Prevent accessing RAM outside of the physical memory

tillitis / tillitis-key1

Board designs, FPGA verilog, firmware for TKey, the flexible and open USB security key 🔑

https://www.tillitis.se

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Prevent accessing RAM outside of the physical memory #160

Closed secworks closed 6 months ago

secworks commented 7 months ago

This PR adds an address filter to detect addresses to the RAM area that are lager than the current RAM memory (128 kByte). This makes the memory in a similar way to the RAM in QEMU.

Closes #158

dehanj commented 6 months ago

Verified the function, not possible to address memory > 0x1FFFF.