[Coco] CoCo Model 1 Cartridge Port

[Charles Hudson]

On to the cartridge port, which seems workable.

Verified that the Deluxe RS-232 Program Pak (Cat. 26-2226) can be 
invoked with "Exec &HC000"; I/O TBD.  Got modems and cables, need to 
find / create a driver.

Also verified same for Disk Controller (Cat. 26-3022) which boots up 
with the message "Disk Extended Color Basic 1.0".  I have the disk 
cable, a drive and blank disks but no software.  End-to-end 
communication yet unproven.

I think there are later ROM versions used with (some version of) the 
disk controller; can they be used in this cart?

-CH-