Main ROM Replacement
Advanced BASIC ROM Replacement Mode (OPTIONAL)
*** this functionality is beta currently. It will be fully supported in the near future, stay tuned ***
For users with the do-it-yourself spirit, an optional feature of REX can be enabled.
With a single wire soldered in place, REX permits BASIC ROM replacement!
This means that you can disable the built-in BASIC/TEXT/TELCOM ROM on your motherboard and replace it with a specific block of REX flash memory. Typically, this will be the same BASIC/TEXT/TELCOM ROM image we know and love, with a few changes. So, you can upgrade your Model T with little tweaks like Y2K, the lomem patch, new character sets, put your name on the main menu, etc.