Topic       : The ATARI Compendium
Author      : Scott Sanders / JAY Software
Version     : 1.25 (20/6/2003)
Subject     : Documentation
Nodes       : 1117
Index Size  : 32614
HCP-Version : 6
Compiled on : Atari
@charset    : UTF-8
@lang       : en
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@help       : %About
@options    : +g -i -t4 +y +z
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                          Processor State Save Area


Location(s)   SizeBYTE   Occupies one byte (8 bits).
WORD   Occupies one WORD (16 bits).
LONG   Occupies one longword (32 bits).
OW     Occupies the odd WORD of a LONG.
EW     Occupies the even WORD of a LONG.
OB     Occupies the odd BYTE of a WORD.
EB     Occupies the even BYTE of the WORD.
  MchnIf the box is shaded then address is available
for this computer.

        ▒ ▒ ▒ ▒ ▒ ▒
        | | | | | '------- Falcon030
        | | | | '--------- TT030
        | | | '----------- MEGA STe
        | | '------------- STe
        | '--------------- MEGA ST
        '----------------- ST
  TypeROM          Location is Read-Only Memory
RAM          Location is Read-Write Memory
I/O          Location is hardware-mapped
VME          Location addresses VME address space
N/A          Not applicable
RO           Read-only location
WO           Write-only location
RW           Read-write location
RSVD         Reserved
Unassigned   Either not assigned or undocumented
  Meaning                         (see Usage)

                   ▒▒▒▒▒▒
0x00000380    LONG ▒▒▒▒▒▒ RAM   proc_lives: If, after a system failure,
                   ▒▒▒▒▒▒       the operating system is able to save the
                   ▒▒▒▒▒▒       processor state in the following
                   ▒▒▒▒▒▒       variables, this value will be 0x12345678
                   ▒▒▒▒▒▒
                   ▒▒▒▒▒▒
0x00000384    LONG ▒▒▒▒▒▒ RAM   proc_dregs: The contents of registers D0
                   ▒▒▒▒▒▒       through D7 are stored here
                   ▒▒▒▒▒▒
                   ▒▒▒▒▒▒
0x000003A4    LONG ▒▒▒▒▒▒ RAM   proc_aregs: The contents of registers A0
                   ▒▒▒▒▒▒       through A7
                   ▒▒▒▒▒▒
                   ▒▒▒▒▒▒
0x000003C4    LONG ▒▒▒▒▒▒ RAM   proc_pc: The first byte of this longword
                   ▒▒▒▒▒▒       indicates  the exception number that
                   ▒▒▒▒▒▒       occurred
                   ▒▒▒▒▒▒
                   ▒▒▒▒▒▒
0x000003C8    LONG ▒▒▒▒▒▒ RAM   proc_usp: The user stack pointer (USP) is
                   ▒▒▒▒▒▒       saved here
                   ▒▒▒▒▒▒
                   ▒▒▒▒▒▒
0x000003CC -  WORD ▒▒▒▒▒▒ RAM   proc_stk: The top 16 WORDs of the
0x000003EA         ▒▒▒▒▒▒       supervisor stack are saved here
                   ▒▒▒▒▒▒
                   ▒▒▒▒▒▒
0x000003EC -  N/A  ▒▒▒▒▒▒ RAM   Unassigned
0x000003FF         ▒▒▒▒▒▒
                   ▒▒▒▒▒▒