[Coco] TCP/IP Programming in Commodore BASIC

[Little John]

$FF8x was used by Paul Barton's memory uprades, but since these aren't 
available anyway, that point is probably moot.

Earlier Speech Systems (The Voice, SuperVoice, etc.) used the $FF8x range. 
After the advent of the CoCo 3 Speech Systems provided modifications to move 
these to the $FF7x range.

The primary issue is that once a Multi-Pak has been upgraded to CoCo 3 
compatibility, the $FF8x range is locked out so any $FF8x device will not 
function in an upgraded MPI. It's easy to overcome this with the 26-3024 by 
modding the PAL chip to respond to the $FF8x range as I have in my own 
MPI's. The 26-3124 isn't quite so simple to modify to respond to the $FF8x 
range since it has no PAL, but it can be done.

JohnT
----- Original Message ----- 
From: <jdaggett at gate.net>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Tuesday, November 09, 2010 11:46 AM
Subject: Re: [Coco] TCP/IP Programming in Commodore BASIC



> On 6 Nov 2010 at 11:27, Gene Heskett wrote:

>

>> I am still in favor of the 'chip with a stack' solution, if some way to

>> squeeze its register addressing into the coco's normal I/O map could be

>> done.  However, I have not investigated today's offerings in that area.

>

> 16 Addresses can be fit into the range of $FF80 to $FF8F. As far as I know 

> the GIME chip

> does not use this block and non of the multitude of the peripherals do 

> either.

>

> james

>

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