diff --git a/src/video/vid_chips_69000.c b/src/video/vid_chips_69000.c
index e7486a684..57871e33f 100644
--- a/src/video/vid_chips_69000.c
+++ b/src/video/vid_chips_69000.c
@@ -475,6 +475,9 @@ chips_69000_do_rop_8bpp_patterned(uint8_t *dst, uint8_t pattern, uint8_t src, ui
             break;
         case 0xAA:
             break; /* No-op. */
+        case 0xAC:
+            *dst = src ^ (pattern & (*dst ^ src));
+            break;
         case 0xAF:
             *dst |= ~pattern;
             break;
@@ -484,6 +487,9 @@ chips_69000_do_rop_8bpp_patterned(uint8_t *dst, uint8_t pattern, uint8_t src, ui
         case 0xCA:
             *dst ^= (pattern & (src ^ *dst));
             break;
+        case 0xE2:
+            *dst ^= (src & (pattern ^ *dst));
+            break;
         case 0xDA:
             *dst ^= pattern & (~(src & *dst));
             break;
@@ -502,6 +508,9 @@ chips_69000_do_rop_8bpp_patterned(uint8_t *dst, uint8_t pattern, uint8_t src, ui
         case 0xFF:
             *dst = 0xFF;
             break;
+        default:
+            pclog("Unknown ROP 0x%X\n", rop);
+            break;
     }
 }
 
@@ -513,6 +522,9 @@ chips_69000_do_rop_16bpp_patterned(uint16_t *dst, uint16_t pattern, uint16_t src
     }
 
     switch (rop) {
+        default:
+            pclog("Unknown ROP 0x%X\n", rop);
+            break;
         case 0x00:
             *dst = 0;
             break;
@@ -572,6 +584,9 @@ chips_69000_do_rop_16bpp_patterned(uint16_t *dst, uint16_t pattern, uint16_t src
             break;
         case 0xAA:
             break; /* No-op. */
+        case 0xAC:
+            *dst = src ^ (pattern & (*dst ^ src));
+            break;
         case 0xAF:
             *dst |= ~pattern;
             break;
@@ -581,6 +596,9 @@ chips_69000_do_rop_16bpp_patterned(uint16_t *dst, uint16_t pattern, uint16_t src
         case 0xCA:
             *dst ^= (pattern & (src ^ *dst));
             break;
+        case 0xE2:
+            *dst ^= (src & (pattern ^ *dst));
+            break;
         case 0xDA:
             *dst ^= pattern & (~(src & *dst));
             break;
@@ -612,6 +630,9 @@ chips_69000_do_rop_24bpp_patterned(uint32_t *dst, uint32_t pattern, uint32_t src
     }
 
     switch (rop) {
+        default:
+            pclog("Unknown ROP 0x%X\n", rop);
+            break;
         case 0x00:
             *dst = 0;
             break;
@@ -671,6 +692,9 @@ chips_69000_do_rop_24bpp_patterned(uint32_t *dst, uint32_t pattern, uint32_t src
             break;
         case 0xAA:
             break; /* No-op. */
+        case 0xAC:
+            *dst = src ^ (pattern & (*dst ^ src));
+            break;
         case 0xAF:
             *dst |= ~pattern;
             break;
@@ -683,6 +707,9 @@ chips_69000_do_rop_24bpp_patterned(uint32_t *dst, uint32_t pattern, uint32_t src
         case 0xDA:
             *dst ^= pattern & (~(src & *dst));
             break;
+        case 0xE2:
+            *dst ^= (src & (pattern ^ *dst));
+            break;
         case 0xEA:
             *dst |= pattern & src;
             break;
@@ -853,7 +880,7 @@ chips_69000_process_pixel(chips_69000_t* chips, uint32_t pixel)
         if (chips->bitblt_running.bitblt.bitblt_control & (1 << 19))
             pattern_data = 0;
         else
-            pattern_data = chips_69000_readb_linear(chips->bitblt_running.bitblt.pat_addr + ((vert_pat_alignment + chips->bitblt_running.y) & 7), chips);
+            pattern_data = chips_69000_readb_linear(chips->bitblt_running.bitblt.pat_addr + ((vert_pat_alignment + (chips->bitblt_running.y & 7)) & 7), chips);
 
         is_true = !!(pattern_data & (1 << (((chips->bitblt_running.bitblt.destination_addr & 7) + chips->bitblt_running.x) & 7)));