Today I received.....

on-topic Acorn-related news and discussions not covered by the other forums
markjw
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Re: Today I received.....

Post by markjw » Mon Feb 26, 2018 9:54 am

good news, replaced the two X2 caps and C9 - boots up fine, nice stable output via composite video
markjw wrote:had a BBC Micro I won on eBay turn up yesterday - Model B with an Issue 4 board and a Computer Concepts Graphics ROM - case in in good condition, just yellowed / dirty, screws missing and the feet have fallen off (were with it though so I can reattach them). Looks like it has been repaired at some point in the past as some of the memory ICs are socketed and apart from the Graphics ROM, no upgrades have been installed

Good news was it did power up with the normal beep and Caps Lock LED on - responded to the keyboard turning Shift Lock and Caps Lock LED on and off, but one of the X2 capacitors went pop so didn't test any further yet (already ordered replacements before the BBC arrived)

Hopefully going to have time to replace the capacitors over the weekend and see if it is then up and running properly. If all is working properly, going to look at the options for adding a SD card as storage

bbc_model_b.jpg

crj
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Re: Today I received.....

Post by crj » Mon Feb 26, 2018 3:20 pm

An Electron key cap from Multiwizard, and some spare key switches plus yet another batch of caps from RetroClinic.

Once Amazon gets around to delivering my key cap puller, I can tidy up the Electron a little. (-8

Image

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Multiwizard
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Re: Today I received.....

Post by Multiwizard » Mon Feb 26, 2018 6:48 pm

Hi,

actually not today but now it's complete...

Many thanks to Dave M, Ian St & Phill H for this, I can use it well... =D>


Greetings, Wim... :-)
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Last edited by Multiwizard on Tue Feb 27, 2018 6:41 am, edited 2 times in total.

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vanekp
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Re: Today I received.....

Post by vanekp » Mon Feb 26, 2018 6:50 pm

and the pcb is ???

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Multiwizard
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Re: Today I received.....

Post by Multiwizard » Mon Feb 26, 2018 6:53 pm

vanekp wrote:and the pcb is ???
Econet clock... :D


Greetings, Wim... :-)

derek
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Re: Today I received..... An Archie A3020

Post by derek » Fri Mar 02, 2018 3:41 pm

Won an Archimedes A3020 on Ebay. The seller had removed the battery.

I cleaned up the battery area, pressed all chips into sockets.

The result:
20180302_133836.jpg
A3020 with SVGA monitor
Since there is no battery, I pressed Delete on Power up and Archie started in 640x480 @ 60Mhz.

The monitor has a native resolution of 1440x900. But 640x480 is good enough.

The mouse came from another non-working A3020.

I have tested the disk drive which read a MSDOS HD disk.

I just have to fit a battery, hard drive probably a 256mb CF Card and an Econet board from the non-working A3020.
Regards,

Derek

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flaxcottage
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Re: Today I received.....

Post by flaxcottage » Fri Mar 02, 2018 6:03 pm

Very nice. :D

The A3020 is a great machine. Mine serves my Econet.
- John

Why do I keep collecting Acorn gear? I'm going to need a considerably bigger man-cave. :?

Commie_User
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Re: Today I received.....

Post by Commie_User » Sat Mar 03, 2018 2:12 pm

It never struck me that the resolution of these early-90s machines were quite so minimal. But there it is.

I see some Google images stated as being 640x480 and the like and they look so small on my machine now. And my screens are 15 years out of date. Open Paint and resize the canvas with the mouse. Everything always seemed a lot higher grade at the time.

crj
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Re: Today I received.....

Post by crj » Sat Mar 03, 2018 4:44 pm

My own shock in this respect was when I joined Livejournal back in the early noughties. User pictures there are allowed to be up to 100x100 pixels.

Someone had used a fragment of an old BBC Micro game as their user picture. Given MODE 2's screen resolution was 160x256 it was a distressingly large fragment!

RobC
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Re: Today I received.....

Post by RobC » Sun Mar 04, 2018 10:52 am

Commie_User wrote:It never struck me that the resolution of these early-90s machines were quite so minimal. But there it is.
That's possibly because they weren't. However, the resolutions available depended on your monitor: https://www.riscosopen.org/wiki/documen ... en%20Modes

You could also extend the capabilities with graphics podules (e.g. the CC Colour Card). I run my A540 at 1152x848 or 1600x600 depending on which monitor I connect it to.

Commie_User
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Re: Today I received.....

Post by Commie_User » Sun Mar 04, 2018 11:05 am

Well it's only looking back that we see the screen res' so lightweight. 640x480 did the job at school, both PC and Acorn - bit of typing, the odd multimedia CD and playing with Clipart. It was just the right resolution and our monitors probably would never have handled after-market upgrades anyway, especially for the Nimbus 286 models. Though that hi-res monochrome mode is not to be sniffed at.

But look at the screen real estate that taskbar takes up in regular colour resolution. Looking back now, that obscures a good bit. Acorn could have made the icons smaller but I suspect they wanted new users to recognise what they were looking at right away.

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Re: Today I received.....

Post by RobC » Sun Mar 04, 2018 12:56 pm

Commie_User wrote:But look at the screen real estate that taskbar takes up in regular colour resolution. Looking back now, that obscures a good bit. Acorn could have made the icons smaller but I suspect they wanted new users to recognise what they were looking at right away.
The size of the icons and icon bar depend on the screen mode used so it's definitely not a deliberate choice or else the size would have been fixed.

I doubt many Arcs ran at 640x480 BITD. All the ones at my school either ran at 640x512 or 800x600.

Commie_User
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Re: Today I received.....

Post by Commie_User » Sun Mar 04, 2018 2:29 pm

I only ever saw the stock resolution. I seem to remember being told at school that as they spent so much money on its sole Archie, it was best I didn't tinker with it. I spent a little while with Zarch and whatever small office package they had and that was it.

More recently, I saw things like the Learning Curve video with Fred Harris using the same stock configuration and I plain overlooked that the Archie could have run at anything else now. All the same, I stand by what I say about lower resolutions being a surprise from the point of nowadays. You know we used them but they didn't strike us as lo-res at the time.

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z0m8ied0g
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Re: Today I received.....

Post by z0m8ied0g » Sun Mar 04, 2018 6:51 pm

New decoration for my man cave.
It's been sitting in the back of the van until I had chance to smuggle it into the house :)

Image
Acorn... lots of Acorn... http://blog.retroacorn.net

steve3000
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Re: Today I received.....

Post by steve3000 » Sun Mar 04, 2018 7:11 pm

Commie_User wrote:It never struck me that the resolution of these early-90s machines were quite so minimal. But there it is.

I see some Google images stated as being 640x480 and the like and they look so small on my machine now. And my screens are 15 years out of date. Open Paint and resize the canvas with the mouse. Everything always seemed a lot higher grade at the time.
The Archimedes A440 (and then later A4x0/1 and A540 models) can actually generate monochrome 1440x900 resolution with no extra hardware (i.e. completely standard A440 as released back in 1987). I demonstrated this here on the A540: viewtopic.php?f=16&t=10705 and still use this resolution regularly for programming.

However back in 1987 monitors didn't exist to use such resolution.

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danielj
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Re: Today I received.....

Post by danielj » Wed Mar 07, 2018 5:36 pm

8-[ What have I actually done 8-[
DSC_3302.JPG

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vanekp
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Re: Today I received.....

Post by vanekp » Wed Mar 07, 2018 8:38 pm

1772DFS.jpg
1772 DFS :D

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Lardo Boffin
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Re: Today I received.....

Post by Lardo Boffin » Thu Mar 08, 2018 12:56 pm

An absolutely superb condition (working this time) early bread-bin!

The colour of the outside of the case matches the inside. Nice.
4806FD6E-1702-4463-A949-A079E8969232.jpeg
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Retroclinic Datacentre + HDD, Viglen twin 40/80 5.25" discs, acorn cassette, Acorn 6502 coproc
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc
BBC Master

Commie_User
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Re: Today I received.....

Post by Commie_User » Thu Mar 08, 2018 1:13 pm

Beautiful specimen. You should have it stuffed.


I mean it. I've a prime condition early one and 64c in mothballs, while more used and sun-browned ones are in active service. They are BEAUTIFUL computers when they look (and smell) still as they did. Even more than when others have been restored with retrobrite.

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Lardo Boffin
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Re: Today I received.....

Post by Lardo Boffin » Thu Mar 08, 2018 1:57 pm

Commie_User wrote:Beautiful specimen. You should have it stuffed.


I mean it. I've a prime condition early one and 64c in mothballs, while more used and sun-browned ones are in active service. They are BEAUTIFUL computers when they look (and smell) still as they did. Even more than when others have been restored with retrobrite.
My general usage one is a well worn 64C so I intend to preserve this one. It will only get occasional usage.

Back to the beeb I also recently got these:-
3CA130C5-4BC7-4841-97A8-FE9E5050C7F8.jpeg
Can’t wait to get everything out of storage and see if they work...

Edit - finally got most things out of storage and these seem to work ok! Managed to load BBC Basic from disc one, as well as a verify program. The verify program checked all the other discs out as ok.
Last edited by Lardo Boffin on Wed May 30, 2018 10:15 pm, edited 1 time in total.
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Retroclinic Datacentre + HDD, Viglen twin 40/80 5.25" discs, acorn cassette, Acorn 6502 coproc
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc
BBC Master

Commie_User
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Re: Today I received.....

Post by Commie_User » Thu Mar 08, 2018 4:07 pm

What are those? And more importantly, are they online to try?

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Lardo Boffin
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Re: Today I received.....

Post by Lardo Boffin » Thu Mar 08, 2018 5:25 pm

Commie_User wrote:What are those? And more importantly, are they online to try?
I believe they are the Z80 co processor utility discs so will be on line, probably here

http://mdfs.net/Mirror/Image/AcornCPM/
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Retroclinic Datacentre + HDD, Viglen twin 40/80 5.25" discs, acorn cassette, Acorn 6502 coproc
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc
BBC Master

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IanS
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Re: Today I received.....

Post by IanS » Fri Mar 09, 2018 12:27 am

Well, technical, as it's after midnight it was yesterday.
IMG_20180308_233407894_HDR.jpg
Can you guess what it is?

crj
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Re: Today I received.....

Post by crj » Fri Mar 09, 2018 12:49 am

Hmm. Widely-spaced 64-pin connector one end, normal 40-pin the other. 32-pin DIL socket. Four 20/24-pin narrow DILs.

That'll be the underside of an unpopulated IDE podule PCB?

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IanS
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Re: Today I received.....

Post by IanS » Fri Mar 09, 2018 12:55 am

crj wrote:Hmm. Widely-spaced 64-pin connector one end, normal 40-pin the other. 32-pin DIL socket. Four 20/24-pin narrow DILs.

That'll be the underside of an unpopulated IDE podule PCB?
Ok, it wasn't the toughest quiz. It's since been populated. It's an ICS clone, so it works with ZIDEFS. It can also be fitted directly into the motherboard, so no backplane required, I'm quite chuffed, 11 days from start to finish, half of that waiting for the PCB to arrive.
IMG_20180308_232310655_HDR.jpg

crj
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Re: Today I received.....

Post by crj » Fri Mar 09, 2018 1:04 am

IanS wrote:Ok, it wasn't the toughest quiz.
Bah. There goes my glory. :-p

Boydie
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Re: Today I received.....

Post by Boydie » Fri Mar 09, 2018 1:59 am

Lardo Boffin wrote:
I believe they are the Z80 co processor utility discs so will be on line, probably here

http://mdfs.net/Mirror/Image/AcornCPM/
Certainly look like them. IIRC, don’t they create about 13 or so discs of actual software?

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Lardo Boffin
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Re: Today I received.....

Post by Lardo Boffin » Fri Mar 09, 2018 6:57 am

Boydie wrote:
Lardo Boffin wrote:
I believe they are the Z80 co processor utility discs so will be on line, probably here

http://mdfs.net/Mirror/Image/AcornCPM/
Certainly look like them. IIRC, don’t they create about 13 or so discs of actual software?
I believe so - you have to ‘install’ them which creates various discs.
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Retroclinic Datacentre + HDD, Viglen twin 40/80 5.25" discs, acorn cassette, Acorn 6502 coproc
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc
BBC Master

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daveejhitchins
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Re: Today I received.....

Post by daveejhitchins » Fri Mar 09, 2018 7:18 am

IanS wrote:It's an ICS clone, so it works with ZIDEFS.
=D>
I notice you haven't added the cable series resistors! We found these were necessary for some drives/situations, during development. Symptomes were, IIRC, data corruption of the odd byte.

Dave H :D
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For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

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martinw
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Re: Today I received.....

Post by martinw » Fri Mar 09, 2018 9:55 am

A few silicon chips 8)
B61FF2A4-6AE2-46A0-A283-EE0160212DE1.jpeg
67EDB39C-B365-49E2-B958-3DFD000BD457.jpeg
Martin

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