Viewing Issue Advanced Details
|ID||Category [?]||Severity [?]||Reproducibility||Date Submitted||Last Update|
|08201||Gameplay||Major||Always||Feb 5, 2022, 14:18||Apr 5, 2023, 09:09|
|Tester||kunikuni||View Status||Public||Platform||MAME (Official Binary)|
|Assigned To||hap||Resolution||Fixed||OS||Windows 10/11 (64-bit)|
|Version||0.240||Fixed in Version||0.241||Build||64-bit|
|Fixed in Git Commit||8cc6459||Github Pull Request #|
|Summary||08201: mrdo, mrdoy, mrdobl, yankeedo: After the "EXTRA" demo, only the "E" turns gray and the others remain yellow.|
After the "EXTRA" demo, only the "E" turns gray and the others remain yellow.
Please watch the video as it is difficult to explain.
|Steps To Reproduce||Please collect "EXTRA".|
|Additional Information||The bug video is here: https://mega.nz/file/AB1i3AzA#tnmEjvZc65sRUVa2DIACKqUOms1vr-u5aBd9cQ7ypJI|
|Affected Sets / Systems||mrdo, mrdoy, mrdobl, yankeedo|
|There are no relationship linked to this issue.|
Feb 5, 2022, 22:32
if this started happening only in the latest version it's almost certainly
Feb 6, 2022, 00:38
edited on: Feb 6, 2022, 00:39
The equations converted to C++ are correct.
The file was added here: https://github.com/mamedev/mame/commit/5ddd0069199e3a7bcb67f81cef15bd1ec76e8c1f
Maybe the culprit is a bad PAL(GAL) file, I don't know where AJR obtained it from.
Another one was added by Clawgrip later:
ROM_LOAD( "u001_pal16r6cn.j2", 0x0000, 0x0104, CRC(84dbe498) SHA1(5863342b2db85ffef31b5e9ce26bfd8fca9923b0) )
jedutil shows this for Clawgrip's dump:
weird, no equations for 13,14,15?
jedutil -view u001_pal16r6cn.j2 pal16r6
2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14, 15, 16, 17, 18, 19
13 (Registered, Output feedback registered, Active low)
14 (Registered, Output feedback registered, Active low)
15 (Registered, Output feedback registered, Active low)
16 (Registered, Output feedback registered, Active low)
17 (Registered, Output feedback registered, Active low)
18 (Registered, Output feedback registered, Active low)
rf13.oe = OE
rf14.oe = OE
rf15.oe = OE
/rf16 := /rf16 +
rf14 & rf17 +
rf14 & /rf16 & rf17 +
rf14 & /rf15 & rf17 & /rf18 +
rf13 & rf14 & /rf15 & /rf16 & rf17 & /rf18
rf16.oe = OE
/rf17 := i2 & /i5 +
i2 & /i3 & i4 & /i5 & rf17 +
i2 & i3 & /i4 & /i5 & /rf14 & /rf17
rf17.oe = OE
/rf18 := /i7 & /i8 & /i9 & /rf15 & /rf18 +
rf14 & rf17 +
rf13 & rf14 & rf17 & /rf18
rf18.oe = OE
Feb 6, 2022, 00:54
edited on: Feb 6, 2022, 00:56
Quick log from game running in MAME:
lastwritten data _ expected value _ m_pal_u001 value
sequence after EXTRA:
C2_4C_7E NO MATCH
36_2A_7A NO MATCH
6F_66_3E NO MATCH
The latter 2 are very suspicious, since the last written value is the same as the one during attract mode, but it expects a different return value from before. I expect it means that some of the PAL outputs are fed back to the inputs.
Feb 6, 2022, 11:29
The Taito sets nop out the EXTRA protection check.
Maybe the PAL dump is correct for the Taito versions?
Feb 6, 2022, 12:25
|I readded the crazy hack for mrdo, it should be working same like before|
Feb 12, 2022, 16:28
|hap, I have just tested mrdo, mrdoy, mrdobl & yankeedo. I can confirm the issue has been corrected.|
Apr 5, 2023, 07:40
edited on: Apr 5, 2023, 08:22
https://www.mameworld.info/ubbthreads/showthreaded.php?Cat=&Number=395929 is this related or something else?
(actually it makes no sense, given the fix was to restore the old hack behavior?)
Apr 5, 2023, 08:50
Right, if it's a new regression, the regression commit is somewhere else.
I won't be surprised if it's protection related in general.
Apr 5, 2023, 09:09
edited on: Apr 5, 2023, 09:10
|It's definitely odd. I can't reproduce it either, I thought it could be Z80 adjustments breaking it somehow, but then I'd expect more failures. I wonder if it's something the user has done. Anyway, not related to this.|