new flash ic replace

[fabio14789]

(01.09.2026 20:19)megavolt85 писал(а):  

(30.08.2026 20:13)fabio14789 писал(а):  I'm using a TL866CS... I programmed it using the default starting address... do I need to program it starting from a specific line?

dreamcast use second part of flash memory.
for write via programmer you need 128KB FF's and dcus_ntsc.bin at end dump

I programmed and reprogrammed it so many times—soldering and desoldering the chip from the board—that the Dreamcast board started getting fragile.
On the last attempt, I flashed the file twice—filling the chip from start to finish—and the PCB traces apparently started lifting.
I'll try to put myself through the torture again another day, hahaha.