1/14/2024 0 Comments 27c256 eprom programmer![]() ![]() Thus, there is no need for drilling any holes for a switch in our precious machines any more! I have previously covered the topic of installing a commercial version of the JiffyDOS IC. However, this time I wanted to do all the work myself! As I have no use for a second character set, I just wanted to exchange the 2nd Kernal with JiffyDOS using my own 27C256 EPROM, an EPROM burner and a licensed binary copy of JiffyDOS from Retro Innovations. If the RESTORE key is pressed during reset, the 2nd character set is chosen and will remain active until the next reset. By pressing and holding the RESTORE key for a few seconds, release it and then activate the RESET switch, the 2nd Kernal will be loaded into memory. ![]() At start-up, the 1st Kernal and 1st Character sets are chosen as default. Standard CBM Kernal & JiffyDOS Kernal) on the same machine. English & Danish) and two different Kernals ( i.e. Each of the ROMs can quite easily be replaced in order to have two unique character sets ( i.e. The C64 Reloaded ROMs IC holds 2 Kernals and 2 Character sets located at specific memory locations on the EPROM. ![]()
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