From 2c1a2d0defb7e9c4aaf0df6beb6b8615db9c0cfe Mon Sep 17 00:00:00 2001
From: ekeeke <ekeeke31@gmail.com>
Date: Mon, 22 Jan 2024 00:34:24 +0100
Subject: [PATCH] [Core/CD] improved accuracy of CDC DMA to PRG-RAM
 write-protected area (verified on real hardware, cf. Krikzz's
 mcd-verificator)

---
 core/cd_hw/scd.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/core/cd_hw/scd.c b/core/cd_hw/scd.c
index 6a48817..4498291 100644
--- a/core/cd_hw/scd.c
+++ b/core/cd_hw/scd.c
@@ -133,12 +133,6 @@ void prg_ram_dma_w(unsigned int length)
   /* update DMA source address */
   cdc.dac.w += (words << 1);
 
-  /* check PRG-RAM write protected area */
-  if (dst_index < (scd.regs[0x02>>1].byte.h << 9))
-  {
-    return;
-  }
-
   /* DMA transfer */
   while (words--)
   {