On 05/09/2016 01:10, "Fritz Mueller" <fri...@fritzm.org> wrote:
> Hi all > > I¹m trying to run a real-deal vt100 on a serial port connected to Linux > (Xubunto 16.04). I¹ve got this working *pretty* well, but it looks like the > padding values in the default vt100 terminfo entry are not quite correct > when running the vt100 at 9600 I still get occasional garbage characters on > the screen, and 19200 is a hopeless mess. > > I did figure out that if the terminfo contains ³xon², the non-mandatory > padding values in the terminfo are disregarded. Removing this, then disabling > xon/xoff on both the vt100 and the tty device actually produces *better* > results apparently the turnaround on xon/xoff isn¹t quite fast enough to > keep the terminal from being swamped at higher baud rates, and padding > actually works better. But tracking down the source for the default vt100 > entry turned up a comment that admits that the padding values there are a > total guess. :-( > > So, before I go diving too much further into the terminfo-tweaking-samp, I > thought I¹d ask if anybody has a good vt100 entry already on hand? (I¹d take > one for the VT52 as well!) Interesting. I'm running a genuine VT100 from a home-made serial port (MAX3232 based) on a Beaglebone Black running Debian Jessie as part of my DECbox project and it's rock solid at 9600 baud, even with smooth scroll. I'd never given the termcap entry a moment's thought. This may or may not help, but when talking serially to a ZX Spectrum (I know, but it's still RS232 comms) I get consistent results with a genuine serial port on a laptop but with a cheap chinese USB-serial converter it just doesn't work and I put this down to incorrect grounding. -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?