Facit 4070 to PC interface
curiousmarc3 at gmail.com
Fri May 6 15:25:02 CDT 2016
I have one of these Facit too waiting to be restored. I'd be interested in your program.
Sent from my iPad
> On May 5, 2016, at 7:40 PM, Tom Watson <tsw-cc at johana.com> 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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