Repair docs typos

readme.md

@@ -23,8 +23,8 @@ This is intended to simulate an LED-blinky by _toggling_ between _ON_ and _OFF_.
 
 The blinky _ON_/_OFF_ timebase is derived from a $1s$ tick,
 resulting in a toggle-frequency of ${\sim}{\frac{1}{2}}Hz$.
-The underlying 32-bit timer resides on ports `0x41`-`0x44`,
-where the lower byte at port `0x41` is used.
+The underlying 32-bit timer resides on ports `0x45`-`0x48`,
+where the lower byte at port `0x45` is used.
 This timer is only available on the TI-84, not the TI-83.
 
 The blinky _ON_/_OFF_ text messages are printed
@@ -104,8 +104,8 @@ the [license](./LICENSE) details.
 
 Some of this software has been reverse engineered
 from other projects or terse technical notes.
-In addition, the software writes to calculator `ports`,
-such as ports `0x40` and `0x41`.
+In addition, the software actively writes to calculator
+_ports_, such as port `0x40` and port `0x41`.
 
 Personally. I do not consider this to be a $100\\%$ sound basis
 for project reliability and/or stability.