Viewing Issue Advanced Details
|ID||Category [?]||Severity [?]||Reproducibility||Date Submitted||Last Update|
|07308||Known Issues/To-Do's||Minor||Always||Apr 29, 2019, 01:58||20 days ago|
|Tester||star2root||View Status||Public||Platform||MAME (Self-compiled)|
|Version||0.209||Fixed in Version||0.231||Build|
|Fixed in Git Commit||c6c0f2f||Github Pull Request #|
|Summary||07308: trs80m4: The TRS-80 Model IV will not boot any Model IV disks, only Model III disks.|
The TRS-80 Model III is actually working pretty well and is booting most DOS's in IMD format and seems to support double density disks.
The TRS-80 Model IV boots the same disks as the model III, but I can't get it to load any model IV OS in any format, only Model III disks.
This is apparently a known problem, as it is documented in the source code, but there is not bug open for it here that I could find.
|Steps To Reproduce||Attempt to boot a TRS-80 Model IV OS disk in any format on the TRS-80 Model IV emulation.|
|Affected Sets / Systems||trs80m4|
|There are no relationship linked to this issue.|
Apr 30, 2019, 10:56
|When there's a note in the source you don't need a bug report here too. That's just wasteful duplication.|
Apr 30, 2019, 14:54
|At one time, Fujix and I (mostly Fujix) got a good 30-40% of source bugs placed on MT. But, after dozens of versions of releases and multiple times where a bug was fixed and the MT bug was not even handled/acknolwedged here by the developer fixing the bug or noted by anyone else - we decided to discontinue wholesale use of the KNOWN issues category. I don't mind it being used occassionally, esp on machines which have active developers.. Just don't make a habit of reporting known things plainly listed in source files. As Robbbert said, it can be wasteful for the time of everyone involved.|
May 4, 2019, 21:13
Reporting it allows:
Me and other people to be notified of progress, discussion, and when the issue is fixed.
Gives us a place to discuss what might be causing the problem, and the feasibility of potential fixes.
A mere note in the code does not accomplish that. I tend to track anything I post as well, and if I see it's been fixed I update my posting here on the issue.
Any idea what the root cause of this issue is? Is it a disk format handling issue, or other missing functionality of the model 4 that causes it to fail to boot? Did it ever work or is this a regression?
Apr 3, 2021, 18:19
|Please note that booting of TRSDOS 6 will work, but it will only accept years 80 to 87.|
21 days ago
|I have tried TRSDOS6, LDOS, and a few other. None boot. Rapid DOS displays some text and hangs. Have there been any updates on this?|
20 days ago
edited on: 20 days ago
|They all work since April 3.|