Closed dp111 closed 2 years ago
6502timing1M.ssd on a bbc B with jsbeeb gives the following instruction timing errors which all look like page cross errors during 1MHz clock stretching
On a jsbeeb master with 65C12timing1M.ssd again all the errors look like they are to do with page crossing and 1MHz clock stretching
oh amazing! I can make a test suite out of this (with your permission, if I can embed your SSD in the repository).
The code is a bit too clever for its own good, it tries to "compile" instructions. I bet it'll be a fairly easy fix once I remember how that stuff works too :D
Wow, I'm shocked there's any regular 6502 timing issues left though! wowser :) I figured all the Kevin Edwards protection system stuff would have flushed them out. Awesome!
Actually can probably submodule this in so that everything Just Works Nicely™
version 0.22 at the end of the tests stores the number of failures at &FCD0 so emulators can trap this to detect pass or fail.
On Sun, 28 Aug 2022 at 20:46, Matt Godbolt @.***> wrote:
Actually can probably submodule this in so that everything Just Works Nicely™
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Actually in terms of convenience (not having to get a portable version of beebasm etc etc), would it be OK to build and ship disc images of your timing tests alongside jsbeeb?
No problem.
On Tue, 30 Aug 2022 at 21:19, Matt Godbolt @.***> wrote:
Actually in terms of convenience (not having to get a portable version of beebasm etc etc), would it be OK to build and ship disc images of your timing tests alongside jsbeeb?
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D'oh I should have checked...you already have the ssds in your repo. I'm sorry...nothing to see here please move along
I've created a 6502/ 65C12 instruction timing test suite https://github.com/dp111/6502Timing thread discussing the test suite on stardot. Main errors appear to be in Master emulator with clock stretching ( 65C12timing1M.ssd). I did have a quick look at doing a pull request , but your code is too clever for me :)