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# Fyntv Architecture Definition
ARCH Fyntv
NAME Fyntv
VERSION 0.0.0.1
DATE June 2026
STATUS Draft
END
# =============================================================================
# Instruction Formats
# =============================================================================
FORMAT R
WIDTH 32
FIELD opcode 6:0
FIELD rd 11:7
FIELD funct3 14:12
FIELD rs1 19:15
FIELD rs2 24:20
FIELD funct7 31:25
END
FORMAT I
WIDTH 32
FIELD opcode 6:0
FIELD rd 11:7
FIELD funct3 14:12
FIELD rs1 19:15
FIELD imm 31:20
END
FORMAT S
WIDTH 32
FIELD opcode 6:0
FIELD imm_lo 11:7
FIELD funct3 14:12
FIELD rs1 19:15
FIELD rs2 24:20
FIELD imm_hi 31:25
END
FORMAT B
WIDTH 32
FIELD opcode 6:0
FIELD imm_4_1 11:7
FIELD funct3 14:12
FIELD rs1 19:15
FIELD rs2 24:20
FIELD imm_10_5 30:25
FIELD imm_12 31:31
END
FORMAT U
WIDTH 32
FIELD opcode 6:0
FIELD rd 11:7
FIELD imm 31:12
END
FORMAT J
WIDTH 32
FIELD opcode 6:0
FIELD rd 11:7
FIELD imm_19_12 19:12
FIELD imm_11 20:20
FIELD imm_10_1 30:21
FIELD imm_20 31:31
END
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