Search found 74 matches

by Bagpuss
Sat Mar 31, 2018 6:54 pm
Forum: hardware
Topic: Master floppy interface not working
Replies: 2
Views: 278

Master floppy interface not working

I'm on a bit of a roll with getting my old Beebs running at the moment. Just dug my second Master Turbo out of the loft, and everything works apart from the floppy interface. I've cleaned up the pins and confirmed the continuity between the connector and the opposite end of the cable. Plugging in ei...
by Bagpuss
Sat Mar 31, 2018 1:25 pm
Forum: software: new games
Topic: New version of Frogger (was: A demo of what is looking like a new Frogger for the beeb)
Replies: 191
Views: 28256

Re: New version of Frogger (was: A demo of what is looking like a new Frogger for the beeb)

Rob, do you happen to know if the cheap xilinx copy programmer listed for the Matchbox Copro will work? I did wonder about that, as I've got the Xilinx too. I think it should, but I ended up buying this . Works well, unless you're using Windows 10 x64. If you are, then the drivers that come with th...
by Bagpuss
Thu Mar 29, 2018 1:32 pm
Forum: software: new games
Topic: New version of Frogger (was: A demo of what is looking like a new Frogger for the beeb)
Replies: 191
Views: 28256

Re: New version of Frogger (was: A demo of what is looking like a new Frogger for the beeb)

Just in case it helps, this is what the game actually looks like:
nula-broken.jpg
I've just noticed that the colours for the bottom and middle 'kerbs' are green instead of magenta.
by Bagpuss
Thu Mar 29, 2018 11:32 am
Forum: software: new games
Topic: New version of Frogger (was: A demo of what is looking like a new Frogger for the beeb)
Replies: 191
Views: 28256

Re: New version of Frogger (was: A demo of what is looking like a new Frogger for the beeb)

Hi Richard, I've just tried the new SSD on my NuLA equipped Master and the game runs with standard colours only. I've got the 1.02 version of the NuLA rom installed, and other NuLA enabled demos etc. work just fine. There might be one small difference in my setup, as I have just updated the NuLA wit...
by Bagpuss
Wed Mar 28, 2018 11:24 am
Forum: for sale / freebies
Topic: BeebSCSI full size + internal VFS adaptor boards
Replies: 106
Views: 7035

Re: BeebSCSI full size + internal VFS adaptor boards

Scratch that. Just realised that I'm about 3 weeks behind the times.... :-(
Really must remember to subscribe to these threads.

Hi Daniel,

If the VFS board you just mentioned on Facebook is still available, then I'd like to take it, please.

Thanks,

Andy.
by Bagpuss
Tue Mar 27, 2018 10:07 am
Forum: hardware
Topic: Gotek question around image compatibility
Replies: 11
Views: 1203

Gotek question around image compatibility

Hi All, Just finished building my Gotek with OLED screen, rotary control and piezo sounder (Thanks danielj for the excellent video tutorial =D> ). I started off with the flashfloppy firmware, which works fine, but still lacks SSD and DSD support. I'm trying to avoid having to do any image conversion...
by Bagpuss
Mon Mar 26, 2018 9:34 am
Forum: for sale / freebies
Topic: BeebSCSI mini
Replies: 168
Views: 19076

Re: BeebSCSI mini

flynnjs wrote:Sorry, had a bout of illness recently and it's put me behind a bit. I'm hoping to have these finished this week.
No worries at all. Hope you're feeling better now. I'm just grateful that folks like yourself and Simon put so much effort into bringing these projects to life in the first place. :-D
by Bagpuss
Sun Mar 25, 2018 1:36 pm
Forum: hardware
Topic: Questions about BBC B memory fault
Replies: 18
Views: 1036

Re: Questions about BBC B memory fault

Just when you think you've got things working... My issue 4 that I thought was working fine has now developed an interesting fault. I've run pretty much every test I can think of on the machine, and I'm still seeing the occasional speckle on a mode 0 screen. It often happens when you type. In fact, ...
by Bagpuss
Sun Mar 25, 2018 12:44 pm
Forum: hardware
Topic: Questions about BBC B memory fault
Replies: 18
Views: 1036

Re: Questions about BBC B memory fault

Killer Gorilla works just fine on both machines.
by Bagpuss
Sun Mar 25, 2018 12:42 pm
Forum: for sale / freebies
Topic: New TEAC floppy drives
Replies: 55
Views: 6600

Re: New TEAC floppy drives

I'd definitely be interested in 2x drives if you do another order.
by Bagpuss
Sun Mar 25, 2018 12:35 pm
Forum: hardware
Topic: Questions about BBC B memory fault
Replies: 18
Views: 1036

Re: Questions about BBC B memory fault

Just had one final question. I've been running some tests on the newly fixed machine, and all appears to work just fine, apart from the original Acornsoft Defender. All of the alien graphics plot on top of each other. I'm using the version that comes with big games menu. I know that this version can...
by Bagpuss
Fri Mar 23, 2018 11:41 pm
Forum: hardware
Topic: Questions about BBC B memory fault
Replies: 18
Views: 1036

Re: Questions about BBC B memory fault

I think we suffer from the same OCD traits. ;-) I didn't notice they were missing until I posted the photo. Rest assured, it's corrected now... memory-error-2.jpg Much better! :D Making an SSD also sounds like a great idea. Like you say, it's getting a bit long to type in. I managed to miss those br...
by Bagpuss
Fri Mar 23, 2018 11:26 pm
Forum: hardware
Topic: Questions about BBC B memory fault
Replies: 18
Views: 1036

Re: Questions about BBC B memory fault

Managed to attach the chip to an IC socket, and lo and behold...
memory-error.jpg
by Bagpuss
Fri Mar 23, 2018 10:34 pm
Forum: hardware
Topic: Questions about BBC B memory fault
Replies: 18
Views: 1036

Re: Questions about BBC B memory fault

Now I need you to put your faulty IC63 back in and confirm that my modified program does correctly point the finger at that chip.... [-X [-( :roll: :lol: Thanks Martin. You're absolutely right. Using &3FFF makes the test work just fine. :) I'll see what I can do with regards to the faulty RAM chip....
by Bagpuss
Fri Mar 23, 2018 10:11 pm
Forum: hardware
Topic: Questions about BBC B memory fault
Replies: 18
Views: 1036

Re: Questions about BBC B memory fault

Just given it a try.
Didn't expect it to give a different result, as the main test code is the same.
Sure enough, all passes.

I'm really puzzled by the failure of Mark's other test. Doesn't seem to make much sense.
by Bagpuss
Fri Mar 23, 2018 9:50 pm
Forum: hardware
Topic: Questions about BBC B memory fault
Replies: 18
Views: 1036

Re: Questions about BBC B memory fault

Thanks Martin. :D
Going to give it a try right now.

Still, wish I knew what was going on with Mark's other test program.
by Bagpuss
Fri Mar 23, 2018 9:28 pm
Forum: hardware
Topic: Questions about BBC B memory fault
Replies: 18
Views: 1036

Re: Questions about BBC B memory fault

Thanks for the replies. Much appreciated. I've now changed out IC63, and the machine boots up okay with both banks enabled. When I run the tests, I now see some different behaviour. The second test program from Mark and MartinB's run fine. Martin's goes through all of RAM and reports OK. Mark's simp...
by Bagpuss
Fri Mar 23, 2018 6:34 pm
Forum: hardware
Topic: Questions about BBC B memory fault
Replies: 18
Views: 1036

Questions about BBC B memory fault

Hi All, I've been trying to get some of my defunct BBC B's up and running recently. Both machines just give a long tone on power on. Went through the usual steps of recapping the PSU first, followed by swapping out various chips from a known working machine. e.g. CPU, 6522s etc. No joy on either of ...
by Bagpuss
Wed Mar 21, 2018 7:02 pm
Forum: for sale / freebies
Topic: BeebSCSI mini
Replies: 168
Views: 19076

Re: BeebSCSI mini

Coeus wrote:How is batch 3 doing? Has anyone received one yet?
I was wondering the same thing. Been really busy with work, and it only just occurred to me that it hadn't arrived yet.
by Bagpuss
Fri Feb 02, 2018 12:33 pm
Forum: for sale / freebies
Topic: BeebSCSI mini
Replies: 168
Views: 19076

Re: BeebSCSI mini

I'd be interested in another board when a new batch is produced.
Should have ordered two when I had the chance first time around.
by Bagpuss
Tue Dec 12, 2017 2:41 pm
Forum: for sale / freebies
Topic: BeebSCSI mini
Replies: 168
Views: 19076

Re: BeebSCSI mini

Mine also arrived today. Big thanks to Simon and Jason.
I won't be able to play with it until Christmas as I'm away for work from today.
The combo of Matchbox CoPro and BeebSCSI should make for a very nice Model B. :)
by Bagpuss
Tue Dec 12, 2017 9:06 am
Forum: hardware
Topic: Weirdness with BEEB.MMB and games menu
Replies: 3
Views: 405

Re: Weirdness with BEEB.MMB and games menu

Hi Dave, You're absolutely right. I do have ADT installed. What's weird is that it's been installed all the time, and I've never seen this behaviour before. I really can't explain it, as you'd think that the *MENU would always have been handled by ADT. Oh well. Problem explained and solved. :D Thank...
by Bagpuss
Mon Dec 11, 2017 7:45 pm
Forum: hardware
Topic: Weirdness with BEEB.MMB and games menu
Replies: 3
Views: 405

Weirdness with BEEB.MMB and games menu

Hi All, Having a very frustrating day. I've got a home built MMC interface and also one of sirmorris's interfaces. They both work fine in my Master using the BEEB.MMB games menu system. I'm running them with MMFS 1.27 currently (as that's what I had lying around in EPROM). In the past, I've used thi...
by Bagpuss
Mon Dec 11, 2017 12:46 pm
Forum: hardware
Topic: Microvitec Cub with collapsed vertical display
Replies: 0
Views: 345

Microvitec Cub with collapsed vertical display

Hi All, I've just dug my Cub out of hibernation, and it has a bit of a problem. The display has collapsed into a single horizontal line across the middle of the screen. Looks like vertical scan has gone AWOL. It's a model 1441 MS4 according to the sticker on the back. Was just wondering if anyone ha...
by Bagpuss
Thu Dec 07, 2017 10:51 am
Forum: hardware
Topic: Unusual mask ROM in Master 128
Replies: 8
Views: 893

Re: Unusual mask ROM in Master 128

I've traced it out, and the results are as follows: 74LS04 MOSROM Socket 1 (Input 1) NC 27 (A14) 2 (Output 1) 27 (A14) NC 5 (Input 3) NC 22 (/OE) 6 (Output 3) 22 (/OE) NC 7 (GND) 14 (GND) 14 (GND) 13 (Input 6) NC 1 (Vpp) 12 (Output 6) 1 (Vpp) NC 14 (Vcc) 28 (Vcc) 28 (Vcc) All the other pins on the c...
by Bagpuss
Thu Dec 07, 2017 7:29 am
Forum: hardware
Topic: Unusual mask ROM in Master 128
Replies: 8
Views: 893

Re: Unusual mask ROM in Master 128

But... by my understanding ~CS is tied permanently low on the MOS ROM in the BBC Master, i.e. it's always enabled. If early chips got that wrong, why the need for the logic chip? Would it not have sufficed for the carrier to tie CS to +5V? Hmmm, you're right. Any chance Andy could trace the connect...
by Bagpuss
Wed Dec 06, 2017 10:43 pm
Forum: hardware
Topic: Unusual mask ROM in Master 128
Replies: 8
Views: 893

Unusual mask ROM in Master 128

Hi All, Just wondering if anyone has seen one of these mask ROMs before? It's marked as 547MV V9482 231024-1028 0201,843-0 (c) ACORN It's on a small daughterboard and has a 74LS04 on the underside. I've only found one reference in my Googling, which is here: http://mdfs.net/Docs/Comp/BBC/Resources/M...
by Bagpuss
Mon Oct 16, 2017 12:23 pm
Forum: wanted
Topic: Wanted: BeebSID PCB/kit
Replies: 0
Views: 528

Wanted: BeebSID PCB/kit

Hi All.

Sadly, I missed a PM from Phill offering me a BeebSID PCB earlier in the year, so am on the lookout for a PCB or kit.
I've got the SID chip, so that part isn't a problem.

Please drop me a PM if you can help.

Thanks,

Andy.
by Bagpuss
Thu Jun 23, 2016 10:43 pm
Forum: past events & exhibitions
Topic: ABug South - at Centre for Computing History, Cambridge August 26-28 2016
Replies: 258
Views: 31725

Re: ABug South - at Centre for Computing History, Cambridge August 26-28 2016

Hi Jason, I'd like to attend from Friday through Sunday. I'm not currently sure if I'll be bringing kit, as it will depend on whether I've got to be in Edinburgh on Monday for work. If I do, then I'll likely be flying up, and then flying back to Newquay. Will confirm as soon as I know for sure. Than...
by Bagpuss
Fri Jun 17, 2016 11:12 pm
Forum: software: new games
Topic: A new version of Phoenix for the BBC
Replies: 91
Views: 18390

Re: A new version of Phoenix for the BBC

Thanks for your continued work on this. You seem to be picking on some of my favourite 80's arcade games. First Astro Blaster and now Phoenix. How about doing Pleiades next? That'll cover my top 3 raster based games from the early 80's. :D :D