[Coco] Re: [Color Computer] Re: Adapter from Coo3 to SVGA

[Torsten Dittel]

> When you write to $FF22 you will write to the GIME chip i nternal register at $FF22. 
> Internal to the GIME this register is a write only register. So that the old Coco1/2 bits 
> for mode control of the 6847 will be maintained. A read of that address address will 
> actually read from the PIA chip. 
> 
> Thus PB3 to PB7 of the PIA chip can actually be used as general purpose inputs 
> only. I was in error when I said that they could be used as general purpose I/O (input 
> and/or output).

Does that mean we can't write to the "Monitor Detection Pin" at all?