Grammar and format fix for README

README.md

@@ -65,9 +65,9 @@ Also, the Arduino must either be powered on first or have no bootloader present
     Choose your hardware!
     You must uncomment the line that corresponds to your cips.
     
- 2 main branches available:
-  - ATmega based > easy to use, fast and nice features for development
-  - ATtiny based > less features, internal clock has 10% variation
+ 2 main branches are available:
+  - ATmega based: easy to use, fast and nice features for development
+  - ATtiny based: fewer features, internal clock has 10% variation
 
  This code is multi-region, meaning it will unlock PAL, NTSC-U and NTSC-J machines.
 
@@ -87,46 +87,46 @@ Also, the Arduino must either be powered on first or have no bootloader present
       pin 5             = BIOS D2      IC102.Pin-15   = D2
       pin 4             = BIOS A18     Ic102.Pin-31   = A18
       Pin-Gnd  = GND    = gnd          GND            = gnd
-------------------------------------------------
-                 General info!
---------------------------------------------------
-PLAYSTATION 1 SECURITY - HOW IT DOES IT'S THING:
-Sony didn't really go through great lenghts to protect it's precious Playstation
-from running unauthorised software; the main security is based on a simple ASCII
+
+## General Info
+
+### PLAYSTATION 1 SECURITY - HOW IT DOES ITS THING:
+Sony didn't really go through great lenghts to protect its precious Playstation
+from running unauthorised software: the main security is based on a simple ASCII
 string of text that is read from a part of an original Playstation disc that cannot
 be reproduced by an ordinary PC CD burner.
 As most of you will know, a CD is basically a very long rolled up (carrier) string in which very
 little pits and ehm... little not-pits are embedded that represent the data stored on the disc.
 The nifty Sony engineers did not use the pits and stuff to store the security checks for
-Playstation discs but went crazy with the rolled up carrier string. In an ordinary CD, the
+Playstation discs, but went crazy with the rolled up carrier string. In an ordinary CD, the
 string is rolled up so that the spacing between the tracks is as equal as possible. If that
 is not the case, the laser itself needs to move a bit to keep track of the track and
 reliably read the data off the disc.
 If you wonder how the laser knows when it follows the track optimally: four photodiodes, light
 intensity measurement, difference measurements, servo. There.
 To the point: the Sony engineers decidedly "fumbled up" the track of sector 4 on a Playstation
-disc (the track was modulated in nerd-speak) so that the error correction circuit outputs a
+disc (the track was modulated, in nerd-speak) so that the error correction circuit outputs a
 recognisable signal, as the laser needs to be corrected to follow the track optimally.
 This output signal actually is a 250bps serial bitstream (with 1 start bit and 2 stop bits) which
-in plain ASCII says SCEA (Sony Computer Entertainment of America), SCEE (Sony Computer Entertainment
-of Europe) or SCEI (Sony Computer Entertainment of Japan), depending on the region of the disc inserted.
+in plain ASCII says *SCEA* (Sony Computer Entertainment of America), *SCEE* (Sony Computer Entertainment
+of Europe) or *SCEI* (Sony Computer Entertainment of Japan), depending on the region of the disc inserted.
 The security thus functions not only as copy protection, but also as region protection.
 The text string from the disc is compared with the text string that is embedded in the Playstation
 hardware. When these text strings are the same, the disc is interpreted to be authentic and from
 the correct region. Bingo!
 
-The The master branch is completely redesigned!
+### The master branch is completely redesigned!
 
-
-The original doesn't have a mechanism to turn the injections off. It bases everything on a timer.
+The original code doesn't have a mechanism to turn the injections off. It bases everything on a timer.
 After power on, it will start sending injections for some time, then turns off.
 It also doesn't know when it's required to turn on again (except for after a reset), so it gets detected by anti-mod games.
 
-That mechanism to know when to inject and when to turn it off. This is the 2 wires for SUBQ / SQCK. The PSX transmits the current subchannel Q data on this bus. It tells the console where on the disk the read head is. We know that the protection symbols only exist on the earliest sectors, and that anti-mod games exploit this by looking for the symbols elsewhere on the disk. (If they get those symbols, a modchip must be generating them.) So with that information, my code knows when the PSX wants to see the unlock symbols, and when it's "fake" / anti-mod. The chip is continously looking at that subcode bus, don't need the reset wire or any other timing hints that other modchips use. That makes it compatible and fully functional with all revisions of the PSX, not just the later ones. Also with this method, the chip knows more about the current CD. This allows it to not send unlock symbols for a music CD > The BIOS starts right into the CD player, instead of after a long delay with other modchips.
+### The mechanism to know when to inject and when to turn it off.
 
-This has some drawbacks though.
-It's more logic / code. More things to go wrong. The testing done so far suggests it's working fine though.
-It's not a good example anymore to demonstrate PSX security and how modchips work.
+This is the 2 wires for SUBQ / SQCK. The PSX transmits the current subchannel Q data on this bus. It tells the console where on the disk the read head is. We know that the protection symbols only exist on the earliest sectors, and that anti-mod games exploit this by looking for the symbols elsewhere on the disk. If they get those symbols, a modchip must be generating them!
 
+So with that information, my code knows when the PSX wants to see the unlock symbols, and when it's "fake" / anti-mod. The chip is continously looking at that subcode bus, so you don't need the reset wire or any other timing hints that other modchips use. That makes it compatible and fully functional with all revisions of the PSX, not just the later ones. Also with this method, the chip knows more about the current CD. This allows it to not send unlock symbols for a music CD, which means the BIOS starts right into the CD player, instead of after a long delay with other modchips.
 
- 
+This has some drawbacks, though:
+ * It's more logic / code. More things to go wrong. The testing done so far suggests it's working fine though.
+ * It's not a good example anymore to demonstrate PSX security, and how modchips work in general.