578d6e4c615700 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Sat, 28 Jan 2023 22:47:27 -0500
Subject: [PATCH] Honour direction, start transfer immediately.

---
 Components/9918/Implementation/YamahaCommands.hpp | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/Components/9918/Implementation/YamahaCommands.hpp b/Components/9918/Implementation/YamahaCommands.hpp
index 3ffc8a115..26a1b1949 100644
--- a/Components/9918/Implementation/YamahaCommands.hpp
+++ b/Components/9918/Implementation/YamahaCommands.hpp
@@ -175,8 +175,9 @@ struct LogicalMoveFromCPU: public Command {
 			start_x_ = context.destination.v[0];
 			width_ = context.size.v[0];
 
-			cycles = 64;
-			access = AccessType::WaitForColour;
+			// This command is started with the first colour ready to transfer.
+			cycles = 32;
+			access = AccessType::PlotPoint;
 			is_cpu_transfer = true;
 		}
 
@@ -193,15 +194,15 @@ struct LogicalMoveFromCPU: public Command {
 				case AccessType::PlotPoint:
 					cycles = 0;
 					access = AccessType::WaitForColour;
-					++location.v[0];
+					context.destination.add<0>(context.arguments & 0x4 ? -1 : 1);
 					--context.size.v[0];
 
 					if(!context.size.v[0]) {
 						cycles = 64;
 						context.size.v[0] = width_;
-						location.v[0] = start_x_;
+						context.destination.v[0] = start_x_;
 
-						++location.v[1];
+						context.destination.add<1>(context.arguments & 0x8 ? -1 : 1);
 						--context.size.v[1];
 					}
 				break;