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ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
08790 Misc. Minor Always Nov 19, 2023, 11:15 31 days ago
Tester VasiliyFamiliya View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS Windows 10/11 (64-bit)
Status [?] Confirmed Driver
Version 0.260 Fixed in Version Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 08790: lostwsga: In memory test, the game recognize the all program roms besides CROM as "bad".
Description Can it be related with a various graphical bugs and crashes?
Steps To Reproduce Go to the service mode, choose a memory test in menu, and just wait till the content of attached screenshot will be shown. Don't scare the long black screen time and grey pixels mashup a little later.
Additional Information Supermodel doesn't find any errors in roms, althought uses absolutely same set.
Github Commit
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Regression Version
Affected Sets / Systems lostwsga
Attached Files
png file icon 0000.png (2,780 bytes) Nov 19, 2023, 11:15 Uploaded by VasiliyFamiliya
VasiliyFamiliya
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Notes
9
User avatar
No.21842
Hydreigon
Tester
Nov 19, 2023, 16:51
edited on: Nov 20, 2023, 01:47
I honestly didn't know what I was talking about when I first mentioned VROMs but I decided to take a second look (was in a bit of a rush last morning). IC1-16 are all the banked CROMs (according to Supermodel) and have the correct load locations. lemans24 has the same exact memory test as lostwsga and marks the exact same CROMs as bad too.
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No.21849
Robbbert
Senior Tester
Nov 21, 2023, 10:05
Confirmed.

lemans24 doesn't have IC13/14/15/16 in its memory test.
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No.21853
VasiliyFamiliya
Tester
Nov 22, 2023, 03:16
By the way, Ocean Hunter internal memory test marks as bad for this time already all VROMs and IC17 and 18 EPROMs, althought most CROMs are "good".
User avatar
No.21966
Osso
Moderator
Feb 15, 2024, 19:10
lostwsga, lemans24 and their clones call banks 0x08-0x0f instead of 0x00-0x07, so they find nothing and test fails. By moving the CROM1-4 ROMs up 0x4000000 each you get the game to pass the test and lostwsga gains GFX, too.
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No.21974
VasiliyFamiliya
Tester
Feb 21, 2024, 10:22
Then why nobody had been edit a loader code for these games yet?
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No.21976
Osso
Moderator
Feb 22, 2024, 16:47
cause that would be a workaround and probably not the right way to fix it.
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No.21977
VasiliyFamiliya
Tester
Feb 23, 2024, 09:09
Maybe, Riot City ROM test fail can be caused by banking issues too?
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No.21980
Osso
Moderator
Feb 23, 2024, 20:08
IIRC Kale determined it's due to a bad dump
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No.22017
VasiliyFamiliya
Tester
31 days ago
[quote]cause that would be a workaround and probably not the right way to fix it.[/quote]

Archived video by links below can say even more - that it's even NOT a way to fix it: athought game passes a memory test and get able to show a GFX besides the stump of "Insert Coin" label, the fore layers of tilemap are turing out to be garbaged, and the game itself all the same crashes soon - for this time bacause of "Fatal error: LSI53C810: Invalid SCRIPTS DMA opcode DF2B9480 at 001A2C50".

https://www.mirari.fr/gKAl
https://www.mirari.fr/MsOt