Search found 2608 matches

by RobC
Sun Jun 23, 2019 3:50 pm
Forum: hardware
Topic: Failure rates of Risc PC - PC Cards?
Replies: 6
Views: 162

Re: Failure rates of Risc PC - PC Cards?

Not as great a failure rate as you've seen but I picked up 6 RISC PCs a good while back and only four out of the six PC cards were working.

PC cards used to turn up pretty frequently on the charity stand at RISC OS shows but I can't remember seeing too many recently.
by RobC
Tue Jun 18, 2019 12:06 pm
Forum: software: other
Topic: 6809 Flex.....
Replies: 7
Views: 234

Re: 6809 Flex.....

Hi Phill, I am at work at the moment but will dig out my notes etc. this evening and, if you PM me your email address, I'll mail you the details. I got the sources from Jim Davis in the Flex User Group and, after writing my own drivers, compiled Flex using a 6809 compiler on Windows (think it was a0...
by RobC
Sun Jun 16, 2019 8:32 pm
Forum: general
Topic: “Send no money now!” — Electron news from 1982
Replies: 9
Views: 324

Re: “Send no money now!” — Electron news from 1982

It would be great to get the definitive story on this stuff from some of the people who worked for Acorn at the time. The Register write-up that Ed pointed out mentions that eventual Elk PCBs were marked 1982 and photos of the eventual Electron case appeared in the press in late 82. So, it does seem...
by RobC
Thu Jun 13, 2019 8:18 pm
Forum: software: classic games
Topic: Tapes/Discs/Roms cat CM
Replies: 10
Views: 5951

Re: Tapes/Discs/Roms cat CM

CMcDougall wrote:
Thu Jun 13, 2019 7:32 pm
fill your boots :
Many thanks. Here's hoping that the rest of it turns up at some point [-o<
by RobC
Thu Jun 13, 2019 6:58 pm
Forum: software: classic games
Topic: Tapes/Discs/Roms cat CM
Replies: 10
Views: 5951

Re: roms

Digging up an antique post, but did these ever get posted anywhere? There are maybe a handful of ROMs that don't seem to be found anywhere, such as WW+2 Extra 1.01, Microbrush Injector 1.00, BEEBED.1.04, AUTO.BEEBAID..1.05, and probably others. Indeed - I've posted about Microbrush before and it's ...
by RobC
Thu Jun 06, 2019 6:24 pm
Forum: for sale / freebies
Topic: Some Books I don't need . . . (Gone)
Replies: 12
Views: 336

Re: Some Books I don't need . . . (Gone)

Thanks Dave - the books arrived today :D =D>
by RobC
Wed Jun 05, 2019 5:30 pm
Forum: hardware
Topic: A310 case restoration
Replies: 3
Views: 118

Re: A310 case restoration

Great job =D> =D>

That Rustoleum paint is the bees knees for Arc cases.

I've found that Retrobriting works well on the plastic bits even if they are very yellowed.
by RobC
Tue Jun 04, 2019 9:36 pm
Forum: for sale / freebies
Topic: Some Books I don't need . . . (Gone)
Replies: 12
Views: 336

Re: Some Books I don't need . . .

daveejhitchins wrote:
Mon Jun 03, 2019 5:31 pm
On their way, Rob.

Dave H :D
Thanks Dave - that's very kind of you.
by RobC
Mon Jun 03, 2019 5:15 pm
Forum: for sale / freebies
Topic: Some Books I don't need . . . (Gone)
Replies: 12
Views: 336

Re: Some Books I don't need . . .

I'd love the plotter books if they're still available please Dave.

Happy to pay postage - just let me know how much.

Thanks,

Rob
by RobC
Thu May 30, 2019 5:56 pm
Forum: hardware
Topic: BEEB Graphics Screen
Replies: 14
Views: 456

Re: BEEB Graphics Screen

In principle 16-bit-wide video memory could have been used rather than 8-bit, doubling the bandwidth (e.g. to allow 1280 pixels horizontally) without having to increase the memory access speed. I'm not saying that this is something Acorn had in mind, but it would have been achievable with the techn...
by RobC
Thu May 30, 2019 6:43 am
Forum: hardware
Topic: BEEB Graphics Screen
Replies: 14
Views: 456

Re: BEEB Graphics Screen

Is there any way to display tge whole of tge Graphics Screen. I think what I am asking can a high resolution graphics card bee added? Or is the gardware not capable of such an hardware addition. The resolution of the Beeb's video hardware is constrained by the speed of memory access (2MHz) and so t...
by RobC
Sun May 26, 2019 12:37 pm
Forum: hardware
Topic: MIDI->STM32->Beeb->Music 5000
Replies: 28
Views: 800

Re: MIDI->STM32->Beeb->Music 5000

This is fantastic - will definitely be building one when I've got a bit more time.

Many thanks Daniel :D
by RobC
Fri May 24, 2019 8:15 pm
Forum: software: new games
Topic: Doom?
Replies: 123
Views: 5609

Re: Doom?

is there much soldering involved with the VideoNuLA? You usually have to desolder the original ULA on a Master but, if you don't fancy doing it yourself, I offer a free desoldering service. You just have to post the PCB to me and cover return postage. Alternatively, if you're anywhere near Newport,...
by RobC
Tue May 21, 2019 6:16 pm
Forum: hardware
Topic: B+ DFS & ADFS versions for PAGE E00
Replies: 2
Views: 208

Re: B+ DFS & ADFS versions for PAGE E00

I see that some people have both DFS and ADFS installed on their machines. Do both of them sit happily together and what happens to PAGE? For ADFS131EOO, how do you set this up to work correctly? Does it only work loaded into SWRAM, or can you put it in an EPROM and it will use SWRAM for its work s...
by RobC
Tue May 21, 2019 5:36 pm
Forum: software: new games
Topic: Doom?
Replies: 123
Views: 5609

Re: Doom?

CraigsBar wrote:
Tue May 21, 2019 1:26 pm
Yeah, I have a datacentre fitted already. Will be ordering a VideoNuLA on payday! Then doom on a beeb, yay!
Great - do contact me on here rather than buying one on eBay as it'll be cheaper...
by RobC
Mon May 20, 2019 9:05 pm
Forum: software: new games
Topic: Doom?
Replies: 123
Views: 5609

Re: Doom?

Doom should work with BeebLink, I'd hope - there's a somewhat arbitrary 16 MByte file size, mainly so *INFO output can print the size in 6 digits, but I think the Doom WADs are smaller than that. That sounds good - the WADs I've been using for testing are about 4MB. If Doom uses OSBGET to read the ...
by RobC
Mon May 20, 2019 5:24 pm
Forum: software: new games
Topic: Doom?
Replies: 123
Views: 5609

Re: Doom?

Do you reckon it will work with Tom's Beeblink via Chris's TubeSerial adapter? I've booted Elite through that off a Pi Zero. started up really quickly. I know there's no 31 file limit but not sure about capacity. Unfotunately, I've no idea as I've never used one. The filing system needs to be able ...
by RobC
Sun May 19, 2019 4:04 pm
Forum: software: new games
Topic: Doom?
Replies: 123
Views: 5609

Re: Doom?

wow super amazing =D> , now i will have to purchase a video nula. from where the game files can be run ?, you need a datacentre to run it or they can be in the mini sd interface also. Thanks. I haven't released it yet as I've still got to fix a few bugs and get sound working. Unfortunately, real li...
by RobC
Fri May 17, 2019 7:05 am
Forum: hardware
Topic: CompactFlash card on Castle A30x0 IDE Mini Podule
Replies: 30
Views: 904

Re: CompactFlash card on Castle A30x0 IDE Mini Podule

Doesn't the Castle minipodule just mimic the Acorn's motherboard IDE interface and that's why it can use ADFS rather than needing IDEFS etc. ?

I'd assumed that's why Wizzo works with the A4, A5000, A4000, A3020 and the Castle podule.
by RobC
Thu May 16, 2019 10:07 am
Forum: hardware
Topic: CompactFlash card on Castle A30x0 IDE Mini Podule
Replies: 30
Views: 904

Re: CompactFlash card on Castle A30x0 IDE Mini Podule

Just one more thing that I've just remembered. I got partial success with some cards - all looked to be well until I tired loading a large file and then I got problems. ISTR Pacmania crashing during loading as one of the failures.
by RobC
Thu May 16, 2019 6:56 am
Forum: hardware
Topic: CompactFlash card on Castle A30x0 IDE Mini Podule
Replies: 30
Views: 904

Re: CompactFlash card on Castle A30x0 IDE Mini Podule

Mine only worked when using two cards in a dual CF adapter like this: https://usb.brando.com/prod_img/zoom/UCABL008700_01_L.jpg I think I only got it working with two Sandisk 256MB cards (the standard blue and red ones) as it wasn't happy with anything else I tired. I haven't tried it but I very muc...
by RobC
Thu May 16, 2019 6:51 am
Forum: software: new games
Topic: Doom?
Replies: 123
Views: 5609

Re: Doom?

Oh my! After the recent epic master games (PoP and SCR) this is a whole new level of awesome! I have a pi zero Co pro emulator in my master, that should be enough right? As the files are massive, you'll need some sort of hard drive too (e.g. DC, BeebSCSI, GoSDC or Dominic's 1MHz bus->Pi interface)....
by RobC
Wed May 15, 2019 9:21 pm
Forum: hardware
Topic: A4 laptop - no display
Replies: 2
Views: 224

Re: A4 laptop - no display

What happens if you do F12 then press copy (or go into BASIC and do VDU 7)? Do you get the bell sound? If that's working, I'd definitely concentrate on getting it working with an external monitor. Have you tried configuring the sync setting? Good luck with this - A4s are a pain to work on and the FF...
by RobC
Wed May 15, 2019 1:10 pm
Forum: software: new games
Topic: Stunt Car Racer for BBC Master
Replies: 60
Views: 3118

Re: Stunt Car Racer for BBC Master

mr-macrisc wrote:
Wed May 15, 2019 7:35 am
We can but dream. Be even cooler if there was a nula version to make it proper colourful.
VideoNuLA would help with the horizontal scrolling too as you can do single pixel scrolling in all modes. (And even half pixel scrolling in mode 1 but you can't plot sprites on half pixels boundaries...)
by RobC
Mon May 06, 2019 4:51 pm
Forum: software: new games
Topic: Doom?
Replies: 123
Views: 5609

Re: Doom?

Did I already ask about the four palette X four colours at 240x256 nula option? If not, what do you think? I think you did but I must admit that I'd forgotten about it and I always struggle to come up with decent algorithms when thinking about how best to use the attribute modes. Any advice/suggest...
by RobC
Sat May 04, 2019 5:39 pm
Forum: software: new games
Topic: Doom?
Replies: 123
Views: 5609

Re: Doom?

Thanks to Marcus and Andy for giving an update. Just to add that the B/B+ version is using vertical rupture to give double buffering for the play area and a single buffered, full width status bar. The four colour/mode 1 dithering is pretty simple but you can choose the four colours out of the Beeb's...
by RobC
Fri May 03, 2019 2:48 pm
Forum: hardware
Topic: IDE interfaces - hardware details
Replies: 112
Views: 5695

Re: IDE interfaces - hardware details

So, i have a last question for @RobC: you said you use 4.39 and RO6... so, your IDE Podule works with softloaded RO6? I've not tried it. I do have an original ICS podule in my A310 but I haven't put a ZIDEFS ROM in it yet. I could try it if you want me to but it might take me a few days to get arou...
by RobC
Fri May 03, 2019 7:45 am
Forum: general
Topic: Bit of fun - One change only
Replies: 97
Views: 3232

Re: Bit of fun - One change only

The C64 also had analogue pins in its two joystick ports. Must have been in the VIC 20 too. I think the C64 uses the SID for ADC rather than using a dedicated ADC chip like the Beeb or Einstein. Looking through my Einsten hardware manual last night, it seems that its ADC is only 8-bit (as is the C6...
by RobC
Thu May 02, 2019 8:25 pm
Forum: general
Topic: Bit of fun - One change only
Replies: 97
Views: 3232

Re: Bit of fun - One change only

As far as I can remember, the BBC Micro was the only 8 bit machine with a true analogue port. As in it used a proper ADC chip. Pretty sure the Einstein has one too. ISTR an Einstein magazine article which says it has a better resolution than the Beeb's ADC. The 6845 itself does not care about the w...
by RobC
Thu May 02, 2019 10:12 am
Forum: general
Topic: DRAGON USER gripes about the Computer Literacy Programme.....
Replies: 52
Views: 1246

Re: DRAGON USER gripes about the Computer Literacy Programme.....

...maybe I lived in a bubble because back in the day I never owned or knew anyone that owned a Dragon. I don't even remember seeing it for sale in the local shops. I knew a few people with one when I was at school. A couple of my cousins had them too. However, that's probably not surprising given t...