On Wed, Jan 18, 2017 at 3:04 PM, Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
Evan you only have 2 sensor input ports on that Lego 9750 box
I lost track what you have connected, you should make a diagram to further your documentation I remember one button is connected for the Drive Motor So the other button is connected for the Steering Motor ? Because then you don't have any Sensor Input ports left over, in order to connect a Limit switch on the Steering Motor to prevent damage So I wondered what you had in mind, Dan
Ports 0-5 are for motors and lights. Ports 6-7 are for sensors. I am using one port from the first bank to control the drive motor, another to control the V-8 motor (just for fun; it's not actually connected to the drivetrain, kids don't need to know that!), and a third port to control the steering motor. I used a sensor in the second bank to know when the steering rack (Lego rack-and-pinion steering!) is at its maximum mechanical limit. Joystick buttons and the associated paddle 0/1 have nothing to do with the interface box, that's plugged into the standard Apple game port.
ah ok, I remember now its been a long summer :) also, I wouldn't really say there are multiple banks Those are all connected to the same 8 bit I/O port on the 6522 on that interface card which is essentially only one bank and then you have the individual ports on that one bank Some are input ports, and some are outputs ports and then their associate port# Just like the Game Port Dan