1) An SAA5243 (for the UK/Europe -- I think the 60Hz-vertical
version is
the SAA5245) This is actually a teletext display IC for televisions,
and
is controlled via an I2C bus (2 wires). The nice feature is that the
If you can get the SAA5246 you can do either PAL or NTSC video rates
(software selectable).
3) Some way of generating a 6MHz clock. A 74LS04 + a crystal, for
example.
The 5246 has an onboard clock generator so you only need a 27MHz
xtal.
You get a 40*25 text display (upper and lower case) with
teletext-style
block graphics and serial colour attributes. Not bad for 3 chips and
2
port lines.
You can, with the 5243 or 5246, have either 8 pages of 25x40 or four pages
of 27x40.
Another advantage is that the 5246 has the video processor (SAA5231)
integrated so you can genlock your display.
Lee.
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Received on Mon Aug 27 2001 - 17:40:56 BST