On the road of accuracy

**Azimer** · April 15th, 2011, 21:21

Good to hear Hack. That is my intention too except my goals are crazier yet. Perhaps we could have a joint venture if our ideas align.

**Shin_Gouki** · April 15th, 2011, 22:43

Hu? That could be indeed very interesting

**Hacktarux** · April 16th, 2011, 11:40

I am not sure it can be crazier than what i am doing but who knows :-p

A little update on project status: pif rom is executed, and rom boot code too. I am currently working on pi dma.
It may seem very basic but it is quite long to do it the way i'm doing it: the 5 stage pipeline of the r4300 is emulated with some of the subtle details like register bypassing between stages, and all the interlocks and exceptions. It emulates the instruction and data caches as well as the write buffer. I am even trying to measure the cop0 hazards mentioned in the processor user guide. I have tried to measure all timing for peripheral I/O (that is why simple stuff like pi dma can take a long time to implement because i have a lot of measurement to do on real hardware.

**Quvack** · April 18th, 2011, 12:30

That's awesome to hear hack

best of luck with it all!

**ihearpixels** · April 18th, 2011, 13:38

Make sure the RSP is emulated AT LEAST with cycle accuracy.

Don't even bother if its anything less.

**Remote** · April 18th, 2011, 19:42

Sounds exiting!

**weinerschnitzel** · April 19th, 2011, 00:56

Great to hear! I can't wait to see whats next!

**HDL** · April 19th, 2011, 13:38

Will this be cross-platform? I hope there are plans to at least make it portable. Would be sweet.

**ExtremeDude2** · May 1st, 2011, 20:23

Can't wait to see something!

**Remote** · May 2nd, 2011, 21:57

It's more exiting when we don't see anything

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