Search found 230 matches

by ctr
Sat Mar 25, 2017 8:51 pm
Forum: 8-bit acorn emulators
Topic: Beebem on Github
Replies: 133
Views: 15015

Re: Beebem on Github

chrisn wrote:I added this to the open pull request.
Thank you! Video capture doesn't work on Windows 10, and possibly Windows 8. I've done a fix that I'll submit as soon as pstnotpd's changes are merged in. If you're about to do a release, please hold fire for a moment.
by ctr
Sat Mar 25, 2017 6:45 pm
Forum: 8-bit acorn emulators
Topic: Beebem on Github
Replies: 133
Views: 15015

Re: Beebem on Github

It builds for me. I haven't tested it exhaustively but Firetrack ran. And I just realised I didn't have to configure the DirectX directory, which is nice. This means to run BeebEm under the debugger you'll need to copy some files into the Debug directory: zlib1.dll, Teletext.fnt, and all the .snd fi...
by ctr
Sun Mar 19, 2017 11:52 pm
Forum: 8-bit acorn emulators
Topic: Beebem on Github
Replies: 133
Views: 15015

Re: Beebem on Github

chrisn wrote:I have merged a few changes from a GitHub contributor
I'm sometimes here too. I've got a daft username there (mungre) because my name was long since taken. Though I've just realised that was me six years ago :-)
by ctr
Wed Mar 15, 2017 3:57 pm
Forum: 8-bit acorn emulators
Topic: B-Em Debugging/Tracing
Replies: 64
Views: 5947

Re: B-Em Debugging/Tracing

is there a way to describe paged access that doesn't become dependent on the particular CPU in question? I was thinking about this a couple of weeks ago while trying to understand the B+ and Master memory architectures. The architecture is usually described in terms of the various bits of RAM (HAZE...
by ctr
Sun Feb 26, 2017 5:45 pm
Forum: 8-bit acorn hardware
Topic: Beeb FPGA
Replies: 513
Views: 49871

Re: Beeb FPGA

squid wrote:Problem is whenever I press SHIFT or CONTROL keys these games just pause.
SHIFT and CTRL are the only two keys on the BBC keyboard that don't generate an interrupt. It's possible the FPGA isn't simulating this correctly, but I really don't know.
by ctr
Fri Feb 24, 2017 8:02 pm
Forum: 8-bit acorn emulators
Topic: B-Em
Replies: 498
Views: 43591

Re: B-Em

Apart from file selection, none of the UI needs to be native. Instead of targeting Windows or Linux, why not make it BBC Micro style? One could go the whole hog and give the emulator the ability to run more than one beeb at a time. The configuration UI could then be an actual beeb program communicat...
by ctr
Mon Feb 20, 2017 8:27 pm
Forum: miscellaneous new bbc and electron games
Topic: Yet another Tetris
Replies: 11
Views: 3171

Re: Yet another Tetris

Great to see another game for the Beeb! The fix you did for the drop is great but could you do the same for the rotate key as under BeebEm your tile spins around mega fast if you keep your finger on the key. Cheers. I always regarded the rotation as harmless, but if it's giving people trouble I'm h...
by ctr
Sun Feb 19, 2017 6:23 pm
Forum: miscellaneous new bbc and electron games
Topic: Yet another Tetris
Replies: 11
Views: 3171

Re: Yet another Tetris

Just had a play - it's really good, well done! =D> 8) Have to report though that I did have about three ' double drops ' in the game below... Thank you! I'm nearly certain that running on a real beeb a second piece won't drop unless the drop key is still physically pressed. I think the problem is p...
by ctr
Fri Feb 17, 2017 7:09 pm
Forum: 8-bit acorn emulators
Topic: Beebem on Github
Replies: 133
Views: 15015

Re: Beebem on Github

I compiled beebem414.zip on Windows 10 a couple of days ago using VS2010 Express. I already had VS2010 Express installed. I downloaded and installed DXSDK_Jun10.exe from here: https://www.microsoft.com/en-us/download/details.aspx?id=6812 This gave an error fairly late in the installation. I ignored ...
by ctr
Fri Feb 17, 2017 6:46 pm
Forum: miscellaneous new bbc and electron games
Topic: Yet another Tetris
Replies: 11
Views: 3171

Re: Yet another Tetris

It's really great. Thanks! Thank you! Development has become a joy again now that tools like beebasm are available, I love being able to throw code together using modern tools, compile, boot beebem and try it out immediately This is so true. I can hit F5 in notepad++ and in less than two seconds th...
by ctr
Wed Feb 15, 2017 4:57 pm
Forum: miscellaneous new bbc and electron games
Topic: Yet another Tetris
Replies: 11
Views: 3171

Re: Yet another Tetris

Are you tapping or holding the drop key? You only need to tap it once. If you hold it for the duration of the drop it is quite hard to time the release to avoid a second drop. I hadn't planned to do any further work on it but I did want to have a look at the code. Doing that on the BBC was painful s...
by ctr
Mon Feb 13, 2017 12:46 pm
Forum: miscellaneous new bbc and electron games
Topic: Yet another Tetris
Replies: 11
Views: 3171

Re: Yet another Tetris

Cheers, I'm glad you liked it. It is infuriating, I wasted most of Sunday trying to get a good score. I seem to recall young me being much better at it. :-)
by ctr
Sun Feb 12, 2017 5:26 pm
Forum: miscellaneous new bbc and electron games
Topic: Yet another Tetris
Replies: 11
Views: 3171

Yet another Tetris

A couple of threads about Tetris reminded me that I wrote one for the BBC Model B many years ago. Screenshots and ssd are attached. My impressions after more than a quarter of a century: Pros * Responsive * Smooth animation of falling pieces * Fast loading * Patterns on blocks rotate with blocks * K...
by ctr
Sun Oct 05, 2014 12:29 am
Forum: 8-bit acorn hardware
Topic: Counting sideways RAM banks
Replies: 37
Views: 4500

Re: Counting sideways RAM banks

It works for me! Though I've only tested it on the modelb emulator.

What are you running it on?

EDIT: It does currently assume a hardware configuration where writing &FE30 and &FE32 selects the bank to write to OR bank 15 is permanently writable (or both).
by ctr
Sat Oct 04, 2014 9:09 pm
Forum: 8-bit acorn hardware
Topic: Counting sideways RAM banks
Replies: 37
Views: 4500

Re: Counting sideways RAM banks

I wrote this to distinguish RAM banks. It generates a distinct test value for each bank which is also distinct from any of the existing values at that location. It writes the test values to all banks. If banks overlap then only the last bank written (in the overlapping set) will retain its test valu...
by ctr
Sun Jul 20, 2014 12:46 am
Forum: 8-bit acorn hardware
Topic: Fault finding index
Replies: 109
Views: 55484

Re: Fault finding index

This thread is a bit stale, but this may help someone...

***********

BBC Model B displays "BBC Computer 16K" at boot.

Ensure link S25 is properly connected in the north position.

***********
by ctr
Sun Jul 20, 2014 12:24 am
Forum: introduce yourself
Topic: Birmingham calling
Replies: 8
Views: 1522

Re: Birmingham calling

Cheers. I've posted the stuff on eBay, and I've posted links in the "For sale" forum.

I've been an occasional lurker round the these forums and their predecessors for years. I just never got round to opening an account. I'll certainly be back.
by ctr
Sun Jul 20, 2014 12:07 am
Forum: for sale / freebies
Topic: Beebs, monitor, mouse, printer and stuff
Replies: 0
Views: 758

Beebs, monitor, mouse, printer and stuff

I'm selling a bunch of beeb and other stuff on eBay before I move house. BBC Micro Model B with dual floppy disk drive BBC Micro Model B with Sidewise expansion board Microvitec Cub Monitor for BBC Micro AMX Mouse and Super Art for BBC Micro This printer comes with a BBC printer cable: Canon PW1080A...
by ctr
Sat Jul 19, 2014 11:48 pm
Forum: scanning of books, magazines, ads and letters
Topic: How many sold? German tank problem:serial nums wtd
Replies: 300
Views: 87395

Re: How many sold? German tank problem:serial nums wtd

I've got two Acorn computers, both BBC Model B. The serial number labels read:

AB ELECTRONIC SYSTEMS LTD 182022
KELTEK 08ANB01-3005578
by ctr
Sat Jul 19, 2014 11:42 pm
Forum: introduce yourself
Topic: Birmingham calling
Replies: 8
Views: 1522

Birmingham calling

Hello! I had a BBC Micro as a teenager, which I programmed obsessively. This was followed by an Archimedes A310 and a career in software, mostly on the PC. I'm currently trying to dispose of stuff before moving house. I occasionally have a burst of beeb nostalgia, but this is satisfied by the modelb...

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