Search found 64 matches

by stephen_usher
Thu May 16, 2019 8:23 am
Forum: Software & Programming
Topic: TTY ANSI Terminal
Replies: 12
Views: 595

Re: TTY ANSI Terminal

Hi, It works, I realised that serial `ttyS1' has to be respawned using `getty' (get tty on serial line). These settings works here with `terminal-3-53' defaults. 2400 SER2IR XON/OFF $ stty -F /dev/ttyS1 2400 cs8 cstopb cooked -crtscts echo $ /sbin/getty -L ttyS1 vt52 # needs root priviledges I wish...
by stephen_usher
Mon May 13, 2019 10:34 pm
Forum: Software & Programming
Topic: TTY ANSI Terminal
Replies: 12
Views: 595

Re: TTY ANSI Terminal

tcat wrote:Hi Stephen,

I have discovered your sources here, I may try to assemble. I noticed the assembly makes use of local labels.

https://www.earth.ox.ac.uk/~steve/software/terminal/

Many thanks
Tom


Oh! I'd forgotten that I'd made that page!

:-)

I used the Computer One assembler and linker.
by stephen_usher
Mon May 13, 2019 9:09 pm
Forum: General QL Chat
Topic: What makes the OS for QL any better, different, unique ?
Replies: 18
Views: 793

Re: What makes the OS for QL any better, different, unique ?

Although the QL came earlier than ST and Mac, the multitasking scheduler was already preemptive - technologically superior to the cooperative multitasking of the other machines, where every program could block the whole system. One moment... Neither the original Macintosh nor the Atari ST have had ...
by stephen_usher
Mon May 13, 2019 9:00 pm
Forum: Software & Programming
Topic: TTY ANSI Terminal
Replies: 12
Views: 595

Re: TTY ANSI Terminal

If I could get the source and binary off one of my QL floppies I could send you my VT52+T4010 terminal emulator. I wrote it back in 1988. It actually emulates the University College London BBC terminal emulator, including extensions to program the function keys via *FX commands. :-) I've a USB flopp...
by stephen_usher
Mon Apr 08, 2019 10:19 pm
Forum: Hardware
Topic: RGB to SCART Video * solved *
Replies: 13
Views: 666

Re: RGB to SCART Video * solved *

You could think of the TTL signal as a three line parallel digital signal but that's not how the TV/monitor sees it as it's treated as three sets of analogue signals. These are then put through an A-to-D converter. Scan line synchronisation could be an analogue circuit like old monitors or it could ...
by stephen_usher
Sun Apr 07, 2019 10:13 pm
Forum: General QL Chat
Topic: Neat QL Brochure
Replies: 4
Views: 306

Re: Neat QL Brochure

I think I got that pamphlet before I got the QL. What I noticed was that the QL printed on the front (when folded out) was life size, which nicely showed how big the QL was. I think I still have two copies around. I don't know if a similar pamphlet was used in the UK, but this one was written for t...
by stephen_usher
Sun Apr 07, 2019 10:08 pm
Forum: Hardware
Topic: RGB to SCART Video * solved *
Replies: 13
Views: 666

Re: RGB to SCART Video * solved *

If you try and OSSC, which does cost a lot more but is worth it, it's better than you'd get with a TTL RGB display. That would be a magical transformation indeed. Even higher fidelity than the original. That's easy, CRTs smear sideways due to the speed at which the beam can switch on and off and ar...
by stephen_usher
Sun Apr 07, 2019 10:28 am
Forum: Hardware
Topic: RGB to SCART Video * solved *
Replies: 13
Views: 666

Re: RGB to SCART Video * solved *

I have tried OSSC. The picture I get with a cheap Chinese scaler on a cheap Chinese PC is way better than from OSSC together with an expensive NEC Multisync - So your mileage may vary. It is, however, a bit of a lucky game with the Chinese scalers whether you get them to work properly with your spe...
by stephen_usher
Sun Apr 07, 2019 9:24 am
Forum: Hardware
Topic: RGB to SCART Video * solved *
Replies: 13
Views: 666

Re: RGB to SCART Video * solved *

Those cheap scalers are OK, though it depends upon the TV as to whether they will display the extra characters, most don't. As for scalers being "fuzzy", well the cheap ones (which are really designed for video) do rubbish interpolation and also erroneously sharpen the image, so they don't...
by stephen_usher
Tue Apr 02, 2019 10:30 pm
Forum: Hardware
Topic: WD1772 vs DP8473V
Replies: 8
Views: 469

Re: WD1772 vs DP8473V

If you want HD then the 1772 can be overclocked to 16MHz to do this, as used in the Atari TT030.