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From: mjg@ecsvax.UUCP
Newsgroups: net.micro.trs-80
Subject: Re: 'calling' from disk to memory
Message-ID: <2116@ecsvax.UUCP>
Date: Tue, 6-Mar-84 09:36:16 EST
Article-I.D.: ecsvax.2116
Posted: Tue Mar  6 09:36:16 1984
Date-Received: Wed, 7-Mar-84 08:06:11 EST
References: dartvax.791
Lines: 18


That's a funny way to put it - there is no such thing as 'calling a board'
on the TRS80 that I know of. Do you mean read a sector or group of sectors
from disk direct to screen memory. If so this casn be done fairly easily
directly in machine code and called from basic or other languages as a USR
or equivalent function. I can recommend the series of books on the TRS80
published by IJG with titles like Microsoft Basic decoded and other Mysteries.
The one that would be most helpful to you is called something like TRS80
Disk Machine Language and Other Mysteries. It contains complete info for
the Model I and III on reading and writing disks using machine code.
Alternatively all you need is a DOS call to read a specific file. If you
read your TRS80 DOS manual you will find it's all documented.


!~r regards

Mike Gingell,
              ....decvax!mcnc!ecsvax!mjg