9d7e4ac15f
Allow delays in combinatorial UDPs
...
Add a `after' clause to the `with .. select' statement.
2008-08-11 20:36:09 +01:00
01bf741983
Implement combinatorial UDPs
...
Using a `with .. select' statement
2008-08-11 13:23:50 +01:00
bf3734110e
Add VHDL syntax element for `with .. select' statement
...
This will be used to implement combinatorial UDPs
2008-08-11 13:09:52 +01:00
6dcf936807
Generate combined input for UDP devices
...
Combinatorial UDPs will be implemented with a `with ... select'
statemetnt. However the input to this must be "locally static".
This patch joins the inputs into a vector which can be used as
the select expression.
2008-08-11 12:58:46 +01:00
8e0bf3ebff
Add conversion from std_logic to (un)signed types
...
Implemented using the expression (0 => X, others => '0')
2008-08-10 11:22:23 +01:00
e4d0a92d7c
Division and modulus operators
2008-08-07 14:18:26 +01:00
28d782e13c
Remove redundant verilog_support.vhd file
2008-08-07 13:10:53 +01:00
c849dfeec4
Add XNOR logic device
2008-08-05 10:45:01 +01:00
9565ea1034
Add some whitespace above component instantiations
2008-08-03 14:50:13 +01:00
49a2693357
Add file / line number information to functions
2008-08-03 14:46:57 +01:00
c8cbac58f5
Add forward declarations for functions
...
This patch adds a forward declaration for every user funciton.
This fixes VHDL compile problems if a function calls another
before it has been declared.
2008-08-03 10:50:31 +01:00
752a90dc2f
Insert blank line before VHDL process in output
2008-08-02 10:45:38 +01:00
a26d91557b
Add binary NAND and NOR operators
2008-08-01 17:42:26 +01:00
d21277f1b9
Tidy up whitespace in output
2008-07-31 21:17:49 +01:00
8a5f129e56
Draw nexus in multiple passes
2008-07-29 12:00:26 +01:00
8b32096e2a
Convert std_logic to Boolean in loop tests
2008-07-27 18:39:16 +01:00
d3296d4895
Refactor while/for loop code to use common base
2008-07-24 15:22:25 +01:00
39c9c54760
Add repeat statement
2008-07-24 14:52:06 +01:00
8bee5b1108
Add `forever' statement type
2008-07-24 14:30:10 +01:00
1409207def
Correctly indent case statements
2008-07-23 14:31:41 +01:00
30fdadc525
Support delays in logic devices
2008-07-23 13:40:42 +01:00
a5db0297b0
Unary minus
2008-07-22 15:44:29 +01:00
0cb6ea34d7
Move type conversion code into a separate file
2008-07-19 15:23:47 +01:00
b6df73d3b9
Support functions for converting (un)signed -> boolean
2008-07-19 15:15:16 +01:00
6ff80e80a4
Catch case where (un)signed is converted to boolean
2008-07-18 12:30:24 +01:00
e9637f6d11
Generate synthesisable code for sequential processes
...
Whilst adding `wait until ...' at the end of every
process is a valid translation of the input, it is not
actually synthesisable in at least one commercial
synthesiser (XST). According to the XST manual the
correct template is to use `wait until ...' at the
start of sequential processes and `wait on ...'
(equivalent to `wait until ...' with 'Event on all
the signals) at the end of combinatorial processes.
This patch implements that.
2008-07-17 17:36:42 +01:00
1f9ed2c5ec
VHDL AST element for `wait on' statement
2008-07-17 17:23:21 +01:00
9916686c24
Convert constant bits to integers
2008-07-17 14:29:56 +01:00
c86377790f
Automatically convert constant bit strings to integers
2008-07-17 14:26:35 +01:00
2a791bfb38
Assignment to arrays
2008-07-17 13:41:44 +01:00
1d3ac6bc1f
Generate VHDL array type declarations of Verilog arrays
2008-07-17 13:08:55 +01:00
7c5b0f737c
Class for VHDL type declarations
2008-07-17 11:59:02 +01:00
d343db34fd
Fix initialisation order
...
Initial processes set a magic flag in the code generator
which allows it to push constant assignments into the
VHDL signal initialisation and omit the assignment.
However, it should only do this if the signal has not
already been read (otherwise the previous read would
not get the undefined value as expected)
2008-07-16 12:00:11 +01:00
40cabff44f
Leave blank line at end of function
2008-07-15 16:30:50 +01:00
99ef8ec4f1
Simplify edge detector code
...
Now generates a `wait until' statement rather than a
sensitivity list.
2008-07-14 20:29:49 +01:00
f84f50842c
Support bufif for tri1 nets
2008-07-14 19:13:11 +01:00
65720f49fe
Simple bufif cases
2008-07-14 19:00:58 +01:00
3bd480a375
Allow ouput to be read if connected to child output
...
If output P of A is connected to output Q of B (and A is
instantiated inside B) then VHDL does not allow B to read
the value of Q (also P), but Verilog does. To get around
this the output Q is mapped to P_Sig which is then connected
to P, this allows B to read the value of P/Q via P_Sig.
2008-07-13 12:41:02 +01:00
bd5cc96956
Correct vector sizes for bit select
2008-07-08 00:20:31 +01:00
4777966b4c
Bit select bug fixes
2008-07-07 21:19:59 +01:00
6b73cc39a5
Add Active_High support func and fix LPM part select
2008-07-07 16:17:54 +01:00
b0de1a8d7e
Implement part select for LHS of assignment
2008-07-07 16:11:45 +01:00
c33600bcc3
Add concatenation operator
2008-07-06 18:21:34 +01:00
1410c339de
Make sure any calls to numeric_std Resize have correct type
...
The signed/unsigned-ness of an expression needs to be
preserved over any call to Resize. Also add a sanity
check to make sure non-vector types are not resized.
2008-07-04 11:36:11 +01:00
88816e150a
Properly parenthesise unary operators
2008-07-04 11:17:24 +01:00
c54b36c902
Add logical AND operator
2008-07-04 11:10:20 +01:00
19cbab78b2
Tidy up code to generate default branch of case
2008-07-03 20:04:47 +01:00
050aa277ae
Make vhdl_element::emit a little more generic
2008-07-01 10:37:22 +01:00
500442e5c5
Working function calls
2008-06-25 22:15:57 +01:00
d997397c38
Generate function calls with parameters
2008-06-25 21:49:22 +01:00
Nick Gasson