Today I received.....

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

Postby vanekp » Wed Oct 25, 2017 4:43 pm

be a bit hard as its on a disc :wink: "Disc Hobbit, Battle of Britain and Castle Quest. "

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

Postby Lardo Boffin » Wed Oct 25, 2017 5:03 pm

What’s the normal PAGE value just for DFS? I think mine was &1E00.
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Retroclinic Datacentre + HDD, matchbox co-proc, Viglen twin 40/80 5.25" discs, acorn cassette
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc, Acorn 6502 coproc

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vanekp
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Re: Today I received.....

Postby vanekp » Wed Oct 25, 2017 5:08 pm

&1900 but if you not opening files with open in open out you can push page down to &1100.

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

Postby Lardo Boffin » Wed Oct 25, 2017 5:36 pm

Cool. I will try setting page to &1900 and see if that helps.
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Retroclinic Datacentre + HDD, matchbox co-proc, Viglen twin 40/80 5.25" discs, acorn cassette
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc, Acorn 6502 coproc

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vanekp
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Re: Today I received.....

Postby vanekp » Wed Oct 25, 2017 7:12 pm

Maybe an idea to move this to its own thread and not under "Today I received..." :wink:

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DutchAcorn
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Re: Today I received.....

Postby DutchAcorn » Wed Oct 25, 2017 8:39 pm

vanekp wrote:be a bit hard as its on a disc :wink: "Disc Hobbit, Battle of Britain and Castle Quest. "

Ah, yes, that would take a bit long then :oops:

Actually page on my BBC model B with Acorn DFS is at &1D00. I guess also a subject for a different thread..
Paul

VincentVega
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Re: Today I received.....

Postby VincentVega » Thu Oct 26, 2017 11:00 am

An OSSC (Open Source Scan Converter):

Image
Image
Image
Image
Image

I haven't tried it out yet, but I'm hoping it's less of a faff than my Framemeister, which I find overcomplicated; it also doesn't give the greatest of pictures with my Sony TV and has an annoying "feature" whereby the picture goes blank for several seconds when the screen resolution changes.

Hopefully it'll be a good buy and I can off-load my Framemeister somewhere.

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hoglet
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Re: Today I received.....

Postby hoglet » Thu Oct 26, 2017 12:06 pm

A couple of days ago I received a replacement CPU board for my HP 16702B logic analyzer (a.k.a. the Beast!):
16700B-CPU-TOP.jpg

16700B-CPU-BOTTOM.jpg

(library pictures, i.e. not the actual board)

The big chip is a 150MHz PA RISC processor (a PA-7300LC).

And it works!
Last edited by hoglet on Thu Oct 26, 2017 12:12 pm, edited 2 times in total.

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flaxcottage
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Re: Today I received.....

Postby flaxcottage » Thu Oct 26, 2017 12:11 pm

An obscure Texas calculator, the MBA.

MBA.jpg


It was obtained from the USA as 'untested' since there was no charger. It uses a rechargeable battery pack that includes two NiCd cells and a DC-DC voltage converter to produce 9v to power the calculator. The NiCD cells were totally shot as expected, oozing the nasty crud familiar to Archimedes owners.

Unfortunately the crud had attacked the integral voltage converter board and it was not working. A clean with vinegar and water restored the function of the voltage converter; it was producing 9.22v from a 2.4v input. Connecting the converter to the calculator (interesting since in this model Texas use a red wire for negative and a black wire for positive!! :shock: :? ) and powering up from a stabilised 2.4v supply and the calculator burst into life.

My next job is to replace the NiCd cells and restore the calculator to fully working condition. And, yes, I shall be using NiCd cells for replacement as that is what the charger circuit expects. The calculators are stored minus the battery packs and the packs sealed inside plastic bags remote from the calculators.

Another piece of retro gear given a new lease of life. :D
- John

Currently running Level 4 Econet with BBC B, BBC B+ 128K, Master 128K, 4Mb A3000, 4Mb A3020, 4Mb A4000, 4Mb A5000 dual FDD; UK101; HP41CX setup; Psion 3a, 3mx and 5mx; Z88; TI-58c, TI-59 and printer, HP-16C programmer's calculator

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richardtoohey
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Re: Today I received.....

Postby richardtoohey » Thu Oct 26, 2017 10:32 pm

flaxcottage wrote:the calculator burst into life
=D> Had to re-read it, though, first time I thought it said "burst into fire"! :shock:

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flaxcottage
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Re: Today I received.....

Postby flaxcottage » Fri Oct 27, 2017 1:32 pm

Ha Ha! I am not the BeebMaster. :twisted:
- John

Currently running Level 4 Econet with BBC B, BBC B+ 128K, Master 128K, 4Mb A3000, 4Mb A3020, 4Mb A4000, 4Mb A5000 dual FDD; UK101; HP41CX setup; Psion 3a, 3mx and 5mx; Z88; TI-58c, TI-59 and printer, HP-16C programmer's calculator

ajw99uk
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Re: Today I received.....

Postby ajw99uk » Sun Oct 29, 2017 8:41 am

Commie_User wrote:I'll have a second look....

Looks like they were trying for a Spitfire alright. But it doesn't look rounded enough where the wing meets the body for my taste. And the body looks thinner like a Stuka.

The elliptical trailing edge is very Spitfire. Mark V with a pair of 20mm cannon?
Running RISCOS: A5000, A540, R140, RiscPC, RPi B
Running *nix: SGI Fuel & Indigo2, RPi2, x86, amd64, RiscPC, A540, R140

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trixster
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Re: Today I received.....

Postby trixster » Sun Oct 29, 2017 1:26 pm

IMG_6289.JPG
A PowerMac G5 2.7ghz dual processor which I intend to install MorphOS on
A3020 | A3000 | BBC B + 128K RAM/ROM + 20K Shadow + Pi0 + VideoNuLA
BBC Master Turbo + DC | Atom | A1200 060 | A500 | Jaguar | A420/1
A4000/040 060 | Atari Falcon 060 | Saturn | PS1 | SNES | CPC6128 | C64 | 3DO | MD

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vanekp
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Re: Today I received.....

Postby vanekp » Tue Oct 31, 2017 5:54 pm

A new UM6502A CPU for my BBC :D
NewUM6502ACPU.png

Peter.

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flaxcottage
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Re: Today I received.....

Postby flaxcottage » Wed Nov 01, 2017 2:58 pm

A Texas SR-52 calculator.

SR-52.jpg


This is a monster!

It has had a hard life over its 40+ years of use. The keyboard shows evidence of corrosion from damp and the case has a number of scratches and dings. Inside the battery terminals have corroded away and the battery pack is covered in white NiCd crud.

However, on slowly powering it up just in case any electrolytics had degraded (using a stabilised variable PSU) it burst into life! \:D/ The keyboard is very responsive and all the keys work with a light touch with no double triggering. It passes all the calculator forensics. :D

The magnetic card reader is really perished and will need to be cleaned and restored. It came with some magnetic cards and a user manual so I can test its programming ability and its ability to save/load programs when I have finished restoring it.
- John

Currently running Level 4 Econet with BBC B, BBC B+ 128K, Master 128K, 4Mb A3000, 4Mb A3020, 4Mb A4000, 4Mb A5000 dual FDD; UK101; HP41CX setup; Psion 3a, 3mx and 5mx; Z88; TI-58c, TI-59 and printer, HP-16C programmer's calculator

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DutchAcorn
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Re: Today I received.....

Postby DutchAcorn » Wed Nov 01, 2017 3:30 pm

Now I also find I am looking at calculators. My brother used to have one in the early eighties. What is a reasonable price for one of these?
Paul

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1024MAK
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Re: Today I received.....

Postby 1024MAK » Wed Nov 01, 2017 3:54 pm

Oh my! Calculatorfever is catching....!
For a "Complete BBC Games Archive" visit www.bbcmicro.co.uk NOW!
BeebWiki‬ - for answers to many questions...

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flaxcottage
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Re: Today I received.....

Postby flaxcottage » Wed Nov 01, 2017 8:51 pm

DutchAcorn wrote:Now I also find I am looking at calculators. My brother used to have one in the early eighties. What is a reasonable price for one of these?


That is difficult to say. The SR-52 I got was not working and in a pretty poor state but did include the battery pack, magnetic cards, case and manual and was just over 20GBP. For a fully working calculator with manuals, case and charger in good cosmetic condition you could expect to pay over 100GBP. A similarly equipped TI-59 could be anything from 50GBP upwards.

The problems with these old TI calculators generally are;

- massive corrosion on the battery pack/missing battery pack/PCB corrosion
- keys not making proper contact or triggering multiple copies
- damage to the electronics due to using the mains charger without batteries
- broken, missing or corroded battery contacts
- missing manuals
- missing chargers
- missing case
- missing or damaged magnetic cards
- card reader capstan wheel degraded/ read/write head dirty

Spares are almost impossible to find. Other cheaper TI calculators could be cannibalised for specialised components. The SR-52 card reader is a particular problem. The capstan wheel has an outside diameter of about 8-8.3mm and an inside diameter of 4mm. Sourcing a suitable alternative is a nightmare. At the moment I am looking at vacuum hose intended for motor cars. I'll keep posting on my progress.

1024MAK wrote:Oh my! Calculatorfever is catching....!


Indeed it is. The problem I have found is that I HAVE to extend my collection to get items such as chargers and battery packs in a good enough state for refurbishment. At least that is what I keep telling myself. :lol:
- John

Currently running Level 4 Econet with BBC B, BBC B+ 128K, Master 128K, 4Mb A3000, 4Mb A3020, 4Mb A4000, 4Mb A5000 dual FDD; UK101; HP41CX setup; Psion 3a, 3mx and 5mx; Z88; TI-58c, TI-59 and printer, HP-16C programmer's calculator

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jonb
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Re: Today I received.....

Postby jonb » Thu Nov 02, 2017 7:14 am

flaxcottage wrote:The problem I have found is that I HAVE to extend my collection to get items such as chargers and battery packs in a good enough state for refurbishment. At least that is what I keep telling myself. :lol:


I wouldn't sweat it too much if I were you, John. Calculators are much smaller than computers, so you can collect many, many more before you start to run out of space (as I have). Now I am sitting in a small bedroom surrounded by old computers that seldom get used, and wondering what I have done... I think it is a form of acquisition guilt. :?

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

Postby Lardo Boffin » Thu Nov 02, 2017 9:24 am

jonb wrote:Now I am sitting in a small bedroom surrounded by old computers that seldom get used, and wondering what I have done... I think it is a form of acquisition guilt. :?


I know what you mean. I now have more ZX81s than fingers. I only have just the two beebs as they are so large!
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Retroclinic Datacentre + HDD, matchbox co-proc, Viglen twin 40/80 5.25" discs, acorn cassette
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc, Acorn 6502 coproc

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jonb
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Re: Today I received.....

Postby jonb » Thu Nov 02, 2017 10:48 am

Lardo Boffin wrote:I now have more ZX81s than fingers.


Not sure why you would have so many of them, but hats off to you!
=D>

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

Postby Lardo Boffin » Thu Nov 02, 2017 11:00 am

jonb wrote:
Lardo Boffin wrote:I now have more ZX81s than fingers.


Not sure why you would have so many of them, but hats off to you!
=D>


To be fair some of them are being refurbished and will (hopefully) go to new homes!
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Retroclinic Datacentre + HDD, matchbox co-proc, Viglen twin 40/80 5.25" discs, acorn cassette
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc, Acorn 6502 coproc

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1024MAK
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Re: Today I received.....

Postby 1024MAK » Thu Nov 02, 2017 12:56 pm

jonb wrote:
Lardo Boffin wrote:I now have more ZX81s than fingers.


Not sure why you would have so many of them, but hats off to you!
=D>

One for each of the nuclear turbine-generators in the back garden.... :lol:
For a "Complete BBC Games Archive" visit www.bbcmicro.co.uk NOW!
BeebWiki‬ - for answers to many questions...

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

Postby Lardo Boffin » Thu Nov 02, 2017 2:32 pm

1024MAK wrote:
jonb wrote:
Lardo Boffin wrote:I now have more ZX81s than fingers.


Not sure why you would have so many of them, but hats off to you!
=D>

One for each of the nuclear turbine-generators in the back garden.... :lol:


I need all those generators to power all those ZX81’s! #-o
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Retroclinic Datacentre + HDD, matchbox co-proc, Viglen twin 40/80 5.25" discs, acorn cassette
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc, Acorn 6502 coproc

Commie_User
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Re: Today I received.....

Postby Commie_User » Thu Nov 02, 2017 11:26 pm

Maybe you need a string of them to equate to the capabilities of one BBC B.

Remember the US air force strung together a bunch of Playstation 3's to make a supercomputer......?

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

Postby Lardo Boffin » Fri Nov 03, 2017 11:21 am

Commie_User wrote:Maybe you need a string of them to equate to the capabilities of one BBC B.


Don’t underestimate the power of the Dark Side...

Hi res graphics? Check.
DDAA5334-28E7-4A65-A8E2-E8D995876591.jpeg


Colour? Check.
517465CF-DBEB-4A8B-8C96-456C5E6217D9.jpeg


C9C9722A-927D-49DE-A281-D7D5CD659BAA.jpeg


The ZX81 is running the screen, not the Apple :D
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Retroclinic Datacentre + HDD, matchbox co-proc, Viglen twin 40/80 5.25" discs, acorn cassette
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc, Acorn 6502 coproc

Commie_User
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Re: Today I received.....

Postby Commie_User » Fri Nov 03, 2017 11:35 am

It does look impressive with a proper expansion: https://www.youtube.com/watch?v=pjyTaPXhhcc

But even unexpanded, 1K Chess was also pretty impressive for it.

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Multiwizard
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Re: Today I received.....

Postby Multiwizard » Fri Nov 03, 2017 11:36 am

Lardo Boffin wrote:
Commie_User wrote:Maybe you need a string of them to equate to the capabilities of one BBC B.


Don’t underestimate the power of the Dark Side...

Hi res graphics? Check.

The ZX81 is running the screen, not the Apple :D
Oh nice pics... :D

Looks really good... =D>


Greetings, Wim... :-)

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

Postby Lardo Boffin » Fri Nov 03, 2017 11:40 am

Commie_User wrote:It does look impressive with a proper expansion: https://www.youtube.com/watch?v=pjyTaPXhhcc

But even unexpanded, 1K Chess was also pretty impressive for it.


Yep. Mine has the ZXpand with sound board and the ZXChroma for the SCART connector and colour.

1k chess was an impressive programming feat!
BBC model B 32k issue 4, 16k sideways RAM, Watford 12 ROM board, Retroclinic Datacentre + HDD, matchbox co-proc, Viglen twin 40/80 5.25" discs, acorn cassette
BBC model B 32k issue 7, turboMMC, Opus Challenger 3 512k, Pi 3 coproc, Acorn 6502 coproc

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vanpeebles
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Re: Today I received.....

Postby vanpeebles » Sat Nov 04, 2017 9:54 pm

"Just give me a ZX81 and I'll rule the world"


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