i rote code for weigh scale the code is working when using parallel port programar and when i am using tl886 usb programmer its not working at all can i no what is the proble going on
AT89C51Rc or AT89C55Wd or SSt89E516RD
WE want change in coding
those do not have USB programming caoability
when i am loading small program its working when i am loading more then 20k hex file capacity its not working that time how its working without usb programming capability
Ok, so why don't you cross-check what bytes each programmer places in memory, ie write with one programmer, verify/checksum with the other. Understand what is stopping the code from running.
If you suspect the programmer isn't doing what it is supposed too, take it up with the vendor.