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what about compatibility with old speccy soft (1982 basic was modified, so changed enter points...) and what with free #ff space? i tell about ld i,#3f ; im 2
Compatibility is perfect. Only 128 editor is replaced with new ISO ROM features. So software using direct access to 128 rom (rom 0) will work incorrect. #FF space is replaced with new code, but second 2 bytes of IM2 tables from adress #3xFF contain #FFFF value = compatible.