Search found 112 matches

by Dave Britten
Fri Nov 20, 2020 3:05 am
Forum: Update Announcements
Topic: DM41X V2.1
Replies: 39
Views: 1519

Re: DM41X V2.1

rprosperi wrote:
Fri Nov 20, 2020 2:57 am
Exactly emulating behavior which isn't particularly useful...
I'd wager you could find plenty of disagreement on this point, particularly from fast typers.
by Dave Britten
Thu Nov 19, 2020 9:51 pm
Forum: Update Announcements
Topic: DM41X V2.1
Replies: 39
Views: 1519

Re: DM41X V2.1

The update installed just fine. However, two-key rollover appears to still be not working correctly (same behavior as the previous version). e.g. hold 1, press 2, release 1, release 2, and you get 122 on the stack.
by Dave Britten
Tue Nov 10, 2020 2:16 pm
Forum: DM41X
Topic: Delivery to California USA
Replies: 21
Views: 1160

Re: Delivery to California USA

There currently is no priority shipping option with tracking, though very, very few shipments have ever been lost. Shipping from Europe to International addresses with tracking is dramatically more expensive than the current rate, and is often not much faster, sometimes not even as fast, due to ind...
by Dave Britten
Fri Oct 30, 2020 2:43 pm
Forum: DM42
Topic: Memory usage changes?
Replies: 12
Views: 353

Re: Memory usage changes?

unless the state files are heavily compressed. They are not. The size of a state file is roughly the same as the amount of memory it takes up when loaded. Programs about double in size when loaded, while the overhead for other data types is much smaller. Okay, then the disparity isn't QUITE as stri...
by Dave Britten
Fri Oct 30, 2020 1:22 pm
Forum: DM42
Topic: Memory usage changes?
Replies: 12
Views: 353

Re: Memory usage changes?

A little more experimenting: I flashed my older unit back to the 3.15/3.14 firmware (July 2019), loaded the state file, and had about 35K RAM free. Then I created and stored a 640x3 matrix, leaving around 3K free. Then I did GTO .. and the calculator crashed, flashing something on the screen far too...
by Dave Britten
Thu Oct 29, 2020 11:37 pm
Forum: DM42
Topic: Memory usage changes?
Replies: 12
Views: 353

Re: Memory usage changes?

With 12,296 bytes free, creating a 640x1 matrix on the stack takes it down to 1,352 bytes free. Attempting to create a 480x2 (after deleting the 640x1 matrix) reports "Insufficient Memory". The plot thickens...
by Dave Britten
Thu Oct 29, 2020 11:11 pm
Forum: DM42
Topic: Memory usage changes?
Replies: 12
Views: 353

Re: Memory usage changes?

That sounds like a DM42 issue. The new state file being a bit smaller makes sense, since the new state file format introduced in 2.5 is a bit more efficient than the original one. But free memory dropping by that much is not OK. The Free42 core deletes its variables when it unloads a state so there...
by Dave Britten
Thu Oct 29, 2020 8:34 pm
Forum: DM42
Topic: Memory usage changes?
Replies: 12
Views: 353

Re: Memory usage changes?

Alright, there's definitely something squirrelly going on. I have a state file from an older release named "temp.s42", which is 38K in size. Right after I load it, MEM reports 34,592 bytes free. I then immediately save this as a new state file, say "temp3.f42", which ends up bein...
by Dave Britten
Thu Oct 29, 2020 7:47 pm
Forum: DM42
Topic: Memory usage changes?
Replies: 12
Views: 353

Re: Memory usage changes?

In Free42, the only things that use a lot of memory are large matrices and memory fragmentation (and memory fragmentation only eats into available memory if you're working with large matrices). Try deleting all variables, clearing the stack and LASTx, and then saving the state and rebooting. If ava...
by Dave Britten
Thu Oct 29, 2020 6:46 pm
Forum: DM42
Topic: Memory usage changes?
Replies: 12
Views: 353

Memory usage changes?

Has Free42 and/or the DM42 changed its memory usage behavior within the past year or so? My usual loadout of programs and data used to report somewhere around 24,000-30,000 bytes free, whereas now it seems to be around 8,000. The weird thing is I have an old .s42 state file that's 38K, and the DM42 ...