diff --git a/src/devices/cpu/rsp/rspcp2d.cpp b/src/devices/cpu/rsp/rspcp2d.cpp
index c755a3528ac..c904caf8646 100644
--- a/src/devices/cpu/rsp/rspcp2d.cpp
+++ b/src/devices/cpu/rsp/rspcp2d.cpp
@@ -301,7 +301,7 @@ void rsp_cop2_drc::lsv()
 	uint32_t op = m_rspcop2_state->op;
 	int dest = (op >> 16) & 0x1f;
 	int base = (op >> 21) & 0x1f;
-	int index = (op >> 7) & 0xe;
+	int index = (op >> 7) & 0xf;
 	int offset = (op & 0x7f);
 	if (offset & 0x40)
 	{
@@ -338,7 +338,7 @@ void rsp_cop2_drc::llv()
 	uint32_t ea;
 	int dest = (op >> 16) & 0x1f;
 	int base = (op >> 21) & 0x1f;
-	int index = (op >> 7) & 0xc;
+	int index = (op >> 7) & 0xf;
 	int offset = (op & 0x7f);
 	if (offset & 0x40)
 	{
@@ -377,7 +377,7 @@ void rsp_cop2_drc::ldv()
 	uint32_t ea;
 	int dest = (op >> 16) & 0x1f;
 	int base = (op >> 21) & 0x1f;
-	int index = (op >> 7) & 0x8;
+	int index = (op >> 7) & 0xf;
 	int offset = (op & 0x7f);
 	if (offset & 0x40)
 	{
@@ -906,7 +906,7 @@ void rsp_cop2_drc::sdv()
 	uint32_t op = m_rspcop2_state->op;
 	int dest = (op >> 16) & 0x1f;
 	int base = (op >> 21) & 0x1f;
-	int index = (op >> 7) & 0x8;
+	int index = (op >> 7) & 0xf;
 	int offset = (op & 0x7f);
 	if (offset & 0x40)
 	{
diff --git a/src/mame/video/n64.cpp b/src/mame/video/n64.cpp
index 014c41b718c..762b5de0854 100644
--- a/src/mame/video/n64.cpp
+++ b/src/mame/video/n64.cpp
@@ -1664,7 +1664,7 @@ void n64_rdp::disassemble(char* buffer)
 		case 0x2f:  sprintf(buffer, "Set_Other_Modes        %08X %08X", uint32_t(cmd[0] >> 32), (uint32_t)cmd[0]); break;
 		case 0x30:  sprintf(buffer, "Load_TLUT              %d, %s, %s, %s, %s", tile, sl, tl, sh, th); break;
 		case 0x32:  sprintf(buffer, "Set_Tile_Size          %d, %s, %s, %s, %s", tile, sl, tl, sh, th); break;
-		case 0x33:  sprintf(buffer, "Load_Block             %d, %03X, %03X, %03X, %03X", tile, uint32_t(cmd[0] >> 44) & 0xfff, uint32_t(cmd[0] >> 32) & 0xfff, uint32_t(cmd[0] >> 12) & 0xfff, uint32_t(cmd[1]) & 0xfff); break;
+		case 0x33:  sprintf(buffer, "Load_Block             %d, %03X, %03X, %03X, %03X", tile, uint32_t(cmd[0] >> 44) & 0xfff, uint32_t(cmd[0] >> 32) & 0xfff, uint32_t(cmd[0] >> 12) & 0xfff, uint32_t(cmd[0]) & 0xfff); break;
 		case 0x34:  sprintf(buffer, "Load_Tile              %d, %s, %s, %s, %s", tile, sl, tl, sh, th); break;
 		case 0x35:  sprintf(buffer, "Set_Tile               %d, %s, %s, %d, %04X", tile, format, size, (uint32_t(cmd[0] >> 41) & 0x1ff) * 8, (uint32_t(cmd[0] >> 32) & 0x1ff) * 8); break;
 		case 0x36:  sprintf(buffer, "Fill_Rectangle         %s, %s, %s, %s", sh, th, sl, tl); break;