diff --git a/src/devices/cpu/c33/c33dasm.cpp b/src/devices/cpu/c33/c33dasm.cpp
index 2efffc5bf0a..0eb4fca42d6 100644
--- a/src/devices/cpu/c33/c33dasm.cpp
+++ b/src/devices/cpu/c33/c33dasm.cpp
@@ -4,7 +4,7 @@
     Epson C33 disassembler
 
     TODO:
-    * Only C33 ADV Core is currently supported - add support for C33 STD Core
+    * Only C33 ADV Core is currently supported - add support for C33 STD Core, C33 PE Core, etc.
     * Reconstruct more assembler synthetics
     * Should psrset and psrclr use symbolic names for bits?
     * Should 32-bit extended displacements always be displayed as signed?
@@ -106,54 +106,54 @@ std::tuple<char const *, bool, bool> const class_0_01_ops[32] = {
 		{ nullptr,                  false, false },
 		{ nullptr,                  false, false } };
 
-char const *const class_0_jumps[16] = {
-		nullptr,
-		nullptr,
-		nullptr,
-		nullptr,
-		"jrgt%1$s    0x%2$x",   // 000 0100
-		"jrge%1$s    0x%2$x",   // 000 0101
-		"jrlt%1$s    0x%2$x",   // 000 0110
-		"jrle%1$s    0x%2$x",   // 000 0111
-		"jrugt%1$s   0x%2$x",   // 000 1000
-		"jruge%1$s   0x%2$x",   // 000 1001
-		"jrult%1$s   0x%2$x",   // 000 1010
-		"jrule%1$s   0x%2$x",   // 000 1011
-		"jreq%1$s    0x%2$x",   // 000 1100
-		"jrne%1$s    0x%2$x",   // 000 1101
-		"call%1$s    0x%2$x",   // 000 1110
-		"jp%1$s      0x%2$x" }; // 000 1111
+std::pair<char const *, char const *> const class_0_jumps[16] = {
+		{ nullptr,              nullptr              },
+		{ nullptr,              nullptr              },
+		{ nullptr,              nullptr              },
+		{ nullptr,              nullptr              },
+		{ "jrgt%1$s    0x%2$x", "xjrgt%1$s   0x%2$x" },   // 000 0100
+		{ "jrge%1$s    0x%2$x", "xjrge%1$s   0x%2$x" },   // 000 0101
+		{ "jrlt%1$s    0x%2$x", "xjrlt%1$s   0x%2$x" },   // 000 0110
+		{ "jrle%1$s    0x%2$x", "xjrle%1$s   0x%2$x" },   // 000 0111
+		{ "jrugt%1$s   0x%2$x", "xjrugt%1$s  0x%2$x" },   // 000 1000
+		{ "jruge%1$s   0x%2$x", "xjruge%1$s  0x%2$x" },   // 000 1001
+		{ "jrult%1$s   0x%2$x", "xjrult%1$s  0x%2$x" },   // 000 1010
+		{ "jrule%1$s   0x%2$x", "xjrule%1$s  0x%2$x" },   // 000 1011
+		{ "jreq%1$s    0x%2$x", "xjreq%1$s   0x%2$x" },   // 000 1100
+		{ "jrne%1$s    0x%2$x", "xjrne%1$s   0x%2$x" },   // 000 1101
+		{ "call%1$s    0x%2$x", "xcall%1$s   0x%2$x" },   // 000 1110
+		{ "jp%1$s      0x%2$x", "xjp%1$s     0x%2$x" } }; // 000 1111
 
 std::pair<char const *, char const *> const class_1_ops[32] = {
-		{ "ld.b      %%r%1$u,[%%r%2$u]",  "ld.b      %%r%1$u,[%%r%2$u + 0x%4$x]" },   // 001 000 00
+		{ "ld.b      %%r%1$u,[%%r%2$u]",  "xld.b     %%r%1$u,[%%r%2$u + 0x%4$x]" },   // 001 000 00
 		{ "ld.b      %%r%1$u,[%%r%2$u]+", nullptr                                },   // 001 000 01
-		{ "add       %%r%1$u,%%r%2$u",    nullptr                                },   // 001 000 10
+		{ "add       %%r%1$u,%%r%2$u",    "xadd      %%r%1$u,%%r%2$u,0x%4$x"     },   // 001 000 10
 		{ "srl       %%r%1$u,%3$u",       nullptr                                },   // 001 000 11
-		{ "ld.ub     %%r%1$u,[%%r%2$u]",  "ld.ub     %%r%1$u,[%%r%2$u + 0x%4$x]" },   // 001 001 00
+		{ "ld.ub     %%r%1$u,[%%r%2$u]",  "xld.ub    %%r%1$u,[%%r%2$u + 0x%4$x]" },   // 001 001 00
 		{ "ld.ub     %%r%1$u,[%%r%2$u]+", nullptr                                },   // 001 001 01
-		{ "sub       %%r%1$u,%%r%2$u",    nullptr                                },   // 001 001 10
+		{ "sub       %%r%1$u,%%r%2$u",    "xsub      %%r%1$u,%%r%2$u,0x%4$x"     },   // 001 001 10
 		{ "sll       %%r%1$u,%3$u",       nullptr                                },   // 001 001 11
-		{ "ld.h      %%r%1$u,[%%r%2$u]",  "ld.h      %%r%1$u,[%%r%2$u + 0x%4$x]" },   // 001 010 00
+		{ "ld.h      %%r%1$u,[%%r%2$u]",  "xld.h     %%r%1$u,[%%r%2$u + 0x%4$x]" },   // 001 010 00
 		{ "ld.h      %%r%1$u,[%%r%2$u]+", nullptr                                },   // 001 010 01
 		{ "cmp       %%r%1$u,%%r%2$u",    nullptr                                },   // 001 010 10
 		{ "sra       %%r%1$u,%3$u",       nullptr                                },   // 001 010 11
-		{ "ld.uh     %%r%1$u,[%%r%2$u]",  "ld.uh     %%r%1$u,[%%r%2$u + 0x%4$x]" },   // 001 011 00
+		{ "ld.uh     %%r%1$u,[%%r%2$u]",  "xld.uh    %%r%1$u,[%%r%2$u + 0x%4$x]" },   // 001 011 00
 		{ "ld.uh     %%r%1$u,[%%r%2$u]+", nullptr                                },   // 001 011 01
 		{ "ld.w      %%r%1$u,%%r%2$u",    nullptr                                },   // 001 011 10
 		{ "sla       %%r%1$u,%3$u",       nullptr                                },   // 001 011 11
-		{ "ld.w      %%r%1$u,[%%r%2$u]",  "ld.w      %%r%1$u,[%%r%2$u + 0x%4$x]" },   // 001 100 00
+		{ "ld.w      %%r%1$u,[%%r%2$u]",  "xld.w     %%r%1$u,[%%r%2$u + 0x%4$x]" },   // 001 100 00
 		{ "ld.w      %%r%1$u,[%%r%2$u]+", nullptr                                },   // 001 100 01
-		{ "and       %%r%1$u,%%r%2$u",    nullptr                                },   // 001 100 10
+		{ "and       %%r%1$u,%%r%2$u",    "xand      %%r%1$u,%%r%2$u,0x%4$x"     },   // 001 100 10
 		{ "rr        %%r%1$u,%3$u",       nullptr                                },   // 001 100 11
-		{ "ld.b      [%%r%2$u],%%r%1$u",  "ld.b      [%%r%2$u + 0x%4$x],%%r%1$u" },   // 001 101 00
+		{ "ld.b      [%%r%2$u],%%r%1$u",  "xld.b     [%%r%2$u + 0x%4$x],%%r%1$u" },   // 001 101 00
 		{ "ld.b      [%%r%2$u]+,%%r%1$u", nullptr                                },   // 001 101 01
-		{ "or        %%r%1$u,%%r%2$u",    nullptr                                },   // 001 101 10
+		{ "or        %%r%1$u,%%r%2$u",    "xoor      %%r%1$u,%%r%2$u,0x%4$x"     },   // 001 101 10
 		{ "rl        %%r%1$u,%3$u",       nullptr                                },   // 001 101 11
-		{ "ld.h      [%%r%2$u],%%r%1$u",  "ld.h      [%%r%2$u + 0x%4$x],%%r%1$u" },   // 001 110 00
+		{ "ld.h      [%%r%2$u],%%r%1$u",  "xld.h     [%%r%2$u + 0x%4$x],%%r%1$u" },   // 001 110 00
 		{ "ld.h      [%%r%2$u]+,%%r%1$u", nullptr                                },   // 001 110 01
-		{ "xor       %%r%1$u,%%r%2$u",    nullptr                                },   // 001 110 10
+		{ "xor       %%r%1$u,%%r%2$u",    "xxor      %%r%1$u,%%r%2$u,0x%4$x"     },   // 001 110 10
 		{ nullptr,                        nullptr                                },
-		{ "ld.w      [%%r%2$u],%%r%1$u",  "ld.w      [%%r%2$u + 0x%4$x],%%r%1$u" },   // 001 111 00
+		{ "ld.w      [%%r%2$u],%%r%1$u",  "xld.w     [%%r%2$u + 0x%4$x],%%r%1$u" },   // 001 111 00
 		{ "ld.w      [%%r%2$u]+,%%r%1$u", nullptr                                },   // 001 111 01
 		{ "not       %%r%1$u,%%r%2$u",    nullptr                                },   // 001 111 10
 		{ nullptr,                        nullptr                                } };
@@ -188,23 +188,23 @@ std::pair<char const *, bool> class_1_ext_3[4] = {
 		{ "ext       %%r%1$u,srl,%2$u", false },
 		{ "ext       %%r%1$u,sll,%2$u", false } };
 
-std::pair<char const *, unsigned> const class_2_3_ops[16] = {
-		{ "ld.b      %%r%1$u,[%%sp + 0x%2$x]", 1 },   // 010 000
-		{ "ld.ub     %%r%1$u,[%%sp + 0x%2$x]", 1 },   // 010 001
-		{ "ld.h      %%r%1$u,[%%sp + 0x%2$x]", 2 },   // 010 010
-		{ "ld.uh     %%r%1$u,[%%sp + 0x%2$x]", 2 },   // 010 011
-		{ "ld.w      %%r%1$u,[%%sp + 0x%2$x]", 4 },   // 010 100
-		{ "ld.b      [%%sp + 0x%2$x],%%r%1$u", 1 },   // 010 101
-		{ "ld.h      [%%sp + 0x%2$x],%%r%1$u", 2 },   // 010 110
-		{ "ld.w      [%%sp + 0x%2$x],%%r%1$u", 4 },   // 010 111
-		{ "add       %%r%1$u,0x%2$x",          1 },   // 011 000
-		{ "sub       %%r%1$u,0x%2$x",          1 },   // 011 001
-		{ "cmp       %%r%1$u,%5$s0x%4$x",      1 },   // 011 010
-		{ "ld.w      %%r%1$u,%5$s0x%4$x",      1 },   // 011 011
-		{ "and       %%r%1$u,0x%3$x",          1 },   // 011 100
-		{ "or        %%r%1$u,0x%3$x",          1 },   // 011 101
-		{ "xor       %%r%1$u,0x%3$x",          1 },   // 011 110
-		{ "not       %%r%1$u,0x%3$x",          1 } }; // 011 111
+std::tuple<char const *, char const *, unsigned> const class_2_3_ops[16] = {
+		{ "ld.b      %%r%1$u,[%%sp + 0x%2$x]",  "xld.b     %%r%1$u,[%%sp + 0x%2$x]",1 },   // 010 000
+		{ "ld.ub     %%r%1$u,[%%sp + 0x%2$x]",  "xld.ub    %%r%1$u,[%%sp + 0x%2$x]",1 },   // 010 001
+		{ "ld.h      %%r%1$u,[%%sp + 0x%2$x]",  "xld.h     %%r%1$u,[%%sp + 0x%2$x]",2 },   // 010 010
+		{ "ld.uh     %%r%1$u,[%%sp + 0x%2$x]",  "xld.uh    %%r%1$u,[%%sp + 0x%2$x]",2 },   // 010 011
+		{ "ld.w      %%r%1$u,[%%sp + 0x%2$x]",  "xld.w     %%r%1$u,[%%sp + 0x%2$x]",4 },   // 010 100
+		{ "ld.b      [%%sp + 0x%2$x],%%r%1$u",  "xld.b     [%%sp + 0x%2$x],%%r%1$u",1 },   // 010 101
+		{ "ld.h      [%%sp + 0x%2$x],%%r%1$u",  "xld.h     [%%sp + 0x%2$x],%%r%1$u",2 },   // 010 110
+		{ "ld.w      [%%sp + 0x%2$x],%%r%1$u",  "xld.w     [%%sp + 0x%2$x],%%r%1$u",4 },   // 010 111
+		{ "add       %%r%1$u,0x%2$x",           "xadd      %%r%1$u,0x%2$x",         1 },   // 011 000
+		{ "sub       %%r%1$u,0x%2$x",           "xsub      %%r%1$u,0x%2$x",         1 },   // 011 001
+		{ "cmp       %%r%1$u,%5$s0x%4$x",       "xcmp      %%r%1$u,%5$s0x%4$x",     1 },   // 011 010
+		{ "ld.w      %%r%1$u,%5$s0x%4$x",       "xld.w     %%r%1$u,%5$s0x%4$x",     1 },   // 011 011
+		{ "and       %%r%1$u,0x%3$x",           "xand      %%r%1$u,0x%3$x",         1 },   // 011 100
+		{ "or        %%r%1$u,0x%3$x",           "xoor      %%r%1$u,0x%3$x",         1 },   // 011 101
+		{ "xor       %%r%1$u,0x%3$x",           "xxor      %%r%1$u,0x%3$x",         1 },   // 011 110
+		{ "not       %%r%1$u,0x%3$x",           "xnot      %%r%1$u,0x%3$x",         1 } }; // 011 111
 
 std::pair<char const *, bool> const class_4_ops[32] = {
 		{ nullptr,                     false },
@@ -249,19 +249,19 @@ std::tuple<char const *, char const *, unsigned, unsigned> const class_5_ops[32]
 		{ "ld.ub     %%r%1$u,%%r%2$u", nullptr,                             4, 0 },   // 101 001 01
 		{ "mltu.h    %%r%1$u,%%r%2$u", nullptr,                             4, 0 },   // 101 001 10
 		{ "mac1.h    %%r%1$u,%%r%2$u", nullptr,                             4, 0 },   // 101 001 11
-		{ "btst      [%%r%2$u],%1$u",  "btst      [%%r%2$u + 0x%3$x],%1$u", 3, 0 },   // 101 010 00
+		{ "btst      [%%r%2$u],%1$u",  "xbtst     [%%r%2$u + 0x%3$x],%1$u", 3, 0 },   // 101 010 00
 		{ "ld.h      %%r%1$u,%%r%2$u", nullptr,                             4, 0 },   // 101 010 01
 		{ "mlt.w     %%r%1$u,%%r%2$u", nullptr,                             4, 0 },   // 101 010 10
 		{ "mac1.hw   %%r%1$u,%%r%2$u", nullptr,                             4, 0 },   // 101 010 11
-		{ "bclr      [%%r%2$u],%1$u",  "bclr      [%%r%2$u + 0x%3$x],%1$u", 3, 0 },   // 101 011 00
+		{ "bclr      [%%r%2$u],%1$u",  "xbclr     [%%r%2$u + 0x%3$x],%1$u", 3, 0 },   // 101 011 00
 		{ "ld.uh     %%r%1$u,%%r%2$u", nullptr,                             4, 0 },   // 101 011 01
 		{ "mltu.w    %%r%1$u,%%r%2$u", nullptr,                             4, 0 },   // 101 011 10
 		{ nullptr,                     nullptr,                             0, 0 },
-		{ "bset      [%%r%2$u],%1$u",  "bset      [%%r%2$u + 0x%3$x],%1$u", 3, 0 },   // 101 100 00
+		{ "bset      [%%r%2$u],%1$u",  "xbset     [%%r%2$u + 0x%3$x],%1$u", 3, 0 },   // 101 100 00
 		{ "ld.c      %%r%1$u,0x%2$x",  nullptr,                             4, 0 },   // 101 100 01
 		{ "mac       %%r%2$u",         nullptr,                             0, 0 },   // 101 100 10
 		{ "mac1.w    %%r%1$u,%%r%2$u", nullptr,                             4, 0 },   // 101 100 11
-		{ "bnot      [%%r%2$u],%1$u",  "bnot      [%%r%2$u + 0x%3$x],%1$u", 3, 0 },   // 101 101 00
+		{ "bnot      [%%r%2$u],%1$u",  "xbnot     [%%r%2$u + 0x%3$x],%1$u", 3, 0 },   // 101 101 00
 		{ "ld.c      0x%2$x,%%r%1$u",  nullptr,                             4, 0 },   // 101 101 01
 		{ "sat.h     %%r%1$u,%%r%2$u", nullptr,                             4, 0 },   // 101 101 10
 		{ "sat.uh    %%r%1$u,%%r%2$u", nullptr,                             4, 0 },   // 101 101 11
@@ -274,15 +274,15 @@ std::tuple<char const *, char const *, unsigned, unsigned> const class_5_ops[32]
 		{ "sat.uw    %%r%1$u,%%r%2$u", nullptr,                             4, 0 },   // 101 111 10
 		{ nullptr,                     nullptr,                             0, 0 } };
 
-std::pair<char const *, unsigned> const class_7_ops[8] = {
-		{ "ld.b      %%r%1$u,[%%dp + 0x%2$x]", 1 },   // 111 000
-		{ "ld.ub     %%r%1$u,[%%dp + 0x%2$x]", 1 },   // 111 001
-		{ "ld.h      %%r%1$u,[%%dp + 0x%2$x]", 2 },   // 111 010
-		{ "ld.uh     %%r%1$u,[%%dp + 0x%2$x]", 2 },   // 111 011
-		{ "ld.w      %%r%1$u,[%%dp + 0x%2$x]", 4 },   // 111 100
-		{ "ld.b      [%%dp + 0x%2$x],%%r%1$u", 1 },   // 111 101
-		{ "ld.h      [%%dp + 0x%2$x],%%r%1$u", 2 },   // 111 110
-		{ "ld.w      [%%dp + 0x%2$x],%%r%1$u", 4 } }; // 111 111
+std::tuple<char const *, char const *, unsigned> const class_7_ops[8] = {
+		{ "ld.b      %%r%1$u,[%%dp + 0x%2$x]", "xld.b     %%r%1$u,[%%dp + 0x%2$x]", 1 },   // 111 000
+		{ "ld.ub     %%r%1$u,[%%dp + 0x%2$x]", "xld.ub    %%r%1$u,[%%dp + 0x%2$x]", 1 },   // 111 001
+		{ "ld.h      %%r%1$u,[%%dp + 0x%2$x]", "xld.h     %%r%1$u,[%%dp + 0x%2$x]", 2 },   // 111 010
+		{ "ld.uh     %%r%1$u,[%%dp + 0x%2$x]", "xld.uh    %%r%1$u,[%%dp + 0x%2$x]", 2 },   // 111 011
+		{ "ld.w      %%r%1$u,[%%dp + 0x%2$x]", "xld.w     %%r%1$u,[%%dp + 0x%2$x]", 4 },   // 111 100
+		{ "ld.b      [%%dp + 0x%2$x],%%r%1$u", "xld.b     [%%dp + 0x%2$x],%%r%1$u", 1 },   // 111 101
+		{ "ld.h      [%%dp + 0x%2$x],%%r%1$u", "xld.h     [%%dp + 0x%2$x],%%r%1$u", 2 },   // 111 110
+		{ "ld.w      [%%dp + 0x%2$x],%%r%1$u", "xld.w     [%%dp + 0x%2$x],%%r%1$u", 4 } }; // 111 111
 
 } // anonymous namespace
 
@@ -405,7 +405,8 @@ offs_t c33_disassembler::dasm_class_0(std::ostream &stream, offs_t pc, u16 op, u
 			else if (1 == ext_count)
 				imm = util::sext(imm, 22);
 
-			util::stream_format(stream, class_0_jumps[BIT(op, 9, 4)], BIT(op, 8) ? ".d" : "  ", pc + (ext_count * 2) + imm);
+			auto const [inst, inst_ext] = class_0_jumps[BIT(op, 9, 5)];
+			util::stream_format(stream, ext_count ? inst_ext : inst, BIT(op, 8) ? ".d" : "  ", pc + (ext_count * 2) + imm);
 			return 2 + (ext_count * 2);
 		}
 	}
@@ -475,7 +476,7 @@ offs_t c33_disassembler::dasm_class_1(std::ostream &stream, u16 op, u32 ext_imm,
 
 offs_t c33_disassembler::dasm_class_2_3(std::ostream &stream, u16 op, u32 ext_imm, unsigned ext_count) const
 {
-	auto const [inst, mul] = class_2_3_ops[BIT(op, 10, 4)];
+	auto const [inst, inst_ext, mul] = class_2_3_ops[BIT(op, 10, 4)];
 
 	u8 const reg = BIT(op, 0, 4);
 	u32 imm = (ext_imm << 6) | BIT(op, 4, 6);
@@ -488,7 +489,7 @@ offs_t c33_disassembler::dasm_class_2_3(std::ostream &stream, u16 op, u32 ext_im
 		simm *= mul;
 		abs *= mul;
 	}
-	util::stream_format(stream, inst, reg, imm, simm, abs, sign);
+	util::stream_format(stream, ext_count ? inst_ext : inst, reg, imm, simm, abs, sign);
 	return 2 + (ext_count * 2);
 }
 
@@ -576,13 +577,13 @@ offs_t c33_disassembler::dasm_class_6(std::ostream &stream, u16 op, u32 ext_imm,
 
 offs_t c33_disassembler::dasm_class_7(std::ostream &stream, u16 op, u32 ext_imm, unsigned ext_count) const
 {
-	auto const [inst, mul] = class_7_ops[BIT(op, 10, 3)];
+	auto const [inst, inst_ext, mul] = class_7_ops[BIT(op, 10, 3)];
 
 	u8 const reg = BIT(op, 0, 4);
 	u32 imm = (ext_imm << 6) | BIT(op, 4, 6);
 	if (!ext_count)
 		imm *= mul;
-	util::stream_format(stream, inst, reg, imm);
+	util::stream_format(stream, ext_count ? inst_ext : inst, reg, imm);
 	return 2 + (ext_count * 2);
 }