One other thought I just had. Then testing Backpacks I use a REX Classic mainly for TS-DOS. I have noticed that if I’m typing along too quickly in the TS-DOS menus it will lock up as you describe. To prevent this, I wait until the screen is finished rendering before pressing the next button. For example, if I just pressed F4 to switch from DISK to RAM view I need to wait until the screen is done rendering.
It seems if you press a key at just the right time while TS-DOS is redrawing the menu something odd happens. Sometimes is seems like a key code is caught in the input buffer and keeps getting acted on over and over and over. I have attributed this to an oddity of TS-DOS that most people won’t come across as they are not trying to test a bunch of TPDD type drives in one setting. If you are just using it to load or save a file on occasion, I would guess you will never see it. Jeff Birt From: M100 <m100-boun...@lists.bitchin100.com> On Behalf Of Cedric Amand Sent: Monday, February 6, 2023 11:39 AM To: m...@bitchin100.com Subject: [M100] Low battery , crashes wipe the memory of both M102/M200 Hello, While trying to help Stephen testing new REX software, I've been investigating crashes of both my M102 and M200 (unrelated to REX) It seems that when using batteries that are "bit low" (but the red light does not turn on), together with anything using the serial port (transfers, TPDD,etc) again the light does not turn on, but I have system crashes that wipe the memory (basically equivalent to CTRL-BREAK-RESET) My systems comes back empty, date in 1900, you know the drill. Am I alone ? Is this indeed related to using serial, or maybe just to low battery ? Why doesn't the backup battery protect my work (they are brand new) ? What can I do to avoid those "memory wiping crashes" ? Could it be related to the fact both systems have a REX# ? (I doubt it - but hey, I also doubt these things wiped their memory twice a day back in the day) It's super frustrating because each time they occur I loose a bit of faith in my ModelT's, and you don't want that. If I could at least investigate a possible cause, that would help me.
