URL https://opencores.org/ocsvn/amber/amber/trunk

Subversion Repositories amber

[/] [amber/] [trunk/] [hw/] [vlog/] [amber25/] [a25_decode.v] - Rev 42

Rev	Log message	Author	Age	Path
35	Amber25 improvements: Use 128-bit wishbone bus, instead of 32-bit to reduce cache miss fetch times Use a fast barrel shifter for shifts between 0 and 4 to improve timing Use a 2 cycle full barrel shifter for complex shifts	csantifort	4940d 01h	/amber/trunk/hw/vlog/amber25/a25_decode.v
20	Added feature to A25 core to directly use a read value from the write back stage to reduce the stall to 1 cycle when there is a register conflict with the following instruction. This increases performance by about 3%.	csantifort	5025d 00h	/amber/trunk/hw/vlog/amber25/a25_decode.v
17	amber25 core bug fix. The return address for irq interrupts was off by 4 bytes when the interrupt occurred during a stm instruction with the following instruction having some register conflicts. Added test irq_stm to catch the bug. Cleaned up some header descriptions	csantifort	5028d 22h	/amber/trunk/hw/vlog/amber25/a25_decode.v
16	Deleted the old version of the 3-state amber core. Its replaced with amber23. Added the 5-state Amber core.	csantifort	5031d 13h	/amber/trunk/hw/vlog/amber25/a25_decode.v