WHDLoad MantisBT - Z-Out
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0003125Z-Out[WHDLoad Installs Games] slavepublic2015-01-02 17:052018-05-07 09:09
Assigned ToJOTD 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
ChipMem2 MB
FastMem0 MB
WorkbenchOS 3.0
KickROM40 - Kick 3.1
Summary0003125: Z-Out highscore list doesn't work on WinUAE
DescriptionI don't know if this is the right place to report this as I don't know if it's a whdload problem or a WinUAE bug, but here goes: Z-Out's highscore list works on my real Amiga, but it doesn't work on WinUAE. I have tried a few different WinUAE-configurations, but the highscore list is always broken. The shown letter doesn't correspond with the highlighted small letter, it's difficult to choose OK and Z-Out thinks the disk is write-protected (when it's not!). Thanks!
Tagsuae problem
has duplicate 0003459closed JOTD Wrong Hi-Score editing positioning 
Attached Files

2015-01-02 17:15   
Are you using lastest slave version? Because there were fixes regarding the highscores.
2015-01-03 10:03   
I'm using the latest WHDLoad version (18) and the latest slave version (3.3) on both WinUAE and on real hardware. So I was surprised to notice that it works on one but not on the other. I changed WinUAE's chipset settings, memory settings, everything - the highscore list stays broken.
2015-01-03 12:08   
I would recommend to ask at http://eab.abime.net/forumdisplay.php?f=5 because it seems to be a uae only problem.
2015-01-03 15:29   
OK then, thanks!
2018-04-30 23:57   
(Last edited: 2018-04-30 23:58)
I've tested on WinUAE and I confirm the issues.

- hiscore positionning is off by 4 chars
- disk seen as write protected
- also stars are not that random and the effect is lame

works on the real machine (what the hell!!)

2018-05-06 17:58   
(Apparently I was never contacted)

Title screen has multiple problems:

- Advantec logo is horizontally shifted if OCS Agnus (Original game works exactly opposite, it is only correct if OCS Agnus. So "Advantec logo recentered" broke it if OCS Agnus)
- small text writer is 1 scanline too low if ECS/AGA.
- small text writer is horizontally shifted if ECS and only if ECS Agnus.

All problems are caused by buggy copperlist that enables/disables bitplane DMA when DMA is about to start. This causes side-effects and OCS/ECS behave differently in this situation.

Fix probably is as simple as moving DMACON bitplane disable copper MOVEs horizontally to earlier position. WinUAE handles these 100% correctly, just change chipset type on the fly to see the difference.

And finally, AGA side-effects apparently are not exactly same as ECS because real AGA hardware shows small text writer in horizontally correct "OCS" position (but still 1 line too low). Unfortunately there are multiple reasons that can cause this difference and I can't be sure which exactly causes it (without breaking anything that shouldn't break) without more testing first.


Write protection issue is almost guaranteed to not be directly emulation related.

Stars: use more accurate CPU mode?
2018-05-06 22:08   
Toni I was about to post something on EAB about this, but in the meanwhile I ran the cracked version with WinUAE and no star issue (didn't test the rest)

Your explanations are invaluable, and I realize now that at least the "advantec center logo" fix shouldn't be applied when OCS Agnus

found some code on EAB: http://eab.abime.net/showthread.php?t=72300 to detect AGA.

The stars are (more) random once you played a game and lost. I'd prefer fixing this in the whdload slave, but that's probably too much work.
2018-05-07 09:09   
It probably is best to fix the copper list so that it works with all chipsets without separate chipset-specific fixes. I can do it while trying to understand whats the (previously not known) difference between ECS and AGA. This game is good test case :)

Star field probably uses usual stupid read $dff006 for generating "random" numbers which returns very static numbers if CPU is very fast without chipset DMA slowing it down.

Issue History
2015-01-02 17:05AxelNew Issue
2015-01-02 17:15WeplTag Attached: uae problem
2015-01-02 17:15WeplNote Added: 0004161
2015-01-03 10:03AxelNote Added: 0004166
2015-01-03 12:08WeplNote Added: 0004168
2015-01-03 15:29AxelNote Added: 0004170
2017-02-26 23:07JOTDStatusnew => assigned
2017-02-26 23:07JOTDAssigned To => JOTD
2018-04-30 23:57JOTDNote Added: 0006188
2018-04-30 23:57JOTDStatusassigned => confirmed
2018-04-30 23:58JOTDNote Edited: 0006188bug_revision_view_page.php?bugnote_id=6188#r934
2018-04-30 23:58JOTDRelationship addedhas duplicate 0003459
2018-05-06 17:58twilenNote Added: 0006190
2018-05-06 22:08JOTDNote Added: 0006191
2018-05-07 09:09twilenNote Added: 0006194