If you use a programmer like the Promenade C1, you must add a two-byte header (usually 00 20 ) using a hex editor like WinHex so the hardware knows where to load the data.
on these chips during a JiffyDOS installation "surgery" to ensure a long life for the vintage hardware. Hardware Compatibility : JiffyDOS installation varies by board type. For older "longboards" jiffydosc64bin hot
Because JiffyDOS is still technically under copyright (though many consider it "abandonware," clones and open-source replacements like JiffyDOS for SD2IEC exist), genuine binaries are often provided with hardware accelerators like the Ultimate 1541 , Turbo Chameleon , or sold via retro stores. Always respect IP law — use a dump from your own original ROM if possible. If you use a programmer like the Promenade
This article is for informational and historical purposes. Downloading copyrighted ROMs may violate laws in your jurisdiction. Always support official hardware developers when possible. For older "longboards" Because JiffyDOS is still technically