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144 Commits

Author SHA1 Message Date
steve 18eb34921f Add support for non-constant delays in delay statements, 
Support evaluating ! in constant expressions, and
 move some code from netlist.cc to net_proc.cc.
 2000-07-07 04:53:53 +00:00
steve 583868e74e Redesign Links to include the Nexus class that 
carries properties of the connected set of links.
 2000-06-25 19:59:41 +00:00
steve e52ada617e Get rid of useless next_link method. 2000-06-24 22:55:19 +00:00
steve 66ae567b25 Index in memory assign should be a NetExpr. 2000-06-13 03:24:48 +00:00
steve c1c0168893 Globally merge redundant event objects. 2000-05-31 02:26:49 +00:00
steve fd09bc3e3e Merge similar probes within a module. 2000-05-27 19:33:23 +00:00
steve 367db72c99 Add support for procedural continuous assignment. 2000-05-11 23:37:26 +00:00
steve b28f258463 Import MCD support from Stephen Tell, and add 
system function parameter support to the IVL core.
 2000-05-07 18:20:07 +00:00
steve b90cda1f3f Carry strength values from Verilog source to the 
pform and netlist for gates.

 Change vvm constants to use the driver_t to drive
 a constant value. This works better if there are
 multiple drivers on a signal.
 2000-05-07 04:37:55 +00:00
steve fbe475ef7d Add infrastructure for system functions, move 
$time to that structure and add $random.
 2000-05-04 03:37:58 +00:00
steve 69612ceb73 Move memories to the NetScope object. 2000-05-02 03:13:30 +00:00
steve 8d8f1e2401 Move signal tables to the NetScope class. 2000-05-02 00:58:11 +00:00
steve 2b40c7ce11 integer division in expressions properly get width. 2000-04-28 18:43:23 +00:00
steve 08e9a114a2 Catch memory word parameters to tasks. 2000-04-28 16:50:53 +00:00
steve 6e8fe39cc7 Better comments about bufif devices. 2000-04-23 21:17:31 +00:00
steve 6446add9cd Emit code for the bufif devices. 2000-04-23 21:15:07 +00:00
steve a8114ae122 Add support for the procedural release statement. 2000-04-23 03:45:24 +00:00
steve 44838f8973 Add support for force assignment. 2000-04-22 04:20:19 +00:00
steve 2094a2f466 Catch some simple identity compareoptimizations. 2000-04-20 00:28:03 +00:00
steve 74c43032b3 Clean up unneeded NetEvent objects. 2000-04-18 04:50:19 +00:00
steve 4f07c43976 Minor cleanup of NetTaskDef. 2000-04-18 01:02:53 +00:00
steve 726f7b8b11 Synthesis of comparator in expressions. 
Connect the NetEvent and related classes
 together better.
 2000-04-16 23:32:18 +00:00
steve 7484feceb5 fork-join support in vvm. 2000-04-15 19:51:30 +00:00
steve 4493e968da Finally remove the NetNEvent and NetPEvent classes, 
Get synthesis working with the NetEvWait class,
 and get started supporting multiple events in a
 wait in vvm.
 2000-04-12 20:02:52 +00:00
steve b1fd927acb Named events really should be expressed with PEIdent 
objects in the pform,

 Handle named events within the mix of net events
 and edges. As a unified lot they get caught together.
 wait statements are broken into more complex statements
 that include a conditional.

 Do not generate NetPEvent or NetNEvent objects in
 elaboration. NetEvent, NetEvWait and NetEvProbe
 take over those functions in the netlist.
 2000-04-12 04:23:57 +00:00
steve 8dbd64121f All events now use the NetEvent class. 2000-04-10 05:26:05 +00:00
steve 30e8289239 Simulate named event trigger and waits. 2000-04-04 03:20:15 +00:00
steve b62a7ace5c Remove the useless sref template. 2000-04-02 04:26:06 +00:00
steve 694ff934af Add support for integer division. 2000-04-01 21:40:22 +00:00
steve d97ab9be23 New and improved combinational primitives. 2000-03-29 04:37:10 +00:00
steve 6eef54595f Support localparam. 2000-03-12 17:09:40 +00:00
steve 78ab1a7bba Locate scopes in statements. 2000-03-11 03:25:51 +00:00
steve 61822d48aa Handle defparam to partial hierarchical names. 2000-03-10 06:20:48 +00:00
steve e7efc2709a Redesign the implementation of scopes and parameters. 
I now generate the scopes and notice the parameters
 in a separate pass over the pform. Once the scopes
 are generated, I can process overrides and evalutate
 paremeters before elaboration begins.
 2000-03-08 04:36:53 +00:00
steve b734ecf02f Macintosh compilers do not support ident. 2000-02-23 02:56:53 +00:00
steve e77bcf6910 Include some block matching from Larry. 2000-02-13 04:35:43 +00:00
steve aa8908c52f Multiplication all the way to simulation. 2000-01-13 03:35:35 +00:00
steve fac3bde2c8 Elaborate parameters afer binding of overrides. 2000-01-10 01:35:23 +00:00
steve e6820ed169 Handle synthesis of concatenation. 2000-01-01 06:18:00 +00:00
steve b6d1bb1fa7 Propogate constant 0 in low bits of adders. 1999-12-30 04:19:12 +00:00
steve 4de8ba489d Rewrite the cprop functor to use the functor_t interface. 1999-12-17 06:18:15 +00:00
steve 65ae92859c NetConst can now hold wide constants. 1999-12-17 03:38:46 +00:00
steve d54cc14ca2 Simulate carry output on adders. 1999-12-16 02:42:14 +00:00
steve 76655ce2bb Allow memories without indices in expressions. 1999-12-12 06:03:14 +00:00
steve 4a6d3a5104 Fix const/non-const errors. 1999-12-09 06:00:00 +00:00
steve 09de918198 Generate XNF RAMS from synthesized memories. 1999-12-05 19:30:42 +00:00
steve 3e2bb85f58 Synthesize LPM_RAM_DQ for writes into memories. 1999-12-05 02:24:08 +00:00
steve b30b695ff0 Redo synth to use match_proc_t scanner. 1999-12-01 06:06:16 +00:00
steve e96e8c62be NetESignal object no longer need to be NetNode 
objects. Let them keep a pointer to NetNet objects.
 1999-11-28 23:42:02 +00:00
steve 4cfa3e4047 Support the creation of scopes. 1999-11-27 19:07:57 +00:00