J.Z.-Wentworth-Cache-Now

Shibo Yao
Mike Chen
Jeffrey Zhu (J.Z.)

Basic Design

Pipelined CPU based on the LC-3b ISA
Two levels of cache w/ write-back, write-allocate policies controlled by a cache arbiter

Split L1 caches, 2-ways, 128-bit lines (one for instructions, one for data)
One L2 cache, 4-ways, 256-bit lines
Hazard detection and data forwarding

Advanced Design

L2 cache has 4-ways, multicycle hits, and uses a pseudo-lru replacement policy.
Eviction Write Buffer
Victim Cache between D-Cache and L2 Cache
Local history branch prediction (w/ bimodal counters)
LC-3X support for instructions such as DIV, MULT, SUB, etc.
Counters for bubbles inserted, branch mispredictions, and cache misses (software visible) at all levels.

Name		Name	Last commit message	Last commit date
Latest commit History 196 Commits
modules		modules
simulation/modelsim		simulation/modelsim
spec		spec
testcode		testcode
.gitattributes		.gitattributes
.gitignore		.gitignore
README.md		README.md
Tcl_script1.tcl		Tcl_script1.tcl
arbiter.sv		arbiter.sv
arbiter_control.sv		arbiter_control.sv
arbiter_datapath.sv		arbiter_datapath.sv
control_rom.sv		control_rom.sv
d_cache.sv		d_cache.sv
d_cache_control.sv		d_cache_control.sv
d_cache_datapath.sv		d_cache_datapath.sv
datapath.sv		datapath.sv
divider.bsf		divider.bsf
divider.qip		divider.qip
divider.v		divider.v
divider_bb.v		divider_bb.v
eviction_write_buffer.sv		eviction_write_buffer.sv
ewb_control.sv		ewb_control.sv
ewb_datapath.sv		ewb_datapath.sv
i_cache.sv		i_cache.sv
i_cache_control.sv		i_cache_control.sv
i_cache_datapath.sv		i_cache_datapath.sv
l2_cache.sv		l2_cache.sv
l2_cache_control.sv		l2_cache_control.sv
l2_cache_datapath.sv		l2_cache_datapath.sv
lc3b_types.sv		lc3b_types.sv
lc3x_conv_tool.py		lc3x_conv_tool.py
lru_stack.sv		lru_stack.sv
magic_memory.sv		magic_memory.sv
magic_memory_dp.sv		magic_memory_dp.sv
memory.sv		memory.sv
mp3.out.sdc		mp3.out.sdc
mp3.qpf		mp3.qpf
mp3.qsf		mp3.qsf
mp3.sv		mp3.sv
mp3_nativelink_simulation.rpt		mp3_nativelink_simulation.rpt
mp3_tb.sv		mp3_tb.sv
multiplier.bsf		multiplier.bsf
multiplier.qip		multiplier.qip
multiplier.v		multiplier.v
multiplier_bb.v		multiplier_bb.v
multiply_test.asm		multiply_test.asm
physical_memory.sv		physical_memory.sv
test-o-matic		test-o-matic
testing.asm		testing.asm
victim_cache.sv		victim_cache.sv
victim_cache_control.sv		victim_cache_control.sv
victim_cache_datapath.sv		victim_cache_datapath.sv

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J.Z.-Wentworth-Cache-Now

Basic Design

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