updated readme

.github/FUNDING.yml

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-ko_fi: polprzewodnikowy

README.md

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-
 # SC64 - an open source Nintendo 64 flashcart
 
 
-## High-level block diagram
+## Features
+ - 64 MB SDRAM memory for game and save data
+ - 16 MB FLASH memory for bootloader and extended game data
+ - 8 kB on-chip buffer for general use
+ - 25 MB/s peak transfer rate USB interface for data upload/download and debug functionality
+ - 25 MB/s peak transfer rate SD card interface
+ - EEPROM, SRAM and FlashRAM save types ~~with automatic writeback to SD card~~ (_not implemented yet_)
+ - Battery backed real time clock (RTC)
+ - Status LED and button for general use
+ - 64DD add-on emulation
+ - IS-Viewer 64 debug interface
+ - Software and firmware update via USB interface
+ - N64 bootloader with support for IPL2 registers spoofing and loading menu from SD card
+ - Enhanced [UltraCIC_C](https://github.com/jago85/UltraCIC_C) emulation with automatic region switching and programmable seed/checksum values
+ - PC app for communicating with flashcart (game/save data upload/download, feature enable control and debug console)
+ - [UNFLoader](https://github.com/buu342/N64-UNFLoader) support
+
+
+## High-level flashcart block diagram
 
 [<img src=".github/sc64_v2_block_diagram.svg" width="800" />](.github/sc64_v2_block_diagram.svg)
 
 
 ## Finished sample
 
-[<img src=".github/sc64_v2_top.jpg" alt="SC64 HW ver: 2.0 PCB top" width="800" />](.github/sc64_v2_top.jpg)
-
-[<img src=".github/sc64_v2_bottom.jpg" alt="SC64 HW ver: 2.0 PCB bottom" width="800" />](.github/sc64_v2_bottom.jpg)
+[<img src=".github/sc64_v2_example.jpg" alt="SC64 HW ver: 2.0" width="800" />](.github/sc64_v2_example.jpg)