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Table of Contents
EZ-Flash V programming
Commands
SRAM: Read byte (B7 01 aa aa aa 00 00 00)
Returns four bytes; the first byte is the read byte.
?? (B8 F2 00 00 nn 00 00 00)
- nn = 00 ~ A2 (in increments of 2)
?? Write ASIC register ?? (B8 F4 ?? ?? ?? ?? ?? ??)
- B8,F4,01,00,55,AA,55,00
- B8,F4,02,06,55,AA,55,AA
- B8,F4,01,04,55,AA,55,00
These may influence the behaviour of command B7.
- B8,F4,03,03,55,AA,55,AA
In this mode, it appears that command B7 acts differently:
- First, B7aaaaaaaa010000 is sent (prefetch?) - returns 4 bytes. The final byte may be FF or 00 - if it's 00, prefetch is complete.
- Next, if prefetch was not complete, B7aaaaaaaa020000 is sent repeatedly - returns 4 bytes, same format as above.
- Then, B7aaaaaaaa000000 is issued as normal.
It appears the cartridge runs a self-test of some kind for this?
TF: Write data (B8 F6 Fa Fb Fc Fd 00 00)
TF: Start data write (B8 F6 FF FF FF F0 00 00)
ab cd - bytes to write (sent as nibbles)
TF: Read 512 bytes (B8 F7 00 00 00 00 00 00)
TF: Read command byte? (B8 F8 00 00 00 00 00 00)
TF: Send command (B8 FA 00 cc pp pp pp pp)
TF: Read response (B8 FA nn 00 00 00 00 00)
nn - page to read (1-5).
?? Unlock ?? (B9 FF 55 AA 00 00 00 00)
?? Lock ?? (B9 FF A5 5A 00 00 00 00)
SRAM
- 0x7DFE0 - 1 if high-capacity TF card, 0 otherwise