LF: Ti-92 OS stuff

To: list-fargo@lists.ticalc.org
Subject: LF: Ti-92 OS stuff
From: Hmlacage@aol.com
Date: Fri, 18 Jul 1997 08:23:39 -0400 (EDT)
Reply-To: list-fargo@lists.ticalc.org

well: this follows last message: fargo libs and docs.
i have been through ALL fargo doc: there were a few things i had missed (
sorry patrick about the keyboard buffer ) ... 
ok: this is my pb...
1) when fargo is launched, fargo is not using the ti os: it uses some rom
routines but it directly access to the microprocessor. Is this wrong ? 

2) thus, when we are running fargo, if we set the bit 2 of $600001 ( see
traps.txt: auto int 7 ) , then we have freely access to the interrupt vector
table... 
We could, for example, redirect traps... 
OR modify the initialisation vector to point at one of our program ( which
would, when running,  before anything restore the ini vectore to its initial
value: ti os so that, when quitting, the calc runs normally ) and switch off
the calc.... 
Then, when we would switch it on again, we would be into our own program... 
Thus, we could completly overcome the ti os... 
Yeah: what use ? well... that was just a thought... am i wrong ? 

3) There exist a video buffer ( $05c10 ). has it anything to do with $600010
? ( video mem adress ) 

thanks, for answering... 
mathieu, <hm lacage@aol.com>

Follow-Ups:

Re: LF: Ti-92 OS stuff

From: Bryan Turner <bcturner@eos.ncsu.edu>