Search found 1280 matches

by AndyF
Thu Sep 19, 2019 4:16 am
Forum: hardware
Topic: Hmm.. was there ever an 8" floppy drive for the BBC?
Replies: 39
Views: 1098

Re: Hmm.. was there ever an 8" floppy drive for the BBC?

Could some kind soul please extract the contents of D1000.IMG and D1000B.IMG from http://gtoal.com/bbc/ ? Judging by the text strings I see in the image, that is likely our 8 inch formatter and modified DFS. (I'm not in a position to extract files from a disk image yet) thanks Graham D1000 looks OK...
by AndyF
Tue Sep 03, 2019 12:30 pm
Forum: hardware
Topic: Hmm.. was there ever an 8" floppy drive for the BBC?
Replies: 39
Views: 1098

Re: Hmm.. was there ever an 8" floppy drive for the BBC?

What is the formatted capacity of the 8's please ? When used on a BBC that is. I'm going to assume its limited to 40 tracks, so based on what a 177x (as I don't have an 8271 to hand at the moment and BeebEm is having other ideas) would do its likely limited to 101888 bytes / just under 100Kb. I'm un...
by AndyF
Sat Aug 31, 2019 4:15 pm
Forum: hardware
Topic: Hmm.. was there ever an 8" floppy drive for the BBC?
Replies: 39
Views: 1098

Re: Hmm.. was there ever an 8" floppy drive for the BBC?

I don't recall seeing one 'in use' aside from on old TV (War Games immediately springs to mind here) , I have seen one in the metal a long time ago but that's about it. What would be (to me at least but I'm a bit boring perhaps?) would be to find out how their access times compare to a 5.25 as in ho...
by AndyF
Sat Aug 31, 2019 2:22 pm
Forum: hardware
Topic: Hmm.. was there ever an 8" floppy drive for the BBC?
Replies: 39
Views: 1098

Re: Hmm.. was there ever an 8" floppy drive for the BBC?

The 8271 disc interface will support 8" drives, although as has been said, nobody seems ever to have used one. An additional modification to some links is required after fitting the 8271 upgrade - it's covered in 4.6 of the Service Manual. Without going to look I'd actually always assumed given the...
by AndyF
Thu Aug 29, 2019 7:57 pm
Forum: software: other
Topic: Odd GCOLs & PLOTs
Replies: 7
Views: 307

Re: Odd GCOLs & PLOTs

Undocumented effects are quite nice sometimes but problem is I think you can't rely on them working on say a 'B then having the same effect on the M128 perhaps. A bit like undocumented assembly opcodes in a way! Talking of the GXR Rom, did anyone else notice that it was active or inactive by default...
by AndyF
Sat Aug 17, 2019 10:22 am
Forum: software: classic games
Topic: Using tape relay as sound channel
Replies: 7
Views: 307

Re: Using tape relay as sound channel

I was always worried that a MOTOR on/off without any delay at all would cause it to either overheat thorough movement or possibly (unlikely unless something was connected to the output) arc and eventually jam 'on' I do recall having one 'B' around the mid 90's (ad-mag purchase if I recall correctly,...
by AndyF
Fri Aug 16, 2019 6:23 pm
Forum: archive submissions
Topic: 30th Anniversary BBC and Electron Collection
Replies: 533
Views: 66206

Re: 30th Anniversary BBC and Electron Collection

Thank you as always for the continued hard work and updates, greatly appreciated. :)
by AndyF
Fri Aug 16, 2019 11:04 am
Forum: hardware
Topic: ADFS Upgrade board repair
Replies: 9
Views: 283

Re: ADFS Upgrade board repair

I seem to recall the genuine ones suffered from this 'concern' :(

I remember that some third party ones did not do this as the construction was slightly different. 90% sure the RetroClinic ones are 'safe' but I don't have anything to hand as I write this to check.
by AndyF
Tue Aug 13, 2019 4:33 pm
Forum: hardware
Topic: what's the use of Mode 0
Replies: 24
Views: 922

Re: what's the use of Mode 0

Spreadsheet or similar / database type listing would be my thought on it. :) A tongue-in-cheek comment here would be to say "to annoy people who used RF out with a standard TV" as the ghosting effect/quality was not brilliant in M0, hampered in some cases by slightly iffy and ancient television sets...
by AndyF
Mon Aug 12, 2019 8:59 pm
Forum: software: other
Topic: Help with The Quill
Replies: 4
Views: 317

Re: Help with The Quill

Its a slight shame Illustrator never made it across actually, although it was a tad annoying to use (at least for me, I never really got the hang of it properly) , then you start adding Patch/Press into the equation to do split pics (GAC style) etc it gets rather complicated. Having said that some *...
by AndyF
Mon Aug 12, 2019 8:55 pm
Forum: software: classic games
Topic: Spéech with the Quill and using Star commands Option p in menu
Replies: 21
Views: 709

Re: Spéech with the Quill and using Star commands Option p in menu

Untested (do it on a backup!) try if you can padding the command out with some spaces then edit the file or the disc directly to do a backspace or change the colours. I think it may try to screen out Teletext control codes although I've never really looked into this, it would be possible to stop it ...
by AndyF
Mon Aug 12, 2019 8:52 pm
Forum: programming
Topic: Game creation software?
Replies: 14
Views: 481

Re: Game creation software?

Lets just be slightly thankful that some of the 'creation' tools from B.I.T.D for other platforms never made the hop across to this platform. To be fair some were half decent but a few were really bad (imo) at that time when they were new. :D
by AndyF
Mon Aug 12, 2019 8:51 pm
Forum: software: new games
Topic: LAND - A Multi-User Dungeon (well almost)
Replies: 39
Views: 1567

Re: LAND - A Multi-User Dungeon (well almost)

=D> I concur.

When I tried to (about 5 years back now! *ahem* I really should try to find time to write some as I do enjoy it) do a variant of Cave , I noted some odd Quill bugs, I never documented them as they were not too common. Not going to be a problem for you anyway! :)
by AndyF
Sun Aug 04, 2019 2:36 pm
Forum: emulators
Topic: BeebEm in 16K
Replies: 15
Views: 421

Re: BeebEm in 16K

A list of chips not fitted to a BBC model A is here ;-) Mark Thanks, I see its a recent addition. That is a very useful reference not only for now but for future use. =D> Only thing I see missing is a sidenote perhaps about the PSU being different, as in early models likely to have that linear PSU,...
by AndyF
Sun Aug 04, 2019 11:52 am
Forum: emulators
Topic: BeebEm in 16K
Replies: 15
Views: 421

Re: BeebEm in 16K

tricky wrote:
Sun Aug 04, 2019 11:22 am
Don't know about loading, but saving often saved a "corrupted" version (1 bit error I think) which is why I have my cousing beeb from '83 instead of mine from '82.
With OS 1.2 or 0.1 ? Somehow I suspect the latter but could be wrong. :)
by AndyF
Sun Aug 04, 2019 11:15 am
Forum: emulators
Topic: BeebEm in 16K
Replies: 15
Views: 421

Re: BeebEm in 16K

Thanks. Was aware of the first PSU design, iirc it was something the BBC had requested / in their specs etc at the time, if memory serves ? Somewhere I have some pics of an original "one of the early" model A units, unmodified and you can clearly see that type of PSU! :oops: :mrgreen: Read up a whil...
by AndyF
Sat Aug 03, 2019 10:54 am
Forum: emulators
Topic: BeebEm in 16K
Replies: 15
Views: 421

Re: BeebEm in 16K

Thank you.

Oh I'd not suggest trying to disable them, perhaps network and disc by default should be off if 'A' (or '16K' if you prefer) was chosen as it seems as I say a bit hit/miss as to what people or perhaps even the selling dealer would of added to the bog-standard 'A' model.
by AndyF
Sat Aug 03, 2019 10:38 am
Forum: emulators
Topic: BeebEm in 16K
Replies: 15
Views: 421

Re: BeebEm in 16K

*FX254,64 makes a model B think it's an A. (The value is stored in memory location &28E). I don't think there's any other way to get BeebEm to act like a model A. Thanks. Yes I figured it would likely come down to a bit of trickery such as the above. :) On 'real hardware' I'd probably move that lin...
by AndyF
Fri Aug 02, 2019 7:07 pm
Forum: emulators
Topic: BeebEm in 16K
Replies: 15
Views: 421

Re: BeebEm in 16K

Thanks. :) That's what I mean there's no erm "beebem.ini" or .cfg file I can tweak and the menu machine options as 'primary' machines start with the Model B*** *** I know you could have a 16K 'B in a way! But there is no easy solution to this aside from a "POKE" or suchlike. Hmm. Might have to just ...
by AndyF
Fri Aug 02, 2019 4:31 pm
Forum: emulators
Topic: BeebEm in 16K
Replies: 15
Views: 421

BeebEm in 16K

I wonder if there is a way to make BeebEm run as a 16K 'B (well, 'A' in a way I suppose) ? :) I may of missed the obvious. I am aware B-Em offers a 16K mode however it seems to have a bit of a hard time loading tapes despite me trying *TAPE 3 or *TAPE 12 , does not want to play nice with tapes for s...
by AndyF
Fri Aug 02, 2019 7:24 am
Forum: software: other
Topic: MOS 3,20 and MOS 3.50
Replies: 4
Views: 404

Re: MOS 3,20 and MOS 3.50

ANFS is and was always seperate*, and ANFS 4.25 was the final 8-bit Master version and used on all Master machines with all Master MOSes. *unless you do a custom build . Missed this reply somehow, sorry. :oops: Ah yes, it was in my case just a separate ROM for a couple of machines and years until i...
by AndyF
Thu Aug 01, 2019 11:08 am
Forum: programming
Topic: Game creation software?
Replies: 14
Views: 481

Re: Game creation software?

Having said the above AGD is quite good but I've not got to grips with it yet. Not this one anyway, take a look at the platforms. I can confirm it worked OK for the Amstrad and I almost got the ZX one working but that's an emulation issue. I say worked OK as in I got it fired up via emulation and wa...
by AndyF
Thu Aug 01, 2019 9:37 am
Forum: programming
Topic: Game creation software?
Replies: 14
Views: 481

Re: Game creation software?

If should require any assistance with Quill (I realise probably not as you said arcade games!) please feel free to grab me via a topic and I'll try to assist. Specifically in cases where you're trying to convert an existing game from one platform to another as there are quite a few pitfalls in this....
by AndyF
Tue Jul 30, 2019 1:44 pm
Forum: hardware
Topic: High res picture of area around composite video out
Replies: 19
Views: 469

Re: High res picture of area around composite video out

1024MAK wrote:
Mon Jul 29, 2019 9:37 pm
Who? Me? :shock: 8-[ [-X
Apologies Mark if my post read in any way a bit erm 'off' :oops: :oops: It was intended in good humour/jest rather than anything at all negative. :)
by AndyF
Mon Jul 29, 2019 9:27 pm
Forum: hardware
Topic: High res picture of area around composite video out
Replies: 19
Views: 469

Re: High res picture of area around composite video out

1024MAK wrote:
Mon Jul 29, 2019 9:18 pm
There are definitely issue 2 Master 128 machines with real keyswitch® keyboards. I know, I have a number of them... :D

Mark
You're not suggesting that the membrane based keyboard is inferior are you ;) :D
by AndyF
Mon Jul 29, 2019 8:02 pm
Forum: hardware
Topic: High res picture of area around composite video out
Replies: 19
Views: 469

Re: High res picture of area around composite video out

thanks Andy - I was a little confused myself thought there was just one. Service guide says the caps don’t need fitting on an issue 2. Surprised that the master didn’t come with a link like the later BBC B’s No problem. As I say please don't take my above post as Gospel though! It could well be my ...
by AndyF
Mon Jul 29, 2019 6:41 pm
Forum: hardware
Topic: High res picture of area around composite video out
Replies: 19
Views: 469

Re: High res picture of area around composite video out

Although rumour is there was only one issue Master board? I’m sure others will be able to provide more info. I'd always (assumed) a few Iss2 did appear, and usually they have that membrane type keyboard fitted aka "the silent type" well, squishy and quieter would be more appropriate I guess. My mem...
by AndyF
Tue Jul 23, 2019 7:59 pm
Forum: software: classic games
Topic: Elk Manic Miner?
Replies: 10
Views: 518

Re: Elk Manic Miner?

Can that loop not be just NOP'ed (unsure on the 6502 opcode for this, its NOP in Z80 sorry :oops: ) out ? The game does not by default run very quickly on a real 'B anyway. Unless its a timing critical loop.
by AndyF
Mon Jul 22, 2019 10:21 pm
Forum: for sale / freebies
Topic: Take my money! BNIB BBC Master!
Replies: 14
Views: 969

Re: Take my money! BNIB BBC Master!

I’ve not played with an Acorn membrane yet, so can’t help with specifics in that regard. Mark I *think* its multi-layered a bit like the Amstrad Speccies one, if that makes sense. :) I'm going from vague memory here, a cursory Google did not reveal anything useful although I did not look too hard g...