[aprssig] TNC220 ok for UI-DIGI ?
Stephen H. Smith
wa8lmf2 at aol.com
Fri Mar 11 13:56:14 CST 2005
vk4tec at tech-software.net wrote:
>Whats constitutes a TNC2 Clone ?
A TNC based on the original TAPR (Tucson Amateur Packet Radio
organization) TNC2 design that will run with the TAPR firmware. TAPR
developed the hardware design and firmware, offered kits and bare
boards, and also licensed the design to several commercial
manufacturers. Some, such as MFJ127x series and some Paccom units,
actually used some or all of the TAPR-designed PC board layout as-is.
Some of the attributes of this design were: Z80-based, up to 32K of
static RAM, firmware in a 27576 EPROM space or equivalent (early units
often had one or two 2764s, later ones had a single 27256), an XR2211
modem chip, etc.
Stephen H. Smith wa8lmf (at) aol.com
Home Page: http://wa8lmf.com
New/Updated "Rev G" APRS http://webs.lanset.com/wa8lmf/aprs
Symbols Set for UI-View,
UIpoint and APRSplus:
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