Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!UIAMVS.BITNET!AWCTTYPA
From: AWCTTYPA@UIAMVS.BITNET ("David A. Lyons")
Newsgroups: comp.sys.apple
Subject: INTBASIC; diff btw BRUN and BLOAD+CALL
Message-ID: <8902111720.aa11136@SMOKE.BRL.MIL>
Date: 12 Feb 89 01:06:07 GMT
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X-Unparsable-Date: Saturday 11 Feb 89 4:21 PM CT

>Date:         Fri, 10 Feb 89 07:52:34 GMT
>From:         Henk Uijterwaal <mcvax!np1!h75@UUNET.UU.NET>
>Subject:      Re: loading INTBASIC in DOS 3.3

>No, BLOADing a file and followed by a CALL to the first adress is exactly
>the same as BRUNning a file.

There are two differences (although I don't know whether they're
important in the case of LOADER.OBJ0).  First: during a BRUN, the
zero-page CSW and KSW hooks ($36-9) do not point to DOS; during a
CALL they do.  Second:  a BRUN with MON C,I,O mode turned on hangs
the system under most conditions.

>On my //e this command bloads INTbasic correctly:
>
> ] BLOAD INTBASIC, A$D000
>
>After you've done that, you can switch to INTbasic with the INT command
>and back to applesoft with FP

Yup, that will work _if_ the language card is write-enabled.  To make
sure it'll work, you'd have to twiddle $C08x location twice first.  I
don't remember which one off-hand.  The HELLO program on the _older_
DOS 3.3 System Masters (before they came up with the faster
LOADER.OBJ0) demonstrates it.

>Henk Uijterwaal

--David A. Lyons              bitnet: awcttypa@uiamvs
  DAL Systems                 CompuServe:  72177,3233
  P.O. Box 287                GEnie mail:    D.LYONS2
  North Liberty, IA 52317     AppleLinkPE: Dave Lyons