Search results

@JTRetro Thanks for posting the video! My next step is going to be to develop a control panel and hardware-software interface to allow the slowdown parameters to be adjusted. I'm not sure if I will be able to retain this in the final version, since it may be budgeted out of the CPLD chip if more...

@JDW This the double bong problem is so puzzling. Does it reliably continue to happen after the WarpSE is removed unless you wait for a while? I suggest maybe to test this that you go back to version 0.6b or 0.6a and see if it continues to happen. By the way, 0.6c, 0.6d, 0.6e, and 0.6g are not...

@JDW thank you for your hard work testing! Your diligence is really impressive and it is greatly appreciated. These are very strange symptoms! Frustrating that the double bong issue is happening on your main board too. What could be the cause of this?? Were both boards using that new power...

Another update! Unfortunately due to a stupid oversight 0.6g was totally broken. Issue fixed and now we have 0.6h which is attached. @JDW I just tried 0.6f and 0.6h with my Floppy Emu and could not reproduce the issue you're having with the double bong. Hmm...

@JDW very interesting and strange behavior! I think there is only one answer. Something is triggering the initialization sequence to occur twice, once at power-on and once later. Below is the code for the initialization sequence: First there's nPOR (negative power-on reset). This signal is...

Arghh!! More false positives from Windows Defender antivirus on 0.6g. I have just submitted the latest 0.6g updater .exe file to Microsoft as a false positive. Let me know if you have any issues running the program. Ooh one more thing on the subject of viruses. Looking at the Disinfectant about...

@JDW Here is firmware 0.6g! Let me know how it is after you record the sound on 0.6f. Hopefully there will be no sound regressions.

A bit about the project and verification status. In the CPLD there are five main subsystems: FSB: "fast-speed bus" or maybe "front-side bus" to borrow Intel's old terminology. This module controls the 25 MHz bus internal to the WarpSE card. Mainly it is concerned with looking at the /AS signal...

@JDW Thanks for your help testing!! I think the mouse issues may be related to the additional 16 fixed wait state sound slowdown function. Looking back at the thread, I think the mouse issues were highly correlated to whether the version you were testing had extra sound slowdown. I will have...

Thanks for your help!! And there's no longer any need to power up and down a bunch of times or wait between power cycles to check for the failure to POST. There were various issues causing that in previous versions and I think they have all been rectified if indeed @JTRetro's issues were due to...

Aha!! So maybe the bars issue you were seeing at powerup was from your PSU. If that's the case then I think I all of the power-on issues have been accounted for. What version are you on currently?

Thanks for all your hard work testing!! Okay so there seem to be four remaining issues/symptoms: Boot failure -- sometimes the system displays bars on boot. There has been several causes for this. 0.6a, b, c, d, and e all had their own independent issues causing this. Maybe it's fixed now...

Thanks for the info! I know some people just use a 16 MHz crystal, which I am skeptical of

When the Mac boots up, the RAM contents and thus the screen contents are undefined. Until the 68k runs code to clear the screen, it'll look like that. What you're seeing is the uninitialized contents of RAM. If you power on and let the Mac draw something, then power off and on quickly while...

@JTRetro @ppuskari @JDW Thanks for all your hard work testing!! Attached is the latest firmware, 0.6f! 0.6e fixed some problems but also introduced some other ones. I just now finished 0.6f which fixes multiple timing issues. I've tried this on two prototypes and three MC68HC000 CPUs and it's...

@JDW Never mind lol I think I just forgot to unplug the USB cable, which forces the Mac into reset hahahah. 0.6e I just posted should be good!

Hmm wait a minute! Now it's not working for me again... Let me look into this further.

@JDW Hmm, well finally I am able to replicate the problem and this made it much easier to find! New firmware version 0.6e is attached which should fix the problem. If you have time, try this instead of 0.6c or 0.6d. Thanks again for all your help testing!

Yes, since this is the only one you could get to boot at all. Then if the screen is showing bars, check the reset signal voltage as I described in my earlier post. I may however have a new firmware update within the next 1-2 hours with a possible fix for this issue. Since the new initialization...

Hmm... testing has not been going as smoothly as I think we all have hoped. It's super frustrating that I cannot replicate the problem when starting up. At least 0.6b has been stable for @JDW. I am gonna have to clear off my workbench at home (as opposed to at the GW lab) and get all my Mac SE...