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From: matt@iquery.UUCP (Matt Reedy)
Newsgroups: comp.sys.ibm.pc,comp.lang.misc
Subject: IBM Basic 2.0 ISAM interface
Message-ID: <106@iquery.UUCP>
Date: 2 Feb 88 16:45:06 GMT
Organization: Programmed Intelligence, San Antonio
Lines: 25
Keywords: BASIC ISAM assembly interface

Has anyone successfully used the assembly language interface to IBM's 
compiled BASIC 2.0 ISAM, as documented in their _BASIC_Compiler_Fundamentals_ 
manual?  

We are writing a C program to call ISAM, and have been unable to get ISAM 
to do anything.  Per the manual, we are calling ISAM in the following sequence:

	Int 21, function 92h, AL = 15 (ICONTROL) function 4 (initialize ISAM)
	Int 21, function 92h, AL = 0 (IOPEN) open file for read only
		(this function returns 0 in AX - supposedly the "handle" used by
		ISAM)
	Int 21, function 92h, AL = 2 (ISEEK) mode 0 (first key in set), using
		the handle returned by function 0 above.
		(at this point ISAM goes off into never-never land and a cold
		reboot is required).

Is there something we are missing in initialization or somewhere else?
Any help will be greatly appreciated.

matt

Matthew Reedy				{adelie,petro}!iquery!matt
Programmed Intelligence Corp.		(512) 822 8703
830 NE Loop 410, Suite 412		"just ONE MORE compile...."
San Antonio, TX  78209-1209