Re: ADT under Apple II emulation on Apple III?

[David Wilson <mcs6502@gmail.com>]

On Dec 7, 4:19 pm, "N.N. Thayer" <nntha...@hotmail.com> wrote:
> One other note: I'm using a direct DB9 male/DB25 female cable, no null
> modem or anything like that.  Not entirely sure what difference that
> makes with respect to the III's hardware.

I suspect that you will need a null-modem cable. Easy way to test:

1) On PC, run HyperTerminal and configure it for the COM port and baud
rate you want to use (set Flow control to None).
2) On Apple III in II mode, PR#n where n is the serial card slot.
3) Type on Apple III keyboard and watch for characters appearing in
HyperTerminal window.

This was how I tested my homemade cable for my IIc to PC connection.