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Digital Logic Sim

​A minimalistic digital logic simulator · By Sebastian Lague

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255
Topics

Recent updates

Version 2.1.6
26
18
Change Log: Added a Buzzer chip for creating sounds. This has a 4-bit volume input, and an 8-bit frequency input. The frequency range is from 27.5 to 3729.3 Hz...
3 files
Version 2.1.5
8
14
Change Log: Small improvements to simulation performance Minor reduction in simulation memory usage LED colour can now be changed from context menu (right-click...
3 files
Version 2.1.4
14
Change Log: Added keyboard shortcut to pause/unpause the simulation with Ctrl + Space Advancing a single step while paused is now down with the Space key Added...
3 files
Version 2.1.3
8
16
Change Log: Added an Undo/Redo system (ctrl+z, ctrl+shift+z) Note: this does not affect menu actions (such as creating collections, starring chips, etc). Added...
3 files
Version 2.1.2
5
16
Change Log: Added hex colour input field to chip customization menu Fixed chip 'save as' incorrectly overwriting uses of the original chip Fixed bug where you c...
3 files
Version 2.1.1
7
8
Change Log: Duplicating chips (with shift+D) now includes the connected wires Fixed thread conflict that could sometimes cause simulation to stop working when e...
3 files
Version 2.1.0
1
12
Note: I've set the version to 2.1.0 because this update contains bug fixes relating to the core simulation. It's therefore possible for the behaviour of some ch...
3 files
Version 2.0.4
6
12
Change Log: Improved wire editing controls (insert/delete wire points, and show grid while snapping) Fixed bug where collection name input field couldn't be bla...
3 files
255 topics · Next page · Previous page · First page
Topic
Last post
Hi everyone, I was thinking it might be fun to have a playlist on youtube to showcase different things that people have...
started by Sebastian Lague Apr 17, 2025 Last page
84 replies
5,566 views
A few frequently asked questions I've seen (will add more later). Last updated for version 2.1.6 Where are the AND and N...
started by Sebastian Lague May 12, 2025
25 replies
4,909 views
My own CPU named "N-16" is finished, due to DLS engine it might fail fibonacci sequence but sometimes it works if there...
started by mukhash_x86 69 days ago
11 replies
640 views
INST Bin Function NOP 0000 No operation LDA 0001 Load accumulator from memory ADD 0010 Add memory to accumulator SUB...
started by Bendy509 58 days ago
9 replies
464 views
so i was playing with and auto cliker but when i touch a wire in the simulation, it made a bunch of tiny wires that turn...
155 views
No replies yet
Sebastian hasn't updated Digital Logic Sim for a long time. So it's up to us, the community, to do mods. And I want you...
started by Murat_two 87 days ago
13 replies
682 views
I need to know how to make a register
started by Sterminator1211 49 days ago
2 replies
299 views
I Have 16-bit address ram storing 16-bits, it runs at 1800 operations per second, its made using rgb screens, i got the...
97 views
No replies yet
I do not have the best computer. When trying to build a 16-bit RAM, my PC started running hot at 12 bits with DFF-RAM bu...
started by nomasan 51 days ago
2 replies
270 views
Please excuse my sloppy wiring. I have highlighted in Violet here the offending signal, which flickers in only some inst...
started by gardrek Apr 19, 2025
11 replies
674 views
it works by feed its input into it self but when the and is active it switches to the data buffer.
2 replies
285 views
12 and 16 bit stuff. please.
started by sussybuku 88 days ago
4 replies
377 views
how i do make a simple CPU?
started by scratch_turbo 94 days ago
3 replies
355 views
I recently changed to version 2, because I realized that its better, but I have lots of libraries I need to re-create, i...
started by Ereinis1234 64 days ago
1 reply
249 views
I keep seeing the inputs for chips at the bottom/underneath the chip, but for the life of me I cannot figure out how to...
started by welss 65 days ago
3 replies
329 views
THIS IS THE STARTER PACK FOR DIGITAL LOGIC SIMULATOR. If you do not feel like following and copying Sebastian's every mo...
started by kshlok 81 days ago
3 replies
568 views
The other larger unofficial DLS server is a bit disorganised and also diverges quite a bit from a proper community serve...
started by doytschReal 75 days ago
1 reply
223 views
This approach actually disables the randomization of the output at start! Let me know what you think @Sebastian Lague!
started by kshlok 74 days ago
3 replies
250 views
i am getting 70 steps per second my whole project is slow i only have 256 bytes of memory with a couple of 1 bytes here...
started by goADX May 30, 2025
7 replies
381 views
for the 7 segment displays, will there be any way to make them negative like how you could in v1? so we could use two's...
started by JJ90848 Apr 15, 2025
11 replies
563 views
I just wanted to inform that it would be easy if you add a chip that can transfer multibit data through one wire and a c...
started by bonico312 80 days ago
72 views
No replies yet
the title is self explanatory
started by DODO 84 days ago
4 replies
212 views