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From: jkg@gitpyr.gatech.EDU (Jim Greenlee)
Newsgroups: comp.sys.m68k
Subject: Re: Comparing 68xxx's; & caveat emptor on little unix boxes
Message-ID: <3004@gitpyr.gatech.EDU>
Date: Sun, 1-Feb-87 11:15:10 EST
Article-I.D.: gitpyr.3004
Posted: Sun Feb  1 11:15:10 1987
Date-Received: Sun, 1-Feb-87 23:35:49 EST
References: <809@imagen.UUCP> <561@elmgate.UUCP> <1090@msudoc.UUCP> <1701@hoptoad.uucp>
Reply-To: jkg@gitpyr.UUCP (Jim Greenlee)
Organization: Georgia Institute of Technology
Lines: 20

In article <1701@hoptoad.uucp> gnu@hoptoad.uucp (John Gilmore) writes:
>The 68008 is the same, but only has an 8-bit bus and 20-bit address bus,
>using a 40-pin package, which is easier to fit on a circuit board.
>The Sinclair QL is a 68008 machine.

A minor point....

The 68008 comes in either a 48-pin DIP or a 52-pin LCC. The 48-pin package 
has 20 address lines (1 Meg. address space), and the 52-pin version has 22 
address lines (4 Meg. address space). The other 2 pins on the 52-pin part
are BGACK* and separate IPL0* and IPL2* (the 48-pin part combines IPL0* and
IPL2* into one pin - only interrupt levels 0, 2, 5, and 7 are detectable).
The programmer's model is identical between the 68000 and 68008.

						Jim Greenlee
-- 
The Shadow...!{akgua,allegra,amd,hplabs,ihnp4,seismo,ut-ngp}!gatech!gitpyr!jkg

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