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- Forthmacs Memory Map
-
- Addresses shown are approximate and were found on a 512K 520ST
- with TOS in ROM, and no desk accessories loaded. All addresses are
- in hex.
-
-
- Top of Memory
-
-
- Used by TOS
-
- ( 78000 ) ( for a 512K system )
-
-
- Memory available for Emacs and other TOS programs executed by EXEC
-
- memtop @ ( 60000 ) ( does not depend on the memory size )
-
- Forth stacks and terminal input buffer
-
- sp0 @ ps-size - ( 5fce0 )
-
- Memory allocated by alloc-mem; used for file buffers, etc
-
- next-free-mem @ ( 5c350 )
-
- Memory available for allocation with alloc-mem (grows down)
-
-
- Memory available for expanding the dictionary (grows up)
-
- here ( 21ab4 )
-
- Forth dictionary
-
- origin ( 0ecce )
-
- Base page
-
- base-page ( 0ebce ) ( this address depends on a lot of things )
-
- Used by TOS
-
- Bottom of Memory
-