Search found 232 matches

by Wheel_nut
Sat Aug 01, 2020 8:42 pm
Forum: 8-bit acorn hardware
Topic: Non-working floppy drive
Replies: 12
Views: 346

Re: Non-working floppy drive

I recently bought a "working" Cumana CS100 floppy drive off ebay, and just got round to trying it and it doesn't work: https://www.youtube.com/watch?v=lG6KAHNIPYI The stepper motor seems to be struggling to move the head, although the head can be freely moved manually. Any ideas how to fix this? Fi...
by Wheel_nut
Wed Jul 29, 2020 1:51 pm
Forum: 8-bit acorn hardware
Topic: Cumana disk fault
Replies: 1
Views: 99

Re: Cumana disk fault

Hi Richard,

Message me if you need help with this, I need to know the make and model of the Bare Drive inside your Cumana enclosure.

Also, I can format Discs for you if you need that.

Robin
by Wheel_nut
Mon Jul 27, 2020 12:59 am
Forum: 8-bit acorn hardware
Topic: PiTube - *FX151 230 n seems odd
Replies: 14
Views: 474

Re: PiTube - *FX151 230 n seems odd

jms2 wrote:
Sun Jul 26, 2020 11:38 pm

Everything works well, except for this strange issue relating to *FX 151 230 n :
Not sure whether this is simply a typo in your Post but the command should be *FX 151,230,n (you missed the commas).
by Wheel_nut
Sun Jul 26, 2020 2:33 pm
Forum: for sale / freebies
Topic: Acorn BBC B with many (mostly) unused extras
Replies: 19
Views: 918

Re: Acorn BBC B with many (mostly) unused extras

Hi Tucker, I am so sorry to hear of your experience on eBay and having been scammed once myself, I don't sell anything on there any more. I have to say that I have sold two of my original collection of five Beebs and a couple of Floppy Disk Drive units by listing them on here and the Facebook site a...
by Wheel_nut
Fri Jul 24, 2020 8:41 pm
Forum: wanted
Topic: TurboMMC
Replies: 5
Views: 349

Re: TurboMMC

Also Steve is very helpful when things go pear shaped from personal experience. There are many MMC/SD options available, more than you can shake a stick at. But if you want support and minimal setup then IFEL or Retroclinc equiv are the best bet (although Retroclinic don't seem to have any in the s...
by Wheel_nut
Fri Jul 24, 2020 6:15 pm
Forum: wanted
Topic: TurboMMC
Replies: 5
Views: 349

Re: TurboMMC

https://www.ebay.co.uk/itm/ACORN-BBC-MICRO-B-MASTER-MMC-SOLID-STATE-DISK-DRIVE/254620594614?hash=item3b4891f1b6:g:ZpcAAOSwzahZiG94 £16, or make your own for 33p From other threads here and on the Facebook forum, I gather that this product is NOT a TurboMMC but a standard User Port adapter. this sel...
by Wheel_nut
Fri Jul 24, 2020 2:34 pm
Forum: off-topic
Topic: Isolating myself - for three months !!!!!!!!!!!
Replies: 40
Views: 2667

Re: Isolating myself - for three months !!!!!!!!!!!

Hello All, It is some time since (Col's) post and I hope that you have all survived the lockdown whether mandated or self-imposed. For myself, I made my 75th Birthday under self-imposed lockdown in June and am glad to say that my immediate family have stayed safe from the dreaded Virus. My collectio...
by Wheel_nut
Fri Jul 24, 2020 1:45 pm
Forum: for sale / freebies
Topic: Acorn BBC B with many (mostly) unused extras
Replies: 19
Views: 918

Re: Acorn BBC B with many (mostly) unused extras

Tucker, I hope that your decision proves to be the right one for you and that you realise the full value of your collection when you sell it. A well cared for and restored Beeb in fully functional condition is a very different thing from a beaten up ex-school example which has been abused and sold o...
by Wheel_nut
Thu Jul 23, 2020 10:36 pm
Forum: 8-bit acorn hardware
Topic: The Master List for New Retro Hardware
Replies: 118
Views: 38377

Re: The Master List for New Retro Hardware

Ken Lowe's Tube Level Shifter (with power outlet for the 1MHz Bus adapter) is missing from your Master List. You will find it in Ken's 1MHz Bus RPI adapter thread.

Robin
by Wheel_nut
Wed Jul 15, 2020 1:02 pm
Forum: 8-bit acorn hardware
Topic: SOLVED: IC Socket Plug
Replies: 7
Views: 244

Re: IC Socket Plug

That looks like two rows of single pin headers soldered to a PCB. Without seeing the other side of the PCB or knowing the Application, it is hard to say. If it is just single row headers you want see listings like this one on eBay https://www.ebay.co.uk/itm/40-Pins-PCB-Connectors-Straight-Angled-Hea...
by Wheel_nut
Wed Jul 08, 2020 10:29 pm
Forum: 8-bit acorn hardware
Topic: Unreliable ROMs / sockets in BBC B
Replies: 12
Views: 439

Re: Unreliable ROMs / sockets in BBC B

Is there a known way in which these things are likely to fail - e.g. is it likely to be the metal in one of the ROM socket 'holes' or the solder joint of the socket to the circuit board? You haven't said which Issue number Motherboard you have but there have been reports of Sockets with "thin" Pins...
by Wheel_nut
Sat Jul 04, 2020 11:06 pm
Forum: 8-bit acorn hardware
Topic: User Port Extender / SD Card Reader Interface
Replies: 10
Views: 572

Re: User Port Extender / SD Card Reader Interface

Edit: Perhaps it would have been more sensible if I had reversed the order of the 6 pin header on my board so anyone could have straightened out the pins on the SD card reader as you suggested, and plugged that directly into my board. The reason for the pin order being the way it is, was to have th...
by Wheel_nut
Sat Jul 04, 2020 10:13 pm
Forum: 8-bit acorn hardware
Topic: User Port Extender / SD Card Reader Interface
Replies: 10
Views: 572

Re: User Port Extender / SD Card Reader Interface

Hi Ken, The standard 30p SD Card reader comes with a right angle Header on the Component side which would have to be removed and replaced with a straight Header on the back. It would appeal to more users if the two connectoes could be made to mate directly without needing soldering skills. Perhaps t...
by Wheel_nut
Thu Jul 02, 2020 8:03 pm
Forum: 8-bit acorn hardware
Topic: MMC card interface
Replies: 719
Views: 110091

Re: MMC card interface

On steves TurboSPI board there is a command in the COP114 rom to copy from the SD to the a BBC floppy. This doesn't work with the MMC card interface that I've built so how can you do it? the command on the COP114 ROM is *MTOD The simple answer is that you can't. The following combinations will work...
by Wheel_nut
Mon Jun 22, 2020 11:46 am
Forum: 8-bit acorn hardware
Topic: MMC card interface
Replies: 719
Views: 110091

Re: MMC card interface

It's not entirely clear from the photos, but from what I can see you're wiring looks correct, so it does sound like you're almost there. Instead of using the specially modified version of MMFS, all you need to do is download the latest version of MMFS that Dave has linked to and transfer the mmfs.s...
by Wheel_nut
Sun Jun 21, 2020 12:45 am
Forum: 8-bit acorn hardware
Topic: 6522 works in IC3 but not in IC69
Replies: 10
Views: 361

Re: 6522 works in IC3 but not in IC69

Mark,

Isn't this the Register Bug that causes these re-marked as Rockwell 6522s from China not to work un User Port applications that use the Register function? The System VIA in IC3 doesn't use thee Register so they work perfectly well there.

Robin
by Wheel_nut
Sun Jun 21, 2020 12:12 am
Forum: 8-bit acorn hardware
Topic: MMC card interface
Replies: 719
Views: 110091

Re: MMC card interface

Yes i've got a WE Rom/Ram card and have just dug out my disk for it. I've got the U / MMFS image on the PC but if the ROM image isn't on the BBC so how would it read from it? Transferring files to/ from PC or Internet source to the SD Card The BEEB.MMB encapsulated files can be accessed using the P...
by Wheel_nut
Sat Jun 20, 2020 7:15 pm
Forum: 8-bit acorn hardware
Topic: MMC card interface
Replies: 719
Views: 110091

Re: MMC card interface

Me again... Okay i've built the MMC interface, soldered it up to a 20pin Idc user port connector using the pin outs below: However the only ROM that i've got available, on a ROM, is the one supplied with the TurboSPI board that I got from Steve Picton. When change his TurboSPI for mine its not reco...
by Wheel_nut
Sun Jun 14, 2020 10:05 pm
Forum: 8-bit acorn hardware
Topic: Acquired my first Model B today
Replies: 41
Views: 1528

Re: Acquired my first Model B today

Does anyone know how to contact Steve Picton directly as I would like to order a couple of TurboSPI boards directly from him Thanks Copied from one of his listings on eBay: Business seller information IFEL 21 Glenfield Road Glenholt PLYMOUTH Devon PL6 7LL United Kingdom Phone:01752 777106 Email:ife...
by Wheel_nut
Thu Jun 11, 2020 1:05 am
Forum: 8-bit acorn hardware
Topic: Loading ROMs into SRAM for beginners?
Replies: 6
Views: 424

Re: Loading ROMs into SRAM for beginners?

So how would check that a ROM has been loaded? Can you suggest a good ROM to load that is easy to test to see if it has actually been loaded? Try: *DIN 300 *RLOAD ADT200 F Break *ROMS I believe that ADT200 (Advanced Disk Toolkit) is in your SD Card Disc 300 and has the *ROMS function built in. If t...
by Wheel_nut
Sun Jun 07, 2020 4:18 pm
Forum: 8-bit acorn hardware
Topic: Removing TurboMMC, installing DFS
Replies: 53
Views: 1671

Re: Removing TurboMMC, installing DFS

That's just made me wonder ... is it possible to transfer files from a TurboMMC disc image to a DFS disc image and vice-versa, on the BBC? Or would you have to go via another computer? Yes, of course you can. If you are using the IFEL Hardware and TurboMMC ROM, there are utilities in Disc 300 to do...
by Wheel_nut
Sun Jun 07, 2020 3:42 pm
Forum: 8-bit acorn hardware
Topic: Disk Drive Problems (Likely User Error).
Replies: 11
Views: 484

Re: Disk Drive Problems (Likely User Error).

If Cmorley's suggestion doesn't fix it, can you check whether you hear a click from the drive when you switch the Beeb on with the Disk Drive connected. The click is the sound of the Head actuator returning to the parked position. If the drive is open, you could try moving the actuator inwards with ...
by Wheel_nut
Sun Jun 07, 2020 1:49 pm
Forum: 8-bit acorn hardware
Topic: Removing TurboMMC, installing DFS
Replies: 53
Views: 1671

Re: Removing TurboMMC, installing DFS

Most of the issues with games and the TurboMMC are caused by programs that use *DISC to select the disc operating system. Turbo MMC listens to *CARD, which is useful if you have both a disc interface and an MMC in your BBC so you can select which one to use. But if you have only MMC in your system ...
by Wheel_nut
Tue Jun 02, 2020 6:33 pm
Forum: 8-bit acorn hardware
Topic: The dishwasher process
Replies: 47
Views: 1335

Re: The dishwasher process

What are our opinions on white vinegar vs cola? There's something right about putting vinegar on chips. I would always choose the totally volatile liquid when cleaning electronic assemblies. Can anybody remember when Freon and Carbon Tetrachloride were commonly used in the industry! Distilled Vineg...
by Wheel_nut
Tue Jun 02, 2020 6:05 pm
Forum: 8-bit acorn hardware
Topic: The dishwasher process
Replies: 47
Views: 1335

Re: The dishwasher process

Again, YMMV and I offer no warranties for my expressed views! Has anyone actually either successfully or even vaguely attempted to sue you for your views? Not sucessfully but I go back a long way in the Electronics industry and to give you an exampleI have to go off topic: TV sets used to have the ...
by Wheel_nut
Tue Jun 02, 2020 3:49 pm
Forum: 8-bit acorn hardware
Topic: How do I copy multiple files from floppy to MMB?
Replies: 4
Views: 232

Re: How do I copy multiple files from floppy to MMB?

One way or another you need something to load from one and write to the other. The SD card that came with my SmartSPI has a ROM image on disk 300 called COP114, that you can load into sideways RAM and use for copying between DFS and MMC. It provides *DTOM and *MTOD commands - copying from DFS to MM...
by Wheel_nut
Tue Jun 02, 2020 3:16 pm
Forum: 8-bit acorn hardware
Topic: The dishwasher process
Replies: 47
Views: 1335

Re: The dishwasher process

I don't like abrading the pins or socket contacts with carborundum paper or diamond files because it takes away the few microns of Tin plating, leaving the mild steel pins exposed. Also, Tin to Tin contact doesn't facilitate electrolytic corrosion but Steel/ Tin/ Steel will corrode quickly if any mo...
by Wheel_nut
Mon Jun 01, 2020 9:59 pm
Forum: 8-bit acorn hardware
Topic: Loading ROMs into SRAM for beginners?
Replies: 6
Views: 424

Re: Loading ROMs into SRAM for beginners?

Need you to share some more information: In Which Sideways Banks are your Aries SRAM located? Do you have a User Port connected SD Card adapter? If so, which MMC Filing System ROM are you using? Check the MMC Disc in which Commsta is located for a file RLOAD If it isn't there, search for it in typic...
by Wheel_nut
Mon Jun 01, 2020 12:10 am
Forum: 8-bit acorn hardware
Topic: The dishwasher process
Replies: 47
Views: 1335

Re: The dishwasher process

I'm very late to the party on this one but I can tell you that the manufacturing process for PCBs in the mid 80's changed to use water based flux and the wash process was not unlike a modern Dishwasher, with very aggressive presssure sprays to get under the components, except that the final rinse st...
by Wheel_nut
Fri May 29, 2020 12:35 am
Forum: 8-bit acorn software: other
Topic: SOLVED: U/MMFS ROM
Replies: 17
Views: 751

Re: U/MMFS ROM

I could transfer the image and some utils to an sd card and put it into my mmc device, could I not then issue a *RLOAD 'filename' F to load it ? I agree an eeprom solution would be a better way forward and allow for future playing around, Here I think I need advice. Yes you can and if you are going...

Go to advanced search