I have one of these Facit too waiting to be restored. I'd be interested in your 
program.
Marc

Sent from my iPad

> On May 5, 2016, at 7:40 PM, Tom Watson <[email protected]> wrote:
> 
> Request for information about a Facit 4070.
> 
> 
> Yes, it can be hooked up to a parallel port interface.  It takes a single 
> 74LS00 chip to generate the proper signals, and the ACK signals.  I did it in 
> a simple jumper wire block (it has a male and female connector along with a 
> jumper field.
> 
> At the moment I have lost my documentation, but I have a working unit ready 
> to be dissected to produce the proper diagram (it may take a while).  I have 
> connected it to a "real" and a USB parallel port and used direct writes to 
> the parallel port device under Linux with no modification.
> 
> 
> Also if you are interested, I have a program that sends out block letters to 
> be punched on the tape (along with leader).  The letters are 5x7 and the 8th 
> is the descender for lower case letters.
> 
> The various docs for the 4070 are on Bitsavers, and you want to be sure that 
> the "option" board just has jumpers on it (as it comes from the factory).

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