diff options
Diffstat (limited to 'rtl/modexpng_microcode.vh')
| -rw-r--r-- | rtl/modexpng_microcode.vh | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/rtl/modexpng_microcode.vh b/rtl/modexpng_microcode.vh index 1465c48..2e591e7 100644 --- a/rtl/modexpng_microcode.vh +++ b/rtl/modexpng_microcode.vh @@ -32,8 +32,19 @@ localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_INPUT_TO_NARROW = 4'd2; */ localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_OUTPUT_FROM_NARROW = 4'd3; +/* CRT tells from which of the dual MMM to read + * NPQ specifies the width of the operand + * AUX is don't care + * LADDER is don't care + * source and destination WIDE are don't care + */ -//localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_COPY_CRT_Y2X = 4'd0; +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_COPY_CRT_Y2X = 4'd4; +/* CRT is don't care + * NPQ specifies the width of the operand + * AUX is don't care + * LADDER is don't care + */ localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_MULTIPLY = 4'd8; /* CRT is don't care @@ -42,6 +53,14 @@ localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_MODULAR_MULTIPLY = 4'd8; * LADDER specifies Montgomery ladder mode */ +localparam [UOP_OPCODE_W -1:0] UOP_OPCODE_PROPAGATE_CARRIES = 4'd11; +/* CRT is don't care + * NPQ specifies the width of the operand + * AUX is don't care + * LADDER is don't care + * source and destination WIDE are don't care + */ + // CRT localparam [UOP_CRT_W -1:0] UOP_CRT_X = 1'b0; localparam [UOP_CRT_W -1:0] UOP_CRT_Y = 1'b1; |