stardot.org.uk

Unfortunately the non-functioning keys are preventing me from doing much more than typing on the screen right now (one of the keys that doesn't work is the D so I can't type any of the MMFS commands required to load any software!) so I can't really put it's through it's paces until I resolve the ke...

Thanks. I'll have a go at cleaning/reseating the ULA later today. I tried some switch cleaner on the sticky keys and managed to get a few back but 9, Left Arrow, Right Arrow, P, Up Arrow, D, Left Shift and Full Stop are all completely not working. Is it possible to remove individual switches to bet...

Welcome to the Forum, Jon . . . I hope you stay around to enjoy what we do here.

Let me check my DD Disc stock - I'll get back to you if I have enough. I can also do EPROMs.

Dave H.

Edit: Yup! Plenty of DD discs. PM sent.

steve3000 wrote: ↑

Sat Aug 08, 2020 8:49 pm

daveejhitchins wrote: ↑

Sat Aug 08, 2020 3:44 pm

ICS IDE Interface (Baildon - V6A PCB - ROM: ICS 1994 A3IN.3 3V6 3V14)

Hi Dave, could you possibly take an image of that 3v14 ROM? I don't think we have that one and I'd like to try on my interface...

Steve . . . Here you go:
Dave H

I suppose I should get my Kenda DMFS back from storage and see if I can do anything with it. My inventory records that I have its manual, but that it has a pin missing from the module. I recall it arrived that way as it had been posted in a black plastic mailing bag with no other protection, and se...

If you're wanting an original P.R.E.S. Disc Drive to go with your AP3/4 (?) I have two on sale here . Does the Disc interface have both DFS and ADFS? If not that's an ese fix! Thanks. I'll have a look once I've got it up and running. Which filing system is best (I only used tapes plus we had a coup...

Welcome to the Forum, Tim . . . Enjoy . . .

If you're wanting an original P.R.E.S. Disc Drive to go with your AP3/4 (?) I have two on sale here.

Does the Disc interface have both DFS and ADFS? If not that's an ese fix!

Dave H.

Welcome to the Forum, Brett . . . Enjoy . . .

Dave H.

Today I have build a second board (in the way that it should be) and tested it with the AP6v131 ROM. There is a little cosmetic clash on a power on and CTRL BREAK reset. The AP6 ROM comes first and displays its banner "Acorn Electron 32K" (it does not recognize my 128K paged ram) and below my banne...

I had an external double denstiy 5.25" drive connected to my StrongARM RiscPC, to read DFS and DDFS discs in late 90s, (I used this setup to write !ImageDFS) - so it should be possible with a RPC700... Have you read the RiscWorld articles on adding floppy drives to various Archinedes and RiscPCs - ...

I now have a 5 1/4" Drive that may be versatile enough to work with my RiscPC 700. The Specifications are readily available for the Chinon FZ-506 here which gives me a good start. I've not found a TRM or Schematic for the RiscPC 700 - OK there is a schematic on Chris' Acorns but it looks like a deve...

anightin wrote: ↑

Sun Aug 09, 2020 7:47 am

I could be wrong but I think that thermal fuse is embedded in the transformer itself so no need to add another.

That's correct . . . In some cases you can get-at-them, if needed.

Dave H.

All 'good' transformers have a thermal fuse! I have some, if anyone ever needs them?

Dave H.

steve3000 wrote: ↑

Sat Aug 08, 2020 8:49 pm

daveejhitchins wrote: ↑

Sat Aug 08, 2020 3:44 pm

ICS IDE Interface (Baildon - V6A PCB - ROM: ICS 1994 A3IN.3 3V6 3V14)

Hi Dave, could you possibly take an image of that 3v14 ROM? I don't think we have that one and I'd like to try on my interface...

Will do . . .

Dave H.

Colday wrote: ↑

Sat Aug 08, 2020 6:02 pm

Oh, that sounds fine.

Can you send me 2x of each and I'll have a play.

Cost plus shipping will be.....?

Within the UK, £2 (First Class Large Letter). Please PM me your full name and address.

Thanks - Dave H.

danielj wrote: ↑

Sat Aug 08, 2020 6:36 pm

Dave, can I nobble the DS elk external drive please?

It's yours, Daniel. I'll get it ready on Monday and let you know P&P.

Thanks - Dave H.

A 5 1/4" Drive housing with its own mains power supply. £15 plus P&P. This drive originally housed a DVD drive with a parallel interface. I've used it with a 5 1/4" drive with the parallel interface, however, I no longer have the Parallel cable. It should easy to just bring the drive ribbon cable ou...

A Viglen 5 1/4" Drive caddy with Beeb/Master power cable. £5 plus P&P Dave H.

Three P.R.E.S. Electron external Disc Drives (they also work with the Beeb and Master!) Counting from left to right 1 - 3. #1 is the standard housing but contains a double sided Chinon FB-354 Drive - £30 plus P&P Now sold. # 2 and 3 are the standard Electron single sided Chinon F-353 - £25 each plus...

According to the list here it supports both the parts. In most cases the manufacturer isn't that important! Except if you have the "identify part/check ID" switched-on. This checks the part ID before any operation and warns you if it doesn't match. The only time I have to be careful is when programm...

Fitted all the new parts to my non-working PSU and hey-presto it's now all working :D So, I have available, initially, 4 kits (I can get parts for another 5 quickly). The kit comprise all the electrolytics, the large non-electrolytic (2u2) that sits next to the full wave bridge, all the Power Semico...

So experimenting sometime gives you the best results - You won't damage anything, taking this approach! That's reassuring! I've seen several comments about no need to format, just initialize the disc but does that apply if the disc had been formatted on a different system such as a PC (not the Risc...

ICS IDE Interface (Baildon - V6B PCB - ROM: ICS 1994 A3IN.3 3V6 3V15)
Fitted with an Hitachi DK211A-54 Drive (540MB) Formatted to 511MB
Looking for £40 - Some photos: Dave H.

ICS IDE Interface (Baildon - V6A PCB - ROM: ICS 1994 A3IN.3 3V6 3V14)
Fitted with an IBM WDA-280 Drive (80MB) Formatted to 81MB
Looking for £40 - Some photos: Davve H.

Watford A3000 IDE Interface with 2GB CF - Currently formatted with one partition of 338MB.
Looking for £40 - Some photos: Dave H.

I have a new TL866II PLUS I've never programmed a ROM. I want something that this device can program (LOL) and that I can put Tricky's test ROM onto. I have 4 EPROMS 2x 2764D and 2x 27128's that I have bought a UV eraser for. I just want something I know will work so that I can learn how to do it. ...

IIRC most hard drives can accept various Heads, Cylinders and Sectors and just maps them to the physical drive. So experimenting sometime gives you the best results - You won't damage anything, taking this approach! - I mean . . . 16 Heads! they stopped using that many even further back :lol: Dave H.

Colday wrote: ↑

Sat Aug 08, 2020 2:46 pm

I'm looking to buy some EPROM/EEPROM for my Beeb.

Anyone got any for sale before I resort to FleaBay?

What are you looking for?
I have New - 28C256 and 27C512 and various used parts.

Dave H.

drfloyd wrote: ↑

Sat Aug 08, 2020 10:22 am

ok, so apparently Archimedes is not a gaming machine

Well . . . There are games available, but I'm not the one to list the top 10. I played, and really enjoyed (as it didn't involve too much coordination!), Lemmings !

Dave H.

Welcome to the Forum, Ian . . . Enjoy and good luck with your discs . . .

Dave H.