MatCat BrowserLogic

MatCat BrowserLogic https://www.logic.parts/ is a logic simulator written purely in HTML5 / Javascript using 2D Canvas.

Status

This simulator is in extremely early stages, it is not even Alpha at this point but early development. Outside contribution is welcome, please contact me in #LogicParts on Freenode IRC network.

License

To be decided, but at this moment this code is open source and free to use for non-commercial uses.

Changelog

0.4.4

• Fixed a delinking bug
• Fixed a bug where selection only worked in certain directions

0.4.3

• There is now multi-selection, including movement, deleting, disconnecting, etc.

0.4.2

• Added Hex keypad with 4 bit output, also has 3 function keys

0.4.1

• Fixed a signal propogation bug with IC's

0.4.0

• You can now pan the work area, hold ctrl key while mouse dragging an empty area.
• Right Click Menu
  • If an item is selected you can delete or disconnect them
• Top menu
  • New / Open / Save moved to File menu
  • You can now disable connection drawing, or put them above or below elements in View menu
  • There is now a pan to center feature in View menu
  • Create IC has been moved to Tools menu
  • Help menu -> About opens the Welcome Window
• Save dialog
• Fixed various small bugs

0.3.10

• Added BCD and Decimal options to the 4 bit output display, as well as bit labels in inputs

0.3.9

• Added grid alignment, hold CTRL key while moving to get pixel level positioning.
• Fixed property restoration issue with labels on loading a save

0.3.8

• Added labels! You can specify the text, size, and color

0.3.7

• Added 4 bit display! Currently shows hex format
• Fixed a bug with flip flop save states for connections

0.3.6

• Fixed a bug where flip flops weren't firing output changes when only !Q changed.

0.3.5

• Fixed a bug where newly linked objects weren't being polled to the proper output

0.3.4

• Added Flip-Flops! There are 4 to choose from, JK, SR, D, and T!

0.3.3

• Fixed a bug that crashed the engine when attempting to place an IC with no inputs

0.3.2

• Added IC Element, allows for converting a logic design to an IC for use in designs.
• Added IC Input and IC Output which allow for external connections when a design is used as an IC
• Added a New button for creating a new design

0.3.1

• Toolbox is now dynamically created and categorized
• The delete button is gone for now (use delete key on keyboard), it will come back when toolbar is added.

0.3.0

• Saving / Loading of designs
• New Element: Buffer, allows for construction of circuits that would otherwise be recursive
• Added pulse count to the delay block printout
• Fixed grid draw bug

0.2.12

• Fixed floating active link when deleting an element while linking
• Fixed the delay element so that it properly buffers all input pulses

0.2.11

• Added Delay element

0.2.10

• New elements will now do overlap detection on placement
• Newly placed elements will now be selected

0.2.9

• Active linking is now drawn with quadratic curves
• Links can now be deleted by simply trying to link the same link again
• Added pulse element
• Clock element now shows countdown in ms to next state change

0.2.8

• New elements now spawn in the center
• Added button element
• Changed switch graphical look

0.2.7

• Added welcome screen window

0.2.6

• Added background grid
• Logic elements now have proper logic shapes

0.2.5

• Fixed clock sync issue when disabled
• Added recursive detection on logic to prevent runaway oscillations
• Fixed click alignment on single input elements

0.2.4

• Brought connections to foreground to make them more obvious in less then ideal layouts
• Resized logic elements and positions I/O better
• Logic elements will now grow or shrink in size based on I/O
• Made selection box transparent

0.2.3

• Fixed bug where timer isn't removed when clock is deleted

0.2.2

• Fixed freaking out inputs on some input values
• Quadratic CURVES! Links now look MUCH nicer :)

0.2.1

• Fixed input property constraints on elements
• Added NOT gate

0.2.0

• Switched to a dark theme
• Added left hand toolbar
• Linking can now be done by clicking on an output then an input
• Added new element: Clock

0.1.0

Initial public release.