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[/] [tinycpu/] [trunk/] [docs/] - Rev 39

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Rev	Log message	Author	Age	Path
39	A lot of work in the assembler. It now supports nearly every opcode implemented and is a lot cleaner Added a bootrom. There isn't really a point in testbenching this.. I'm not for sure how I would, and it will change so much in these early days that it'll be pointless I think Everything should be ready to go for a test on actual hardware now!	earlz	4378d 12h	/tinycpu/trunk/docs/
34	Implemented load and store instructions (`mov reg, [reg]` and `mov [reg], reg` respectively)	earlz	4381d 13h	/tinycpu/trunk/docs/
33	Added more test cases for push/pop. More are still needed though Fixed SP increment/decrementing Added new opcode `mov reg,reg` so debugging isn't such a pain	earlz	4381d 17h	/tinycpu/trunk/docs/
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	4382d 14h	/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	4385d 21h	/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	4386d 21h	/tinycpu/trunk/docs/
25	Wait for memory state now works as expected, and opcode `mov [reg], immd` works now	earlz	4387d 03h	/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	4388d 13h	/tinycpu/trunk/docs/
19	Got beginning of core/decoder for the CPU	earlz	4389d 14h	/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	4393d 13h	/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	4396d 16h	/tinycpu/trunk/docs/
14	Added ALU with all the operations we'll need. Synthesizes as well trivially	earlz	4398d 21h	/tinycpu/trunk/docs/
5	Modified registerfile to be dual-port for both read and write	earlz	4404d 14h	/tinycpu/trunk/docs/
4	Added internal memory interface Updated design	earlz	4404d 22h	/tinycpu/trunk/docs/
3	Updated registerfile to have 2 read ports Added super rough design document mainly just for brainstorming	earlz	4405d 14h	/tinycpu/trunk/docs/

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