Re: VIC-20 RS-232 ROM Routines (was: VIC-1011A)

From: Spiro Trikaliotis (Trik-news_at_gmx.de)
Date: 2001-05-30 11:03:38

Hello,

> > question is whether Per-Olof was right. I don't know what the X-line
> > interface is, and which VIA or whatever it is connected to. Does
> > anyone want to investigate?

> Could he be referring to one of the CCITT series X Recommendations?  Like
> X.21 or some X.25 packet network terminal?  I don't know that stuff, so
> I'm just guessing.

I believe X-line interface refers to the type of communication: Normally,
there are three options with RS232:
- 3-Wire Communication (RTX/CTX/GND)
- X-wire Communication (Handshaking lines are used and connected)

Spiro.

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