Search found 264 matches

by HPMike
Sun Jan 16, 2022 5:36 pm
Forum: DM42
Topic: DM42 User Manual errata
Replies: 1
Views: 146

DM42 User Manual errata

I have found the following errata in the DM42 User Manual:

Page 3, Section 2.4 - STATE - .s42 should be .f42

Page 13, Section 5.3.1 - Load State - .s42 should be .f42

Page 13, Section 5.3.2 - Save State - .s42 should be .f42

Please incorporate into the next version of the DM42 User Manual.
by HPMike
Sun Jan 16, 2022 3:22 pm
Forum: Hardware issues
Topic: FAT Disk is kaput
Replies: 12
Views: 357

Re: FAT Disk is kaput

What I find so mysterious is how it went from being completely bad to completely good. If this were a hard disk drive, once a portion of the surface goes bad, it remains bad forever and cannot be resurrected. If the sector containing the root directory goes bad (i.e. what Unix calls the superblock)...
by HPMike
Sun Jan 16, 2022 3:11 pm
Forum: Hardware issues
Topic: FAT Disk is kaput
Replies: 12
Views: 357

Re: FAT Disk is kaput

Well, unfortunately, the FAT disk is broken again. Michael S has offered to send me a replacement PCB. He thinks the problem is either a faulty flash memory chip or flash controller of the CPU. At least I've managed to back up all my programs to my PC and install a fresh battery in the DM42, so memo...
by HPMike
Sun Jan 16, 2022 5:01 am
Forum: Hardware issues
Topic: FAT Disk is kaput
Replies: 12
Views: 357

Re: FAT Disk is kaput

There is no (permanent) harm in letting the PC attempt to repair the corruption when it detects and reports it, but most often, some files are lost (the ones that are damaged, even if you don't know they are). On the other hand, ignoring the warning will just to lead to more corruption, possibly af...
by HPMike
Sat Jan 15, 2022 5:00 pm
Forum: Hardware issues
Topic: FAT Disk is kaput
Replies: 12
Views: 357

Re: FAT Disk is kaput

When the PC warns of errors, it definitely needs to be corrected, as it is detecting the 'dirty bit' on the drive has been set and needs correction via chkdsk (logical) repairs. If logical damage is ignored, the corruption is exacerbated and can damage all your data. It is still quite strange that ...
by HPMike
Sat Jan 15, 2022 6:39 am
Forum: Hardware issues
Topic: FAT Disk is kaput
Replies: 12
Views: 357

Re: FAT Disk is kaput

Well, what do you know ! I tried running the FAT Disk Media Test again, and this time it worked reporting no bad blocks and successfully reformatted the drive. I then connected successfully to my PC with no errors, and recopied all the data back to the FAT disk. Any programs in memory that had not b...
by HPMike
Sat Jan 15, 2022 4:52 am
Forum: Hardware issues
Topic: FAT Disk is kaput
Replies: 12
Views: 357

Re: FAT Disk is kaput

Did you format the FAT disk from the PC or using the system menu on the DM42? If not the latter, please try that as formatting results are not exactly the same; the device has knowledge of the h/w underlying the emulated disk, whereas a PC will treat it as simple media. It MAY make a difference. Pl...
by HPMike
Fri Jan 14, 2022 10:13 pm
Forum: Hardware issues
Topic: FAT Disk is kaput
Replies: 12
Views: 357

Re: FAT Disk is kaput

Email sent.
by HPMike
Fri Jan 14, 2022 8:47 pm
Forum: Hardware issues
Topic: FAT Disk is kaput
Replies: 12
Views: 357

FAT Disk is kaput

Today, I turned on my DM42, and when I attempted to back up my state file before replacing the battery, I got an error that the /State directory could not be found. I then attempted to load a program and got an error that the /Programs directory could not be found. I then attempted to connect to my ...
by HPMike
Wed Oct 06, 2021 11:38 pm
Forum: DM42
Topic: DM42 Deluxe Edition or Limited Edition
Replies: 7
Views: 2066

Re: DM42 Deluxe Edition or Limited Edition

My biggest problem with the DM42 is that the keyboard on the early versions is very high effort, and the inability or unwillingness of SM to make a kit available to retrofit the newer much better keyboard that is used in the current version. :x