If you have a TI-Graph Link and DOS or Windows: 1.Download and unzip romdump2.zip. 2.Send rom83.83p (included with romdump2.zip) to your TI-83. 3.Link your TI-83 to your computer. 4.Run romdump.exe (included with romdump2.zip) on your computer. 5.Run the ROM dumper on your calculator. Your TI-83's ROM will be dumped to a file on your computer. If you have a homemade serial link and DOS or Windows: 1.Download and unzip romdump2.zip. 2.Download and unzip getrom8x.zip. 3.Send rom83.83p (included with romdump2.zip) to your TI-83. 4.Link your TI-83 to your computer. 5.Read readme.txt (included with getrom8x.zip) for information on how to run getrom8x.exe. 6.Run getrom8x.exe (included with getrom8x.zip) on your computer. 7.Run the ROM dumper on your calculator. Your TI-83's ROM will be dumped to a file on your computer. If you have a homemade parallel link and DOS or Windows: 1.Download and unzip romdump2.zip. 2.Download and unzip dumpxp.zip. 3.Send rom83.83p (included with romdump2.zip) to your TI-83. 4.Link your TI-83 to your computer. 5.Read readme.txt (included with dumpxp.zip) for information on how to run dumpxp.exe. 6.Run dumpxp.exe (included with dumpxp.zip) on your computer. 7.Run the ROM dumper on your calculator. Your TI-83's ROM will be dumped to a file on your computer. The correct file size for a TI-83 ROM image is 262,144 bytes.