combining two ports for a DAC on pins 5-12

Using Arduino Programming Questions
1

I have been making some changes to the code found on this page:

http://blog.wingedvictorydesign.com/2009/05/29/generate-real-time-audio-on-the-arduino-using-pulse-code-modulation/

so that I can use a DAC instead of PWM.

However, instead of just doing this to the code so that the audio comes out on PORTD

PORTD=sineovertones[waveindex] + 128;
waveindex++;

OCR1A = analog0;..........

I would like to find a way to call both PORTD and PORTB so I can connect the DAC to pins 5-12.

anyone have any idea how to do this without using analogWrite?

thanks so much (i am really trying to get a handle on how to communicate with the digital outputs on the arduino.

my main goals are getting the audio inputs sent to the outputs.

thanks

2

is it maybe not possible to combine the two?