Hello,
Case 1 : OK case, it takes under 30 sec. to connect debug mode. At that time, it can be sent 1,514byte fragment.
Case 2 : NG case, it takes over 120sec. to connect debug mode. At that time, it is sent xxKbyte at one time. so there's no response ACK from Emunlator.
Yes, it can be reproducible issue, but it depends on some PC(XP version). Some PC can be reproduced, but some PC works normally.
Could you give me more idea to improve it? it's difficult to find solution as you recommeded link.