Hana UXN will implement the UXN opcodes on an FPGA. They are remarkably similat to Forth words. The big difference is how literals are handed. The UXN literal opcode puts the cpu in a different state, so that the next word is interpreted as a literal. In contrast Forth instructions use the first bit to indicate if an instruciton is a literal or not.
Hana Varvara may be a complete Vavanna computer implemented on an FPGA. I am not yet committed to doing it. I will see what people have to say. This UXN is all new to me, although I have been intrigued by collapse-os for quite a while.
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