Search found 6137 matches

by 1024MAK
Mon May 29, 2017 4:08 pm
Forum: hardware
Topic: Master Series Issue
Replies: 13
Views: 136

Re: Master Series Issue

Until you tell it the default language to use, it will not use any language, instead you have the system command line. The CO. LANG 12 tells it to set BASIC as the current language. Press BREAK so that the settings take affect. If you use another language / application, type *BASIC to get back to BA...
by 1024MAK
Mon May 29, 2017 3:42 pm
Forum: hardware
Topic: Master Series Issue
Replies: 13
Views: 136

Re: Master Series Issue

*_ but no fc The fc means flashing cursor. After a CMOS memory reset, the CMOS memory does not contain useful configuration settings. So you have to tell it how to configure itself. At the * enter the following, case not important but spaces after CO. are: CO. BAUD 4 CO. NOBOOT CO. CAPS CO. DATA 4 ...
by 1024MAK
Mon May 29, 2017 3:31 pm
Forum: hardware
Topic: Master Series Issue
Replies: 13
Views: 136

Re: Master Series Issue

The Master has TWO different disk filing systems:- ⋅ ADFS ⋅ DFS No, the Master has FOUR different filing systems: TAPE ROM ADFS DFS Since when has TAPE and ROM been disk filing systems :lol: If ADFS is the current filing system, on power up it tries to load a file directory If i...
by 1024MAK
Mon May 29, 2017 1:12 pm
Forum: hardware
Topic: Master Series Issue
Replies: 13
Views: 136

Re: Master Series Issue

The Master has TWO different disk filing systems:-
  • ADFS
  • DFS
If ADFS is the current filing system, on power up it tries to load a file from disk...

Mark
by 1024MAK
Mon May 29, 2017 12:35 pm
Forum: hardware
Topic: Master fault finding
Replies: 14
Views: 134

Re: Master fault finding

You don't have to say it twice! :lol:
by 1024MAK
Mon May 29, 2017 8:35 am
Forum: hardware
Topic: Baildon Electronics IDE Interfaces - Replication
Replies: 78
Views: 3387

Re: Baildon Electronics IDE Interfaces - Replication

While at the recent Cambridge bash, I had a go at reading the PLDs for the Issue 6C PCB. I soon realised that I'd need to spend a long time to get the whole picture - and I'd need a better set-up than loose wires into a bread-board!! So, I decided to put it off for a rainy summers day (after all we...
by 1024MAK
Mon May 29, 2017 8:16 am
Forum: off-topic
Topic: New Acorn 8bit? Should there be one?
Replies: 83
Views: 2625

Re: New Acorn 8bit? Should there be one?

Oi! My issue 1 ZX Spectrum is always naked! Mainly because it does not have a case :lol: And there was and still is plenty of hardware tinkering with ZX Spectrums (and ZX81s for that matter). The difference being that yes, to a lot of people it was just a games machine. One of the reasons that the S...
by 1024MAK
Mon May 29, 2017 7:40 am
Forum: other vintage computer hardware, software and games
Topic: Tatung Einstein TC-01 with TM-01 colour monitor fault
Replies: 6
Views: 53

Re: Tatung Einstein TC-01 with TM-01 colour monitor fault

Is it possible to feed the output of another RGB source into the TM-01 monitor? The input video signal stages of RGB monitors (be it analogue or TTL levels) are not that complex. However, it could also be a problem with the tube base PCB, or the guns themselves. One advantage of RGB monitors, is the...
by 1024MAK
Mon May 29, 2017 7:33 am
Forum: other vintage computer hardware, software and games
Topic: Tatung Einstien..
Replies: 38
Views: 3333

Re: Tatung Einstien..

I have moved the "Tatung Einstein TC-01 with TM-01 colour monitor fault" into a new thread.

Mark
by 1024MAK
Mon May 29, 2017 12:04 am
Forum: off-topic
Topic: Commodore BASIC screws up
Replies: 9
Views: 169

Re: Commodore BASIC screws up

Computer maths errors are not restricted to the 8 bitters either... Why Do Computers Suck at Math? and Why computers suck at maths. Or Google it :P

Mark
by 1024MAK
Sun May 28, 2017 6:32 pm
Forum: hardware
Topic: Is the 6502 usually socketed in the BBC B?
Replies: 2
Views: 144

Re: Is the 6502 usually socketed in the BBC B?

In the issue 3, issue 4 and issue 7 BBC Model B machines that I have, yes.

There are normally very few socketed chips in the Master machines (normally just the ROMs).

One thing to be aware of with BBC B machines, the CPU bus is maxed out if the Beeb has many expansions fitted.

Mark
by 1024MAK
Sun May 28, 2017 5:35 pm
Forum: off-topic
Topic: Commodore BASIC screws up
Replies: 9
Views: 169

Re: Commodore BASIC screws up

Floating point decimal numbers don't neatly fit in binary numbers. Floating point numbers are stored differently depending on how many bytes the designer / ROM code writer allocated in the design. BBC BASIC is good (better than most other Micros at the time), so is more accurate. For more detail, pl...
by 1024MAK
Sun May 28, 2017 5:26 pm
Forum: acorn atom
Topic: Resurrecting an Atom that has not been touched for years
Replies: 6
Views: 105

Re: Resurrecting an Atom that has not been touched for years

2. Machine was running on the 8v PSU when last used so no 5v mod done - however using a more modern 5v switched mode PSU does sound like a better long term solution for the machine - I have a spare Linksys PA100 adapter from an IP phone that is 5v 2a that should do the job if I can find the connect...
by 1024MAK
Sat May 27, 2017 9:44 am
Forum: hardware
Topic: Length of 1MHz bus cable.
Replies: 3
Views: 113

Re: Length of 1MHz bus cable.

The aim is to have a "bus" that has the shortest overall length. In an ideal world, you would have active bus terminators (like parallel SCSI). But for most normal Beeb set-ups resistive bus terminators are all that is needed. If the length of the cable is short, you can get away without h...
by 1024MAK
Fri May 26, 2017 7:23 pm
Forum: hardware
Topic: A Master List for New Retro Kit
Replies: 54
Views: 865

Re: A Master List for New Retro Kit

I know this list is intended for "new" "kit". But if something (that was produced after the hey days, but not anymore) comes up on say a well known auction site, or a trading forum, or even on this forum, it would be handy for less experienced owners to be able to find said item ...
by 1024MAK
Fri May 26, 2017 9:10 am
Forum: hardware
Topic: CMOS Battery Replacement Questions
Replies: 41
Views: 935

Re: CMOS Battery Replacement Questions

I checked the battery voltage with my newfangled digital multimeter and it read 1.16V. Is this a possible cause? Was this voltage measured when the computer was switched off, or when switched on? The nominal voltage on a single NiCad or NiMH cell when part charged and not connected to a circuit is ...
by 1024MAK
Thu May 25, 2017 3:15 pm
Forum: software: games
Topic: Mega Games Cartridge for the Electron MGC
Replies: 387
Views: 22466

Re: Mega Games Cartridge for the Electron MGC

Elminster wrote:Right time to find the post with the 'it works' USB serial adaptors and add to my 'buy after payday'' list.
Paul did give details of two U.K. suppliers in the UPURS manual. But if those don't work, try the suppliers home page. As every now and again, they move things around.

Mark
by 1024MAK
Thu May 25, 2017 10:50 am
Forum: hardware
Topic: Possibly Unscanned Acorn Circuit Diagrams - Need Help!
Replies: 6
Views: 253

Re: Possibly Unscanned Acorn Circuit Diagrams - Need Help!

Depending on the quality, it may be worthwhile scanning the items where there are already images available. In order to get much higher resolution images. I say this, because a fair number of the schematics that are available on the internet have sections that are hard to read :(

Mark
by 1024MAK
Thu May 25, 2017 10:39 am
Forum: hardware
Topic: Electron Plus 3 RAM/ROM board problem
Replies: 25
Views: 502

Re: Electron Plus 3 RAM/ROM board problem

The tip is a little bent so I had to push the pliers in further than I expected and the tip might have scratched the surface of the board. Apart from the very, very thin tracks used on modern boards, it's normally difficult to cut a track just with a surface scratch. I'm not saying it's not possibl...
by 1024MAK
Thu May 25, 2017 10:14 am
Forum: hardware
Topic: Electron Plus 3 RAM/ROM board problem
Replies: 25
Views: 502

Re: Electron Plus 3 RAM/ROM board problem

In general it depends on a number of things. I've got a couple of sad looking Plus 3 boards in storage awaiting repairs that have been "tinkered with" by others. Some of the variables are (this is a general list and not specific to a Plus 3 board): ⋅ Track width and pad size. A l...
by 1024MAK
Thu May 25, 2017 9:43 am
Forum: off-topic
Topic: bizzare substitution in private message!
Replies: 18
Views: 274

Re: bizzare substitution in private message!

Well, this is a Acorn computer forum, not a football forum.... :lol:
Who knows what "football" related words are in the swear-box filter :lol:

Mark
by 1024MAK
Thu May 25, 2017 9:25 am
Forum: for sale / freebies
Topic: Acorn Archimedes PS/2 Mouse Adapter
Replies: 16
Views: 201

Re: Acorn Archimedes PS/2 Mouse Adapter

Hi VintageMicro Welcome to StarDot :D The usual way that trading happens on StarDot forums is a member, who develops an item that he or she wishes to sell, or who has relevant "second hand" items that he or she wishes to sell posts up details of said items. Including the wanted price, cost...
by 1024MAK
Thu May 25, 2017 8:57 am
Forum: off-topic
Topic: bizzare substitution in private message!
Replies: 18
Views: 274

Re: bizzare substitution in private message!

What device were you using at the time?

Mark
by 1024MAK
Thu May 25, 2017 12:12 am
Forum: for sale / freebies
Topic: New TEAC floppy drives
Replies: 30
Views: 509

Re: New TEAC floppy drives

1024MAK wrote:Yes, I'm interested :wink:

I'm actually after 2 drives. I have a dual case with two damaged drives that need replacing.

Mark
by 1024MAK
Wed May 24, 2017 8:48 pm
Forum: hardware
Topic: Electron Plus 3 RAM/ROM board problem
Replies: 25
Views: 502

Re: Electron Plus 3 RAM/ROM board problem

Ray, what did you use to cut the chip pins? Can you post a picture of the tool you used please. When you cut the legs, did you cut near the board, or near the top of the leg of the chip? Only, it is unusual to damage tracks under a DIL chip unless an attempt is made to desolder the chip. Incidentall...
by 1024MAK
Wed May 24, 2017 3:21 pm
Forum: general
Topic: thebbclives website gone.
Replies: 26
Views: 1019

Re: thebbclives website gone.

See also this thread.

www.8bs.com is back up :D =D> =D> =D>

Thank you to those wonderful people who did all the work to restore it.

Mark
by 1024MAK
Wed May 24, 2017 3:20 pm
Forum: general
Topic: 8bs.com
Replies: 6
Views: 319

Re: 8bs.com

www.8bs.com is back up :D =D> =D> =D>

Thank you to those wonderful people who did all the work to restore it.

Mark
by 1024MAK
Tue May 23, 2017 5:34 pm
Forum: for sale / freebies
Topic: New TEAC floppy drives
Replies: 30
Views: 509

Re: New TEAC floppy drives

<very unserious mode> Can't you sneak them past customs/HMRC, Pink Panther style...

https://youtu.be/HhHwnrlZRus
</very unserious mode>

Mark
by 1024MAK
Tue May 23, 2017 5:04 pm
Forum: hardware
Topic: Palettemate / enhanced video ULA with 4096 colours
Replies: 240
Views: 7352

Re: Palettemate / enhanced video ULA with 4096 colours

@Rob =D> =D> =D>

I want one some =P~ \:D/

Mark
by 1024MAK
Tue May 23, 2017 4:38 pm
Forum: other vintage computer hardware, software and games
Topic: Fixing a Superbrain up
Replies: 147
Views: 1950

Re: Fixing a Superbrain up

A possible system with two CPUs that should enable both to do useful work at the same time often needs some shared RAM. Even better if it is dual port RAM. But such RAM is expensive :( One CPU can look after I/O devices that need a lot of attention (scanning keyboard, serial port, prarallel printer ...

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