Path: utzoo!attcan!uunet!willett!ForthNet
From: ForthNet@willett.UUCP (ForthNet articles from GEnie)
Newsgroups: comp.lang.forth
Subject: Forth Engines / Harris
Message-ID: <1048.UUL1.3#5129@willett.UUCP>
Date: 1 Jun 90 03:45:23 GMT
Organization: Latest link in the ForthNet chain.  (Pgh, PA)
Lines: 31


 Date: 05-29-90 (19:14)              Number: 568 (Echo)
   To: ALL                           Refer#: NONE
 From: KENNETH O'HESKIN                Read: (N/A)
 Subj: HARRIS ADD MEMORY             Status: PUBLIC MESSAGE

         Anyone get their memory expansion installed using the
         manual example (the 16v8 GAL with KR Lyons' source code)?
         The "marching 1's and 0's" test progamme as supplied will
         crash my system. It has page 0 starting at 4AE0. Elsewhere
         in the Harris documents I believe it states the this
         configuration will start at 8000h.

         Well my system's RAM starts at 4000h; some of the memory
         is claimed by the compiler at bootup, so useable RAM starts
         at 4300h with the dictionary data space. I set H-TOP for 6000h
         and use the (page 0) 40k above it for buffers, which is plenty
         for now. There is an additional 16k mapped in page 1, which can
         be accessed with the @l c!l, etc. That accounts for the 64k.
         I used my own code to test it and its all there as it should
         be. Maybe there's a way of playing around with the code pages
         to remap the memory that I havn't come across yet. Anyway I'm
         happy enough with the present scheme.

 ---
  ~ EZ 1.26 ~ x

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