Search found 182 matches

by Ramtop
Fri Mar 20, 2020 9:43 pm
Forum: hardware
Topic: Electron Joysticks (and Creeping Madness...)
Replies: 7
Views: 242

Re: Electron Joysticks (and Creeping Madness...)

Hmm. That's certainly a puzzler. Given how much hardware you've managed to eliminate, the first answer that comes to mind is some form of interference. ADCs like the one used for the joystick port are notoriously sensitive. Are you using the same PSU to test both Elks? I guess there's also the possi...
by Ramtop
Fri Mar 13, 2020 10:11 pm
Forum: hardware
Topic: Electron Screen Mode at startup
Replies: 5
Views: 215

Re: Electron Screen Mode at startup

I'm somewhat sure Mode 6 is purely an OS selection, not a hardware default. On multiple occasions I've managed to short either the address or data bus on one of my Elks, which obviously prevents even a single instruction from being executed, and the display always consists of random red/yellow diago...
by Ramtop
Tue Mar 10, 2020 7:07 pm
Forum: hardware
Topic: Elksd-plus1 Interface
Replies: 5
Views: 269

Re: Elksd-plus1 Interface

Ah, yes. I remember now! I did post a tidied up version of that menu not long after our conversation that fixed some issues. But the menu's author, Ray Harper, has produced a new and much improved version that you can find here: http://rayharper.co.uk/stardot/Stardot.html The ElkSD is slower than a ...
by Ramtop
Mon Mar 09, 2020 8:08 pm
Forum: hardware
Topic: Elksd-plus1 Interface
Replies: 5
Views: 269

Re: Elksd-plus1 Interface

I think you were, yes :D And I agree about special use cases like Bad Apple; performance that's fine for loading 20-something KB of game code isn't necessarily up to streaming data. The dilemma I have is just how many people would be willing to pay extra for higher speed? Not many, I think. The ElkS...
by Ramtop
Mon Mar 09, 2020 4:35 pm
Forum: hardware
Topic: Elksd-plus1 Interface
Replies: 5
Views: 269

Re: Elksd-plus1 Interface

Well, I can possibly help you as I designed the ElkSD-Plus1! Can you elaborate on the problems you're having? 'messed up' doesn't really give me much to go on. As for the speed, I've sold about 40 of these and I think you're only the second person to mention it as an issue. The ElkSD can fill the El...
by Ramtop
Sun Mar 01, 2020 2:24 pm
Forum: hardware
Topic: UniMenu for Datacentre, BBC & Electron MMC Games, ADFS Hard Discs
Replies: 8
Views: 324

Re: UniMenu for Datacentre, BBC & Electron MMC Games, ADFS Hard Discs

Gave the Electron menu a try - very nice, Ray! Seemed to be quite a lot faster than the older one, too.
by Ramtop
Mon Feb 24, 2020 1:16 am
Forum: upcoming and recent events & exhibitions
Topic: BBC B meeting Glasgow
Replies: 13
Views: 377

Re: BBC B meeting Glasgow

Very interested in this! The venue would need to be convenient for public transport, though, as I don't drive.
by Ramtop
Sun Feb 16, 2020 10:47 pm
Forum: hardware
Topic: Beeb 1MHz Bus FPGA Adaptor
Replies: 149
Views: 8270

Re: Beeb 1MHz Bus FPGA Adaptor

I suspect they may have some trouble sourcing new stock as getting multi-layer PCBs made in China is basically impossible right now, all the major PCB fabs are either closed, limiting production to 2 layer boards only, or tentatively quoting 30-60 day lead times. Assembly services are also, from wha...
by Ramtop
Sat Jan 18, 2020 7:19 pm
Forum: for sale / freebies
Topic: Electron SD Interface & SW Ram Expansion
Replies: 45
Views: 3963

Re: Electron SD Interface & SW Ram Expansion

Glad to hear you both got your interfaces ok. The Elk is a funny machine. I don't have any history with it, for me the 80s were filled with various Sinclairs and Commodores, and there were plenty of better specced machines even BITD, but I find myself using it more than any of my other 8-bit machines.
by Ramtop
Fri Jan 17, 2020 10:33 pm
Forum: for sale / freebies
Topic: Electron SD Interface & SW Ram Expansion
Replies: 45
Views: 3963

Re: Electron SD Interface & SW Ram Expansion

Just the same as above, drop me an email at my username @gmx.co.uk
by Ramtop
Fri Jan 17, 2020 7:36 pm
Forum: off-topic
Topic: Which soldering iron?
Replies: 22
Views: 1086

Re: Which soldering iron?

Other common problems are: mains wiring that does not meet reasonable electrical practice or U.K. standards. Possibly including fused neutral (only the line should be fused), switched neutral (where the line is not switched), inadequate earthing, U.K. type mains plug with no fuse, undersized U.K. t...
by Ramtop
Fri Jan 17, 2020 10:33 am
Forum: off-topic
Topic: Which soldering iron?
Replies: 22
Views: 1086

Re: Which soldering iron?

A good soldering station doesn't have to cost much at all. I use a Circuit Specialists model that costs less than £60. And, yes, they commit the crime of shipping it with a conical tip, so buying a few useful tips is mandatory to get good results. https://www.circuitspecialists.eu/soldering/solderin...
by Ramtop
Wed Jan 15, 2020 12:10 pm
Forum: for sale / freebies
Topic: Electron SD Interface & SW Ram Expansion
Replies: 45
Views: 3963

Re: Electron SD Interface & SW Ram Expansion

You're not being dim at all :)

The PM option isn't enabled until you have 25 posts on the forum. I got your email and have replied.
by Ramtop
Sun Jan 12, 2020 1:29 pm
Forum: for sale / freebies
Topic: Electron SD Interface & SW Ram Expansion
Replies: 45
Views: 3963

Re: Electron SD Interface & SW Ram Expansion

If you can't get PM access, drop me an email at my username @gmx.co.uk and we'll get an ElkSD64 sorted for you.
by Ramtop
Tue Jan 07, 2020 7:31 pm
Forum: off-topic
Topic: Royal Mail retro video games stamp collection
Replies: 20
Views: 855

Re: Royal Mail retro video games stamp collection

Good to see Elite on there, thoroughly deserved. Four Amiga entries too, my inner Amiganut quite likes that :)
by Ramtop
Sun Jan 05, 2020 7:46 pm
Forum: hardware
Topic: How many 8bit beeb basic machines
Replies: 19
Views: 626

Re: How many 8bit beeb basic machines

Manufacturers sometimes inflate sales numbers. For instance, there were somewhere between 10–30 million C64s made. Everyone who worked for Commodore states the largest number as gospel. The largest number I've seen backed up by serial number statistics is around 18 million. Commodore's record keepi...
by Ramtop
Sun Jan 05, 2020 12:37 pm
Forum: hardware
Topic: How many 8bit beeb basic machines
Replies: 19
Views: 626

Re: How many 8bit beeb basic machines

I strongly suspect the Acorn machines came very close or beat the Amstrad CPCs in the UK at least. Amstrad did a major amount of business in France and Spain, somewhere around 60% of their sales if I recall correctly. That's why Amstrad managed to ride out the 1984 UK market crash that did for Sincl...
by Ramtop
Sat Jan 04, 2020 11:33 pm
Forum: off-topic
Topic: FPGA's and Hardware description languages for laymen
Replies: 17
Views: 612

Re: FPGA's and Hardware description languages for laymen

Ask yourself this question, when will B become 1? If this were a programming language, B would not become 1 until A stopped being 0. But in HDL, the answer would be immediately. That's because in a hardware description language your are describing the functionality and connection of logic cells. 'B...
by Ramtop
Sun Dec 29, 2019 1:45 pm
Forum: hardware
Topic: SD2BBC SD card reader
Replies: 2
Views: 228

Re: SD2BBC SD card reader

Hmm. £5 for a nice case would be acceptable, but £17 is quite steep for what is just a plastic box with a couple of holes in it.
by Ramtop
Sat Dec 21, 2019 4:36 pm
Forum: general
Topic: The passing of Chuck Peddle
Replies: 4
Views: 509

Re: The passing of Chuck Peddle

Very saddening news indeed. Chuck was more responsible for the personal computer revolution than anyone else, a truly great engineer who never stopped innovating.
by Ramtop
Sat Dec 07, 2019 3:47 pm
Forum: software: other
Topic: New music conversion - Castlevania III
Replies: 17
Views: 1278

Re: New music conversion - Castlevania III

Oooh, this is very impressive! I had no idea the Master could sound so good. :D
by Ramtop
Sat Dec 07, 2019 12:13 am
Forum: hardware
Topic: Acorn Elk usb floppy disk drive (DEFUNCT TOPIC SUB)
Replies: 28
Views: 705

Re: Acorn Elk usb floppy disk drive

I'm possibly miss-reading, but the OP doesn't have any form of disk interface? That was what I was referring to.
by Ramtop
Fri Dec 06, 2019 11:19 pm
Forum: hardware
Topic: Acorn Elk usb floppy disk drive (DEFUNCT TOPIC SUB)
Replies: 28
Views: 705

Re: Acorn Elk usb floppy disk drive

Yes, my understanding of it is that a bunch of 'legacy' lines were omitted to save space and cost so there's little to no chance of getting one of these drives working on a standard 34-pin interface. Given how cheap normal floppy drives can be found on EBay I think there's little point trying. Of co...
by Ramtop
Fri Dec 06, 2019 10:45 pm
Forum: hardware
Topic: Acorn Elk usb floppy disk drive (DEFUNCT TOPIC SUB)
Replies: 28
Views: 705

Re: Acorn Elk usb floppy disk drive

USB floppies, at least the ones I've seen, don't use anything like a normal floppy drive internally. It's a mechanism specifically designed for USB use, I don't believe there's any simple way of getting it working on a standard floppy interface.
by Ramtop
Wed Nov 20, 2019 10:37 pm
Forum: off-topic
Topic: Google Stadia
Replies: 10
Views: 667

Re: Google Stadia

It's possible to do such a thing, in theory at least. Google has an idea they refer to as as 'negative latency', where the server tries to guess what the player will do next and send the required data before they actually do it. But they don't have it working yet and I doubt they ever will. The rang...
by Ramtop
Wed Nov 20, 2019 3:56 pm
Forum: off-topic
Topic: Google Stadia
Replies: 10
Views: 667

Re: Google Stadia

Re: Google Stadia The standard rebuke to streaming games over the internet like Stadia is the issue of latency: games that require fast reaction times (like shoot-em-ups such as Doom, Quake, Call of Duty, Halo, etc.) won't take kindly to having your movement inputs sent across the internet to a rem...
by Ramtop
Fri Nov 15, 2019 8:43 pm
Forum: off-topic
Topic: PayPal fees on tax collected by eBay
Replies: 13
Views: 751

Re: PayPal fees on tax collected by eBay

Pretty sure this started within the last month. I sold an item to a US buyer in early October and everything was normal, but got another US sale yesterday and tax has been added and then deducted from the paypal transaction.
by Ramtop
Tue Nov 12, 2019 8:12 pm
Forum: hardware
Topic: Looking for inspiration - debugging E2P
Replies: 91
Views: 4096

Re: Looking for inspiration - debugging E2P

I suspect your Spectrum membrane example is a good measure, Mark. From my own experience, the number of SD interfaces I've sold to forum members is less than 10% of the total. There does seem to be a very large number of retro computer owners who maybe buy some stuff or occasionally watch retro Yout...
by Ramtop
Mon Nov 11, 2019 11:08 am
Forum: hardware
Topic: SD Interface for Plus 1
Replies: 27
Views: 1780

Re: SD Interface for Plus 1

Thank you very much for the kind words!

Pretty much every major retro machine has reasonably priced SD interfaces now and I don't see why the Elk should be left out. And thanks to the assistance I've received from people here on stardot I'm happy to be able to help with that a bit.
by Ramtop
Mon Nov 11, 2019 11:02 am
Forum: hardware
Topic: OSWORD &7F on DFS vs MMFS
Replies: 26
Views: 1145

Re: OSWORD &7F on DFS vs MMFS

Ah, but I believe all of Ramtop's interfaces re-implement a Electron Printer Port (EPP) interface in the CPLD for driving the SD Card, even the cartridge port one. Spot on, Dave. They all implement just enough of the EPP for MMFS to work. The ElkSD-Plus 1 merely changes the addresses used so as not...