MKDIR/SUBDIR no longer working

[nobruinfo]

Test Environment (required)
You can use MEGA65INFO to retrieve this.

• Platform: xemu
• ROM Release: 920406 for what is shown here, 920408 also reported
• Core Commit:

Describe the bug

Depending on the steps used either nothing is happening on CHDIR or what is shown.

To Reproduce

Expected behavior

The contents of the sub-partition should be shown.

Screenshots

Additional context

[dansanderson]

CHDIR to a D81 sub-partition fails. On real hardware, it reports DOS error 66: Illegal Track or Sector. On Xemu, it fails silently.

To Reproduce
On hardware:

1. Open Freezer.
2. Select virtual drive 8.
3. Create a new disk image, give it a name.
4. Exit to BASIC.
5. DIR : confirms that the new disk image is mounted and in the root partition.
6. MKDIR "SUBDIR",L5

Expected: Creates and changes to the SUBDIR partition.
Actual:

• Creates SUBDIR partition, but fails to change to it, reporting 66,ILLEGAL TRACK OR SECTOR,10,00
• DIR shows the SUBDIR is created.
• CHDIR "SUBDIR" also reports 66,ILLEGAL TRACK OR SECTOR,10,00

On Xemu:

1. Open menu, Disks / Cart > Drive 8 > Create and attach new D81. Give it a name.
2. DIR : confirms that the new disk image is mounted and in the root partition.
3. MKDIR "SUBDIR",L5

Expected: Creates and changes to the SUBDIR partition.
Actual: No error. DIR confirms still at the root.

[lgblgblgb]

Dunno, but with Xemu it also gives me the 66,ILLEGAL TRACK OR SECTOR,10,00 error.

[dansanderson]

The missing error message might be specific to ROM 920395 actually, and maybe not Xemu specific. I'll need to test in more detail. IIRC there's an improvement in DOS error reporting in recent ROM betas.