[Coco] CoCo 'Extended ADOS 3'--How do I get this working?

[Steven Wallis]

Does anyone know how to get the Color Computer 3 "Extended ADOS 3" working?
Here are the steps I have done, but it isn't working properly yet.

I'm using MESSUI64 1.87 from www.progettosnaps.net/messui/


1. From the "ADOS 3" disk RUN"CUSTOMIZ.BAS", save your ADOS file as
MYFILE.BIN

2. Copy MYFILE.BIN file to the "Extended ADOS 3" disk.

3. Run "ECUST.BAS", use default settings and save it (it will use
EPROM.BIN).

4. Copy EPROM.BIN from the .DSK image to a hard drive folder.

5. Edit EPRON.BIN, remove the first 5 bytes and the last 5 bytes, save it.
So it is now 16,384 Bytes.

6. Copy EPROM.BIN into \MESS\Roms

7. I used HashMyFiles.zip to find the EPROM.BIN hashes.
    www.nirsoft.net/utils/hash_my_files.html

8. Edit \MESS\Hash\coco_cart.xml and add these lines near the end:
     <software name="extendedados3">
          <description>ADOS 3 Extended 1</description>
          <year>1989</year>
          <publisher>SpectroSystems</publisher>
          <info name="developer" value="SpectroSystems" />
          <info name="author" value="Arthur J. Flexser" />
          <info name="serial" value="26-9991" />
          <part name="cart" interface="coco_cart">
               <dataarea name="rom" size="16384">
                    <rom name="EPROM.BIN" size="16384" crc="7f0edf28"
sha1="6ca61e29c136ec8201492ca7f9eb050912f3582d" offset="0" />
               </dataarea>
          </part>
     </software>

9. Run MESSUI64, load EPROM.BIN into the Cartridge slot.

10. Start Color Computer 3 emulation.


It starts up but it is screwy. Instead of the startup message, I get 8
graphics characters; then the cursor shows up.
Only some of the Ctrl keys seem to work. Key repeat works. The new DOS
commands work.

Thank you in advance!