ChisFlash v1.1 Celebi Flash 1M/RTC

ChisFlash version introduction for supporting Flash 1M save file type:
ChisFlash V1.1 (Celebi) uses 256Mbit Flash and 1Mbit Flash to adapt GBA games with save file types such as Flash 1M and Flash 512, and supports burning to NDS and GBcartRW.
Important Notes:
When making the PCB, please ensure the thickness is 0.8mm.
Currently in beta testing, the firmware needs to be obtained from the QQ group. After beta testing, the firmware code will be open-sourced on GitHub.
Regarding firmware arrangements
 : 1. Due to rate limiting considerations, the RTC firmware is not fully open. EPM240 chips with firmware will be provided by group members at near cost price. The group has a large inventory of S-3511A RTC chips, so there's no need to worry about unscrupulous merchants inflating prices.
 2. The Flash1M firmware is in the group files, supporting a perfect save patch and crossover (FireRed and LeafGreen are available).
Regarding Flash512:
 ChisFlash's proprietary perfect save patch allows Flash1M cartridges to also support Flash512 save-type games.
Learn more about
the GitHub project address, which will include firmware source code and GBA cartridge principle analysis (to be uploaded): https://github.com/ChisBread/ChisFlash.
QQ group: 771688226.
For project progress, self-made tutorials, material pitfalls, black gold PCB material card group buying (voluntary group buying, no profit), and finished product exchange and display, please go to the QQ group.
 
Product showcase
video demonstration
[[ChisFlash] You can use a 2u gold-plated flashcart under 30 yuan? The first batch of DIY all-purpose GBA flashcarts has already left - Bilibili] https://b23.tv/K90WHhc
 
 
 
Thanks to
@mori for the excellent schematic design and layout,
@白橙 for the silkscreen design
, and all the players who selflessly contributed to the GBA, let us permanently preserve our childhood in the memories of the internet!