Search found 2110 matches

by jms2
Thu Jan 17, 2019 7:01 am
Forum: software: new games
Topic: Moon Patrol for the beeb (New port, just starting)
Replies: 10
Views: 546

Re: Moon Patrol for the beeb (New port, just starting)

That suspension is mesmerising....
by jms2
Tue Jan 15, 2019 8:10 am
Forum: hardware
Topic: New ROM / RAM Expansion Board for BBC B
Replies: 20
Views: 367

Re: New ROM / RAM Expansion Board for BBC B

Wow, that's quite an achievement Ken - well done!

I already have a B with a (not quite as good) shadow ram and rom board, and a Master, so I'm not interested in buying a pcb. But I'm certainly interested to hear about the details of your project and I'm sure others will be as well.
by jms2
Sun Jan 13, 2019 12:54 am
Forum: hardware
Topic: AP6 ROM update issues
Replies: 40
Views: 678

Re: AP6 ROM update issues

That's an interesting discovery. I suppose it makes sense in the Electron context, where physically moving Basic around is tricky due to it being on the same chip as the OS and effectively hard wired into slots 10 and 11. Maybe the objective was to avoid any risk of confusion caused by the machine s...
by jms2
Sat Jan 12, 2019 10:57 pm
Forum: acorn atom and system
Topic: Atom Colour Board Thread
Replies: 209
Views: 30152

Re: Atom Colour Board Thread

Nice... I can see why you're so pleased with the new design. =D>
by jms2
Sat Jan 12, 2019 10:55 pm
Forum: hardware
Topic: AP6 ROM update issues
Replies: 40
Views: 678

Re: AP6 ROM update issues

All sorted now and working perfectly once I unplugged the rom before programming it. All the anomalies described above have disappeared. Thanks!
by jms2
Sat Jan 12, 2019 9:15 pm
Forum: acorn atom and system
Topic: Atom Colour Board Thread
Replies: 209
Views: 30152

Re: Atom Colour Board Thread

OK, I'll try that. I've been trying to follow the details of the v5.4 board to understand how it improves on previous versions, but I must admit the details eluded me! In a nutshell, is the main benefit improved ease of manufacture, or does it do other things such as give more faithful colours? I'm ...
by jms2
Sat Jan 12, 2019 9:06 pm
Forum: hardware
Topic: AP6 ROM update issues
Replies: 40
Views: 678

Re: AP6 ROM update issues

The v1.31 ROMs are 1.31/1.31a all the way through. Dunno how you've got a 1.30a+1.31 ROM.) I see what you mean - I have just looked through the file I downloaded (on the PC) and its 1.31 throughout. I can only assume, therefore, that the EELOAD process was only partly successful and has written an ...
by jms2
Sat Jan 12, 2019 7:12 pm
Forum: acorn atom and system
Topic: Atom Colour Board Thread
Replies: 209
Views: 30152

Re: Atom Colour Board Thread

Phill,

I know you were never able to reproduce the screen rolling instability problem with version 5.1, but is there reason to believe that the new version 5.4 might perform better in that regard?

John
by jms2
Sat Jan 12, 2019 7:09 pm
Forum: hardware
Topic: AP6 ROM update issues
Replies: 40
Views: 678

Re: AP6 ROM update issues

I have at last got round to updating mine to v1.31. The actual process worked fine, I didn't have any issues with EELOAD. Now *HELP and *ROMS report version 1.31. However there are a couple of things that I've noticed which I think are not exactly bugs as such, but worthy of comment: 1) Whilst *HELP...
by jms2
Sun Jan 06, 2019 11:33 pm
Forum: software: other
Topic: WE Wapping Editor Discs
Replies: 20
Views: 1659

Re: WE Wapping Editor Discs

I checked my rom earlier today, but its 1.30... sorry!
by jms2
Sat Jan 05, 2019 8:13 pm
Forum: software: other
Topic: Graphics Extension ROM based Game - experimenting
Replies: 28
Views: 2231

Re: Graphics Extension ROM based Game - experimenting

That's excellent, well done! Looks superb.

Just a thought - if all the plotting is being done via OS-legal methods, does this also work across the Tube?
by jms2
Sat Jan 05, 2019 8:10 pm
Forum: hardware
Topic: PiTubeDirect on an Electron
Replies: 13
Views: 592

Re: PiTubeDirect on an Electron

Haven't got the Tube version of Elite to load yet. It throws an error. That's not a surprise to me... it is definitely BBC only. The "normal" version of Elite works happily with the Tube turned on. That is a bit of a surprise. It must do something specific to avoid using the second processor. Most ...
by jms2
Sat Jan 05, 2019 3:12 pm
Forum: hardware
Topic: AP6 curious behaviour
Replies: 25
Views: 1017

Re: AP6 curious behaviour

If you wanted to add hard drive support you'd have to pick something to remove so that it would fit. The ADFS ROM is full Full FULL!!!! I know... you’ve said as much earlier on in this thread. What I’m talking about is the version which spans across two roms and contains all the utilities. I’d expe...
by jms2
Fri Jan 04, 2019 10:25 pm
Forum: hardware
Topic: AP6 curious behaviour
Replies: 25
Views: 1017

Re: AP6 curious behaviour

Now I see that with the AP5 configured in mode 3 for the RAM\ROM slots, you can have ADFS with Hard disk support (I have a BeebSCSI) with page at E00. Has anyone tried this other than Dave EJ H? How is the software compatibility? Hi Richard, I must admit that I don't entirely understand the feature...
by jms2
Fri Jan 04, 2019 10:15 pm
Forum: hardware
Topic: PiTubeDirect on an Electron
Replies: 13
Views: 592

Re: PiTubeDirect on an Electron

Are you saying that Tube Elite works on the Electron? :shock: Surely not.... Also Planetoid won't work with the Tube switched on.

I think you must be playing the normal version of Elite with the tube switched off. In this case it will work fine, but there won't be any speed up unfortunately.
by jms2
Sun Dec 30, 2018 7:15 pm
Forum: hardware
Topic: Updated Electron Service Manual
Replies: 0
Views: 111

Updated Electron Service Manual

There was a discussion on here recently about differences between Electron motherboard revisions, and the existence of Issue 4 and Issue 6 schematics. I thought it might be a good idea to include both schematics in the updated Advanced User Guide, but I decided against doing so - the AUG is about pr...
by jms2
Sun Dec 30, 2018 9:00 am
Forum: development tools
Topic: Looking for a 6502 disassembler for reverse engineering
Replies: 11
Views: 327

Re: Looking for a 6502 disassembler for reverse engineering

Jonathan, the MkSrc.txt file on that page is a dead link - which is a pity because I'd be interested to try out mksrc65. I've never found any program which allows you to interactively disassemble 6502 code such that you end up with usable source code, but it looks like this might do it.
by jms2
Thu Dec 20, 2018 7:58 am
Forum: hardware
Topic: Strange Pegasus DFS fault
Replies: 39
Views: 841

Re: Strange Pegasus DFS fault

As I've got Dave's paypal info and he's got my address, I'll go down that route. But thanks for the offer Colin.
by jms2
Wed Dec 19, 2018 8:50 pm
Forum: general
Topic: Beeb Spotting
Replies: 49
Views: 4367

Re: Beeb Spotting

I've just been reading David Mitchell's autobiography "Back Story", in which he makes a passing reference to having a BBC Micro as a child and that his Dad bought him a disc drive that wasn't compatible with all the normal ones. Probably an Opus one I'd imagine!
by jms2
Wed Dec 19, 2018 3:47 pm
Forum: hardware
Topic: Strange Pegasus DFS fault
Replies: 39
Views: 841

Re: Strange Pegasus DFS fault

I think I've got to the bottom of this now. The static ram chip seems to be dead. I was able to load roms into the BBC's sideways ram, which on the 12-rom board comprises 2x 6264 chips. If I swap the one which represents &8000-&9FFF with the ram from the Pegasus board, the Pegasus works again, where...
by jms2
Mon Dec 17, 2018 12:32 pm
Forum: hardware
Topic: Strange Pegasus DFS fault
Replies: 39
Views: 841

Re: Strange Pegasus DFS fault

I am making slow but measurable progress on this. Firstly I think I have sorted out the problem with the Willem programmer. They are quite flaky units, and I remember reading somewhere that you have to power up and load the software BEFORE putting an eprom in to be programmed. In this case I had bee...
by jms2
Fri Dec 14, 2018 5:23 pm
Forum: hardware
Topic: Strange Pegasus DFS fault
Replies: 39
Views: 841

Re: Strange Pegasus DFS fault

It isn't recognised by the EUP board. However I'm not certain I have got the jumpers set correctly... normally there is a 32k eprom in it, which works, but according to the manual I have JP3 set to 16k eprom/32k ram mode. Either way I am not convinced that it is possible to simply drop in an 8k chip...
by jms2
Fri Dec 14, 2018 11:52 am
Forum: hardware
Topic: Strange Pegasus DFS fault
Replies: 39
Views: 841

Re: Strange Pegasus DFS fault

I thought maybe that might be the case - it was just the first thing that came to hand. I have an ABR somewhere as well, and an EUP board so I’ll try those.
by jms2
Fri Dec 14, 2018 6:55 am
Forum: hardware
Topic: Strange Pegasus DFS fault
Replies: 39
Views: 841

Re: Strange Pegasus DFS fault

Yes. I have also checked out all the rom and ram control lines, and not found any issues. I'll check the ram next. EDIT: Just tried putting the ram into a Care Electronics cartridge, to see if it is recognised by the AP6 *ROMS command. It wasn't. I know its only an 8k ram, but it should still be rec...
by jms2
Thu Dec 13, 2018 11:19 pm
Forum: software
Topic: Nevryon
Replies: 6
Views: 271

Re: Nevryon

What's in the lines prior to line 70? Can you LIST them?
by jms2
Thu Dec 13, 2018 11:16 pm
Forum: hardware
Topic: Strange Pegasus DFS fault
Replies: 39
Views: 841

Re: Strange Pegasus DFS fault

Good thought about the programmer Mark, but as Dave H has kindly supplied me with a Pegasus rom its not something I need to look at straight away. With the new rom in, the interface is now recognised once again. But it still doesn't catalogue DFS disks properly... at least not the one I tried anyway...
by jms2
Wed Dec 12, 2018 10:21 am
Forum: hardware
Topic: Model, specification, and upgrades identification
Replies: 7
Views: 295

Re: Model, specification, and upgrades identification

That's a great summary. The only thing I can think to add is in relation to the startup banner - I'm fairly sure that the B+ machines report "Acorn OS 64k" and "Acorn OS 128k". That's "OS" as opposed to "MOS" on the Master.
by jms2
Mon Dec 10, 2018 10:18 pm
Forum: hardware
Topic: Strange Pegasus DFS fault
Replies: 39
Views: 841

Re: Strange Pegasus DFS fault

They can also be destroyed if inserted the wrong way round and then power is applied... :lol: I appreciate your diplomacy skills in not assuming that I actually did just that! I don't think I did... but I suppose it is the most likely explanation. So it is worthwhile reprogramming it if the corrupt...
by jms2
Sun Dec 09, 2018 10:42 pm
Forum: hardware
Topic: Strange Pegasus DFS fault
Replies: 39
Views: 841

Re: Strange Pegasus DFS fault

I found what seemed to be a dry joint on the /OE pin of the DFS rom, and fixed it. But this didn't solve the problem, so maybe I just wasn't firm enough pressing the multimeter probe onto the joint. But I then realised I could move the DFS rom to the spare socket. It still didn't show up when put th...
by jms2
Sun Dec 09, 2018 10:32 am
Forum: hardware
Topic: Millipede Apex board not working?
Replies: 9
Views: 412

Re: Millipede Apex board not working?

Hello and welcome to Stardot! :D I've been on here for a good few years now and I've never heard of any mention of the Millipede board (I was vaguely aware of it, but it's never been discussed). So I think you'll be fortunate if anyone has test programs etc. But having said that, I know its based on...