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License: GNU General Public License v3.0
Arduino/AVR based Playstation 1 SIO(SPI) peripheral device.
License: GNU General Public License v3.0
SPM_PAGESIZE varies between platforms; 328p = 128, 2560 = 256.
Memory is currently read byte per byte, but no such functionality exists for writes, instead writes are per page. On the 328p this is straightforward as page sizes match the PS1 memory card at 128bytes per frame. The 2560 would require a more advanced scheme.
A page buffer could be used, assuming that each sector write would occur in sequential order.
In the event of a timeout or non-sequential write, one part of the buffer is filled with the missing frame, written, and committed, repeat for other frame? Store address for both frames etc.
Read code must also be adapted for address space beyond 64Kb:
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Maximum array sizes are 0x7FFF, need to split data between const arrays and align with page sizes.
Directory entries for blocks outside of the writable range are not being prevented. Test data currently provides empty directory entries. For 328p, need to prevent writing Block 0 Frames 4-15. Mega 2560 will support a full card image.
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