A89: Phoenix/SMQ/ROM 1.05

A89: Phoenix/SMQ/ROM 1.05

• To: <assembly-89@lists.ticalc.org>
• Subject: A89: Phoenix/SMQ/ROM 1.05
• From: "Scott Noveck" <noveck@pluto.njcc.com>
• Date: Fri, 1 Oct 1999 16:28:40 -0400
• Reply-To: assembly-89@lists.ticalc.org

To address the recent posts about phoenix and SMQ on the new 89s -- try
downgrading to ROM 1.00 and you should be fine.  This is NOT hardware
related!  The problem is that the Graphlib greyscale routine stores itself
in interrupt 1 -- but with interrupt 1 disabled the TIOS key reading
routines (like those used in TI-BASIC and userlib::idle_loop) will not work.
Graphlib solves this problem by automatically calling the TIOS routines
right after switching the screen.  This is fine in ROM 1.00; however, ROM
1.05 features a slower tios key-reading routine.  This slows down the
greyscale too much, causing the greyscale appearance to fail and the games
to run slower.

I recommend that you go back to ROM 1.00 unless you need 1.05's faster
integration.  The benefits of 1.05 are too much of a hassle with ASM
programs; wait for ROM 2.00 instead.  FYI, you could also run SMQ in black
and white mode.

    -Scott

• RE: A89: Phoenix/SMQ/ROM 1.05
• From: "Indifference" <agrawal1327@earthlink.net>

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