The assembler allows writing new code, editing existing code and running arbitrary code. At the moment, the assembler can be used for the SNES’s main CPU, the SA-1 and the Game Boy’s CPU.
Code is assembled on-the-fly, with the resulting byte code being shown on the right.
Any compilation error will be shown in the list at the bottom – double-click an error in the list to navigate to the line that caused it.
Once you are done editing the code, click
Apply to write the code to the specified memory address - this can be used to create new code in RAM, for example, or alter existing code in the ROM.
Any changes done to the ROM will remain in effect until the ROM is reloaded. If you want to save your modifications to a .sfc file, or as an IPS patch, you can use the File→Save ROM as or File→Save edits as IPS commands in the debugger window.
Note: When editing an existing block of code, the assembler keeps track of how many bytes of code the original code contained. If the new code is too large to fit into the original block of code, a warning will be shown before applying the changes.
.dbdirective can be used to add arbitrary data to the output.
Syntax highlighting can be configured (or disabled) via the
It is also possible to change the font size.