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28 Commits

Author SHA1 Message Date
Eddie Hung e95fb24574 Improve xilinx_srl.fixed generate, add .variable generate 2019-08-26 17:49:08 -07:00
Eddie Hung e574edc3e9 Populate generate for xilinx_srl.fixed pattern 2019-08-26 14:21:17 -07:00
Eddie Hung a048fc93e8 Do not allow Q of last cell of variable length SRL to be (* keep *) 2019-08-23 18:15:24 -07:00
Eddie Hung ee9f6e6243 Also add first.Q to chain_bits since variable length 2019-08-23 18:14:06 -07:00
Eddie Hung 70ce3d0670 Do not enforce !EN_POLARITY on $dffe 2019-08-23 18:11:28 -07:00
Eddie Hung e081303ee8 Cleanup FDRE matching 2019-08-23 17:23:52 -07:00
Eddie Hung 54488cfb82 Oops don't need a finally block 2019-08-23 16:39:37 -07:00
Eddie Hung 83e2d87fb8 Keep track of bits in variable length chain, to check for taps 2019-08-23 16:21:10 -07:00
Eddie Hung f2d4814284 Don't forget $dff has no EN 2019-08-23 16:14:57 -07:00
Eddie Hung 2217d926a9 Same for variable length 2019-08-23 16:13:16 -07:00
Eddie Hung b1caf7be5e Filter on en_port for fixed length 2019-08-23 16:09:46 -07:00
Eddie Hung 513af10d77 Check clock is consistent 2019-08-23 15:18:26 -07:00
Eddie Hung c2757613b6 Check for non unique nusers/fanouts 2019-08-23 14:32:36 -07:00
Eddie Hung 242b3083ea Cope with possibility that D could connect to Q on same cell 2019-08-23 13:06:31 -07:00
Eddie Hung 18b64609c2 xilinx_srl to use 'slice' features of pmgen for word level 2019-08-23 12:22:06 -07:00
Eddie Hung 74bd190d3b Remove output_bits 2019-08-22 11:14:59 -07:00
Eddie Hung 7d02d17b16 Reuse var 2019-08-21 19:18:40 -07:00
Eddie Hung 5c8344363f Revert "Trim shiftx_width when upper bits are 1'bx" 
This reverts commit 7e7965ca7b.
 2019-08-21 19:18:27 -07:00
Eddie Hung 7e7965ca7b Trim shiftx_width when upper bits are 1'bx 2019-08-21 18:43:17 -07:00
Eddie Hung 15188033da Add variable length support to xilinx_srl 2019-08-21 17:34:40 -07:00
Eddie Hung 6d76ae4c65 Rename pattern to fixed 2019-08-21 15:46:58 -07:00
Eddie Hung b0a3b430bf attribute -> attr 2019-08-21 15:44:07 -07:00
Eddie Hung 61b4d7ae13 Use Cell::has_keep_attribute() 2019-08-21 15:41:46 -07:00
Eddie Hung 6fa9e03e4c xilinx_srl to support FDRE and FDRE_1 2019-08-21 15:35:29 -07:00
Eddie Hung 1c7d721558 Reject if not minlen from inside pattern matcher 2019-08-21 14:26:24 -07:00
Eddie Hung cab2bd083e Get wire via SigBit 2019-08-21 13:47:47 -07:00
Eddie Hung 52fea5b658 Respect \keep on cells or wires 2019-08-21 13:42:03 -07:00
Eddie Hung 0250712486 Initial progress on xilinx_srl 2019-08-21 12:50:49 -07:00