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More changes to the README.
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jbrandwood committed Jun 12, 2022
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TEOS
====

**A replacement Operating System for KRIKzz's Turbo Everdrive v2**
**A replacement Operating System for Krikzz's Turbo Everdrive v2**

Copyright John Brandwood 2019-2022.

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About
-----

This is a replacement Operating System for KRIKzz's Turbo Everdrive v2.
This is a replacement Operating System for Krikzz's Turbo Everdrive v2.

Please do NOT try to use this on an old Turbo Everdrive v1, IT WILL NOT WORK!


While TEOS is graphically nicer than the original Turbo Everdrive OS, the real reasons for using it are ...

* It allows the TurboGrafx (and PC Engine) to use the Turbo Everdrive v2 as a Super System Card, avoiding the need to buy the very-expensive US TurboGrafx Super System Card.
* It avoids the potentially damaging memory bus-fighting that occurs with Krikzz's OS when running the PC Engine (or TurboGrafx) Super System Card HuCARD on the Turbo Everdrive.
* It supports copying the PC Engine's "Backup RAM" contents to and from the Turbo Everdrive's SD card.
* It supports copying the PC Engine's "Memory Base 128" contents to and from the Turbo Everdrive's SD card.
* It fixes the graphics corruption in the Japanese "POPULOUS" HuCARD game.
* It supports the use of the Japanese "Tennokoe Bank" HuCARD utility.


*****************************************************************************

TEOS Release v3.01 (2022/06/12)
-------------------------------

Just extract the contents of the .ZIP file, and copy the extracted files to the root of your Turbo EverDrive's SD card.
Just extract the contents of the release "TEOS-3.01-2022-06-12.ZIP" file, and then copy the extracted files to the root of your Turbo EverDrive's SD card.

In particular ... the contents of the /TBED/ directory *must* go in that directory.

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* Fix missing color in "Order of the Gryffon" password screen.


*****************************************************************************

Changes for TEOS Beta 5 (2021/01/26)
------------------------------------

TEOS Beta 5 fixes initialization problems with the following games ...

* Tower of Druaga
* Space Harrier
* Shiryou Sensen
* Out Live
* Benkei Gaiden
* Gekisha Boy
* Night Creatures


*****************************************************************************

Building a new TEOS from Source Code
------------------------------------

The source code for TEOS can be found on GITHUB at https://github.com/jbrandwood/teos

You will need to use a recent version of the PCEAS assembler to successfully built TEOS.
You will need to use a recent version of the PCEAS assembler to successfully build TEOS.


The PCEAS assembler is one component of the HuC project which can be found on GITHUB at https://github.com/jbrandwood/huc
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