Path: utzoo!attcan!uunet!know!zaphod.mps.ohio-state.edu!mips!daver!wombat!george
From: george@wombat.UUCP (George Scolaro)
Newsgroups: comp.sys.m68k
Subject: Re: What company makes the 68070?
Message-ID: <3375@wombat.UUCP>
Date: 9 Oct 90 16:54:12 GMT
References: <8b4BSYy00Uh7E2nmco@andrew.cmu.edu>
Organization: Association for the Prevention of Polar Bears and Kangaroos
Lines: 17

In article <8b4BSYy00Uh7E2nmco@andrew.cmu.edu> rh2y+@andrew.cmu.edu (Russell E. Hoffman, II) writes:
>Signetics make the 68070. It is roughly a 68000 clone with some on board
>goodies like DMA, serial ports, and some other things.

But a fair bit slower than a 68k. It only has one accumulator which it
must share for both normal stuff + address calculations. Some of the
instructions with the fancier addressing modes approach 1/2 the speed of
a 68k.

Another 68k clone that uses the same core as Moto (2nd source) and is cmos
and has 3 uarts, 3 timers, bus timing features + general I/O (like centronics
support) but no DMA is made by Toshiba - TMP68301.

regards,
-- 
George Scolaro
george@wombat.bungi.com                [37 20 51 N / 122 03 07 W]