FPGA

I do not have any hands-on experience with FPGAs yet and do not want to get into FPGAs until I have a stable T729 design already. I won't know what size FPGA to get until the T729 architecture is mostly complete. Large FPGAs can get quite expensive.

I foresee some limitations running a ternary project on an FPGA.

• FPGAs can only do binary. Must use ADC and DACs to handle analog signals.
  • Only BCT implementation would work on an FPGA.
• Memory access.
  • Ternary decoder to binary encoder would allow for sequential access of binary SRAM/DRAM. However, would consume a lot of logic and be slower.
  • Direct mapping; 12-trits would take 24-bits. Wiring the 12-trit BCT memory address space directly to 24-bit address 16-bit wide memory will be fast but not utilize the majority of the memory.
    • (2^24 minus 3^12)