EGS Z3 RTG Display Corruption

superfrog · 07 December 2019, 00:39

I'm getting display corruption with 2 out of the 3 emulated EGS-based RTG boards when used in Z3 bus mode. Boot into the Piccolo or 28-24 Spectrum configs (not the Piccolo SD64) using the supplied HDF images with EGS pre-installed. Start either the Clock or FPlotter programs, whose icons have been "left out" on the desktop for easy testing

and try moving the windows off-screen or over the title bar, you will see that the windows "leave trails" behind them. Also, the FPlotter window, if dragged partially off-screen, fails to have its contents refreshed once it is dragged back on-screen. The Clock doesn't have this issue, presumably because it is actively redrawn every second, but its window still leaves trails over the title bar and other windows. Other EGS apps exhibit similar behavior.

The Piccolo SD64 Z3 does not have these issues. Switching the boards to Z2 I/O makes the display corruption go away. I tested with WinUAE 4.2.1 and 3.0.0 and got the same behavior with both versions.

http://eab.abime.net/zone/EGS%20Z3%2...0Corruption.7z

Toni Wilen · 07 December 2019, 12:02

EGS being what it is, I can't trust these results (they could be "correct") without real hardware results using exact same HD and config.

It also could be usual CL blitter problem but debugging it will be really painful..

07 December 2019, 00:39	#1
superfrog Registered User Join Date: Jun 2015 Location: San Francisco, USA Posts: 168	EGS Z3 RTG Display Corruption I'm getting display corruption with 2 out of the 3 emulated EGS-based RTG boards when used in Z3 bus mode. Boot into the Piccolo or 28-24 Spectrum configs (not the Piccolo SD64) using the supplied HDF images with EGS pre-installed. Start either the Clock or FPlotter programs, whose icons have been "left out" on the desktop for easy testing and try moving the windows off-screen or over the title bar, you will see that the windows "leave trails" behind them. Also, the FPlotter window, if dragged partially off-screen, fails to have its contents refreshed once it is dragged back on-screen. The Clock doesn't have this issue, presumably because it is actively redrawn every second, but its window still leaves trails over the title bar and other windows. Other EGS apps exhibit similar behavior. The Piccolo SD64 Z3 does not have these issues. Switching the boards to Z2 I/O makes the display corruption go away. I tested with WinUAE 4.2.1 and 3.0.0 and got the same behavior with both versions. http://eab.abime.net/zone/EGS%20Z3%2...0Corruption.7z Attached Thumbnails

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07 December 2019, 12:02	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,505	EGS being what it is, I can't trust these results (they could be "correct") without real hardware results using exact same HD and config. It also could be usual CL blitter problem but debugging it will be really painful..

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