diff --git a/src/cpu/cpu_table.c b/src/cpu/cpu_table.c
index 9c39cac37..f128578d1 100644
--- a/src/cpu/cpu_table.c
+++ b/src/cpu/cpu_table.c
@@ -204,8 +204,8 @@ CPU cpus_i486[] = {
     {"i486SX/20",            CPU_i486SX,   20000000, 1, 20000000,  0x42a,      0, 0, CPU_SUPPORTS_DYNAREC,  4, 4,3,3,  3},
     {"i486SX/25",            CPU_i486SX,   25000000, 1, 25000000,  0x42a,      0, 0, CPU_SUPPORTS_DYNAREC,  4, 4,3,3,  3},
     {"i486SX/33",            CPU_i486SX,   33333333, 1, 33333333,  0x42a,      0, 0, CPU_SUPPORTS_DYNAREC,  6, 6,3,3,  4},
-    {"i486SX2/50",           CPU_i486SX,   50000000, 2, 25000000,  0x45b,  0x45b, 0, CPU_SUPPORTS_DYNAREC,  8, 8,6,6,  6},
-    {"i486SX2/66 (Q0569)",   CPU_i486SX,   66666666, 2, 33333333,  0x45b,  0x45b, 0, CPU_SUPPORTS_DYNAREC,  8, 8,6,6,  8},
+    {"i486SX2/50",           CPU_i486SX,   50000000, 2, 25000000,  0x45b,      0, 0, CPU_SUPPORTS_DYNAREC,  8, 8,6,6,  6},
+    {"i486SX2/66 (Q0569)",   CPU_i486SX,   66666666, 2, 33333333,  0x45b,      0, 0, CPU_SUPPORTS_DYNAREC,  8, 8,6,6,  8},
     {"i486DX/25",            CPU_i486DX,   25000000, 1, 25000000,  0x404,      0, 0, CPU_SUPPORTS_DYNAREC,  4, 4,3,3,  3},
     {"i486DX/33",            CPU_i486DX,   33333333, 1, 33333333,  0x404,      0, 0, CPU_SUPPORTS_DYNAREC,  6, 6,3,3,  4},
     {"i486DX/50",            CPU_i486DX,   50000000, 1, 25000000,  0x404,      0, 0, CPU_SUPPORTS_DYNAREC,  8, 8,4,4,  6},
diff --git a/src/cpu_new/cpu_table.c b/src/cpu_new/cpu_table.c
index 1edede975..3f78bec94 100644
--- a/src/cpu_new/cpu_table.c
+++ b/src/cpu_new/cpu_table.c
@@ -207,8 +207,8 @@ CPU cpus_i486[] = {
     {"i486SX/20",            CPU_i486SX,   20000000, 1, 20000000,  0x42a,      0, 0, CPU_SUPPORTS_DYNAREC,  4, 4,3,3,  3},
     {"i486SX/25",            CPU_i486SX,   25000000, 1, 25000000,  0x42a,      0, 0, CPU_SUPPORTS_DYNAREC,  4, 4,3,3,  3},
     {"i486SX/33",            CPU_i486SX,   33333333, 1, 33333333,  0x42a,      0, 0, CPU_SUPPORTS_DYNAREC,  6, 6,3,3,  4},
-    {"i486SX2/50",           CPU_i486SX,   50000000, 2, 25000000,  0x45b,  0x45b, 0, CPU_SUPPORTS_DYNAREC,  8, 8,6,6,  6},
-    {"i486SX2/66 (Q0569)",   CPU_i486SX,   66666666, 2, 33333333,  0x45b,  0x45b, 0, CPU_SUPPORTS_DYNAREC,  8, 8,6,6,  8},
+    {"i486SX2/50",           CPU_i486SX,   50000000, 2, 25000000,  0x45b,      0, 0, CPU_SUPPORTS_DYNAREC,  8, 8,6,6,  6},
+    {"i486SX2/66 (Q0569)",   CPU_i486SX,   66666666, 2, 33333333,  0x45b,      0, 0, CPU_SUPPORTS_DYNAREC,  8, 8,6,6,  8},
     {"i486DX/25",            CPU_i486DX,   25000000, 1, 25000000,  0x404,      0, 0, CPU_SUPPORTS_DYNAREC,  4, 4,3,3,  3},
     {"i486DX/33",            CPU_i486DX,   33333333, 1, 33333333,  0x404,      0, 0, CPU_SUPPORTS_DYNAREC,  6, 6,3,3,  4},
     {"i486DX/50",            CPU_i486DX,   50000000, 1, 25000000,  0x404,      0, 0, CPU_SUPPORTS_DYNAREC,  8, 8,4,4,  6},