From 02c8aa44c377699bdb111fec34a15f1f77e4aa68 Mon Sep 17 00:00:00 2001
From: 987123879113 <63495610+987123879113@users.noreply.github.com>
Date: Wed, 15 May 2024 13:48:18 +0900
Subject: [PATCH] konami/konamigv, konami/konamigq, konami/twinkle: Adjust DMA
 timings

---
 src/mame/konami/konamigq.cpp | 8 ++++----
 src/mame/konami/konamigv.cpp | 8 ++++----
 src/mame/konami/twinkle.cpp  | 8 ++++----
 3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/src/mame/konami/konamigq.cpp b/src/mame/konami/konamigq.cpp
index 004f6a105cb0a..74c45be2d5760 100644
--- a/src/mame/konami/konamigq.cpp
+++ b/src/mame/konami/konamigq.cpp
@@ -287,7 +287,7 @@ void konamigq_state::scsi_dma_read( uint32_t *p_n_psxram, uint32_t n_address, in
 	m_dma_offset = n_address;
 	m_dma_size = n_size * 4;
 	m_dma_is_write = false;
-	m_dma_timer->adjust(attotime::from_usec(10));
+	m_dma_timer->adjust(attotime::zero);
 }
 
 void konamigq_state::scsi_dma_write( uint32_t *p_n_psxram, uint32_t n_address, int32_t n_size )
@@ -296,7 +296,7 @@ void konamigq_state::scsi_dma_write( uint32_t *p_n_psxram, uint32_t n_address, i
 	m_dma_offset = n_address;
 	m_dma_size = n_size * 4;
 	m_dma_is_write = true;
-	m_dma_timer->adjust(attotime::from_usec(10));
+	m_dma_timer->adjust(attotime::zero);
 }
 
 TIMER_CALLBACK_MEMBER(konamigq_state::scsi_dma_transfer)
@@ -313,13 +313,13 @@ TIMER_CALLBACK_MEMBER(konamigq_state::scsi_dma_transfer)
 	}
 
 	if (m_dma_requested && m_dma_size > 0)
-		m_dma_timer->adjust(attotime::from_usec(10));
+		m_dma_timer->adjust(attotime::zero);
 }
 
 void konamigq_state::scsi_drq(int state)
 {
 	if (!m_dma_requested && state)
-		m_dma_timer->adjust(attotime::from_usec(10));
+		m_dma_timer->adjust(attotime::zero);
 
 	m_dma_requested = state;
 }
diff --git a/src/mame/konami/konamigv.cpp b/src/mame/konami/konamigv.cpp
index 0935ce6c7734f..5f6e04d5ef82d 100644
--- a/src/mame/konami/konamigv.cpp
+++ b/src/mame/konami/konamigv.cpp
@@ -455,7 +455,7 @@ void konamigv_state::scsi_dma_read(uint32_t *p_n_psxram, uint32_t n_address, int
 	m_dma_offset = n_address;
 	m_dma_size = n_size * 4;
 	m_dma_is_write = false;
-	m_dma_timer->adjust(attotime::from_usec(10));
+	m_dma_timer->adjust(attotime::zero);
 }
 
 void konamigv_state::scsi_dma_write(uint32_t *p_n_psxram, uint32_t n_address, int32_t n_size)
@@ -464,7 +464,7 @@ void konamigv_state::scsi_dma_write(uint32_t *p_n_psxram, uint32_t n_address, in
 	m_dma_offset = n_address;
 	m_dma_size = n_size * 4;
 	m_dma_is_write = true;
-	m_dma_timer->adjust(attotime::from_usec(10));
+	m_dma_timer->adjust(attotime::zero);
 }
 
 TIMER_CALLBACK_MEMBER(konamigv_state::scsi_dma_transfer)
@@ -481,13 +481,13 @@ TIMER_CALLBACK_MEMBER(konamigv_state::scsi_dma_transfer)
 	}
 
 	if (m_dma_requested && m_dma_size > 0)
-		m_dma_timer->adjust(attotime::from_usec(10));
+		m_dma_timer->adjust(attotime::zero);
 }
 
 void konamigv_state::scsi_drq(int state)
 {
 	if (!m_dma_requested && state)
-		m_dma_timer->adjust(attotime::from_usec(10));
+		m_dma_timer->adjust(attotime::zero);
 
 	m_dma_requested = state;
 }
diff --git a/src/mame/konami/twinkle.cpp b/src/mame/konami/twinkle.cpp
index cf91266a77f71..bebfc8ee958e2 100644
--- a/src/mame/konami/twinkle.cpp
+++ b/src/mame/konami/twinkle.cpp
@@ -1088,7 +1088,7 @@ void twinkle_state::scsi_dma_read(uint32_t *p_n_psxram, uint32_t n_address, int3
 	m_dma_offset = n_address;
 	m_dma_size = n_size * 4;
 	m_dma_is_write = false;
-	m_dma_timer->adjust(attotime::from_usec(10));
+	m_dma_timer->adjust(attotime::zero);
 }
 
 void twinkle_state::scsi_dma_write(uint32_t *p_n_psxram, uint32_t n_address, int32_t n_size)
@@ -1097,7 +1097,7 @@ void twinkle_state::scsi_dma_write(uint32_t *p_n_psxram, uint32_t n_address, int
 	m_dma_offset = n_address;
 	m_dma_size = n_size * 4;
 	m_dma_is_write = true;
-	m_dma_timer->adjust(attotime::from_usec(10));
+	m_dma_timer->adjust(attotime::zero);
 }
 
 TIMER_CALLBACK_MEMBER(twinkle_state::scsi_dma_transfer)
@@ -1114,13 +1114,13 @@ TIMER_CALLBACK_MEMBER(twinkle_state::scsi_dma_transfer)
 	}
 
 	if (m_dma_requested && m_dma_size > 0)
-		m_dma_timer->adjust(attotime::from_usec(10));
+		m_dma_timer->adjust(attotime::zero);
 }
 
 void twinkle_state::scsi_drq(int state)
 {
 	if (!m_dma_requested && state)
-		m_dma_timer->adjust(attotime::from_usec(10));
+		m_dma_timer->adjust(attotime::zero);
 
 	m_dma_requested = state;
 }