Regardless of the described, what are finally the differences between 1541 real/emulated and SD2IEC drives and how could software developers take account of these?
BR
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Regardless of the described, what are finally the differences between 1541 real/emulated and SD2IEC drives and how could software developers take account of these?
sd2iec is not a floppy drive emulator - it does not emulate the CPU that is in a 1541 drive, so whatever program tries to upload code to the drive will not work. typically that includes all sorts of fastloaders, but also some demos that use the drive as a coprocessor. it does also not emulate the floppy memory so stuff accessing the buffers in a 1541 specific way may also not work correctly.what are finally the differences between 1541 real/emulated and SD2IEC drives and how could software developers take account of these?
no. it uses no "rom" in that sense at all. it supports a few fastloader protocols natively, one of which is jiffydos.SD2IEC drives use a rom derived from JiffyDOS
For the Vic-20 SJLOAD (software) or JiffyDos Chip (Hardware)