On Tue, 28 Sep 2004 16:37:02 -0500, Dave VanHorn wrote:
>=A0At 04:10 PM 9/28/2004, Richard Benfield wrote:
>=A0
>=A0>=A0where is the need for firewire ? Think about how you use a scope.
>=A0>=A0you only need 1024 samples per
>=A0screen
>=A0>=A0refresh probably less, with 1024 samples *2*8bit analogue channel=
s
>=A0>=A0+
>=A016 x 1
>=A0>=A0bit channels that's only 4 k per screen * 50 Hz =3D 200KB/s prett=
y
>=A0easy for an
>=A0>=A0of the shelf FTDI usb1 device.
>=A0
>=A0
>=A0You may only be looking at 1024, but I'd want deeper memory, and the
>=A0ability to zoom in and out, and scroll.

Amen brother VanHorn! The first time I captured a *complete* 8-10 byte
SPI transfer (SDI, SDO, CLK and CS) and was able to zoom in on and then=20
scroll the whole waveform across the screen checking it bit by bit... I=20
was in debug heaven!=20

Add to that the ability to combine triggering with your digital and
analog channels and you're on to something.=20

Anyone who has never had the luxury of doing this probably can't=20
appreciate it, but it's absolutely addictive and unbelievably useful.

Matt Pobursky
Maximum Performance Systems

_______________________________________________
http://www.piclist.com
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist