On 08-Jan-02 Josh Koffman wrote:
> This sounds interesting. Is it just a small oscilloscope?

Normal sized display (about 5"x4" I guess).  I used a pair of old ZN425E DACs
that I "borrowed" from an old Z80 basec project.  The 'scope has a DC coupled
Z-mod input that will blank the display with a +5V signal.

Using a 10Mhz Xtal I can display the full 10x8 characters without flicker.
I used a test pattern of repeated A-Z (it only displays upper case) but the
refresh rate would drop lower with a worst case of all "8"s (8 has the most
vectors in it I think)
8 is draw like this ....
                     _
                    / \
                    \_/
                    / \
                    \_/

Peter.


----------------------------------
E-Mail: Peter Onion <ponion@srd.bt.co.uk>
Date: 08-Jan-02
Time: 09:57:19

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