Re: Computers, anyone?

Article View: alt.folklore.computers

Article #624608

Back to alt.folklore.computers Previous Next

#624608

From: Bob Eager
Date: Wed, 27 Jun 2018 08:56

20 lines
1820 bytes

On Wed, 27 Jun 2018 06:55:33 +0100, AndyW wrote:

> I was the same with an Acorn Atom, it also could be overclocked to 2MHz
> by the addition of a physical switch, some wires and careful soldering
> and a capacitor or two.

And the PC/XT motherboard (I managed to buy a PC Portable brand new for a 
bargain price).

Solder one jumper on the motherboard (I actually fitted a proper header 
and jumper). Insert a 74LS158 in the socket on the motherboard. Then 
replace the second two rows of 64kb chips with 256kb chips.

Result: 640kB actually on the motherboard - no extra wait states.

-- 
Using UNIX since v6 (1975)...

Use the BIG mirror service in the UK:
 http://www.mirrorservice.org

Technical Details

Message-ID: <fph1pvFfkj4U28@mid.individual.net>

Path: mbox-mo1.pugleaf.net!n13-v6ni6762wmc.0!nntp.google.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail

References: <pgt4m9$lcq$1@dont-email.me> <5b329400.851025687@news.xmission.com> <rFFYC.823666$3a1.307159@fx11.am4>

Show Full Headers

Complete Article Headers

X-Received: by 2002:a1c:5b0b:: with SMTP id p11-v6mr566829wmb.11.1530089794093;        Wed, 27 Jun 2018 01:56:34 -0700 (PDT)
X-BeenThere: alt.folklore.computers@googlegroups.com
Received: by 2002:a1c:c909:: with SMTP id f9-v6ls1228055wmb.5.gmail; Wed, 27 Jun 2018 01:56:33 -0700 (PDT)
X-Received: by 2002:a1c:ef0a:: with SMTP id n10-v6mr501447wmh.14.1530089793298;        Wed, 27 Jun 2018 01:56:33 -0700 (PDT)
Path: mbox-mo1.pugleaf.net!n13-v6ni6762wmc.0!nntp.google.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: Bob Eager <news...@eager.cx>
Newsgroups: alt.folklore.computers
Subject: Re: Computers, anyone?
Date: 27 Jun 2018 08:56:31 GMT
Lines: 20
Message-ID: <fph1pvFfkj4U28@mid.individual.net>
References: <pgt4m9$lcq$1@dont-email.me> <5b329400.851025687@news.xmission.com> <rFFYC.823666$3a1.307159@fx11.am4>
Mime-Version: 1.0
X-Trace: individual.net xG8wkrcCvixCfu6kFz1RGgGrcL31oEt79vjpGoP3gv+riuK4Uo
Cancel-Lock: sha1:cmtupTzjsodJAwAn7GEAn1S9PUY=
User-Agent: Pan/0.141 (Tarzan's Death; 168b179 git.gnome.org/pan2)
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit

Reply to Parent Message