diff --git a/src/add-ons/accelerants/nvidia/engine/nv_acc_dma.c b/src/add-ons/accelerants/nvidia/engine/nv_acc_dma.c
index f8c6a76418..115c1b40d6 100644
--- a/src/add-ons/accelerants/nvidia/engine/nv_acc_dma.c
+++ b/src/add-ons/accelerants/nvidia/engine/nv_acc_dma.c
@@ -454,10 +454,6 @@ status_t nv_acc_init_dma()
 				ACCW(BPIXEL, 0x00000021);
 			ACCW(STRD_FMT, 0x03020202);
 			/* PRAMIN */
-			ACCW(PR_CTX1_9, 0x00000302); /* format is X24Y8, LSB mono */
-			ACCW(PR_CTX2_9, 0x00000302); /* dma_instance 0 valid, instance 1 invalid */
-			ACCW(PR_CTX1_B, 0x00000000); /* format is invalid */
-			ACCW(PR_CTX1_C, 0x00000000); /* format is invalid */
 			if (si->ps.card_arch == NV04A)
 			{
 				ACCW(PR_CTX1_D, 0x00000302); /* format is X24Y8, LSB mono */
@@ -479,20 +475,11 @@ status_t nv_acc_init_dma()
 				ACCW(BPIXEL, 0x00000042);
 			ACCW(STRD_FMT, 0x09080808);
 			/* PRAMIN */
-			ACCW(PR_CTX1_9, 0x00000902); /* format is X17RGB15, LSB mono */
-			ACCW(PR_CTX2_9, 0x00000902); /* dma_instance 0 valid, instance 1 invalid */
-			if (si->ps.card_arch == NV04A)
+			ACCW(PR_CTX1_D, 0x00000902); /* format is X17RGB15, LSB mono */
+			if (si->ps.card_arch != NV04A)
 			{
-				ACCW(PR_CTX1_B, 0x00000702); /* format is X1RGB15, LSB mono */
-				ACCW(PR_CTX1_C, 0x00000702); /* format is X1RGB15, LSB mono */
-			}
-			else
-			{
-				ACCW(PR_CTX1_B, 0x00000902); /* format is X17RGB15, LSB mono */
-				ACCW(PR_CTX1_C, 0x00000902); /* format is X17RGB15, LSB mono */
 				ACCW(PR_CTX1_E, 0x00000902); /* format is X17RGB15, LSB mono */
 			}
-			ACCW(PR_CTX1_D, 0x00000902); /* format is X17RGB15, LSB mono */
 			break;
 		case B_RGB16_LITTLE:
 			/* acc engine */
@@ -508,20 +495,11 @@ status_t nv_acc_init_dma()
 			else
 				ACCW(STRD_FMT, 0x000b0b0c);
 			/* PRAMIN */
-			ACCW(PR_CTX1_9, 0x00000c02); /* format is X16RGB16, LSB mono */
-			ACCW(PR_CTX2_9, 0x00000c02); /* dma_instance 0 valid, instance 1 invalid */
-			if (si->ps.card_arch == NV04A)
+			ACCW(PR_CTX1_D, 0x00000c02); /* format is X16RGB16, LSB mono */
+			if (si->ps.card_arch != NV04A)
 			{
-				ACCW(PR_CTX1_B, 0x00000702); /* format is X1RGB15, LSB mono */
-				ACCW(PR_CTX1_C, 0x00000702); /* format is X1RGB15, LSB mono */
-			}
-			else
-			{
-				ACCW(PR_CTX1_B, 0x00000c02); /* format is X16RGB16, LSB mono */
-				ACCW(PR_CTX1_C, 0x00000c02); /* format is X16RGB16, LSB mono */
 				ACCW(PR_CTX1_E, 0x00000c02); /* format is X16RGB16, LSB mono */
 			}
-			ACCW(PR_CTX1_D, 0x00000c02); /* format is X16RGB16, LSB mono */
 			break;
 		case B_RGB32_LITTLE:
 		case B_RGBA32_LITTLE:
@@ -535,10 +513,6 @@ status_t nv_acc_init_dma()
 				ACCW(BPIXEL, 0x000000e7);
 			ACCW(STRD_FMT, 0x0e0d0d0d);
 			/* PRAMIN */
-			ACCW(PR_CTX1_9, 0x00000e02); /* format is X8RGB24, LSB mono */
-			ACCW(PR_CTX2_9, 0x00000e02); /* dma_instance 0 valid, instance 1 invalid */
-			ACCW(PR_CTX1_B, 0x00000e02); /* format is X8RGB24, LSB mono */
-			ACCW(PR_CTX1_C, 0x00000e02); /* format is X8RGB24, LSB mono */
 			ACCW(PR_CTX1_D, 0x00000e02); /* format is X8RGB24, LSB mono */
 			if (si->ps.card_arch >= NV10A)
 				ACCW(PR_CTX1_E, 0x00000e02); /* format is X8RGB24, LSB mono */