Search found 52 matches

by jubber
Wed Nov 13, 2019 7:42 pm
Forum: for sale / freebies
Topic: VideoNuLA boards
Replies: 110
Views: 18070

Re: VideoNuLA boards

I was going to grab a link to the ones I saw on ebay a while ago so that my clueless relatives can get me something I actually want this year - but it's not there anymore. If you decide to repost on ebay, please give me a shout, or if there's a simple way to order from you directly, the details woul...
by jubber
Sun Sep 29, 2019 9:18 pm
Forum: upcoming and recent events & exhibitions
Topic: ABUG SOUTH 22 to 24 November 2019 - NOW FULL
Replies: 179
Views: 7035

Re: ABUG SOUTH 22 to 24 November 2019 (Hampshire) BOOKING THREAD

Hi - I'd like to come along. Don't know if I'll be staying over, but I'd certainly like to attend one of the days. It was nice meeting a bunch of Acorn enthusiasts last time - I'd like to see how all the crazy projects are progressing.

Cheers,

Robin
by jubber
Mon Jan 21, 2019 10:34 am
Forum: past events & exhibitions
Topic: ABUG SOUTH 18 to 20 January 2019 (Hampshire) BOOKING THREAD
Replies: 134
Views: 9191

Re: ABUG SOUTH 18 to 20 January 2019 (Hampshire) BOOKING THREAD

Cheers to Robert for sorting out the event, and for all the people who were kind enough to peer inside my dead A5000, especially Ian and Matthew. Very nice to meet lots of Acorn chaps, with a quite intimidating level of smarts on display. Learnt a lot of things, picked up a handy screen mode from To...
by jubber
Wed Dec 05, 2018 2:21 pm
Forum: projects
Topic: Mode 128x128
Replies: 6
Views: 692

Re: Mode 128x128

Well that's great information Rob - thanks very much. I'll give it a try

Cheers,

Robin
by jubber
Wed Dec 05, 2018 11:57 am
Forum: projects
Topic: Mode 128x128
Replies: 6
Views: 692

Re: Mode 128x128

Ah - so is 256 the safe limit on vertical resolution? Essentially I'm after the smallest size with 16 colours (or 4 at a push). It seems therefore that Mode 8 (horribly wide pixels) from the AUG is the safe minimum. That explains why the solution of storing graphics in the screen itself, and chasing...
by jubber
Wed Dec 05, 2018 6:54 am
Forum: projects
Topic: Mode 128x128
Replies: 6
Views: 692

Mode 128x128

Hi there - I've just bought a copy of the Advanced User Guide and at some point I'm going to try fiddling with the video display. I'm after a mode that is 16 colour, square, but as low res as possible - but will still work on a standard Beeb with any type of monitor. Before I reinvent the wheel howe...
by jubber
Tue Dec 05, 2017 2:27 pm
Forum: software: new games
Topic: New Release: Retro Software's WHITE LIGHT by Sarah Walker
Replies: 91
Views: 9255

Re: New Release: Retro Software's WHITE LIGHT by Sarah Walker

This looks absolutely tremendous - well done! The scrolling is nice and smooth, especially for the beeb. I like the fact you have music running while the game plays, and that you've chosen a multi coloured screen mode. You haven't made things easy for yourself by choosing those options. Visually the...
by jubber
Sun Nov 12, 2017 12:51 am
Forum: hardware
Topic: Master ADFS problems
Replies: 12
Views: 928

Re: Master ADFS problems

Hah! Finally, I've worked it out - many thanks for all your replies. The left hand 40/80 switch affects the right hand drive, and vice versa. This also explains why drive 1 was lighting up when *drive 0 was used, and vice versa. Somewhere inside the Cumana double disk drive, somebody presumably made...
by jubber
Sat Nov 11, 2017 11:26 am
Forum: hardware
Topic: Master ADFS problems
Replies: 12
Views: 928

Re: Master ADFS problems

I'm not sure how to tell if the drive is single sided. It has CUMANA written on the front, and a couple of switches at the back that can change between 40 and 80 track modes. I'm mainly after the setup utility - so I may try and copy that onto BEEB.MMC, and leave ADFS in the past, where it belongs. ...
by jubber
Fri Nov 10, 2017 7:23 pm
Forum: hardware
Topic: Master ADFS problems
Replies: 12
Views: 928

Re: Master ADFS problems

I'm guessing nobody makes master cartridges any more - so if I want to add roms to the Master, I'd need some sort of circuit board with a rom socket on it. I can burn eeproms, but what I know about electronic circuitry would fill the world's smallest manual. Peering inside the Master's cartridge slo...
by jubber
Fri Nov 10, 2017 6:23 pm
Forum: hardware
Topic: Master ADFS problems
Replies: 12
Views: 928

Re: Master ADFS problems

Two great hints - thanks guys! I'll try *MOUNT 1 on the other drive. I also didn't know about the rom socket link. I did see those link pins when adding mmfs to the machine, and briefly wondered what they were for. If I set them so that the two rom sockets work - does this turn my Master 128 into a ...
by jubber
Fri Nov 10, 2017 2:36 pm
Forum: hardware
Topic: Master ADFS problems
Replies: 12
Views: 928

Master ADFS problems

Hi - I've just bought a BBC Master, and it seems to be in pretty good condition. Needed to desolder a cursor key, and two of the rom sockets don't work, but MMFS and a new battery seem to fix everything else. I can even play Dunjunz using some Cumana drives and DFS. However, I got hold of a Welcome ...
by jubber
Wed Nov 08, 2017 1:45 am
Forum: hardware
Topic: User Port Switching
Replies: 5
Views: 707

Re: User Port Switching

sweh - thanks for the suggestion - that looks really really hard! Good work on figuring out how to build that. I may be going the same route as your initial switch box attempt. If I can get joystick and mmc working I'll be happy. One question - you mention having to turn off the computer between swi...
by jubber
Wed Nov 08, 2017 1:41 am
Forum: hardware
Topic: User Port Switching
Replies: 5
Views: 707

Re: User Port Switching

Thanks very much - crucially I left out "switch" when searching on these forums. From the looks of it, I'll need some ribbon cable, a couple of male 25 pin connectors (idc, for cable), a 20 pin female connector (idc, for cable), and the parallel printer switch box for everything to connect to. I'll ...
by jubber
Tue Nov 07, 2017 4:42 pm
Forum: hardware
Topic: User Port Switching
Replies: 5
Views: 707

User Port Switching

Usual aplogies if this subject has often been broached before - but I couldn't find anything about it here. I've got an MMC and some analogue joysticks, not to mention a couple of other bits and pieces lying around that could make use of the user port. Is there any suggested method to connect them b...
by jubber
Mon Aug 28, 2017 6:43 pm
Forum: software: new games
Topic: Fred the Needle
Replies: 8
Views: 1342

Re: Fred the Needle

You may be the first!

Thanks for checking it out - it's good to know somebody other than myself can complete it. Classic case of coder-designed levels - could easily be unfair.

Cheers,

Robin.
by jubber
Mon Aug 28, 2017 10:59 am
Forum: software: new games
Topic: Fred the Needle
Replies: 8
Views: 1342

Re: Fred the Needle

The linked page now has a second version of the game with much more relaxed time limits, if the proper version proves just too tough.

Cheers,

Robin.
by jubber
Mon Aug 28, 2017 10:30 am
Forum: software: new games
Topic: Fred the Needle
Replies: 8
Views: 1342

Re: Fred the Needle

Hi there - cheers for the reply! The levels are pretty tightly timed - you have to hold down Return in order to boost your way round the circuit. Easing off Return slows you a little, which can be handy for tight corners. The first map has a completion zone that is a little small - move around a bit...
by jubber
Mon Aug 28, 2017 2:57 am
Forum: software: new games
Topic: Fred the Needle
Replies: 8
Views: 1342

Fred the Needle

Something for the bank holiday weekend

http://jubberbbcmicro.webnode.com/fred-the-needle/

Cheers,

Robin.
by jubber
Sat Jun 03, 2017 6:42 pm
Forum: wanted
Topic: A5000 memory chips required
Replies: 19
Views: 2755

Re: A5000 memory chips required

Do you have some advice about how to bypass any failed connections? I assume I need some solder paste, maybe a flux pen, the hot air work station and incredibly steady hands (plus a magnifying glass, from the looks of it). Teeny tiny wire as well?
by jubber
Sat Jun 03, 2017 12:20 am
Forum: wanted
Topic: A5000 memory chips required
Replies: 19
Views: 2755

Re: A5000 memory chips required

Because the cmos circuit seems to be very badly damaged I might have to consider that option. From the instructions it seems you can snip the legs of the clock chip to disconnect the entire circuit from the rest of the computer. If I used a hot air work station to desolder the clock chip, would it a...
by jubber
Fri Jun 02, 2017 4:05 pm
Forum: wanted
Topic: A5000 memory chips required
Replies: 19
Views: 2755

Re: A5000 memory chips required

That's a great site - thanks for the link. I've been prodding around with the multimeter, and it seems pretty much all the connections are dead. I'm going to desolder the battery and remove the cmos chip next - and give that bit of the mobo a more thorough vinegar scrub. Due to all the corrosion it ...
by jubber
Thu Jun 01, 2017 9:32 am
Forum: wanted
Topic: A5000 memory chips required
Replies: 19
Views: 2755

Re: A5000 memory chips required

jumper LK24 seems okay (far bottom-right side of board, bottom two pins are connecting, top pin is bare). The jumper itself is connecting the two pins - tested with multimeter. Underneath the board I could follow the bottom pin to l36, which makes a beep. The other trace seems to go under what looks...
by jubber
Wed May 31, 2017 7:29 pm
Forum: wanted
Topic: A5000 memory chips required
Replies: 19
Views: 2755

Re: A5000 memory chips required

and danielj - thanks for the electronics store tip - interesting site
by jubber
Wed May 31, 2017 7:26 pm
Forum: wanted
Topic: A5000 memory chips required
Replies: 19
Views: 2755

Re: A5000 memory chips required

Hi dp11 - thanks for the advice -

you mean the following?
Image3.jpg
Image3.jpg (48.48 KiB) Viewed 1212 times
by jubber
Wed May 31, 2017 5:49 pm
Forum: wanted
Topic: A5000 memory chips required
Replies: 19
Views: 2755

Re: A5000 memory chips required

Hi chaps - it's quite possible my diagnosis is incorrect. I'm pretty new to electronics. I was told all the pins connect through to all the other pins like with the roms. Quite possibly bad information as pins 18 and 19 don't seem to connect any of the chips together (assuming pin 1 is bottom left h...
by jubber
Tue May 30, 2017 2:24 pm
Forum: wanted
Topic: A5000 memory chips required
Replies: 19
Views: 2755

A5000 memory chips required

Hi there. I've picked up an old and battered A5000 that appears to have suffered a battery leak. The OS gets as far as posting an error through the disk drive before giving up. I think one issue is the ram chips because pin 15 on chip 1 doesn't connect all the way through to pin 15 on the last chip....
by jubber
Wed Dec 14, 2016 4:17 am
Forum: for sale / freebies
Topic: Trading A3010
Replies: 15
Views: 1673

Re: Trading A3010

Cercamon, if you read this post - try email. I've tried sending you a private message using this board's message system, but it's just sitting in the outbox going nowhere.
by jubber
Fri Dec 09, 2016 1:49 pm
Forum: for sale / freebies
Topic: Trading A3010
Replies: 15
Views: 1673

Re: Trading A3010

Yup - it's still available. The private message thing won't let me use it until I'm a second level padawan or something - so give me a shout on rjubber at talktalk.net

Cheers,

Robin.
by jubber
Thu Dec 01, 2016 12:51 pm
Forum: software: other
Topic: Advent calendar, part 1
Replies: 14
Views: 1589

Re: Advent calendar, part 1

For some reason the link was broken (stardot's message system adds an ellipsis in the middle?)

http://bbc.godbolt.org/?autoboot&disc=h ... dvent2.ssd