Pop-up menus and files

Pop-up menu

The pop-up menu for memory includes four options in addition to the options common to all components:

Edit Contents:

Bring up a hex editor for editing the contents of memory.

Clear Contents:

Resets all values in RAM to 0 or randomly depending on the parameters in Project options .

Load Image...:

Resets all values in memory to the values found in a file. The file format is recognized automatically and if it is not the case a window Memory file panel opens for an appropriate selection.

Save Image...:

Stores all values in memory in a file using one of the formats described below.

File format

• v2.0 raw Historical version of logisim allows "run.length" coding.
• v3.0 hex words plain Close to v2.0 word structured.
• v3.0 hex words addressed As before with the possibility to define a start address for each line of the file.
• v3.0 hex bytes plain big-endian
  v3.0 hex bytes plain little-endian Organized in byte streams.
• v3.0 hex bytes addressed big-endian
  v3.0 hex bytes addressed little-endian Organized in byte flow as before with the possibility to define an address.
• Binary data big-endian
  Binary data little-endian Image of the memory uncoded in hexadecimal.
• Ascii byte escape big-endian
  Ascii byte escape little-endian ASCII encoded file with escape code, as in C for non-printable characters.

Next: Memory file panel.