Search found 2143 matches

by RobC
Mon May 21, 2018 2:56 pm
Forum: hardware
Topic: Advice on internal Datacentre 1MHz bus cable installation?
Replies: 5
Views: 143

Re: Advice on internal Datacentre 1MHz bus cable installation?

VectorEyes wrote:Are there recommended tools for carefully hacking sections out of old plastic computer cases?

I used a dremel type tool (actually a Proxxon) when I modded my A4 case. It's good for removing large amounts of plastic quickly and then you can tidy the edges up with a file.
by RobC
Mon May 21, 2018 2:01 pm
Forum: hardware
Topic: Advice on internal Datacentre 1MHz bus cable installation?
Replies: 5
Views: 143

Re: Advice on internal Datacentre 1MHz bus cable installation?

I think Mark usually puts some card between the cable and the underside of the PCB and sticks the cable to the outside of the card using a glue gun (or similar). This prevents any of the legs/sharp bits of the the PCB from damaging the cable. I copied this when mounting my Pi co-pro inside my model B.
by RobC
Sat May 19, 2018 3:06 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 150
Views: 6378

Re: SpectROM - Speccy emulator for the Pi co-pro

I've created a new version of SpectROM that fixes a few issues with the keyboard handling (thanks JGH!) and adds support for loading and saving .tap tape files. It also now works under MOS 3.50 on the Master (at least from my DC).

Enjoy!
by RobC
Fri May 18, 2018 7:09 am
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 150
Views: 6378

Re: SpectROM - Speccy emulator for the Pi co-pro

marcusjambler wrote:Assuming Native ARM required.

They look to work :
*ZXINIT runs and goes back to prompt
*ZXSCREEN changes mode and re-maps the characters and goes back to prompt.

Thanks - I'll have to dig my 3.50 ROM out as it seems they are working correctly.
by RobC
Thu May 17, 2018 8:58 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 150
Views: 6378

Re: SpectROM - Speccy emulator for the Pi co-pro

I'll look into that - it hasn't been tested on MOS 3.50 as I don't have a machine with it in (I do have the ROM somewhere though!).

Could you try *SRLOADing SPROM and then doing *ZXINIT followed by *ZXSCREEN please? It would be useful to know if it hangs at either point.
by RobC
Thu May 17, 2018 8:32 pm
Forum: hardware
Topic: Simultaneous internet & mass storage solutions for the A3010
Replies: 27
Views: 820

Re: Simultaneous internet & mass storage solutions for the A3010

I'll dig the code off my RiscPC once I've put it back together (I'm in the process of combining two machines into one). If I haven't posted it by the weekend, feel free to PM me a reminder! As I never managed to get the transfer speeds up to acceptable levels (and so never tidied the code up), it's ...
by RobC
Thu May 17, 2018 6:21 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 150
Views: 6378

Re: SpectROM - Speccy emulator for the Pi co-pro

Just tested the Easter Egg RC with BeebSCSI and it's all working now :D =D> =D>
by RobC
Thu May 17, 2018 4:46 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 150
Views: 6378

Re: SpectROM - Speccy emulator for the Pi co-pro

Thanks Dave - will do. Will probably have to wait until after the kids go to bed now though :(
by RobC
Thu May 17, 2018 4:10 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 150
Views: 6378

Re: SpectROM - Speccy emulator for the Pi co-pro

Thanks JGH - I managed to find my serial cable and have confirmed that RAMFS is using transfer types 0 & 1. Looking at the co-pro memory using the built-in *MEM command (thanks Dave!), it looks like ZXSPEC isn't being loaded properly. The first half of the file (approximately) looks okay but the...
by RobC
Thu May 17, 2018 3:19 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 150
Views: 6378

Re: SpectROM - Speccy emulator for the Pi co-pro

Thanks Dave.

Does anyone know what RAMFS on the DC uses? I'm guessing that it has a similar issue but I can't find my USB->serial cable to check with a debug build of the Pi co-pro!
by RobC
Thu May 17, 2018 12:58 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 150
Views: 6378

Re: SpectROM - Speccy emulator for the Pi co-pro

Just had a thought - earlier in this thread, we mentioned that the native ARM core doesn't support 256-byte transfers through TUBE register 3. Does ADFS 1.50 use these for *LOAD etc.? (Although, thinking about it, it seems odd that ADFS 1.53 wouldn't do the same and it works happily on my DC under t...
by RobC
Thu May 17, 2018 12:36 pm
Forum: hardware
Topic: Simultaneous internet & mass storage solutions for the A3010
Replies: 27
Views: 820

Re: Simultaneous internet & mass storage solutions for the A3010

The plipbox is going to take some work - we need a PLIP driver for RISC OS, and that means writing one from scratch...... When I wrote a RISC OS driver for the CP2201 , I used the EtherY driver as a staring point. Once you've got functions to initialise the device and send and receive packets, it's...
by RobC
Thu May 17, 2018 12:24 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 150
Views: 6378

Re: SpectROM - Speccy emulator for the Pi co-pro

jgharston wrote:*MDUMP on the Tube Utilities disk and BBC Utilities Disk...

Many thanks - I'll do some more investigation later today.
by RobC
Thu May 17, 2018 9:47 am
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 150
Views: 6378

Re: SpectROM - Speccy emulator for the Pi co-pro

Finally managed to find some time to get my BeebSCSI up and running and I have replicated Marcus's hanging issue. However, I don't think it's anything to do with SpectROM as BAS135 and my ZX81 and Jupiter Ace emulators also hang when loaded from BeebSCSI (or the DC's RAMFS). All work correctly on my...
by RobC
Mon May 14, 2018 4:40 pm
Forum: hardware
Topic: Cheap web-modem for the beeb/master (and arc if ya like!)
Replies: 60
Views: 1707

Re: Cheap web-modem for the beeb/master (and arc if ya like!)

Andy1979 wrote:It's a shame my Master Compact is lacks the serial upgrade to make use of this...

Mark@Retroclinic has one upgrade kit still available on eBay.
by RobC
Fri May 11, 2018 3:02 pm
Forum: programming
Topic: RISCPC accessing parallel port in BASIC
Replies: 5
Views: 188

Re: RISCPC accessing parallel port in BASIC

There's some info on how to use the SYS command here . From memory, it's fairly straightforward once you get used to it but it's years since I did any serious BASIC programming on RISC OS. Might be worth playing with something like OS_Plot just to get started as it's like using the BASIC PLOT command.
by RobC
Fri May 11, 2018 11:50 am
Forum: programming
Topic: RISCPC accessing parallel port in BASIC
Replies: 5
Views: 188

Re: RISCPC accessing parallel port in BASIC

Have to admit that this isn't something I've done but the RISC OS Programmer's Reference Manual suggests that the Parallel_Op SWIs allow you to access the parallel port registers. You can access the OS SWI calls from BASIC using the SYS command.
by RobC
Thu May 10, 2018 8:52 pm
Forum: software: classic games
Topic: Nula Elite
Replies: 5
Views: 304

Re: Nula Elite

Are they 'lit' and shaded or a mix of colours? There's no lighting going on - Nick's code uses mode 5 so there aren't enough colours available to shade each face separately. If I could get it running in mode 2 then it would be doable. Your next project: Solid 3d Elite for the Beeb....?! I'd love to...
by RobC
Thu May 10, 2018 5:39 pm
Forum: software: classic games
Topic: Nula Elite
Replies: 5
Views: 304

Re: Nula Elite

That looks good. I had a modified version of Nick Jameson's Beeb3D demo running at Wakefield to show off some Elite ships in solid 3D with enhanced palettes: cobra.jpg viper.jpg They obviously look better when they're spinning! Given more time, I'd like to try writing a 16-colour mode 2 version for ...
by RobC
Thu May 10, 2018 6:36 am
Forum: hardware
Topic: A blitter for the beeb?
Replies: 59
Views: 4209

Re: A blitter for the beeb?

Well done :D =D> =D>

Disk error #26 has come up on here before - it's caused by the '*' as FLEX doesn't understand it.
by RobC
Sun May 06, 2018 3:12 pm
Forum: hardware
Topic: BeebSID and 1MHz bus silence
Replies: 2
Views: 226

Re: BeebSID and 1MHz bus silence

Glad you've got this sorted :D =D>
by RobC
Sat May 05, 2018 4:59 pm
Forum: software: new games
Topic: New version of Scramble for the beeb (just starting)
Replies: 33
Views: 1569

Re: New version of Scramble for the beeb (just starting)

tricky wrote:It is just changing the background colour, but I think this version of beebem doesn't update the palette as frequently as b-en, plus I wait half a scanline before going back to black.

Ah - thanks, that makes sense. It's a neat effect.
by RobC
Sat May 05, 2018 2:29 pm
Forum: software: classic games
Topic: My final unanswered Exile question
Replies: 61
Views: 2701

Re: My final unanswered Exile question

On the subject of Exile - what would have to be done to make the game scroll smoothly? The jerky-scrolling has never annoyed me, but I was thinking that with new add-ons like the VideoNula, would it be possible to recode the game to smooth things out? This is something I've wanted to do with games ...
by RobC
Sat May 05, 2018 12:02 pm
Forum: software: new games
Topic: New version of Scramble for the beeb (just starting)
Replies: 33
Views: 1569

Re: New version of Scramble for the beeb (just starting)

This is looking really good. I tried to write something similar on the A3000 BITD but this looks much better :oops: =D> Out of interest, how do you draw the lines that mark the time taken for each block of work? I'm used to changing the background colour by palette switching but this looks much neat...
by RobC
Fri May 04, 2018 2:11 pm
Forum: hardware
Topic: RiscPC Second CPU slot ARM possible?
Replies: 8
Views: 575

Re: RiscPC Second CPU slot ARM possible?

I find it odd that Acorn never designed it so you could add a second ARM processor in that slot in the first place. After all, you could get a co-pro for the BBC, so why not the RiscPC? The StrongARM effectively killed off the Hydra multi-processor board so maybe it also killed any notions Acorn ha...
by RobC
Thu May 03, 2018 6:57 am
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 224
Views: 20083

Re: Going great guns on a Prince of Persia port...

Thanks Kieran - that's awesome.
by RobC
Mon Apr 30, 2018 7:27 pm
Forum: general
Topic: The Beeb's (first) 32-bit second processor on TV
Replies: 16
Views: 639

Re: The Beeb's (first) 32-bit second processor on TV

Commie_User wrote:More Stanley Baxter. Wasn't there the same co-pro for the Elk?

Yes - I've had my 32016 running on the Elk via Dave H's ATI.
by RobC
Mon Apr 30, 2018 3:35 pm
Forum: hardware
Topic: Master + VideoNuLA + internal PiTubeDirect, but won't turn on
Replies: 7
Views: 292

Re: Master + VideoNuLA + internal PiTubeDirect, but won't turn on

As Ed says, if you're not seeing anything from the Master (i.e. it's completely dead), check for shorts across the PiTubeDirect pins. (For info, 0V and +5V are next to each other on pins 1 and 2 of SKT1 and pins 3 and 4 of SKT2.) I have the internal PiTubeDirect+VideoNuLA running happily in my Maste...
by RobC
Sat Apr 28, 2018 5:18 pm
Forum: hardware
Topic: SpectROM - Speccy emulator for the Pi co-pro
Replies: 150
Views: 6378

Re: SpectROM - Speccy emulator for the Pi co-pro

Thanks. Just tried it on my Master and I have the same issue. Not really sure why it's not working as the ROM seems okay. I'll look into it asap and will post up a new version as soon as I've got it sorted. EDIT: I've got an earlier version running on the Master from RAMFS and ADFS so not sure what'...