--- uae/src/gencpu.c	2018/04/24 16:39:48	1.1.1.3
+++ uae/src/gencpu.c	2018/04/24 16:40:46	1.1.1.4
@@ -1170,7 +1170,7 @@ static void gen_opcode(unsigned long int
 	 * weird things... */
      case i_MVPRM:
 	genamode (table68k[opcode].smode, "srcreg", table68k[opcode].size, "src", 1, 0);
-	printf ("\tuaecptr memp = m68k_areg(regs, dstreg) + %s;\n", gen_nextiword());
+	printf ("\tuaecptr memp = m68k_areg(regs, dstreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword());
 	if (table68k[opcode].size == sz_word) {
 	    printf ("\tput_byte(memp, src >> 8); put_byte(memp + 2, src);\n");
 	} else {
@@ -1179,7 +1179,7 @@ static void gen_opcode(unsigned long int
 	}
 	break;
      case i_MVPMR:
-	printf ("\tuaecptr memp = m68k_areg(regs, srcreg) + %s;\n", gen_nextiword());
+	printf ("\tuaecptr memp = m68k_areg(regs, srcreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword());
 	genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "dst", 2, 0);
 	if (table68k[opcode].size == sz_word) {
 	    printf ("\tuae_u16 val = (get_byte(memp) << 8) + get_byte(memp + 2);\n");