| Rev |
Log message |
Author |
Age |
Path |
| 27 |
Added a few ALU opcodes and came across a weird propogation delay issue with my registerfile.
As a workaround, I'm trying to use falling_edge instead of rising_edge. We shall see if I regret this later |
earlz |
4413d 15h |
/tinycpu/trunk/ |
| 26 |
Added extra check to make sure fetcher works properly after memory write |
earlz |
4413d 17h |
/tinycpu/trunk/ |
| 25 |
Wait for memory state now works as expected, and opcode `mov [reg], immd` works now |
earlz |
4413d 21h |
/tinycpu/trunk/ |
| 24 |
Good news, mov to IP actually works as expected! |
earlz |
4414d 14h |
/tinycpu/trunk/ |
| 23 |
Added top module for testing how our memory and cpu will work together. (hint: success)
Messing around with a small timing issue in core |
earlz |
4414d 15h |
/tinycpu/trunk/ |
| 22 |
Added to process sensitivity list to avoid warning and added ELSE for IR so it doesn't generate a latch |
earlz |
4415d 06h |
/tinycpu/trunk/ |
| 21 |
The core_tb testbench finally passes. It probably doesn't synthesize, or even pass other testbenches, but it passes that one damn it. |
earlz |
4415d 07h |
/tinycpu/trunk/ |
| 20 |
fuck it. All sorts of broken, will try to fix it tomorrow |
earlz |
4416d 06h |
/tinycpu/trunk/ |
| 19 |
Got beginning of core/decoder for the CPU |
earlz |
4416d 08h |
/tinycpu/trunk/ |
| 18 |
Finished memory controller |
earlz |
4419d 18h |
/tinycpu/trunk/ |
| 17 |
Added fetch component for fetching from memory to instruction register
Added additional testing for carryover to make sure it's correct |
earlz |
4420d 07h |
/tinycpu/trunk/ |
| 16 |
Renamed incdec to carryover (see design for why).
carryover should be done, though may change the "straight through on disable" behavior to instead leaving it floating depending on how things go later with coding. |
earlz |
4423d 10h |
/tinycpu/trunk/ |
| 15 |
Added README, LICENSE, and the (so far not created) incdec component |
earlz |
4425d 07h |
/tinycpu/trunk/ |
| 14 |
Added ALU with all the operations we'll need. Synthesizes as well trivially |
earlz |
4425d 15h |
/tinycpu/trunk/ |
| 13 |
Forgot about the new library I added |
earlz |
4425d 18h |
/tinycpu/trunk/ |
| 12 |
registerfile has ports for every register now
makefile now uses GHW file format for gtkwave instead of VCD |
earlz |
4425d 19h |
/tinycpu/trunk/ |
| 11 |
Finally, it synthesizes to BRAM.. Possibly need to fix how the DataOut syncs with WriteEnable and Address though if I plan to both read and write on the same clock edge |
earlz |
4429d 08h |
/tinycpu/trunk/ |
| 10 |
Just committing so I can keep this original that passes simulation, but still synthesizes to LUTs |
earlz |
4429d 08h |
/tinycpu/trunk/ |
| 9 |
Trying to add a byte-enable to the RAM. Used Xilinx's template for it, but ghdl won't pass the testbench |
earlz |
4429d 16h |
/tinycpu/trunk/ |
| 8 |
Added blockram for inferring actual block RAM.
Now we need a memory controller, not a crappy memory emulation thing |
earlz |
4430d 15h |
/tinycpu/trunk/ |
| 7 |
Changed memory to fix bound check error
Decreased size of RAM since 4096 bytes of RAM would require an FPGA with more than 32K flip-flops (mine has ~4000) |
earlz |
4430d 17h |
/tinycpu/trunk/ |
| 6 |
Reworked memory code to hopefully synthesize better |
earlz |
4430d 21h |
/tinycpu/trunk/ |
| 5 |
Modified registerfile to be dual-port for both read and write |
earlz |
4431d 08h |
/tinycpu/trunk/ |
| 4 |
Added internal memory interface
Updated design |
earlz |
4431d 16h |
/tinycpu/trunk/ |
| 3 |
Updated registerfile to have 2 read ports
Added super rough design document mainly just for brainstorming |
earlz |
4432d 08h |
/tinycpu/trunk/ |
| 2 |
Initial commit |
earlz |
4432d 09h |
/tinycpu/trunk/ |
| 1 |
The project and the structure was created |
root |
4432d 12h |
/tinycpu/trunk/ |
