Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!usc!ucsd!ucbvax!TAUNOS.BITNET!L77
From: L77@TAUNOS.BITNET
Newsgroups: comp.sys.apple
Subject: Re: Ending a SYS file
Message-ID: <9002191431.aa13840@SMOKE.BRL.MIL>
Date: 18 Feb 90 22:49:40 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 21


> In article <22086@pasteur.Berkeley.EDU> fadden@cory.Berkeley.EDU.UUCP (Andy
>  McFadden) writes:
>>Executing another system file:
>>1) Read the file into memory at $2000
>>2) jmp $2000

>>The read routine isn't hard to code... just do a GET_EOF on the file
>>and then do a READ for that number of bytes.  Add a few OPENs and CLOSEs,
>>and you're all set.


 >Even easier:  Never mind the GET_EOF call; just request $FFFF bytes.
 >If the read is successful, and it read more than $0000 bytes, there
 >you have it!

..but then you better watch BEQing upon a successful call,i.e. error
code=$00,because the error code for EOF-encountered is NOT $00 (I forget what
it IS right now).

                       L77@TAUNOS