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 Autodocs Other: SAD --Overview-- ALLOCATE_MEMORY CALL_ADDRESS FREE_MEMORY GET_CONTEXT_FRAME NOP READ_ARRAY READ_BYTE READ_LONG READ_WORD RESET RETURN_TO_SYSTEM TURN_OFF_SINGLE TURN_ON_SINGLE WRITE_ARRAY WRITE_BYTE WRITE_LONG WRITE_WORD Include GuruMeditation | GET CONTEXT FRAME Command: $AF $09 Data: <none> This command will return a pointer to the saved context. This will be a pointer to all of the registers that were saved on the stack along with some other details. Returns frame address <$wwxxyyzz> The pointer returned is to the following structure: STRUCTURE SAD_FRAME,0 ; The first three are READ-ONLY... Mainly used to make it ; easier to understand what is going on in the system. ULONG SAD_VBR ; Current VBR (always 0 on 68000 CPUs) ULONG SAD_AttnFlags ; ULONG copy of the flags (UPPER WORD==0) ULONG SAD_ExecBase ; ExecBase ; These fields are the user registers... The registers are ; restored from these fields on exit from SAD... ; Note that USP is only valid if SR was *NOT* supervisor... ULONG SAD_USP ; User stack pointer ULONG SAD_D0 ; User register d0 ULONG SAD_D1 ; User register d1 ULONG SAD_D2 ; User register d2 ULONG SAD_D3 ; User register d3 ULONG SAD_D4 ; User register d4 ULONG SAD_D5 ; User register d5 ULONG SAD_D6 ; User register d6 ULONG SAD_D7 ; User register d7 ULONG SAD_A0 ; User register a0 ULONG SAD_A1 ; User register a1 ULONG SAD_A2 ; User register a2 ULONG SAD_A3 ; User register a3 ULONG SAD_A4 ; User register a4 ULONG SAD_A5 ; User register a5 ULONG SAD_A6 ; User register a6 ; This is for SAD internal use... It is the prompt that ; SAD is using... Changing this will have no effect on SAD. ULONG SAD_PROMPT ; SAD Prompt Longword... (internal use) ; From here on down is the standard exception frame ; The first two entries (SR and PC) are standard on all 680x0 CPUs UWORD SAD_SR ; Status register (part of exception frame) ULONG SAD_PC ; Return address (part of exception frame) Command ACK: $00 $09 Command DONE: $1F $09 $ww $xx $yy $zz Comments |
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