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"save area" is used to save modified system variables and ports. It's
shared between the second and main chunk.
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libsrc/atari/save_area.inc
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libsrc/atari/save_area.inc
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.import SAVMSC_save
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.import MEMTOP_save
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.import APPMHI_save
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.import RAMTOP_save
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.import PORTB_save
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libsrc/atari/save_area.s
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libsrc/atari/save_area.s
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;
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; Atari XL, shared data between 2nd load chunk and main chunk
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;
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; Contains old values of modified system variables and ports.
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;
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; Christian Groessler, chris@groessler.org, 2013
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;
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.if .defined(__ATARIXL__)
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.export SAVMSC_save
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.export MEMTOP_save
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.export APPMHI_save
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.export RAMTOP_save
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.export PORTB_save
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.segment "SAVEAREA"
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SAVMSC_save: .res 2
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MEMTOP_save: .res 2
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APPMHI_save: .res 2
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RAMTOP_save: .res 1
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PORTB_save: .res 1
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.endif
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