Sharing I/O and External Bus using Processor Expert

[ETCTim]

Hello,

I am using the 56F8346 DSP. I want to use A0 thru A10 as the address bus, and then use the remaining A pins as GPIO.

Can I set this up in PE? When I turn on the address bus, PE conflicts with the BitIO beans that I setup for the remaining pins. Can I tell PE that I only want to use certain address and data lines for the external bus?

Thanks,

Tim

[ProcessorExpert]

The current version of Processor Expert allows only to enable/disable the whole external bus. However, this feautre has already been implemented into the next upcoming version of Processor Expert.

best regards

Petr Hradsky

Processor Expert Support Team

UNIS

[imajeff]

If it's like the MC9S12, you could only configure the port as GPIO (then bitbang it), or configure the whole port to be an address bus (expanded i/o).