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213 Commits

Author SHA1 Message Date
steve 08e6bf2e27 Make simulation precision available to VPI. 2000-07-26 03:53:11 +00:00
steve 42e4ff47c8 Move inital value handling from NetNet to Nexus 
objects. This allows better propogation of inital
 values.

 Clean up constant propagation  a bit to account
 for regs that are not really values.
 2000-07-14 06:12:56 +00:00
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 f3384c7da5 expression scan uses tgt_ to get output files. 2000-06-24 16:40:46 +00:00
steve 8f64656984 Binary expressions as operands to system tasks. 2000-06-15 04:23:17 +00:00
steve 66ae567b25 Index in memory assign should be a NetExpr. 2000-06-13 03:24:48 +00:00
steve fcbbbfe3d6 Expand constants in its special case assignment. (Stephan Boettcher) 2000-06-06 02:32:45 +00:00
steve 161fa9c4e7 Do not attach temporaries to scopes. 2000-06-03 02:13:43 +00:00
steve a674df662f The NetESignal shortcut cannot expand an rvalue. 2000-05-31 03:52:07 +00:00
steve 0c62321402 Emin init code only once per nexus. 2000-05-25 06:02:12 +00:00
steve 1bde1b862d Optimize assignment from signals. 2000-05-25 01:45:35 +00:00
steve 092b1bded5 Add vpi numbers to the bits table. 2000-05-20 02:48:51 +00:00
steve b93415e8f1 Combine constants into a bit table. 2000-05-20 02:26:23 +00:00
steve 367db72c99 Add support for procedural continuous assignment. 2000-05-11 23:37:26 +00:00
steve 6021c7b192 Give strengths to logic and bufz devices. 2000-05-09 21:16:35 +00:00
steve c4d8ded269 non-blocking assignment to a bit select. 2000-05-07 21:17:21 +00:00
steve ca6631fdda Fix connection of Direction of LMP_CLSHIFT 
to constant values. Remember to add a signal
 to the nexus and connect the receiver in vvm.
 2000-05-07 19:40:26 +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 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 dab5999621 Handle assigning small values to big registers. 2000-04-26 18:35:11 +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 7484feceb5 fork-join support in vvm. 2000-04-15 19:51:30 +00:00
steve d033509359 Support chained events. 2000-04-15 02:25:32 +00:00
steve df0808d5bb No more class derivation from vvm_thread. 2000-04-14 23:31:53 +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 cad5df1e9f Donot create tables that have no entries. 2000-04-09 16:55:42 +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 8a10511105 vvm_bitset_t is no longer a template. 2000-03-26 16:28:31 +00:00
steve 9f84deeb56 signal bits are referenced at run time by the vpiSignal struct. 2000-03-25 05:02:24 +00:00
steve dcaea50b8f Remove all remain vvm_bitset_t return values, 
and disallow vvm_bitset_t copying.
 2000-03-25 02:43:56 +00:00
steve c790ccca5a Update vvm_ram_dq to nexus style. 2000-03-24 03:47:01 +00:00
steve edc40f1792 vvm_unop and vvm_binop pass result by reference 
instead of returning a value.
 2000-03-24 02:43:36 +00:00
steve eb9ed665f3 Do not create 0 length parameters to system tasks. 2000-03-23 03:24:39 +00:00
steve a9e11d6546 Replace the vpip_bit_t with a typedef and 
define values for all the different bit
 values, including strengths.
 2000-03-22 04:26:40 +00:00
steve c5b64b4ad4 Do not link adder pins that ar unconnected. 2000-03-20 17:40:33 +00:00
steve 2deb379c06 Update the FF device to nexus style. 2000-03-18 23:22:37 +00:00
steve 80bd855329 Update bufz to nexus style. 2000-03-18 02:26:02 +00:00
steve 567de6ba39 Generate references into a table of nexus objects instead of 
generating lots of isolated nexus objects. Easier on linkers
 and compilers,

 Add missing nexus support for l-value bit selects,

 Detemplatize the vvm_mux type.

 Fix up the vvm_nexus destructor to disconnect from drivers.
 2000-03-18 01:26:59 +00:00
steve 3adaf23aab Detemplatize the vvm_signal_t class. 2000-03-17 20:21:14 +00:00
steve e71413123e nor2 and and2 optimized gates. 2000-03-17 19:23:59 +00:00
steve 51e96a2d8b Adder and comparator in nexus style. 2000-03-17 17:25:53 +00:00
steve 20712d3fcc Update vvm_mult to nexus style. 2000-03-17 03:05:13 +00:00
steve 8cbf4f815e vvm_clshift implementation without templates. 2000-03-17 02:22:03 +00:00
steve 5ea3610d4a Update LPM_MUX to nexus style. 2000-03-16 23:13:49 +00:00
steve 9deb7f6ba5 Update LMP_CLSHIFT to use nexus interface. 2000-03-16 21:47:27 +00:00
steve 2563e2b717 Revise the VVM backend to use nexus objects so that 
drivers and resolution functions can be used, and
 the t-vvm module doesn't need to write a zillion
 output functions.
 2000-03-16 19:03:03 +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 aae17041ef Remove excess variable. 2000-02-29 05:20:21 +00:00
steve 1d7cf5bb8c Handle scope of complex guards when writing case in functions. 2000-02-29 05:02:30 +00:00
steve 59c240bc9b I no longer need to declare string and number tables early. 2000-02-24 01:57:10 +00:00
steve b734ecf02f Macintosh compilers do not support ident. 2000-02-23 02:56:53 +00:00
steve e0873f6c14 Support case in functions. 2000-02-14 01:20:50 +00:00
steve b8ddbcf62b support if-else in function definitions. 2000-02-14 00:12:09 +00:00
steve 1ee4015aa8 Handle selecting memory words at run time. 2000-02-13 19:59:33 +00:00
steve a8d787bd66 Accept memory words as parameter to $display. 2000-02-13 19:18:27 +00:00
steve 121b6c2ecb missing break is switch. 2000-01-18 04:53:57 +00:00
steve d84b72609d Add the XNOR operator. 2000-01-13 06:05:46 +00:00
steve ef98be1192 Support for multiple VPI modules. 2000-01-13 05:11:24 +00:00
steve aa8908c52f Multiplication all the way to simulation. 2000-01-13 03:35:35 +00:00
steve fdf2c1b0d0 Non-blocking memory writes. 2000-01-08 03:09:14 +00:00
steve f3b76d958d It is possible for node to initialize several pins of a signal. 2000-01-02 17:57:56 +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 6be5421c8a Remove the useless vvm_simulation class. 1999-12-12 19:47:54 +00:00
steve 76655ce2bb Allow memories without indices in expressions. 1999-12-12 06:03:14 +00:00
steve 3e2bb85f58 Synthesize LPM_RAM_DQ for writes into memories. 1999-12-05 02:24:08 +00:00
steve 22d89c5984 Update case comparison (Eric Aardoom). 1999-12-02 16:58:58 +00:00
steve bb68753bd2 Properly initialize registers. 1999-11-29 00:38:27 +00:00
steve dab47610ed Remove useless tests for NetESignal. 1999-11-28 23:59:22 +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 fa088f8baa Set VPI_MODULE_PATH in the target code, if desired. 1999-11-28 18:05:37 +00:00
steve 48b6726cf4 gate outputs need to set signal values. 1999-11-28 01:16:18 +00:00
steve bf42be12de Build up the lists in the scope of a module, 
and get $dumpvars to scan the scope for items.
 1999-11-28 00:56:08 +00:00
steve 4cfa3e4047 Support the creation of scopes. 1999-11-27 19:07:57 +00:00
steve 680c35a845 LT and GT fixes from Eric Aardoom. 1999-11-24 04:38:49 +00:00
steve b4aade1e4c Fix coding errors handling names of logic devices, 
and add support for buf device in vvm.
 1999-11-21 01:16:51 +00:00
steve a81dcd7955 Support memories in continuous assignments. 1999-11-21 00:13:08 +00:00
steve 513ade9b95 Support combinatorial comparators. 1999-11-14 23:43:45 +00:00
steve 1624afe1ba Add support for the LPM_CLSHIFT device. 1999-11-14 20:24:28 +00:00
steve 2602505885 Support the LPM_MUX in vvm. 1999-11-13 03:46:52 +00:00
steve 82f3f0f741 Create the vpiMemory handle type. 1999-11-10 02:52:24 +00:00
steve c688d95cb8 Put number constants into a static table. 1999-11-06 16:00:17 +00:00
steve 89881adece Add the synth functor to do generic synthesis 
and add the LPM_FF device to handle rows of
 flip-flops.
 1999-11-01 02:07:40 +00:00
steve e1bbbe5614 Include subtraction in LPM_ADD_SUB device. 1999-10-31 20:08:24 +00:00
steve 71ecf8c143 Add to netlist links pin name and instance number, 
and arrange in vvm for pin connections by name
 and instance number.
 1999-10-31 04:11:27 +00:00
steve 0721615345 gate output pins use vpip_bit_t (Eric Aardoom) 1999-10-28 21:51:21 +00:00
steve 2862178a6f Get rid of monitor_t and fold __vpiSignal into signal. 1999-10-28 21:36:00 +00:00
steve 162b895e1b Put strings into a single string table. 1999-10-28 04:48:29 +00:00
steve d6450599d6 Rewrite vvm VPI support to make objects more 
persistent, rewrite the simulation scheduler
 in C (to interface with VPI) and add VPI support
 for callbacks.
 1999-10-28 00:47:24 +00:00
steve 409c8ff47d assignment to bit select is aa single bit. 1999-10-23 16:27:53 +00:00