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Post by bjonte on Feb 20, 2017 21:12:19 GMT
I tried to reproduce the problem to give exact details but now it doesn't happen anymore, even after several restarts. What happened before was that the emulator would run at 10-12 Hz when limiting speed and at 200 Hz when not limiting the speed. Something triggered this and I don't know what. I turned speed limit on and off several times then with consistent results. Now when I try it works as expected, 50 Hz when limiting and 200 Hz when not limiting. We'll see if it turns up again later.
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Post by bjonte on Mar 9, 2017 19:01:59 GMT
Ah, I just found a bug in my internal function ROM prior to burning it, thanks to the emulator. VICE didn't emulate capslock but Z64K did!
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Post by willymanilly on Mar 9, 2017 21:12:49 GMT
Ah, I just found a bug in my internal function ROM prior to burning it, thanks to the emulator. VICE didn't emulate capslock but Z64K did! Glad to hear the internal function ROM functionality I just implemented was of some use! There is still are lot of work to be done with the C128 emulator, especially with VDC, Z80, and clock stretching, but it is improving. I have a huge list of features I still want to implement, a lot contributed by Miro, but at the moment I am focusing on core functionality. I have managed to get my hands on a real C128D which should arrive early next week so I'm hoping that will greatly help with benchmarking the emulator against the real thing. I'm currently rewriting the VDC emulation to be able to show all Tokra's images correctly in all modes including multicolour interlace. I hope to have most of it complete by the end of this long weekend.  |
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Post by tokra on Mar 16, 2017 23:17:00 GMT
Great stuff! Finally I can show my interlace-images on an emulator :-) And you implemented VIC-20 NTSC-interlace as well! Fantastic!
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Post by Pyrofer on Mar 17, 2017 11:36:37 GMT
This sounds like it is going to be my go-to test bed when developing for the 128. The poor VDC emulation has really hampered my testing using VICE. If all of Tokra's stuff runs then my stuff should |
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Post by willymanilly on Mar 18, 2017 1:53:03 GMT
The images you have created have been invaluable with me being able to emulate the quirks of the VDC and VIC chips. VIC NTSC interlace was relatively easy to implement compared to the C128 VDC and VIC-IIe. BTW your message prompted me to go back and check the interlaced images on the VIC 20 emulator and I found an error with the reset code which was locking access to the drive after a hard reset that stopped me from being able to view the images. I have fixed that issue now and uploaded a new version of VIC 20 so the interlaced color retina images can be viewed again with no issues if the user used a hard reset instead of a reset when changing screen modes. If any of you have any images you know display on a real c128 but doesn't show in the emulator please send me a copy and I will prioritize trying to support them. I'm still waiting for my 64KB VDC upgrade but I plan to do a lot more thorough testing of the VDC to make the VDC emulation even more accurate than it is now. |
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Post by VDC 8x2 on Mar 18, 2017 18:07:09 GMT
Have you thought of testing your emulator against Freespirit's IPaint?
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Post by willymanilly on Mar 22, 2017 10:05:44 GMT
I haven't used IPaint before but I had a quick look for a copy to test with but I couldn't find an image to download. BTW I've finally improved (actually simplified) the clock stretching in my emulator! The VIC version of Risen From Oblivion displays the all the images and the scrolling message that were previously corrupt at the start of the demo correctly now. |
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Post by VDC 8x2 on Mar 22, 2017 17:00:16 GMT
Here is a copy of the .d64. You could also test Hydro's Basic 7.80 on your emulatior. Attachments:ipaint-128.d64 (170.75 KB)
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Post by willymanilly on Apr 9, 2017 13:51:44 GMT
Here is a copy of the .d64. You could also test Hydro's Basic 7.80 on your emulatior. Thanks for the copy of IPaint. I have greatly improved the interlace mode of my emulator so IPaint displays correctly now and Tokra's VDC-IHFLI and VDC-ITFLI modes display much better! See example of screenshots from emulator. Interlaced text and images seem to work correctly in all programs I have available including VDC Demo. I haven't test Basic 7.8 yet. I probably should open a new thread for testing interlace mode because I've already fixed the clock stretching issue this thread was trying to resolve... VDC-IHFLI
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