|This port only exists as a distinct port on the TI-83 Plus Silver Edition, the TI-84 Plus, and the TI-84 Plus Silver Edition. On the standard TI-83 Plus, it acts as a shadow of port 02.|
|This port is protected, which means user programs cannot ordinarily write to it directly.|
Port Number: 22h
Function: Flash Execution Lower Limit
This port controls the first of two flash page execution limits.
- [00h - FFh]: Flash Pages below this value have execution permission. This is always set to 08 in TIOS.
- [00h - FFh]: The new execution limit. You must enable flash access through port 14 first.
If port 23h is less than 22h, 22h takes precedence; that is, all pages will be executable.