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[/] [openmsp430/] [trunk/] [core/] [rtl/] [verilog/] [omsp_frontend.v] - Rev 126

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117 To facilitate commercial adoption of the openMSP430, the core has moved to a modified BSD license. olivier.girard 4908d 09h /openmsp430/trunk/core/rtl/verilog/omsp_frontend.v
111 Re-organized the "openMSP430_defines.v" file.
Re-defined the CPU_ID register of the debug interface (in particular to support custom user versioning).
Added RTL configuration possibility to expand the peripheral address space from 512B (0x0000 to 0x0200) to up to 32kB (0x0000 to 0x8000).
As a consequence the per_addr bus width goes from 8 to 14 bits and the peripherals address decoders have been updated accordingly.		 olivier.girard 4942d 08h /openmsp430/trunk/core/rtl/verilog/omsp_frontend.v
106 Separated the Timer A defines from the openMSP430 ones.
Added the "dbg_en" port in order to allow a separate reset of the debug interface.
Added the "core_en" port (when cleared, the CPU will stop execution, the dbg_freeze signal will be set and the aclk & smclk will be stopped).
Renamed "per_wen" to "per_we" to prevent confusion with active low signals.
Removed to missing unused flops when the DBG_EN is not defined (thanks to Mihai contribution).		 olivier.girard 4998d 07h /openmsp430/trunk/core/rtl/verilog/omsp_frontend.v
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 5013d 07h /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 5018d 14h /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 5031d 09h /openmsp430/trunk/core/rtl/verilog/omsp_frontend.v
85 Diverse RTL cosmetic updates. olivier.girard 5054d 08h /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 5413d 07h /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 5420d 10h /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 5449d 09h /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 5449d 10h /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 5570d 12h /openmsp430/trunk/core/rtl/verilog/frontend.v
17 Updated header with SVN info olivier.girard 5596d 07h /openmsp430/trunk/core/rtl/verilog/frontend.v
2 Upload complete openMSP430 project to the SVN repository olivier.girard 5631d 07h /openmsp430/trunk/core/rtl/verilog/frontend.v

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