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From: ForthNet@willett.pgh.pa.us (ForthNet articles from GEnie)
Newsgroups: comp.lang.forth
Subject: forth engines/TDS9090
Message-ID: <2080.UUL1.3#5129@willett.pgh.pa.us>
Date: 9 Dec 90 23:33:33 GMT
Organization: String, Scotch tape, and Paperclips.  (in Pgh, PA)
Lines: 30

Category 6,  Topic 49
Message 4         Sun Dec 09, 1990
B.RODRIGUEZ2 [Brad]          at 11:21 EST
 
O.K. Ray, you asked for it: the TDS9090 series is made by Triangle Digital
Services Ltd., 100a Wood Street, Walthamstow, London U.K. E17 3HX.  Their U.S.
distributor is The Saelig Co., 1193 Moseley Road, Victor, NY 14564, telephone
716-425-3753, fax 716-425-3835. Alan Lowne of Saelig Co. puts in an appearance
on GEnie occasionally.

It's based on the Hitachi 6303, which is Hitachi's version of the 6801/6803
family.  It's a CMOS part with 256 bytes of RAM, two timers, a serial port,
and the usual profusion of parallel I/O.

The board is jazzed up with extra I/O, having "35 I/O lines", a watchdog
timer, 256 bytes of EEPROM (2K optional), Forth in ROM, an application RAM,
and a socket for application RAM/NOVRAM/EPROM.

The Forth in ROM is fig-Forth with a number of extensions to support the
board's I/O.  Depending on which board you buy, you can get 30K of RAM and a
16K EPROM socket (TDS9090), or 8K of RAM and a 30K EPROM socket (TDS9092).

The spiffy thing about the board is that, except for the single memory socket
(and I think an 8-pin socket for the serial EEPROM), it's all surface mount
ICs, so the whole shebang is 3"x4".

- Brad
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