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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	4548d 23h	/tinycpu/trunk/docs/
34	Implemented load and store instructions (`mov reg, [reg]` and `mov [reg], reg` respectively)	earlz	4552d 01h	/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	4552d 04h	/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	4553d 02h	/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	4556d 08h	/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	4557d 09h	/tinycpu/trunk/docs/
25	Wait for memory state now works as expected, and opcode `mov [reg], immd` works now	earlz	4557d 14h	/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	4559d 00h	/tinycpu/trunk/docs/
19	Got beginning of core/decoder for the CPU	earlz	4560d 01h	/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	4564d 00h	/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	4567d 03h	/tinycpu/trunk/docs/
14	Added ALU with all the operations we'll need. Synthesizes as well trivially	earlz	4569d 08h	/tinycpu/trunk/docs/
5	Modified registerfile to be dual-port for both read and write	earlz	4575d 01h	/tinycpu/trunk/docs/
4	Added internal memory interface Updated design	earlz	4575d 09h	/tinycpu/trunk/docs/
3	Updated registerfile to have 2 read ports Added super rough design document mainly just for brainstorming	earlz	4576d 01h	/tinycpu/trunk/docs/

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