A83: Re: ROM calls

To: <assembly-83@lists.ticalc.org>
Subject: A83: Re: ROM calls
From: "James Matthews" <matthews@tkb.att.ne.jp>
Date: Thu, 30 Jul 1998 01:49:39 +0900
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-83@lists.ticalc.org


> How does the 83 know whether a call you make should call to the ROM or
> call something from the RAM, as in a library routine or a subroutine in a
> program?

Rom calls are merely memory equates to places in the ROM...for labels I'm
not too sure, but I know that the JR command tells the processor how many
bytes to move to.  JP specifies an address in the program to jump
to...about the call command...I'm not too sure, but its probably similar to
JP...not sure though. :)

James.

PS:  Thanks for the highscore thing!

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