notes:flashcart:ds_linker
Table of Contents
DSFlash2 (DS Linker, N-Card et al.) programming
Flash chips
Known types:
- Hynix HY27UF081G2M - Samsung K9G8G08U0M
Commands
TODO: Figure out card timings. (Are all of them stored in RAM?)
??? (00 08 aa bb 00 00 00 00)
- aabb - 000 ~ 7FE, in increments of 2
??? (66 00 00 00 00 00 00 00)
??? (86 00 00 00 00 00 00 00)
??? (87 08 aa bb ?? ?? ?? ??)
- aabb - 000 ~ 7FF
??? (C1 ?? ?? 00 00 00 00 00)
NAND: Read other pins (C2 00 00 00 00 00 00 00)
Returns 4 bytes - repeated byte containing:
- bits 0-6: ? - bit 7: READY/BUSY OUTPUT pin?
NAND: Read I/O pins 0-7 (D0 00 00 00 00 00 00 00)
Returns 4 bytes - repeated byte containing bits 0-7 on the I/O pins. Used for reading the status rgister.
NAND: Send command (D1 ?? ?? ?? ?? ?? ?? ??)
TODO
NAND: Read page (D2 aa bb cc dd 00 00 00)
- aabbccdd: Address (MSB to LSB)
Returns 512 bytes.
NAND: Write page (D3 00 FF FF FF FF FF pp)
Expects 512 bytes.
- pp: First byte of page (second byte onwards follow)
notes/flashcart/ds_linker.txt · Last modified: 2024/11/06 20:24 by asie