Search found 57 matches

by BitSeeker
Thu Oct 25, 2018 1:56 pm
Forum: hardware
Topic: Adapting joysticks for the BBC micro
Replies: 25
Views: 932

Re: Adapting joysticks for the BBC micro

That looks like a nice and neat solution. BTW, in case it is of any help to anyone, here is a simple basic program that I used to test both joystick ports before actually trying various games. Its a modified and enhanced version of a joystick demo program I found online shown on a scanned or photogr...
by BitSeeker
Tue Oct 23, 2018 9:10 pm
Forum: hardware
Topic: Adapting joysticks for the BBC micro
Replies: 25
Views: 932

Re: Adapting joysticks for the BBC micro

Yes, I can see how that might possibly work with the switch in the 3rd position as instead of the switch shorting to ground for however long the switch is closed in whichever direction, the signal will instead be pulsed by the 555, theoretically slowing things down. However, looking at the resistor ...
by BitSeeker
Tue Oct 23, 2018 7:48 pm
Forum: hardware
Topic: Adapting joysticks for the BBC micro
Replies: 25
Views: 932

Re: Adapting joysticks for the BBC micro

I reverse engineered the Competition Pro (circuit attached). A +5v supply is indeed required via pin 7 with pin 8 providing the 'ground' connection. It would seem that the centre position (POS B) is normal operation since the switches for both the axes and fire are connected to common (ground) only....
by BitSeeker
Tue Oct 23, 2018 1:38 pm
Forum: hardware
Topic: Adapting joysticks for the BBC micro
Replies: 25
Views: 932

Re: Adapting joysticks for the BBC micro

It has been a while but I have finally managed to sort out a joystick interface! Unfortunately, due to a mix-up on my part and delay in getting in touch with Bryce, I missed the boat with regards to obtaining an adaptor from the last batch made by Bryce. Faced with the possibility of a bit of a wait...
by BitSeeker
Thu Oct 04, 2018 1:32 pm
Forum: general
Topic: Prestel
Replies: 6
Views: 716

Re: Prestel

A rather belated thanks for the links. Indeed it was the content of Micronet 800 I was looking for. I had a bit of nostalgic fun playing with Telstar using the Telstar program that is supplied with RT Russels BBC Basic on Linux. Sadly beyond a few demos and examples, there seems to be no Micronet 80...
by BitSeeker
Sat May 05, 2018 12:29 pm
Forum: hardware
Topic: Sideways RAM on the BBC Micro
Replies: 44
Views: 2352

Re: Sideways RAM on the BBC Micro

Coeus thanks. I have now downloaded the updated version and will have look at it later. Regarding Linux, on occasion its about the tools, but as you say, eventually you end up downloading the majority of what is needed. Its more often about missing libraries or files that are required to compile the...
by BitSeeker
Thu May 03, 2018 8:57 pm
Forum: hardware
Topic: Adapting joysticks for the BBC micro
Replies: 25
Views: 932

Re: Adapting joysticks for the BBC micro

Thanks for the link. That thread was helpful. I see it has just been updated with this Russian reference: http://zxjim.blogspot.co.uk/2012/05/acorn-bbc-atari-joystick-adapter.html I meant to post that here but didnt notice was too very simialr threads active :) I didn't spot the other thread either...
by BitSeeker
Thu May 03, 2018 8:43 pm
Forum: hardware
Topic: Adapting joysticks for the BBC micro
Replies: 25
Views: 932

Re: Adapting joysticks for the BBC micro

Thanks for the link. That thread was helpful. I see it has just been updated with this Russian reference to a schematic: http://zxjim.blogspot.co.uk/2012/05/acorn-bbc-atari-joystick-adapter.html A quick skim through these is looking helpful as well: http://www.drobe.co.uk/archives//www.docm.mmu.ac.u...
by BitSeeker
Thu May 03, 2018 3:59 pm
Forum: hardware
Topic: Adapting joysticks for the BBC micro
Replies: 25
Views: 932

Re: Adapting joysticks for the BBC micro

Are you wanting to permanently modify your "digital" joysticks so that they work on a BBC Micro analogue port? Or are you after a design for an adaptor? The adaptor plugs into the analogue port, then one or two "digital" joysticks (to the Atari 9 pin 'standard') plug into the adaptor. Mark Well if ...
by BitSeeker
Thu May 03, 2018 3:52 pm
Forum: hardware
Topic: Adapting joysticks for the BBC micro
Replies: 25
Views: 932

Re: Adapting joysticks for the BBC micro

Well if there is a schematic for an adaptor then I would be interested. ideally this would have 2xDB9 to Gameport, but if only one is possible then this would be fine as well.
by BitSeeker
Thu May 03, 2018 3:28 pm
Forum: hardware
Topic: Adapting joysticks for the BBC micro
Replies: 25
Views: 932

Adapting joysticks for the BBC micro

I have here a couple of 'vintage' Competition Pro joysticks which I had hoped to use with the BBC Micro. The joysticks have a DB9 plug, whereas the BBC gameport is DB15. I have found some online documentation about the pinout of both the DB9 and DB15 plugs, but although the DB9 has 4 pins assigned t...
by BitSeeker
Sat Apr 28, 2018 9:15 am
Forum: hardware
Topic: Sideways RAM on the BBC Micro
Replies: 44
Views: 2352

Re: Sideways RAM on the BBC Micro

Sorry about the delayed response, but thanks for these pointers. I was not aware of the 8bs site so thanks for pointing that out. I have added it to my retro sites bookmarks. I now have a modern memory expansion board which came with the EXMON rom installed so I will be exploring this in due course....
by BitSeeker
Wed Apr 25, 2018 4:15 pm
Forum: general
Topic: Buying software on 'vintage' floppy diskettes
Replies: 12
Views: 1048

Re: Buying software on 'vintage' floppy diskettes

Nah! I wasn't really interested in buying, its just I don't think I have seen one for quite that much before and the name of this forum was mentioned to lend credence to the cause. I was intrigued by the program itself and wondered what had been previously said about it. Thanks to those who have pos...
by BitSeeker
Tue Apr 24, 2018 11:23 am
Forum: general
Topic: Buying software on 'vintage' floppy diskettes
Replies: 12
Views: 1048

Buying software on 'vintage' floppy diskettes

I'm not sure whether links to eBay items are allowed so moderators, please moderate as appropriate. However since the seller mentions that he has asked on 'Stardot' and I cannot find a thread about this, I thought I would ask. If there is a previous thread somewhere then please feel free to point it...
by BitSeeker
Thu Apr 19, 2018 4:38 pm
Forum: software: other
Topic: How t pass arrays into procedures?
Replies: 14
Views: 1032

Re: How t pass arrays into procedures?

Hi Bitseeker If you don’t have a user guide I have a spare one you can have for p&p. Just let me know if you are interested. Lardo Thank you for the kind offer. I do have the PDF version on the iPad although sometimes I wish I had the paper version as it is so much easier to turn over pages! A% var...
by BitSeeker
Wed Apr 18, 2018 12:01 am
Forum: software: other
Topic: How t pass arrays into procedures?
Replies: 14
Views: 1032

Re: How t pass arrays into procedures?

Thanks for reminding me about that. Someone did mention it before and I had already forgotten! It does actually make sense because when I type say P. on the Beeb or emulator in a BASIC program this does get automatically expended to PRINT when I list the program. Tokenizing makes sense when you have...
by BitSeeker
Tue Apr 17, 2018 11:10 pm
Forum: software: other
Topic: How t pass arrays into procedures?
Replies: 14
Views: 1032

Re: How t pass arrays into procedures?

Are you typing the BASIC program in with the PAGE at &1900? If it's the final program, ie. no more will need to be loaded afterwards, tape could be enabled and the PAGE dropped to &E00. If under emulation, might be worth developing on the BBC Master initially to keep PAGE low? Although it's only a ...
by BitSeeker
Tue Apr 17, 2018 12:30 pm
Forum: software: other
Topic: How t pass arrays into procedures?
Replies: 14
Views: 1032

Re: How t pass arrays into procedures?

I think the problem was an ovelap between variable names (e.g. I% in FOR ..NEXT loops) inside the procedure and global variables. I have decided to use capitals for global variables and small letters for those inside procedures , that way there is no overlap and so far no errors. Since I added anoth...
by BitSeeker
Mon Apr 16, 2018 4:11 pm
Forum: software: other
Topic: How t pass arrays into procedures?
Replies: 14
Views: 1032

Re: How t pass arrays into procedures?

Hmmm.. just tried that on mine, both emulator and actual Beeb and it worked OK as well. I also tried with a string-var and a num-var with a similar result so they can be 'seen' by the PROC as well. Thanks for the reference to PROC - I didn't think to look there. It does clearly say string-var or num...
by BitSeeker
Mon Apr 16, 2018 11:23 am
Forum: software: other
Topic: How t pass arrays into procedures?
Replies: 14
Views: 1032

How t pass arrays into procedures?

This may be a simple question and forgive me if it has been asked before, but I couldn't find an answer - at least not for native Acorn BASIC. I have noticed while programming on the BBC Micro that Acorn BASIC will recognize globally declared array variables (e.g. scores%(10)) inside a "first level"...
by BitSeeker
Sun Apr 15, 2018 4:47 pm
Forum: hardware
Topic: Sideways RAM on the BBC Micro
Replies: 44
Views: 2352

Re: Sideways RAM on the BBC Micro

After some considerable thought over a few days, in the end I purchased the 16-slot ROM/RAM board from Steve Picton. It arrived within a couple of days and a was installed another two days later. The installation went smoothly and after a few minutes I had an upgraded Beeb. I had a little more time ...
by BitSeeker
Fri Apr 13, 2018 9:02 pm
Forum: emulators
Topic: Which Emulator for BBC Micro on Linux?
Replies: 37
Views: 2108

Re: Which Emulator for BBC Micro on Linux?

There is no error message. It just stops short. One has to press Return to exit anyway, which goes back to the prompt from where it is possible to type and do a RUN.
by BitSeeker
Fri Apr 13, 2018 3:51 pm
Forum: emulators
Topic: Which Emulator for BBC Micro on Linux?
Replies: 37
Views: 2108

Re: Which Emulator for BBC Micro on Linux?

I've been working on a BASIC program as a refresher and to put into practice the things learned. The program is now approaching 140 lines of code and I am finding that using *EXEC to load from a text file no longer imports all of the lines. I am wondering whether this is down to memory? I am getting...
by BitSeeker
Thu Apr 12, 2018 9:41 am
Forum: emulators
Topic: Which Emulator for BBC Micro on Linux?
Replies: 37
Views: 2108

Re: Which Emulator for BBC Micro on Linux?

Thanks. I have bookmarked that for reference and will have a more detailed look at it later.
by BitSeeker
Thu Apr 12, 2018 8:56 am
Forum: emulators
Topic: Which Emulator for BBC Micro on Linux?
Replies: 37
Views: 2108

Re: Which Emulator for BBC Micro on Linux?

...The first is added spaces: the output of COPY is indented and spaces are added at the beginning of each line. These should not cause an issue as BASIC does not store any spaces before the line number, Conversely, editors such as BBC BASIC also automatically insert spaces between line number and ...
by BitSeeker
Thu Apr 12, 2018 8:24 am
Forum: emulators
Topic: Which Emulator for BBC Micro on Linux?
Replies: 37
Views: 2108

Re: Which Emulator for BBC Micro on Linux?

For those who know what Linux Containers are I have been playing around and put Tom's Linux version of B2 into a container. The build file sucks the source, installs the dependancies, builds it and pushes the binary to another container. Will run on windows, mac or linux x86 currently (tested again...
by BitSeeker
Wed Apr 11, 2018 6:56 pm
Forum: emulators
Topic: Which Emulator for BBC Micro on Linux?
Replies: 37
Views: 2108

Re: Which Emulator for BBC Micro on Linux?

Well I finally was able to compile BeebEm for Linux but as the version number indicates, this appears to be at a very early development stage. It loads up with the emulator window and the status of ROMs is listed in the command window at startup , but there are no menu options in the GUI. There do a...
by BitSeeker
Wed Apr 11, 2018 11:32 am
Forum: emulators
Topic: Which Emulator for BBC Micro on Linux?
Replies: 37
Views: 2108

Re: Which Emulator for BBC Micro on Linux?

I'm using Linux MINT version 18.2 with Cinamon desktop. I was not aware of what Wayland is, but doing a quick search I find that wayland libraries are installed on my system (mostly version 1.12.0-1 but version 17.2.8-0 of the egl1-mesa library). I had a look at the referenced thread. The MMBImager ...
by BitSeeker
Tue Apr 10, 2018 10:04 pm
Forum: emulators
Topic: Which Emulator for BBC Micro on Linux?
Replies: 37
Views: 2108

Re: Which Emulator for BBC Micro on Linux?

Just to add to this topic of Linux tools, I have found that running the MMC Manager tool and FSImager on Linux in WINE has one serious limitation. Drag and drop does not work. Both of these tools are drag and drop dependent and do not seem to provide an alternative option to save out or copy into/fr...
by BitSeeker
Sat Apr 07, 2018 12:43 pm
Forum: hardware
Topic: BBC Micro cut-out space on left hand side of keyboard
Replies: 11
Views: 768

Re: BBC Micro cut-out space on left hand side of keyboard

I wasn't aware of the Acorn Speech System. I just did a search on it. I see two chips were involved, Texas Instruments TMS5220 and TMS6100. There seems to be an upgrade kit available online at Sprow's web pages, and one or two individual ICs on eBay but quite pricey. Photos show these chips both on ...