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[/] [tinycpu/] [trunk/] [docs/] - Rev 30

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30 After a long weekend of thinking how to do this.. I've decided instead to not strive for a single-cycle computer.
Now, instead, ALU operations will be 2 cycle along with memory operations, and data movement operations are still 1 cycle		 earlz 4461d 11h /tinycpu/trunk/docs/
29 Well, added a testcase for testing the ALU bitwise operations and found a very large problem.
I'm pretty sure that the decoder needs to be partially unclocked because it essentially makes the ALU clocked how it is now, which is very bad.		 earlz 4464d 17h /tinycpu/trunk/docs/
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 4465d 18h /tinycpu/trunk/docs/
25 Wait for memory state now works as expected, and opcode `mov [reg], immd` works now earlz 4465d 23h /tinycpu/trunk/docs/
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 4467d 09h /tinycpu/trunk/docs/
19 Got beginning of core/decoder for the CPU earlz 4468d 10h /tinycpu/trunk/docs/
17 Added fetch component for fetching from memory to instruction register
Added additional testing for carryover to make sure it's correct		 earlz 4472d 09h /tinycpu/trunk/docs/
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 4475d 12h /tinycpu/trunk/docs/
14 Added ALU with all the operations we'll need. Synthesizes as well trivially earlz 4477d 17h /tinycpu/trunk/docs/
5 Modified registerfile to be dual-port for both read and write earlz 4483d 10h /tinycpu/trunk/docs/
4 Added internal memory interface
Updated design		 earlz 4483d 18h /tinycpu/trunk/docs/
3 Updated registerfile to have 2 read ports
Added super rough design document mainly just for brainstorming		 earlz 4484d 10h /tinycpu/trunk/docs/

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