Fix error with RETI instruction

The stack pointer was not updated correctly.

Error reported and fixed by Anthony (antliu at gmail.com).

diff --git a/src/opcode2c.pl b/src/opcode2c.pl
index 0b11438..29c1c41 100755 (executable)
--- a/src/opcode2c.pl
+++ b/src/opcode2c.pl
@@ -483,6 +483,7 @@ for ($i=0 ; $i< 256; $i++) {
            print INST_IMP "unsigned char SP = cpu8051_ReadD( _SP_ );\n";
            print INST_IMP "cpu8051.pc = ( cpu8051_ReadI( SP-- ) << 8 );\n";
            print INST_IMP "cpu8051.pc += cpu8051_ReadI( SP-- );\n";
+           print INST_IMP "cpu8051_WriteD( _SP_, SP );\n";
        }
 
        # RLC