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[/] [openmsp430/] [trunk/] [core/] [rtl/] [verilog/] [omsp_frontend.v] - Rev 105

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105 Removed dummy memory read access for the MOV/PUSH/CALL/RETI instructions.
These were not problematic but this is simply cleaner that way.
olivier.girard 4955d 00h /openmsp430/trunk/core/rtl/verilog/omsp_frontend.v
103 Removed the timescale from all RTL files.
Added possibility to exclude the "includes" statements from the RTL.
olivier.girard 4960d 07h /openmsp430/trunk/core/rtl/verilog/omsp_frontend.v
91 Fixed bug when an IRQ arrives while CPU is halted through the serial debug interface.
This bug is CRITICAL for people using working with interrupts and the Serial Debug Interface.
olivier.girard 4973d 02h /openmsp430/trunk/core/rtl/verilog/omsp_frontend.v
85 Diverse RTL cosmetic updates. olivier.girard 4996d 00h /openmsp430/trunk/core/rtl/verilog/omsp_frontend.v
60 Cleanup of the PC (R0) generation logic.
Formal equivalence was shown between the new and old code with Synopsys' Formality (to make sure that nothing has been broken :-P ).
olivier.girard 5355d 00h /openmsp430/trunk/core/rtl/verilog/omsp_frontend.v
53 Fixed the following combinatorial timing loop:
1- irq_detect (omsp_frontend)
2- decode (omsp_frontend)
3- dbg_swbrk (omsp_dbg)
4- halt_flag_set (omsp_dbg)
6- dbg_halt_cmd (omsp_dbg)
7- irq_detect (omsp_frontend)

Without this fix, problem could occur whenever an IRQ request arrives during a software breakpoint instruction fetch.
olivier.girard 5362d 03h /openmsp430/trunk/core/rtl/verilog/omsp_frontend.v
34 To avoid potential conflicts with other Verilog modules in bigger projects, the openMSP430 sub-modules have all been renamed with the "omsp_" prefix. olivier.girard 5391d 02h /openmsp430/trunk/core/rtl/verilog/omsp_frontend.v
33 In order to avoid confusion, the following changes have been implemented to the Verilog code:
- renamed the "rom_*" ports and defines to "pmem_*" (program memory).
- renamed the "ram_*" ports and defines to "dmem_*" (data memory).

In addition, in order to prevent potential conflicts with the Verilog defines of other IPs, a Verilog undefine file has been created.
olivier.girard 5391d 03h /openmsp430/trunk/core/rtl/verilog/frontend.v
23 Renamed the "openMSP430.inc" file to "openMSP430_defines.v" & added the "timescale.v" file.
In order to follow the same structure as other OpenCores projects, the timescale and the defines are now included from within the Verilog files (using the `include construct).
olivier.girard 5512d 05h /openmsp430/trunk/core/rtl/verilog/frontend.v
17 Updated header with SVN info olivier.girard 5538d 00h /openmsp430/trunk/core/rtl/verilog/frontend.v
2 Upload complete openMSP430 project to the SVN repository olivier.girard 5573d 00h /openmsp430/trunk/core/rtl/verilog/frontend.v

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