From 61fc12d8d74805c20365e5fdc60f1d1866b974ef Mon Sep 17 00:00:00 2001
From: Angelo Salese <angelosa@users.noreply.github.com>
Date: Sun, 25 Apr 2010 11:36:21 +0000
Subject: [PATCH] Implemented Sort-DMA irq firing [Angelo Salese]

---
 src/mame/machine/dc.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/src/mame/machine/dc.c b/src/mame/machine/dc.c
index 6a4c3cc0b58..d21f2ef6f4f 100644
--- a/src/mame/machine/dc.c
+++ b/src/mame/machine/dc.c
@@ -529,9 +529,17 @@ WRITE64_HANDLER( dc_sysctrl_w )
 			dc_sysctrl_regs[SB_ISTERR] = old & ~dat;
 			break;
 		case SB_SDST:
-			#if DEBUG_SYSCTRL
-			mame_printf_verbose("SYSCTRL: Sort-DMA not supported yet !!!\n");
-			#endif
+			//#if DEBUG_SYSCTRL
+			//mame_printf_verbose("SYSCTRL: Sort-DMA not supported yet !!!\n");
+			//#endif
+			if(dat & 1)
+			{
+				// TODO: Sort-DMA routine goes here
+				printf("Sort-DMA irq\n");
+
+				dc_sysctrl_regs[SB_ISTNRM] |= IST_DMA_SORT;
+				dc_sysctrl_regs[SB_SDST] = 0;
+			}
 			break;
 	}
 	dc_update_interrupt_status(space->machine);