<Hi all,
<Today I bought a SC/MP wirewrapped board. Does anyone know of a site with
<data sheet? My search came up with what is known as "SC/MP II", including
<description of a "MK14" project in Practical Electronics mag. In
<particular, the chip on my board requires an unknown neg. voltage on pin
<40, instead of +5 Volts on the later NMOS versions. The actual part No. is
<ISP-8A/500D
That is the early Pmos part (SC/MP and not the II) and the voltage there
is -7v (Vgg). Never saw that particular schematic (Practical Elect.) there
was one in an early kiloboaud, byte or interface age you could look at for
more info.
I have a working example of the inexpensive board national sold with that
chip, 256bytes of ram and a monitor.
I'd doubt there is a site with a data sheet unless someone got permission
form National Semi to scan one.
Allison
Received on Sun May 30 1999 - 11:24:48 BST