PAiA 9700 CORRECTION

[Daniel Gendreau]

> Please enlighten me.  There is nothing in my 2.0 firmawre upgrade info
> about this.  You still have to have the hardware board though, right?
>
> Larry Hendry

I dont believe its a firmware upgrade issue. This was part of the CV8 design
from the begining.

OOPS, I just looked again. I meant pull down! SORRY ppl!

There is a resistor R54 on the board. It pulls CPU pin P1.7 LOW. If the V/Hz
board is installed, this pin will be high.

>From the Firmware:
;set up ports
		mov	p1,#11111111b		;no oct., ls 5 bits inputs
		mov	p3,#10100001b		;port 3 input lines
		mov	MODES,#0h		;init modes flags
		jnb	p1.7,V_Oct		;OctC line held low sets v/oct
		setb	V_Hz			;set v/hz (modes.7)
V_Oct:

The "jnb" statement checks P1.7. If it is LOW during startup, the V_Hz mode
is enabled.

In the instructions, it says if you are not installing the V/Hz board, you
have to jumper the DAC output to go to the S/H mux, and you have to put in
R54(dont have the directions in front of me, so this is from memory).

-Dan G.