diff options
| author | Pavel V. Shatov (Meister) <meisterpaul1@yandex.ru> | 2019-10-21 12:46:22 +0300 |
|---|---|---|
| committer | Pavel V. Shatov (Meister) <meisterpaul1@yandex.ru> | 2019-10-21 12:46:22 +0300 |
| commit | 3213b3ef3c1d40dfa416b6be409cfa3d15af0930 (patch) | |
| tree | f776ddb5b44a9f9e4f1b2b9da56a4b645570fdb1 /rtl/modexpng_uop_rom.v | |
| parent | 1e3303286bdb0d400d78d9d8b0aa90b29949c4a3 (diff) | |
Added "MERGE_LH" micro-operation. To be able to do Garner's formula we need
regular (not modular) multiplication. We're doing this by telling the modular
multiplier to stop after the "square" step, which computes A*B. The problem is
that the multiplier stores the lower part of the product in the internal bank L
and the upper part in the internal bank H, but we need to be able to do
operations on the product as a whole. MERGE_LH that combines the two halves of
the product into one bank.
Diffstat (limited to 'rtl/modexpng_uop_rom.v')
| -rw-r--r-- | rtl/modexpng_uop_rom.v | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/rtl/modexpng_uop_rom.v b/rtl/modexpng_uop_rom.v index adc657a..61501f9 100644 --- a/rtl/modexpng_uop_rom.v +++ b/rtl/modexpng_uop_rom.v @@ -78,6 +78,17 @@ module modexpng_uop_rom // 6'd43: data <= {UOP_OPCODE_MODULAR_SUBTRACT, UOP_CRT_DNC, UOP_NPQ_PQ, UOP_AUX_DNC, UOP_LADDER_DNC, BANK_DNC, BANK_NARROW_D, BANK_WIDE_C, BANK_NARROW_C }; // // + 6'd44: data <= {UOP_OPCODE_MODULAR_MULTIPLY, UOP_CRT_DNC, UOP_NPQ_PQ, UOP_AUX_1, UOP_LADDER_11, BANK_WIDE_C, BANK_NARROW_E, BANK_WIDE_C, BANK_NARROW_C }; // + 6'd45: data <= {UOP_OPCODE_MODULAR_MULTIPLY, UOP_CRT_DNC, UOP_NPQ_PQ, UOP_AUX_1, UOP_LADDER_11, BANK_WIDE_C, BANK_NARROW_A, BANK_WIDE_C, BANK_NARROW_C }; // + // + 6'd46: data <= {UOP_OPCODE_INPUT_TO_WIDE, UOP_CRT_X, UOP_NPQ_PQ, UOP_AUX_2, UOP_LADDER_DNC, BANK_DNC, BANK_IN_2_Q, BANK_WIDE_E, BANK_DNC }; // + // + 6'd47: data <= {UOP_OPCODE_INPUT_TO_NARROW, UOP_CRT_X, UOP_NPQ_PQ, UOP_AUX_2, UOP_LADDER_DNC, BANK_DNC, BANK_IN_2_Q, BANK_DNC, BANK_NARROW_E }; // + // + 6'd48: data <= {UOP_OPCODE_REGULAR_MULTIPLY, UOP_CRT_DNC, UOP_NPQ_PQ, UOP_AUX_1, UOP_LADDER_11, BANK_WIDE_E, BANK_NARROW_C, BANK_DNC, BANK_DNC }; // + // + 6'd49: data <= {UOP_OPCODE_MERGE_LH, UOP_CRT_DNC, UOP_NPQ_DNC, UOP_AUX_DNC, UOP_LADDER_DNC, BANK_DNC, BANK_DNC, BANK_DNC, BANK_NARROW_A }; // + // default: data <= {UOP_OPCODE_STOP, UOP_CRT_DNC, UOP_NPQ_DNC, UOP_AUX_DNC, UOP_LADDER_DNC, UOP_SEL_DNC_ALL }; // endcase |