6809 single board computer (was: "New" PDP-8)

From: John Honniball <coredump_at_gifford.co.uk>
Date: Mon Apr 1 12:55:43 2002

Ben Franchuk wrote:
> Jos Dreesen wrote:
> > My SWTP/c contains a third-party board called "the communicator" with a 6845
> > CRTC. Complexity is low : 6845, 2K sram, character generator and around 10 TTL
> > IC's. It produces a standard 80x25 output.
> > Jos Dreesen
> The trouble is getting a display for it. Unless it does Monochrome or
> vga output it is hard to find any monitors for anything older.

That's another dilemma: do I go for "authentic" composite video
at broadcast TV rates, or do I use a VGA monitor? If I choose
TV output, the quality's poor and the design only works right for
UK TV systems (625 line, 50Hz, PAL). It would need to be changed
if anyone wanted a US version (525 line, 60Hz, NTSC). But if
I go for VGA, well, that's 15 years old now, I suppose... just
seems too "modern", somehow.

What I'd really like to do is run the display in portrait mode.

--
John Honniball
coredump_at_gifford.co.uk
Received on Mon Apr 01 2002 - 12:55:43 BST

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