Even more documentation massaging

info.yaml

@@ -144,7 +144,7 @@ documentation:
       
 
       The data bus of the SN76489 chip has to be connected to microcontroller and receive a regular stream of commands.
-      The SN76489 produces audio output and has to be connected to a speaker. There are several ways how overall schematics can be established.
+      The SN76489 produces audio output and has to be connected to a speaker. There are several ways how the overall schematics can be established.
 
       ___8-bit parallel output via DAC___ One option is to connect off the shelf data parallel Digital to Analog Converter (DAC)
       for example [Digilent R2R Pmod](https://digilent.com/reference/pmod/pmodr2r/start) to the output pins and
@@ -251,15 +251,15 @@ documentation:
       Hold **/WE** low once data bus pins are set to the desired values.
       Pull **/WE** high again before setting different value on the data bus.
 
-      ```10001100```    Set **channel #0** tone 4 low bits to **$C_{hex} = 1100_{bin}$**
+      ```10001100```    Set **channel #0** tone 4 low bits to $C_{hex} = 1100_{bin}$
 
-      ```00010001```    Set **channel #0** tone 6 high bits to **$11_{hex} = 10001_{bin}$**
+      ```00010001```    Set **channel #0** tone 6 high bits to $11_{hex} = 010001_{bin}$
 
-      ```10010000```    Set **channel #0** volume to 100% (attenuation = **0**)
+      ```10010000```    Set **channel #0** volume to **100%**, attenuation 4-bits are $0_{dec} = 0000_{bin}$
 
       ```11100100```    Set **channel #3** noise type to **white** and divider to **512**
 
-      ```11111000```    Set **channel #3** noise volume to 50% (attenuation = **8**)
+      ```11111000```    Set **channel #3** noise volume to **50%**, attenuation 4-bits are $8_{dec} = 1000_{bin}$
 
       ```
       Timing diagram
@@ -306,7 +306,7 @@ documentation:
       | 1    |    0 | $clock_{frequency} / (256_{cycles} * note_{frequency})$      |
 
 
-      **Example music recorded from the chip simulation**
+      **Some examples of music recorded from the chip simulation**
 
       - [https://www.youtube.com/watch?v=ghBGasckpSY](Crazee Rider BBC Micro game)
       - [https://www.youtube.com/watch?v=HXLAdA02I-w](MISSION76496 tune for Sega Master System)