Also, you need to provide the zipped ROM file. Note that the ROM file cpc6128.zip as on the demo page below also needs to contain the AMSDOS ROM from cpc464.zip because unlike regular MESS, JSMESS only loads a single ROM ZIP file per machine.
This [http://mdoege.github.io/jsmess/ JSMESS CPC demo page] (with the SubHunter disc in drive A) also has a ZIP file download of the build with the JS, ZIPs, and HTML. Resolution is set to MODE 1 (384x272), but you can either set a higher resolution in messloader.js or use the zoom functionality of the browser to get a larger picture.
==Links==