08138: gberet: Some C64 .tap files needs disk drive to be disabled!

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08138	Media Support	Minor	Always	Nov 23, 2021, 17:37	Dec 27, 2021, 23:10

Tester	demotester	View Status	Public	Platform	MAME (Official Binary)
Assigned To	Steve Coomber	Resolution	Fixed	OS	Windows 10/11 (64-bit)
Status [?]	Resolved			Driver	commodore/c64.cpp
Version	0.238	Fixed in Version	0.239	Build	64-bit
		Fixed in Git Commit	0de9763	Github Pull Request #	#8881

Summary	08138: gberet: Some C64 .tap files needs disk drive to be disabled!
Description	In the c64 cass softlist for some files is mentioned that are not supported! F.e. for "gberet" it is said its not working... its loading but going to black screen after a while.
Steps To Reproduce	To make it work it need all the disk drives to be disabled.
Additional Information	Probably some other files in the list that are currently unsupported might be suffering from the same reason!
Github Commit

Flags
Regression Version
Affected Sets / Systems	gberet

Attached Files

No.19472 kmg Senior Tester Nov 23, 2021, 21:09	Version should be 0.238 for the specific game mentioned. It was just recently added.
No.19473 Steve Coomber Tester Nov 23, 2021, 21:48	That is correct Bob thanks! I can confirm that Green Beret does indeed work if the disk drive is disabled. I have checked the 6 games that failed on my latest pull request no. #8852 and one game (H.E.R.O.) actually does work with the disk drive being disabled. The other 5 still continue to have loading issues. I will check through all of my submissions and promote any others to working status over the next few days. Thanks for pointing this out.
No.19474 Haze Senior Tester Nov 24, 2021, 00:15 edited on: Nov 24, 2021, 00:15	yeah, might want to put usage notes to indicate that for the software known to not like it; it's not uncommon for software to expect additional hardware to be disconnected (some copy protection schemes don't play nice with it, while on other systems it means less memory is available for the games, or the device ROM being executed has shifted an assumed memory layout around)
No.19477 Steve Coomber Tester Nov 24, 2021, 07:21	Thanks David. I was thinking the same thing and I had already added usage notes to PR#8852. I plan to do the same for any others marked as not supported but work with disk drive disabled.
No.19485 Steve Coomber Tester Nov 25, 2021, 14:52 edited on: Nov 25, 2021, 14:55	I have just submitted a pull request to resolve this issue: https://github.com/mamedev/mame/pull/8881 I found 2 more games (flintstn & ghostbsta) that load correctly with the floppy disk drive disabled. Once the PR is merged, this issue can be marked as resolved.
No.19486 Steve Coomber Tester Nov 25, 2021, 18:02	The PR has now been merged so this issue can be set to resolved. Thanks