Search found 152 matches

by Ottly
Thu Apr 21, 2016 2:56 pm
Forum: wanted
Topic: MDFS Hard Drive Case
Replies: 3
Views: 616

MDFS Hard Drive Case

Hi All, I'm after a MDFS Hard Drive case like the one pictured (The top box/unit). I don't need a hard drive in it, I would just like the empty case preferably with the power supply still. Would also like the front drive plate with LED in it. Will happy pay your price and postage costs. Thanks, Scot...
by Ottly
Mon Apr 11, 2016 1:03 am
Forum: 32-bit acorn hardware
Topic: Acorn 28-AKF17 Monitor
Replies: 27
Views: 2936

Re: Acorn 28-AKF17 Monitor

Take a look at my thread and see if the power switch is similar or the same? A lot of these monitors are the same on the inside.

viewtopic.php?f=45&t=10948
by Ottly
Sat Apr 09, 2016 2:57 pm
Forum: other vintage hardware, software and languages
Topic: CM8833-II LOPT/Flyback Transformer
Replies: 4
Views: 1822

Re: CM8833-II LOPT/Flyback Transformer

Also an FYI for anyone wanting to replace the dodgy power switch on these monitors (they usually don't stay latched in). I've had success with purchasing a replacement from here http://www.wagneronline.com.au/pcb-mount/switches/electronic-components/swp583-2978/347/pd/ Wagner Electronics (Sydney, Au...
by Ottly
Sat Apr 09, 2016 2:35 pm
Forum: other vintage hardware, software and languages
Topic: CM8833-II LOPT/Flyback Transformer
Replies: 4
Views: 1822

Re: CM8833-II LOPT/Flyback Transformer

Well I have some good news, I replaced the LOPT in both faulty monitors with the "new" dodgy looking LOPTs. I've managed to resurrect one, the other has a power supply issue I need to troubleshoot. The loose red return wire is required and if it becomes loose then you have no image. It seems bizarre...
by Ottly
Fri Apr 08, 2016 12:53 am
Forum: other vintage hardware, software and languages
Topic: CM8833-II LOPT/Flyback Transformer
Replies: 4
Views: 1822

Re: CM8833-II LOPT/Flyback Transformer

Hi Daniel,

Yes, I had a close look at those ones too. They do look the same. Guess I'll put it in and see how I go. Don't really have much of a choice, it appears to be the only LOPT that's available for this type of monitor.
by Ottly
Thu Apr 07, 2016 3:32 pm
Forum: other vintage hardware, software and languages
Topic: CM8833-II LOPT/Flyback Transformer
Replies: 4
Views: 1822

CM8833-II LOPT/Flyback Transformer

Hi All, I have 4 Phillips CM8833-II Monitors of which 2 have recently stopped working. From the research I've done on the web and from comparing resistance values of the same points from a working monitor to the ones that are not, it looks like the LOPT/Flyback transformers are the suspect. The curr...
by Ottly
Fri Mar 18, 2016 11:13 pm
Forum: 8-bit acorn hardware
Topic: Winchester 130 - Formatting / Free Space Low
Replies: 7
Views: 1020

Re: Winchester 130 - Formatting / Free Space Low

I have an interest in seeing how other econet file servers were setup back in the day. Logon system used, menus, applications & games. Any chance of doing an archive of the drive before its all lost?
by Ottly
Tue Mar 08, 2016 1:30 pm
Forum: 8-bit acorn software: other
Topic: L3 Server Changelog
Replies: 27
Views: 3939

Re: L3 Server Changelog

What happens if you *CAT a 'new' directory, one that has a ^ entry, with an old version of FS? Do you see the ^ entry? Is it possible for you do post a sector dump of a 'new' directory to see how it's stored and if it does match the FileStore? When I *CAT a 'new' directory with a ^ entry on FS-093 ...
by Ottly
Tue Mar 08, 2016 11:30 am
Forum: 8-bit acorn software: other
Topic: L3 Server Changelog
Replies: 27
Views: 3939

Re: L3 Server Changelog

Hi Everyone, STOP THE PRESS.....STOP THE PRESS..... The last couple of days I've been playing around with copying files and creating directories etc.. using the new Level 3 File Server version 1.24 that IanB kindly shared with us all. For some reason I decided to try a *DIR ^ and what blew me away w...
by Ottly
Sat Feb 20, 2016 12:33 pm
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

danielj wrote:Does anyone have any idea what all those empty sockets were actually intended for?
Yes I've often wondered that too. And all the unconnected links. I wonder if maybe the same board was used for the HDFS or whether they are for clock circuitry? No idea though.
by Ottly
Fri Feb 19, 2016 11:52 pm
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

Same thing happened with the ground connector on my MDFS. The corrosion had damaged the hole enough that when I removed the battery the conductor in the hole also fell out. I just connect the ground of the battery to the ground side of the reset jumper header next to where the battery was. I'm now u...
by Ottly
Thu Feb 18, 2016 7:53 pm
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

Just looked more closely at the top photo. Can see you've hooked the LED up. Good job. I want one too now. Lol.
by Ottly
Thu Feb 18, 2016 7:50 pm
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

That looks fantastic. I hope you've hooked the HDD LED up to the LED header on the SCSI2SD board? :-)

If anyone has a spare MDFS HDD box like the one Pictured I'd happily pay for it. No hard drive required, just the empty box and a drive panel with LED like Daniel has would be awesome.
by Ottly
Thu Feb 18, 2016 2:18 am
Forum: general
Topic: Podcast episode about Acorn
Replies: 10
Views: 1539

Re: Podcast episode about Acorn

Lurkio,

Thanks for posting this link. Was interesting to listen too.

Was surprised to hear it was Australian. Being an Aussie myself I can vouch for a lot of schools having econet after econet of networks of BBCs. Weren't so popular in people's homes however.

Scott.
by Ottly
Thu Feb 11, 2016 1:43 pm
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

Fantastic, Congratulations on Resurrecting your MDFS! Enjoy.
by Ottly
Thu Feb 11, 2016 12:16 am
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

Don't panic. I had that error too. Think the !boot file may be corrupt or something. I think if you run it again it asks you if you want to replace it or skip. Just skip and I'm pretty sure it continues.
by Ottly
Wed Feb 10, 2016 1:52 am
Forum: 8-bit acorn hardware
Topic: SJ MDFS server circuit diagram/schematic
Replies: 32
Views: 4208

Re: SJ MDFS server circuit diagram/schematic

fordp wrote: Another approach maybe to emulate it on the Pi Zero with just the Econet in hardware. I could help out with this a I am looking to do most of what you need in my long term projects.
Sure happy to help where I can. I don't have a Pi so know nothing about them at this stage.
by Ottly
Mon Feb 08, 2016 3:17 pm
Forum: 8-bit acorn hardware
Topic: SJ MDFS server circuit diagram/schematic
Replies: 32
Views: 4208

Re: SJ MDFS server circuit diagram/schematic

Yeah I'd wait and see. Connect it all up and do some tests. If it doesn't work then perform the mods. As the saying goes, if it ain't broke don't fix it. ;-)

I'd do the same if I had a hard drive expansion module, completely understand.
by Ottly
Mon Feb 08, 2016 3:01 pm
Forum: 8-bit acorn hardware
Topic: SJ MDFS server circuit diagram/schematic
Replies: 32
Views: 4208

Re: SJ MDFS server circuit diagram/schematic

I've pulled my board out and had a look. This is what the mods are on my board. Mine doesn't have the parity mod. 1) IC43 PIN 10 and 11 bridged top side of board. (Original PIN 9 & 11 legs must be cut from board. IE: They cannot be connected to the board) 2) IC62 PIN 12 hook-up wire to IC43 PIN 9 3)...
by Ottly
Mon Feb 08, 2016 12:03 am
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

Now, before I start looking at getting the SCSI-SD adapter, do I need to make some mods to my MDFS? It doesn't appear to have had any of the SCSI mods made to it! Yes you may need too. I've noticed this in the FS ver 2.0 code: "WARNING: Your MDFS has not had Mod SCSI/2 fitted. This may cause data c...
by Ottly
Sun Feb 07, 2016 11:56 pm
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

One thing I wouldn't mind checking if somebody could - I replaced IC12 previously and put a socket in, but I've noticed that pins 2, 3 and 4 seem to be connected together (measuring 0 resistance between them). Is that right? IC13 which is the same chip (74HC73) has pins 2 & 3 connected together, bu...
by Ottly
Sun Feb 07, 2016 1:31 pm
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

Excellent work. When you switch it on just leave the disc free light flashing. After 30 seconds it will flash faster and start booting from the floppy and then go online. Login as SYST, pw SYST. Run the *FAST program from Library. Put key in SYSTEM position and type *FINISH within the FAST program, ...
by Ottly
Sun Feb 07, 2016 11:24 am
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

Yes it is a PC 3.5" drive. Connected to the MDFS with a PC floppy cable. Drive is connected via the straight through connector. Don't use the one after the twist as it won't work. Word of warning regarding PC 3.5" drives. I have two and one works on the MDFS the other does not. Both work fine on a P...
by Ottly
Sun Feb 07, 2016 11:12 am
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

Ok, I've just used IMGtoDISK to write the same image file I attached above to a 3.5" disk. Followed the exact same process. Formatted 3.5" disk as ADFS 800k (D). Wrote the image to the disk. Inserted 3.5" into MDFS drive and booted fine, no problems. Please note: Media used, 5.25" MD2-D (Double Dens...
by Ottly
Sun Feb 07, 2016 10:21 am
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

Ok. I've had a 3.5" working with my MDFS ok. Will boot from it and mount.

I initially made a copy of the 5.25" to the 3.5" using the MDFS. Had no problems.

I'll try writing that imagine to a 3.5" disk and see if it works.
by Ottly
Sun Feb 07, 2016 10:07 am
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

I've connected it directly to the floppy connector on the motherboard. The 3.5" is unplugged.

I can make a 3.5" if your prefer that?
by Ottly
Sun Feb 07, 2016 5:32 am
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

Hi Daniel, So I grabbed the two basic programs from MDFS.NET IMGtoDISK & DISKtoIMG. Created a image file with DISKtoIMG. I then inserted a new 5 1/4 floppy into my A3020. I had to format it first. I formatted the floppy as an ADFS 800k (D). Then used IMGtoDISK to write the image to the new floppy. S...
by Ottly
Sat Feb 06, 2016 12:55 pm
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

Daniel, I was actually thinking I could create an image and upload it here as an attachment. I'll have a play around with imgtodisk.
by Ottly
Fri Feb 05, 2016 11:06 pm
Forum: 8-bit acorn hardware
Topic: Dead MDFS Resurrection
Replies: 218
Views: 18427

Re: Dead MDFS Resurrection

Hey Daniel, have you had any luck with the MDFS floppy image? I was just thinking that if you haven't had any luck I could try making an image of mine. I have a A3020 with a 5 1/4 drive connected. What software should I use to image it?

Scott.
by Ottly
Thu Feb 04, 2016 1:40 am
Forum: 8-bit acorn software: other
Topic: 2nd processor software
Replies: 57
Views: 10379

Re: 2nd processor software

Hi All,

I have a question about Econet and the Co-Processors. Which ones support Econet access to the network? Obviously the 6502 does, but what about the Z80 (CP/M), 6809, 80186 (DOS) and others?

Assume they would need their own drivers and network software. Does any exist?

Thanks, Scott.

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