update readme

README.md

@@ -1,14 +1,39 @@
 ## Dendy
-Another Dendy (Famicom) clone
+Yet another Dendy (Famicom) clone - 8-bit home video game console
 
-[![photo](images/thumb.1.webp)](images/1.webp?raw=true)
+[![photo](images/thumb.revA.webp)](images/revA.webp?raw=true)
+[![photo](images/thumb.revB.webp)](images/revB.webp?raw=true)
 
+[(more random photos there)](https://cloud.err200.net/index.php/s/73TR85tYZkMm8Ax?path=%2Fdendy)
 
+- PCB optimized for NewGame's case
+- Almost all components is DIP (THT)
+- 9-12V DC power supply with any polarity
+- Step-down switching regulator
+- PNP+NPN transistors-based video amplifier
+- OpAmp-based audio mixer/amplifier
+- Two switchable quartz crystals (PAL+NTSC)
 
 ### Changelog & current status
-* Rev.A - first release
+* Rev.A - first release. Please note the [errata](pcb/rev.A/ERRATA.txt)
+* Rev.B:
+    - Reworked crystal generator circuit
+    - Tuned pcb's dimensions and holes placement for better compatibility with enclosures
+    - Various minor changes and improvements
+* Rev.B1:
+    - Power switch moved up to 0.5mm
+    - Various minor changes and improvements
 
-### Related projects
+### Credits
-I want to express my appreciation to the authors of the following projects, which served as inspiration and as reference for my development:
+I want to express my appreciation to the
+ - megawalkman
+ - HardWareMan
+ - lm2000
+ - HotPixel
 
-[https://github.com/mleonid2000/dendy_junior_remastered](https://github.com/mleonid2000/dendy_junior_remastered) - Dendy Junior Remastered by lm2000
+authors of the following projects, which served as inspiration and as reference for my development:
+
+- https://www.emu-land.net/forum/index.php/topic,75737.0.html - Dendy Classic/Junior Steepler Remake
+- https://www.emu-land.net/forum/index.php/topic,78815.0.html - Dendy Junior Remastered
+- https://github.com/mleonid2000/dendy_junior_remastered - Dendy Junior Remastered
+- https://github.com/HotPixelChannel/Candy_8bit - Candy 8bit system