On Fri, 5 Feb 2010 15:20:25 -0500, Robert A. Rosenberg wrote:

>It is currently used to indicate (via a FMTx value) when the format
>of the save area is something other than the standard 18F format
>(word1,backlink,forwardlink,R14,R15,R0-12).

The OP's question was about the first word in the save area (word 0),
despite "Word-1" in the subject line.

The values F4SA, etc. (not FMTx) go in the second word of the save area
(word 1).  That's the same word that contains the address of the previous
save area in the "standard" 72-byte save area.  They do not describe the
format of the save area in which it is contained.  They describe the way
that the program that allocated the save area saved the registers in the
caller's save area upon entry.

-- 
Tom Marchant

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