Thelen Posted September 4, 2002 Share Posted September 4, 2002 well i'm just starting programming in assembler on the atari 8 bit computers(xl/xe), I have read much in the atariartchives books, and made little programs with a display list and some screen data etc. but the problem is (maybe a little stupid) : i don't know what ram areas are free to use for me, to put character sets, p/m data, display data...could somebody give a little explain.... thanks, thelen Quote Link to comment Share on other sites More sharing options...
calamari Posted September 5, 2002 Share Posted September 5, 2002 Do a Google search for "Mapping the Atari".. this document goes through each memory address that is used. The 8-bit is a real mess with all the different OS stuff mixed in there. I can tell you the 5200 map, though: 5200 Memory and ROM layout Range Description $0000-$0018 Zero page $0019-$00FF Zero page (available) $0100-$01FF Stack $0200-$021B Interrupt vectors $021C-$3FFF RAM (available) $4000-$BFFC ROM (available) $BFFD-$BFFF Title info and start vector $C000-$C01F GTIA $D400-$D40F ANTIC $E800-$E80F POKEY $F800-$FBFF System character set $FC00-$FFFF System ROM calamari Quote Link to comment Share on other sites More sharing options...
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