[Coco] Trying to understand Cart Usage on Coco3

[Darren A]

On Sun, Aug 23, 2015 at 4:03 PM, RETRO Innovations wrote:

> OK, one more question:
>
> I have a 16kB EPROM on the cart port of my EPROM cart, attached to
> A13-A0.  If I turn off the ROM with ffde,0 and then read c000, does that
> read 0000 of the eprom or 1000?  I seem to recall something about the A13
> line being inverted on ROM reads on the Coco3.
>
> JIm
>


There is no inversion of address lines on the CoCo cartridge port.
Assuming your EPROM is connected to the address bus in the normal fashion,
$C000 should read $0000 from the chip.

- Darren