IO8EMMOK

A driver to allow loading of EMM386.EXE in MS-DOS 8.00 real mode

THIS DRIVER IS DESIGNED ONLY FOR MS-DOS 8.00, NOT OTHERS.

Version 1.3

It will allow your to do this. Do NOT waste your time trying to use QEMM386 / 386MAX to get similar things done. They do not work in MS-DOS 8.0.

Condition

Put IO8EMMOK.SYS in your DOS directory

Enable the real-mode DOS. Use any patch for that purpose.

Add the following line as the FIRST line in your config.sys

DEVICE=C:\DOS\IO8EMMOK.SYS

You may load your EMM386.EXE after the above line, with any parameter.

DEVICE=C:\DOS\EMM386.EXE [ANY PARAMETERS]

Without the IO8EMMOK, MS-DOS 8.00 will hang when loading EMM386.EXE. Now, reboot your system. The system will not hang again. Enjoy.

Use MASM 6.15 to compile the source code.

READ the source code comments to get more information, regarding how and why this program works, how this program is designed and implemented, and copyright information.
Branch 1.3 can load Windows 3.xx in enhanced mode, with W3XStart patch, without restrictions on serial mouse. PS/2 mouse is working now.
The W3XStart.COM is a hotfix patch. It modifies memory, not the file. No need to decompress IO.SYS. Call this patch properly in your AUTOEXEC.BAT.
Please cite or reference these programs with the author's title and name: Dr. Pu-Feng Du.

For Windows For Workgroup 3.11. Use hex editor to do the following replace

Find

 66 c7 46 49 ff ff

Replace

 6a ff 8f 46 49 90

There will be two replacements, together.

Try to use the EMM386.EXE that comes with WFWG or PC-DOS 2000. They are really good.
DO NOT load high IO8EMMOK.SYS or W3XSTART.COM