http://www.techrepublic.com/photos/sinclair-zx81-teardown/6196127?tag=nl.e101
Cheers,
Norman.
--
Norman Dunbar
Dunbar IT Consultants Ltd
Registered address:
Thorpe House
61 Richardshaw Lane
Pudsey
West Yorkshire
United Kingdom
LS28 7EL
Company Number: 05132767
-
- Original Message -
From: Norman Dunbar
To: ql-us...@q-v-d.com
Sent: Wednesday, February 23, 2011 8:10 AM
Subject: [Ql-Users] 57 images of dismantling a Sinclair ZX-81.
http://www.techrepublic.com/photos/sinclair-zx81-teardown/6196127?tag=nl.e101
Cheers,
Norman
Lee Privett wrote, on 23/Feb/11 08:46 | Feb23:
I liked the following comment by one observer and couldn't put it better myself
Those were great times before the internet and IBM-compatibles distracted us from
real computing.
One of Dave's survey questions asked about the internet and
Maybe I wanted to remain ignorant :-)
Lee
- Back to the QL-
- Original Message -
From: Tony Firshman
To: ql-us...@q-v-d.com
Sent: Wednesday, February 23, 2011 9:20 AM
Subject: Re: [Ql-Users] 57 images of dismantling a Sinclair ZX-81.
Lee Privett wrote, on 23/Feb/11 08
Tony Firshman wrote, on 23/Feb/11 09:20 | Feb23:
Lee Privett wrote, on 23/Feb/11 08:46 | Feb23:
I liked the following comment by one observer and couldn't put it
better myself Those were great times before the internet and
IBM-compatibles distracted us from real computing.
One of Dave's
On 23 Feb 2011, at 13:51, Tony Firshman wrote:
where ignorance is bliss,
'Tis folly to be wise.
You should have wasted some prime internet time Googling for that (8-)#
Did anyone on the list actually go to Eton then?
At one of the schools I went to I met another pupil, a violinist, who
gdgqler wrote, on 23/Feb/11 15:20 | Feb23:
On 23 Feb 2011, at 13:51, Tony Firshman wrote:
where ignorance is bliss,
'Tis folly to be wise.
You should have wasted some prime internet time Googling for that (8-)#
Did anyone on the list actually go to Eton then?
At one of the schools I went
On 23 Feb 2011, at 16:14, Tony Firshman wrote:
Where was that - Harrow (8-)#
Sedbergh, actually.
George
___
QL-Users Mailing List
http://www.q-v-d.demon.co.uk/smsqe.htm
At 16:16 23/02/2011 +, you wrote:
Where was that - Harrow (8-)#
Sedbergh, actually.
My brother-in-law went there, a rugged institution I believe. Sarten.
___
QL-Users Mailing List
http://www.q-v-d.demon.co.uk/smsqe.htm
At 17:57 23/02/2011 +, you wrote:
My brother-in-law went there, a rugged institution I believe. Sarten.
Sparten, sorry
___
QL-Users Mailing List
http://www.q-v-d.demon.co.uk/smsqe.htm
On 23 Feb 2011, at 17:57, David Tubbs wrote:
Where was that - Harrow (8-)#
Sedbergh, actually.
My brother-in-law went there, a rugged institution I believe. Sarten.
A cold breezy place. We used to have to run up a hill called Winder when the
weather was too bad for ruggered games.
Sent: Wednesday, February 23, 2011 6:23 PM
Subject: Re: [Ql-Users] 57 images of dismantling a Sinclair ZX-81.
On Wed, Feb 23, 2011 at 2:46 AM, Lee Privett lee.priv...@gmail.com wrote:
I really do not know many benefits of the QL having full access to the
'web' compared to other more
see there is another thing, if only I had JS ROMs :(
Lee
- Back to the QL-
- Original Message -
From: Dave Park
To: ql-us...@q-v-d.com
Sent: Wednesday, February 23, 2011 6:57 PM
Subject: Re: [Ql-Users] 57 images of dismantling a Sinclair ZX-81.
On Wed, Feb 23, 2011
I have been talking to Tony (Lau is AWOL) about Minerva 2. I would
really
like to do a Minerva ROM board that allows you to choose to boot
either
Minerva 1.98 or JS ROMs, since it's always handy to have both. If I
can get
permission and licenses, I'll be doing that. If SMSQ/E fit in
64KBytes
On Wed, Feb 23, 2011 at 1:11 PM, Lee Privett lee.priv...@gmail.com wrote:
see there is another thing, if only I had JS ROMs :(
The card I'm proposing could hold a 128KByte or 256KByte PROM. By manually
switching one (128K) or two (256K) Address lines, I can manipulate any 64K
block of the PROM
That sounds great Dave, so what help do you need from me (that I can do)?
Lee
- Back to the QL-
- Original Message -
From: Dave Park
To: ql-us...@q-v-d.com
Sent: Wednesday, February 23, 2011 8:07 PM
Subject: Re: [Ql-Users] 57 images of dismantling a Sinclair ZX-81
Dave Park wrote:
I just need to check out the chip select lines on the two ROM sockets to see
how they operate - someone has said that in the $8000 socket, CS asserts for
the entire 32K block, but to me that suggests a conflict with the ROM port.
I'll want to check it out, unless someone can
At 21:47 23/02/2011 +0100, you wrote:
All this trickery finally explains to me why my innocent try to just
put a 27256 and a 27128 as replacement in 10 years ago were bound to
fail...
Marcel,
Pity I cant show my implemtation, two 27512's with a buffer chip to invert
the enables.
On Wed, Feb 23, 2011 at 1:04 PM, Marcel Kilgus ql-us...@mail.kilgus.netwrote:
Dave Park wrote:
I have been talking to Tony (Lau is AWOL) about Minerva 2. I would really
like to do a Minerva ROM board that allows you to choose to boot either
Minerva 1.98 or JS ROMs, since it's always handy
19 matches
Mail list logo
