+## funct5 = 00110 - unused
+
+Brownfield encodings available.
+
+## funct5 = 00111 - unused
+
+Brownfield encodings available.
+
+## funct5 = 01000 - FCVT
+
+This table uses rs2 for encoding 1-operand FP operations, using
+funct3 to specify the "rounding" mode
+
+Notes:
+
+* FP16 logically deduced from fmt field encoding (bits 25-26)
+
+[[!table data="""
+31..27 | 26..25 | 24..20 |19..15| 14...12| 11..7 | 6....0 | function |
+funct5 | SDHQ | rs2 | rs1 | funct3 | rd | opcode | name |
+ 5 | 2 | 5 | 5 | 3 | 5 | 7 | |
+01000 | 00 | 00000 | rs1 | rm | rd | 1010011 | ???????? |
+01000 | 00 | 00001 | rs1 | rm | rd | 1010011 | FCVT.S.D |
+01000 | 00 | 00010 | rs1 | rm | rd | 1010011 | **FCVT.S.H**|
+01000 | 00 | 00011 | rs1 | rm | rd | 1010011 | FCVT.S.Q |
+01000 | 00 | xxxxx | rs1 | rm | rd | 1010011 | rs2? |
+------ | ----- | ----- | -----| ----- | ----- | ------- | -------- |
+01000 | 01 | 00000 | rs1 | rm | rd | 1010011 | FCVT.D.S |
+01000 | 01 | 00001 | rs1 | rm | rd | 1010011 | ???????? |
+01000 | 01 | 00010 | rs1 | rm | rd | 1010011 | **FCVT.D.H**|
+01000 | 01 | 00011 | rs1 | rm | rd | 1010011 | FCVT.D.Q |
+01000 | 01 | xxxxx | rs1 | rm | rd | 1010011 | rs2? |
+------ | ----- | ----- | -----| ----- | ----- | ------- | -------- |
+01000 | 10 | 00000 | rs1 | rm | rd | 1010011 | FCVT.H.S |
+01000 | 10 | 00001 | rs1 | rm | rd | 1010011 | **FCVT.H.D**|
+01000 | 10 | 00010 | rs1 | rm | rd | 1010011 | ???????? |
+01000 | 10 | 00011 | rs1 | rm | rd | 1010011 | FCVT.H.Q |
+01000 | 10 | xxxxx | rs1 | rm | rd | 1010011 | rs2? |
+------ | ----- | ----- | -----| ----- | ----- | ------- | -------- |
+01000 | 11 | 00000 | rs1 | rm | rd | 1010011 | FCVT.Q.S |
+01000 | 11 | 00001 | rs1 | rm | rd | 1010011 | FCVT.Q.D |
+01000 | 11 | 00010 | rs1 | rm | rd | 1010011 | **FCVT.Q.H**|
+01000 | 11 | 00011 | rs1 | rm | rd | 1010011 | ???????? |
+01000 | 11 | xxxxx | rs1 | rm | rd | 1010011 | rs2? |
+"""]]
+
+## funct5 = 01001 - unused
+
+Brownfield encodings available.
+
+## funct5 = 01010 - unused
+
+Brownfield encodings available.
+
+## funct5 = 01011 - 1-op Transcendentals <a name="transcendentals_1op"></a>
+
+This table uses rs2 for encoding 1-operand FP operations, using
+funct3 to specify the "rounding" mode