Search found 1163 matches

by KenLowe
Sat Jul 04, 2020 10:55 pm
Forum: acorn atom and acorn system series
Topic: Help, I've just killed my Atom
Replies: 7
Views: 249

Re: Help, I've just killed my Atom

Phew! Everyone needs to bit of good luck occasionally :wink:
by KenLowe
Sat Jul 04, 2020 10:38 pm
Forum: 8-bit acorn hardware
Topic: User Port Extender / SD Card Reader Interface
Replies: 7
Views: 261

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 connectors could be made to mate directly without needing soldering skills. Perhaps ...
by KenLowe
Sat Jul 04, 2020 10:34 pm
Forum: 8-bit acorn hardware
Topic: User Port Extender / SD Card Reader Interface
Replies: 7
Views: 261

Re: User Port Extender / SD Card Reader Interface

The floppy port doesn't have a 5v feed so adding a Gotek shouldn't make any difference to how you power the 1MHz level shifter. Unless of course you're currently using the PSU auxiliary port to power the 1MHz level shifter, and you're now wanting to use that to power the Gotek? If this is the case, ...
by KenLowe
Sat Jul 04, 2020 8:23 pm
Forum: 8-bit acorn hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1210
Views: 142355

Re: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)

I've used ribbon cables about 80cm long without any problem. Can I just check how you're trying to connect PiTubeDirect to your Master? I assume you're using a level shifter to interface between the Master tube port and the RPi Zero. Assuming you are using a level shifter, please make sure the ribbo...
by KenLowe
Sat Jul 04, 2020 1:03 pm
Forum: for sale / freebies
Topic: Econet Socket Hubs and Terminators
Replies: 14
Views: 297

Re: Econet Socket Hubs and Terminators

Is the RJ45 pinout compatible with the "blundell" standard? Can you enlighten me? I have some structured cabling in the house that I would use, are standard ethernet patch cables not suitable? The 'blundell' standard is a definition of the pin mapping between the DIN and RJ45 connectors. These boar...
by KenLowe
Sat Jul 04, 2020 9:41 am
Forum: for sale / freebies
Topic: Econet Socket Hubs and Terminators
Replies: 14
Views: 297

Re: Econet Socket Hubs and Terminators

Looks good and I’m think maybe an opportunity to tidy up the wiring of my setup. I have a lot of cables going around the place... Would I be right in thinking that these avoid the need to daisy chain loads of cables together and allow up to six beebs to be plugged directly into a single hub? FC7A49...
by KenLowe
Wed Jul 01, 2020 1:46 pm
Forum: 8-bit acorn emulators
Topic: Latest version of BeebEm
Replies: 74
Views: 8853

Re: Latest version of BeebEm

Just had a quick read through the change log, and there's been a lot done since 4.14!

Good job =D> =D> =D>.
by KenLowe
Tue Jun 30, 2020 3:17 pm
Forum: 8-bit acorn hardware
Topic: Gotek Flashfloppy not recognising blank ADFS discs?
Replies: 14
Views: 948

Re: Gotek Flashfloppy not recognising blank ADFS discs?

Flashfloppy is very flexible and can be configured for different interleaving options. There are default disk layout assumptions made for the different file extensions, but if they're not correct, these assumptions can be overridden. See img.cfg options here : file-layout = interleaved* | sequential...
by KenLowe
Tue Jun 30, 2020 2:26 pm
Forum: 8-bit acorn hardware
Topic: Model B+ boot problems
Replies: 13
Views: 319

Re: Model B+ boot problems

RAM issue with me too on my B+. I thought I had posted about it on here, but it was actually discussed on the BBC Micro mailing list:

http://mdfs.net/Archive/BBCMicro/2008/04/19/084952.htm
by KenLowe
Tue Jun 30, 2020 10:35 am
Forum: 8-bit acorn hardware
Topic: Econet High Pitched Squeal
Replies: 0
Views: 74

Econet High Pitched Squeal

I went to start up my L3 file server yesterday and when I ran the FS3v125 file I started to hear a very high pitched squeal coming from somewhere around the Econet hardware, and the computer locked up. I've got an IntegraB board installed in the computer which sits over the top of the Econet hardwar...
by KenLowe
Mon Jun 29, 2020 11:36 am
Forum: software & utilities for the pc, mac or unix
Topic: MMBExplorer released!
Replies: 17
Views: 522

Re: MMBExplorer released!

Hi Ken, Minor point. Running on a Windows 10 x64 system, some of the disk images are not showing the correct directories: That's interesting. Which language settings are you using on Windows? It looks to me like it's translating regular ASCII characters to a different code table. Hmmm. Not actually...
by KenLowe
Mon Jun 29, 2020 10:32 am
Forum: software & utilities for the pc, mac or unix
Topic: MMBExplorer released!
Replies: 17
Views: 522

Re: MMBExplorer released!

Minor point. Running on a Windows 10 x64 system, some of the disk images are not showing the correct directories: MMBExplorer1.PNG A couple of additional feature requests from me that would be awesome: the facility to add / remove individual files from the .ssd images via drag and drop. There is usu...
by KenLowe
Sun Jun 28, 2020 11:57 pm
Forum: software & utilities for the pc, mac or unix
Topic: MMBExplorer released!
Replies: 17
Views: 522

Re: MMBExplorer released!

Looks good =D> =D> . I'll give it a test tomorrow.
by KenLowe
Sat Jun 27, 2020 1:55 pm
Forum: 8-bit acorn hardware
Topic: User Port Extender / SD Card Reader Interface
Replies: 7
Views: 261

User Port Extender / SD Card Reader Interface

My 1MHz level shifter board requires a 5V supply to power the level shifter and RPi Zero. The usual source is either from the Tube port or the User port. However, if these ports are already in use, then an alternative source needs to be found. If the tube port is in use, then I'm pretty sure in most...
by KenLowe
Sat Jun 27, 2020 9:47 am
Forum: for sale / freebies
Topic: FS: Raspberry Pi to 1MHz bus interface
Replies: 53
Views: 2865

Re: FS: Raspberry Pi to 1MHz bus interface

rodders wrote:
Sat Jun 27, 2020 6:17 am
Hi Ken, these boards look great. Could you put me down for 1 underside tube shifter please.
I just built a new batch recently, so no problem. I'll send you a PM, but since you've only got two posts you probably won't be able to reply, so I'll provide you with alternative contact details.
by KenLowe
Fri Jun 26, 2020 10:49 pm
Forum: 8-bit acorn hardware
Topic: Solved: Beeb with 8271 Disk Interface Fault
Replies: 4
Views: 152

Re: Solved: Beeb with 8271 Disk Interface Fault

Duh! Turns out this was a Flashfloppy configuration issue. When initially fault finding I was switching between 8271 an 1770 machines. Bad idea. This was masking the fault. When I took my Gotek to another 8271 based beeb I saw the same result. Turns out I had previously altered one of my Flashfloppy...
by KenLowe
Fri Jun 26, 2020 10:23 pm
Forum: 8-bit acorn hardware
Topic: Solved: Beeb with 8271 Disk Interface Fault
Replies: 4
Views: 152

Re: Beeb with 8271 Disk Interface Fault

Here's a couple of screen shots showing what happens:
capture0.png
*INFO *.*
capture1.png
Then *LOAD files
by KenLowe
Fri Jun 26, 2020 10:11 pm
Forum: 8-bit acorn hardware
Topic: Solved: Beeb with 8271 Disk Interface Fault
Replies: 4
Views: 152

Re: Beeb with 8271 Disk Interface Fault

Reviewing the circuit diagram, I've either swapped out or tested the following: IC77 (74LS00) - Tested in logic tester IC78 (8271) - Swapped with known good IC79 (74LS38) - Tested in logic tester IC80 (74LS38) - Tested in logic tester IC81 (74LS393) - Tested in logic tester IC82 (74LS10) - Tested in...
by KenLowe
Fri Jun 26, 2020 8:47 pm
Forum: 8-bit acorn hardware
Topic: Solved: Beeb with 8271 Disk Interface Fault
Replies: 4
Views: 152

Solved: Beeb with 8271 Disk Interface Fault

Hi folks, My primary beeb has started misbehaving again. It's a issue 4 board with 8271 disk interface. When I try to LOAD or *LOAD larger files (eg ROM images) I get a 'Drive fault 10 at xx/C1' error. Catalogue shows up fine, and LOADing or *LOADing small files works fine. I'm using DNFS 1.20, but ...
by KenLowe
Fri Jun 26, 2020 1:57 pm
Forum: 8-bit acorn hardware
Topic: Computer Concept PALPROM redesign.
Replies: 5
Views: 650

Re: Computer Concept PALPROM redesign.

Yes, I've still got a few of these available. I'm a bit busy right now, but I'll try and reply to your PM later this afternoon.
by KenLowe
Sun Jun 21, 2020 11:10 pm
Forum: 8-bit acorn hardware
Topic: MMC card interface
Replies: 719
Views: 106204

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.ss...
by KenLowe
Sun Jun 21, 2020 9:15 pm
Forum: 8-bit acorn hardware
Topic: MMC card interface
Replies: 719
Views: 106204

Re: MMC card interface

Okay i've built the MMC interface, soldered it up to a 20pin Idc user port connector using the pin outs below: Can you post a photo of the card and the 20 pin IDC to check if the wiring looks ok? Okay i've managed to load the MMFS onto my BBC's sideways RAM and with my device attached + card insert...
by KenLowe
Sat Jun 20, 2020 11:36 am
Forum: 8-bit acorn hardware
Topic: AP6 / RH Plus 1 Support ROM *TUBE OFF leaving PAGE at &100
Replies: 19
Views: 566

Re: AP6 / RH Plus 1 Support ROM *TUBE OFF leaving PAGE at &100

daveejhitchins wrote:
Sat Jun 20, 2020 10:38 am
Could a menu system be incorporated into the PiCoPro? E.g. *TUBE 0,0 - (maybe?). It seem there's getting too many to remember . . . Well, for some of us :?

Dave H :D
That would be cool. And *TUBE without any parameters could list the options.
by KenLowe
Fri Jun 19, 2020 11:17 pm
Forum: 32-bit acorn hardware
Topic: CD-ROM drive with CD retainer clips
Replies: 6
Views: 205

Re: CD-ROM drive with CD retainer clips

Sorry for the delay in getting back to you on this. I've just tested the Liteon drive, but couldn't get it to read CDs. However, I do also have a spare Hitachi / LG GCC-4481B DVD / CD drive that does work. It also has the retaining clips to hold CDs in the vertical position; albeit they're smaller t...
by KenLowe
Fri Jun 19, 2020 10:56 pm
Forum: 8-bit acorn hardware
Topic: TURBO MMC or GOTEK ?
Replies: 58
Views: 1133

Re: TURBO MMC or GOTEK ?

I believe the CF cards (with suitable CF / IDE adaptor like this) are directly interchangeable with the IDE HDDs. The CF based drives would therefore require the same patched ADFS as the IDE drive.
by KenLowe
Thu Jun 18, 2020 10:45 am
Forum: 32-bit acorn hardware
Topic: CD-ROM drive with CD retainer clips
Replies: 6
Views: 205

Re: CD-ROM drive with CD retainer clips

I've got one of these. Not sure if it's working, but I should be able to test. PM me if interested...
20200618_103848.jpg
20200618_103838.jpg
by KenLowe
Wed Jun 17, 2020 7:56 pm
Forum: 8-bit acorn hardware
Topic: Ready-made devices to connect BBC Micro to HDMI monitor
Replies: 12
Views: 579

Re: Ready-made devices to connect BBC Micro to HDMI monitor

Possibly not the reply you're looking for, but it sounds like you need to replace the 16MHz X1 crystal in your beeb:

viewtopic.php?f=3&t=17709
by KenLowe
Tue Jun 16, 2020 1:58 pm
Forum: acorn atom and acorn system series
Topic: Yarrb - redesigned
Replies: 211
Views: 8340

Re: Yarrb - redesigned

I'd be very interested what other people use and recommend. I built a 40 pin breakout board to help with the testing of my 6502 Co-Pro. I never actually needed to use it in the end: https://stardot.org.uk/forums/viewtopic.php?f=3&t=18602&p=258556#p262496 I've got a few spare boards and the parts to...
by KenLowe
Tue Jun 16, 2020 1:03 pm
Forum: 8-bit acorn hardware
Topic: TURBO MMC or GOTEK ?
Replies: 58
Views: 1133

Re: TURBO MMC or GOTEK ?

What about a hardisk ? (I read for exemple that DOOM perhaps need a Harddisk as the files are big) If your primary goal is compatibility to play games, then either the Gotek or MMC solution is the best way forward. Most games will not run from SCSI drive unless they are specifically patched to do s...
by KenLowe
Mon Jun 15, 2020 11:11 pm
Forum: 8-bit acorn hardware
Topic: TOP 5 interest of the RASP PI CO PRO ?
Replies: 64
Views: 1332

Re: CO PROCESSOR ON BBC MICRO ???????

I also want a hard disc, so I have a GoSDC. I have no intention of buying a real Winchester (assuming one still actually works)! Whilst the GoSDC and other IDE options are good, they do all require a patched ADFS ROM. If you want to be a bit more authentic, there are now a number of SCSI disk optio...

Go to advanced search