stardot.org.uk

Does anyone know if the CCH car park is open late, ie up to 11pm or so? I can't leave (South) London until around 8pm so I'll be getting to Cambridge rather late, but I'd really like to unload my stuff on Friday evening (and perhaps risk leaving the car in the car park as well).

You wouldn’t happen to have any of the devices that plug onto Atom motherboards to provide video output? You had a quick look at my two Atoms a few ABUGs back and I made a mental note at the time that I needed to get hold of some! You mean connectors for the composite out (PL4), if so yeah could pr...

No, rescue the poor slowly-corroding Master!

I have one, next time I’m in the vicinity of my collection I’ll dig it out and see what documentation came with it. Is there a list of hardware / software that are considered important historically and haven’t been preserved? I know about the MIA games list but are there equivalent ones for hardware...

Making considerable progress! I will post here with what I had to do to get things working shortly... I'm trying to work it out by looking online but does anyone know which areas of memory (workspace) I might need to preserve when using HostFS / UPURSFS? I am trying to run a demo (Wave Runner) over ...

Thanks Martin. I seem to have got it working! For those who might want to try UPURSFS on MacOS in the future: - The -U option didn't work. I had to use -s. ie: perl ./TubeHost.pl -s /dev/tty.usbserial-FT93UCZ7 115200 - There seems to be a bug on MacOS whereby if you have the FTDI USB->Serial cable p...

Upon further investigation:

Tubehost.pl is hanging on the following line:

system("stty $BAUD crtscts ignbrk ignpar -icrnl -ixon -opost -isig -icanon -iexten -echo < $socket_path");


Would this suggest some kind of driver issue?

perl ./TubeHost.pl -U /dev/tty.usbserial-FT93UCZ7 115200 Try using /dev/cu.usbserial.... instead. Thanks sweh! Sadly it didn't make any difference. I also realised I had an old version of UPURSFS so upgraded to the latest one (0.08) but that didn't help either. Should I see any output at all in the...

Arise necro-thread! Has anyone ever used UPURSFS with MacOS? Did you get it working? I think I have everything set up correctly but I find that I can't actually execute any HostFS commands (or any *commands at all, really) ... the machine just waits forever for the command to complete, but never pri...

With less than a week to go, anything anyone wants me to bring beyond : Normal soldering equipment & tools. Eprom / AVR / PIC / Xilinx programmers. Shuttle PC for reading floppies. Dragon + PSU (for looking at sbadger's Dragon). Normal assortment of Beeb / Atom stuff. Cheers. Phill. You wouldn’t ha...

Actually, does anyone have any spare BBC Master PSUs they might be willing to sell at ABUG? I have two masters missing PSUs. Or rather one is totally missing, and for the other I’m missing the outer metal case but have the PSU board.

If anyone does it would be much appreciated!

Sounds fantastic but I have to save my weekends for precious ABUG meets. If anyone feels like taking pictures of interesting stuff please do so!

Another thread bump! Closing Thoughts section has been done (actually I wrote it a few weeks ago but didn't want to bump the thread until I'd finished a few other things.) The source code is now available on Github: https://github.com/bitshifters/wave-runner Finally, the 'incorrect scrolltext colour...

Just a quick note to say that this sounds really interesting. And I quite like 'Aeris' for the name!

Writing a sequence of values (or just one odd value) to a nonexistent CRTC register?

Just in Twisted Brain, or elsewhere as well? There's a known issue in Twisted Brain where it can show some spurious lines in the 'Twister' section. It depends on what screen mode you were in when you booted the demo. It's also known to have problems with some of the more obscure 6845 CRTC chips foun...

I rescued all the old Risc PCs from ARM ltd. just recently. Got stacks in my room. Only a couple of interesting ones which I will be sure to bring along. My God. Do you have any with uncorroded motherboards?... Yes, I have removed all the batteries...there is one that boots up to a screwed up graph...

riscman wrote: ↑

Wed Aug 14, 2019 9:42 pm

I rescued all the old Risc PCs from ARM ltd. just recently. Got stacks in my room. Only a couple of interesting ones which I will be sure to bring along.

My God. Do you have any with uncorroded motherboards?...

Thread bump! I have updated the Logo Dissolve, Intro/Outro and Vertical Scrolltext write-ups. I will write up some closing thoughts shortly.

Yes, this is fascinating. Thanks!

(I'd love to play that version! A mix of the original Beeb version and the eventual C64 release.)

It's a shame they're moving, I always thought I might take a trip up there one day for the pure nostalgia factor of walking into an 'Acorn' shop!

(I'd inevitably end up buying lots of stuff of course!)

Quick note to clarify (maybe?) the previous post. Although from the CRTC's perspective it's outputting sequential numbers as the raster-beam scans along one scanline, the way the address lines and multiplexer chips work mean that the actual address fetched increases by eight each time the CRTC moves...

Yes, the CRTC simply generates addresses by making some of its output pins high and others low. It does not fetch the values stored at that address, it just creates the number, puts it on the address bus, and it's the responsibility of other parts of the system to fetch the byte stored at the addres...

I don't recall there being a printed map or clue sheet available when I bought it, and I'm pretty positive I bought it when it was first released. Could this have been a re-release?

If you mean the one referenced in the first post in this thread... I was watching it with great interest on Facebook Marketplace. The seller said that he was going to come back a bit later and offer it for sale once he'd decided on a price, but he never did. My assumption was that someone had made h...

I'm sort of interested. I have three RiscPCs and the thought of cannibalising the broken ones to make a franken-RPC has occasionally occured to me... Although I must admit I'm not sure I have enough podules to do it justice!

A link to the demo would be useful. Nice use of animated GIFs :D Thanks, and good point! I'm sure my notes for the first section had a link but apparently not. I've amended the first section and added the link. The animated GIFs were created by exporting a video from B2 and then running it through ...

Just a note to say that I have added the sections on 'NOP Slides and Clockslides' and the 'Double Sine Wave' effect. Work commitments mean I can't write these up as quickly as I'd like, but I'm very happy to answer questions or discuss areas where people want more detail, and I'm sure everyone else ...

No, that's a different Kieran. He's active on here quite a bit.

(Placeholder: Anything else I forgot!)