Search found 9 matches

by laxer3a
March 4th, 2020, 2:10 am
Forum: Work Logs & Projects
Topic: FPGA Recreation of the GPU/GTE/MDEC
Replies: 16
Views: 29734

Re: FPGA Recreation of the GPU/GTE/MDEC

Hey, we are in March now ! :-) Sure I'd like to hear your stuff, and be glad to be in touch ! For the repos, here we are : SPU : https://github.com/Laxer3a/MDEC/tree/SPU_master MDEC : https://github.com/Laxer3a/MDEC/tree/MDEC_master GPU : https://github.com/Laxer3a/MDEC/commits/SIMPLE_PALETTE Branch...
by laxer3a
September 8th, 2019, 8:44 pm
Forum: Research
Topic: Playstation CPU reversing [56k Warning]
Replies: 68
Views: 192299

Re: Playstation CPU reversing [56k Warning]

Hi ! Bumping the thread a bit. I have a question about RLE stream in MDEC. Logically the stop condition is FE00 (OEB = End Of Block) or index reach 63. I am sorry but I have hard time finding the adder (curr index = prev index + 1 + offset) stuff in this schematics from the page 2 of this thread : h...
by laxer3a
September 2nd, 2019, 6:43 pm
Forum: Work Logs & Projects
Topic: FPGA Recreation of the GPU/GTE/MDEC
Replies: 16
Views: 29734

Re: FPGA Recreation of the GPU/GTE/MDEC

Maybe here you will find some necessary information. What you are doing is a very interesting project. https://github.com/led02/psx_fpga Oh yeah, I have seen this too. One of my friend is trying to get it running on a board... But their design has many flaws, implementation is incomplete too I thin...
by laxer3a
September 2nd, 2019, 6:35 pm
Forum: Work Logs & Projects
Topic: FPGA Recreation of the GPU/GTE/MDEC
Replies: 16
Views: 29734

Re: FPGA Recreation of the GPU/GTE/MDEC

Hi ! Oh I see, well, it is not a financial issue. :-) I have spent quite some money on HW stuff for various projects. The thing is that I am married, have kid and family to take care of, a quite busy SW engineering job, and then finally my free time. My most precious resources is time. :-P Yeah, I c...
by laxer3a
August 31st, 2019, 10:35 pm
Forum: Work Logs & Projects
Topic: FPGA Recreation of the GPU/GTE/MDEC
Replies: 16
Views: 29734

Re: FPGA Recreation of the GPU/GTE/MDEC

Sorry ? My GOAL is to recreate the hardware in FPGA ! Why would I not use a FPGA board !? I'm just asking for some people if they have info or would like to join and help me when I am stuck on some specification detail when it is not well defined, by writing a piece of code and check it on real HW a...
by laxer3a
August 31st, 2019, 4:32 pm
Forum: Work Logs & Projects
Topic: FPGA Recreation of the GPU/GTE/MDEC
Replies: 16
Views: 29734

Re: FPGA Recreation of the GPU/GTE/MDEC

One more comment : "Your project requires knowledge from the most dedicated: Emu devs with hardware research focus. I bet your best chance to reach them will be exactly here on this forum." Actually no it isn't, I would take any help from any psx dev knowing how to use properly the hardwar...
by laxer3a
August 31st, 2019, 2:41 am
Forum: Work Logs & Projects
Topic: FPGA Recreation of the GPU/GTE/MDEC
Replies: 16
Views: 29734

Re: FPGA Recreation of the GPU/GTE/MDEC

Hi. I know pgate1 and I have met him IRL a few month ago actually ;-). I even convinced him to put his things open source ! But he uses a very obscure HDL language. To show my commitment to the project you can already look at my GitHub ( https://github.com/Laxer3a/MDEC ) I will update it in a few da...
by laxer3a
August 27th, 2019, 3:24 am
Forum: Work Logs & Projects
Topic: FPGA Recreation of the GPU/GTE/MDEC
Replies: 16
Views: 29734

Re: FPGA Recreation of the GPU/GTE/MDEC

@rama3 Thanks for taking care and answering me. What would you think would be best : 1/ Seperate post per tech question ? 2/ Bump this thread ? (A lot easier for me...) All my question are from a HW designer perspective (and particularly my HW implementation, as I try to optimize the design to be as...
by laxer3a
August 25th, 2019, 6:08 am
Forum: Work Logs & Projects
Topic: FPGA Recreation of the GPU/GTE/MDEC
Replies: 16
Views: 29734

FPGA Recreation of the GPU/GTE/MDEC

Hi , I have registered here, launching my little bottle at the sea, hoping for somebody to be able to answer my questions. I have been working for a few months now on my free time to recreate in FPGA the PSX chips. While full integration is not done yet, the core stuff is starting to take a good sha...