.SNA, .Z80, .ROM and .SCR files may be loaded by drag&drop, double clicking or from the File menu using "Load..."
Snapshots only contain information about the ZX Spectrum side, not about any settings of the emulator. So window size, location or keyboard setting aren't affected. If the snap doesn't launch, the Z80 CPU may be halted, try 'Resume' or 'Restart' from the File menu.
After loading a ROM image, the ZX Spectrum is reset to start up with the new ROM. To switch back to the built-in ROM, select "New" from the File menu. Subsequent loading of .SNA and .Z80 snapshots will not reload the built-in original ZX Spectrum ROM. So you can load snapshots of ROM based games like "Shadow of the Unicorn" after loading the game's ROM. Selecting "Reset" from the "Debugging" menu will reset the ZX Spectrum with the external ROM still loaded, Selecting "New" from the "File" menu will load the original ROM and reset.
Loading a screenshot virtually doesn't more than loading it into the display memory area of the ZX Spectrum. Make sure no programm is running which overwrites the screen. Launching Mac Spectacle by double clicking a .scr file isn't of much use too, for the resetting ZX Spectrum will clear the screen after 2 seconds.
Saving snapshots, screenshots and ROMs:
Snapshots, screenshots and ROM images may be saved at any time using "Save..." from the file menu. There is only one save file menu item, which decides what to save depending on the file name you enter in the save file dialog. The file name should end on .sna, .z80, .rom, .scr or .pic to tell what you want to save and in which format. If the file name ends on something else, Mac Spectacle defaults to .z80, except a file with a valid file type is overwritten, in this case Mac Spectacle uses this file type.
To save a snapshot, prefer .z80 over .sna, because the .sna format suffers from a principle problem which may result in saving not-working snapshots.
To save a screenshot, use .scr if you want to exchange files with other ZX Spectrum emulator users on non-Macintosh computers or if you want to reload them with Mac Spectacle. Use .pict if you want to load them with standard graphic programs etc, for this is the only format they will understand. (Mac Spectacle cannot load .pict files at the moment of writing)
Loading tapes:
.tape files represent the original program tapes. They may be opened by drag&drop or by double click or from the file menu. A small window opens, showing some tape recorder controls. The window is not topped, to leave the ZX Spectrum window in front. You normally don't need to access it. If you type LOAD "" (you know, you have to type j"" if you have selected basic keyboard mapping or even <j> <option+p> <option+p> if you have selected the game keyboard) the emulator reads from this file. If you type LOAD"" without a tape open, you will be prompted. If you open the tape recorder window from the windows menu, you will be prompted too.
