diff --git a/src/devices/cpu/e132xs/e132xsdrc.cpp b/src/devices/cpu/e132xs/e132xsdrc.cpp
index 11ce21cb77c..5e51771e91f 100644
--- a/src/devices/cpu/e132xs/e132xsdrc.cpp
+++ b/src/devices/cpu/e132xs/e132xsdrc.cpp
@@ -86,10 +86,12 @@ static void cfunc_update_timer_prescale(void *param)
 	((hyperstone_device *)param)->update_timer_prescale();
 }
 
+/*
 static void cfunc_print(void *param)
 {
 	((hyperstone_device *)param)->ccfunc_print();
 }
+*/
 
 /*-------------------------------------------------
     ccfunc_total_cycles - compute the total number
diff --git a/src/devices/cpu/e132xs/e132xsdrc_ops.hxx b/src/devices/cpu/e132xs/e132xsdrc_ops.hxx
index fe3ed4312cf..c70c234140e 100644
--- a/src/devices/cpu/e132xs/e132xsdrc_ops.hxx
+++ b/src/devices/cpu/e132xs/e132xsdrc_ops.hxx
@@ -282,22 +282,18 @@ void hyperstone_device::generate_movd(drcuml_block *block, compiler_state *compi
 		}
 		else
 		{
-			UML_ROLAND(block, I2, DRC_SR, 7, 0x7f);
-			UML_ADD(block, I3, I2, src_code);
+			UML_ROLAND(block, I5, DRC_SR, 7, 0x7f);
+			UML_ADD(block, I3, I5, src_code);
 			UML_AND(block, I4, I3, 0x3f);
 			UML_LOAD(block, I2, (void *)m_local_regs, I4, SIZE_DWORD, SCALE_x4);
 
-			UML_ADD(block, I6, I2, srcf_code);
+			UML_ADD(block, I6, I5, srcf_code);
 			UML_AND(block, I5, I6, 0x3f);
 			UML_LOAD(block, I3, (void *)m_local_regs, I5, SIZE_DWORD, SCALE_x4);
 		}
 
 		UML_AND(block, DRC_PC, I2, ~1);
 
-		UML_MOV(block, mem(&m_drc_arg0), (uint32_t)'0');
-		UML_MOV(block, mem(&m_drc_arg1), I2);
-		UML_CALLC(block, cfunc_print, this);
-
 		UML_AND(block, DRC_SR, I3, 0xffe3ffff);
 		UML_ROLINS(block, DRC_SR, I2, S_SHIFT, S_MASK);
 
@@ -1092,7 +1088,7 @@ void hyperstone_device::generate_movi(drcuml_block *block, compiler_state *compi
 		UML_MOV(block, I5, I1);
 		generate_set_global_register(block, compiler, desc);
 
-		UML_TEST(block, I0, 0xf0);
+		UML_TEST(block, op, 0xf0);
 		UML_JMPc(block, uml::COND_NZ, done);
 		UML_AND(block, DRC_SR, DRC_SR, ~M_MASK);
 		generate_delay_slot_and_branch(block, compiler, desc);
@@ -1855,7 +1851,7 @@ void hyperstone_device::generate_frame(drcuml_block *block, compiler_state *comp
 	UML_LABEL(block, diff_in_range);
 
 	UML_CMP(block, I0, mem(&UB));
-	UML_SETc(block, uml::COND_GE, I4);
+	UML_SETc(block, uml::COND_AE, I4);
 	UML_CMP(block, I3, 0);
 	UML_JMPc(block, uml::COND_GE, done);
 
@@ -1866,9 +1862,12 @@ void hyperstone_device::generate_frame(drcuml_block *block, compiler_state *comp
 	UML_CALLH(block, *m_mem_write32);
 	UML_ADD(block, I0, I0, 4);
 	UML_ADD(block, I3, I3, 1);
+
 	UML_TEST(block, I3, ~0);
 	UML_JMPc(block, uml::COND_NZ, push_next);
 
+	UML_MOV(block, mem(&SP), I0);
+
 	UML_TEST(block, I4, ~0);
 	UML_EXHc(block, uml::COND_NZ, *m_exception[EXCEPTION_FRAME_ERROR], 0);