Search found 229 matches

by Boydie
Thu May 23, 2019 1:07 pm
Forum: archive submissions
Topic: System Card Photos Part 1
Replies: 0
Views: 114

System Card Photos Part 1

Someone requested these some time ago.
by Boydie
Thu May 23, 2019 11:41 am
Forum: archive submissions
Topic: Atom Colour Board Circuit Diagram
Replies: 0
Views: 79

Atom Colour Board Circuit Diagram

Novelty interest only, since the scan of the official circuit diagram already exists.
This is a copy of an earlier hard-drawn draft, before it got properly formatted.
by Boydie
Thu May 23, 2019 11:23 am
Forum: archive submissions
Topic: System Technical Reference Manuals
Replies: 0
Views: 92

System Technical Reference Manuals

Acorn's Technical Reference Manuals for various System boards.
by Boydie
Thu May 23, 2019 10:06 am
Forum: archive submissions
Topic: Various Atom Documents
Replies: 1
Views: 78

Various Atom Documents

As promised, here is the Acorn app note on upgrading Atom Econets to work with BBC hardware. Along with various other Acorn Atom-related documents.
by Boydie
Tue May 21, 2019 12:49 pm
Forum: acorn atom and system
Topic: Atom Econet Adapters
Replies: 7
Views: 279

Re: Atom Econet Adapters

If you go for (5) then some of the components need to be changed for it to work on an Econet with BBCs on it.

I’ve got an Acorn app note (from before they called them app notes) that I need to get scanned in which details the changes required. Along with a load of other similar Acorn documents.
by Boydie
Mon May 20, 2019 4:20 pm
Forum: archive submissions
Topic: Z80 Winchester Utilities
Replies: 10
Views: 297

Re: Z80 Winchester Utilities

The disk image is a 200K ssd. A CPM disk is image normally 400K, it seems only side 0 is now imaged. Since there was interesting stuff at the end of the image there may be more on side 1? Any chance of imaging the original disk as a dsd 400K image? Sadly, the other side is blank. I tried imaging it...
by Boydie
Sun May 19, 2019 8:51 pm
Forum: hardware
Topic: 800K Master 512 disks on a Gotek
Replies: 3
Views: 180

Re: 800K Master 512 disks on a Gotek

Took me a while to find the hxe tools image creator but it works fine.
Many thanks!
by Boydie
Sun May 19, 2019 6:52 pm
Forum: archive submissions
Topic: Z80 Winchester Utilities
Replies: 10
Views: 297

Re: Z80 Winchester Utilities

See also:

http://mdfs.net/Software/Tube/Z80/ABC/notes

This explains how the BBC series boots from MFM discs
by Boydie
Sun May 19, 2019 6:18 pm
Forum: archive submissions
Topic: Z80 Winchester Utilities
Replies: 10
Views: 297

Re: Z80 Winchester Utilities

Sadly not. I acquired all my Z80 stuff nearly 25 years ago now and haven't used it much for about 20. So far as I can remember, I got all the Z80 software from Trintity College, Cambridge when they were selling it all off. The Winchester Utils presumably came as part of that lot. They only had Z80 s...
by Boydie
Sun May 19, 2019 11:38 am
Forum: archive submissions
Topic: DOSPlus with Econet
Replies: 1
Views: 116

DOSPlus with Econet

Acornsoft's DOS Plus with Econet Software

Disk image is ADL format, copied from original disk to Gotek. Scan of manual is included - someone cleverer than me will have to OCR it!
by Boydie
Sun May 19, 2019 10:29 am
Forum: hardware
Topic: 800K Master 512 disks on a Gotek
Replies: 3
Views: 180

800K Master 512 disks on a Gotek

I'm trying to copy my Master 512 disks onto my Gotek drive. The Acorn DOS+ disk works fine as an ADL image, and I can create new bootable 640K disks without problem. However, nothing seems to work for creating the 800K Acorn DOS images. I've tried downloaded images of the GEM disks, and formatting n...
by Boydie
Sat May 18, 2019 7:19 pm
Forum: archive submissions
Topic: Z80 Winchester Utilities
Replies: 10
Views: 297

Z80 Winchester Utilities

Don't know if this is already widely available. It's an image of Acorn's Winchester Utilities Disc for the Z80 Second Processor. It adds a virtual CP/M disc image to a hard disc, for use as Drive C, similar to DOS+ and the 512. I'm sure I had it working on a real Z80 2P hooked up to my Master back i...
by Boydie
Sun Apr 14, 2019 2:14 pm
Forum: hardware
Topic: MMFS Development and Support
Replies: 771
Views: 53743

Re: MMFS Development and Support

Does such a version exist? No, but it's easy to add. I've done a test build here: mmfs_test.zip The build you need is MMFS3.rom (which uses &FEA0 as the VIA address). Please give this a try and see if it works. Unfortunately, with these extra builds, some of the disks images are overflowing during ...
by Boydie
Sun Apr 14, 2019 12:47 pm
Forum: hardware
Topic: MMFS Development and Support
Replies: 771
Views: 53743

Re: MMFS Development and Support

I suspect there isn't a suitable build out there for what I'm trying to do... I'm running an SD card on my Master, connected to an additional VIA interface in the Econet socket. I've downloaded the approriate MMFS for this, and it works great. (The real User Port has an AMX Mouse plugged into it). U...
by Boydie
Tue Mar 26, 2019 2:09 pm
Forum: hardware
Topic: eproms
Replies: 6
Views: 287

Re: eproms

I used the guide on Retroclinic - http://www.retroclinic.com/acorn/swr/swr.htm It’s very straightforward and worked great first time. I wondered the same thing as you - how can an individual 16k rom slot be selected if all pin 1s are wired together, and all pin 27s (except those planned for use with...
by Boydie
Wed Mar 20, 2019 8:02 am
Forum: hardware
Topic: Acorn Winchester Disc 110 - Drive replacement
Replies: 2
Views: 215

Re: Acorn Winchester Disc 110 - Drive replacement

If it’s the MFM variant it should work fine. I’ve used several early Seagate 5.25 MFMs with mine, both full and half height.
Currently using a 100MB full height 5.25” Seagate. I wasn’t aware the ST506 specs went that high until I encountered this beast!
by Boydie
Tue Feb 19, 2019 2:39 pm
Forum: general
Topic: Ideas please for better beep when Second Processor is present
Replies: 34
Views: 1127

Re: Ideas please for better beep when Second Processor is present

Just noticed how this topic appears when viewed on an iPhone:

Ideas please for better beep when Second Processor is present
Last post


Surely that’s more appropriate for shutdown than startup!
by Boydie
Tue Feb 19, 2019 11:05 am
Forum: general
Topic: Ideas please for better beep when Second Processor is present
Replies: 34
Views: 1127

Re: Ideas please for better beep when Second Processor is present

Thanks for the sound commands dv8. I wonder if two or three choice notes/chords from Also Sprach Zarathustra, Op. 30 - Strauss mightn't be in order. Perhaps the two chords at 0:46... or at 1:05. I'm admit, it's more or less a ta-da! Or go the whole hog, with the most famous chords from that piece. ...
by Boydie
Sun Feb 03, 2019 10:43 am
Forum: off-topic
Topic: LOLPRICE
Replies: 2931
Views: 254493

Re: LOLPRICE

Oo, plywood and perspex.

Classy!
by Boydie
Fri Jan 18, 2019 7:21 pm
Forum: hardware
Topic: BBC Micro B - SCART INPUT VIA VCR
Replies: 7
Views: 310

Re: BBC Micro B - SCART INPUT VIA VCR

It may work. It depends largely on whether the VCR has the full SCART pinout wired up - quite a few only had composite or s-video, and nothing on the RGB inputs. However, is it worth it for the quality you'll get? UHF input was okay for the low-resolution modes, but 80-column was pretty much unreada...
by Boydie
Thu Jan 17, 2019 9:52 am
Forum: hardware
Topic: Is this normal for a Datacentre?
Replies: 4
Views: 363

Re: Is this normal for a Datacentre?

Thanks for the reassurance. I usually power the wedge before the computer anyway, but will make doubly sure now.
by Boydie
Wed Jan 16, 2019 11:21 am
Forum: hardware
Topic: Is this normal for a Datacentre?
Replies: 4
Views: 363

Is this normal for a Datacentre?

I’ve customised a defunct teletext adapter wedge as an expansion unit. It’s comfortably taken a datacentre complete with CF reader, plus a Pi 3A+ co-pro. There’s space left over for a BeebSID. Everything is powered by the 5V output from the wedge, with the link removed from the PiTube module so no p...
by Boydie
Sun Jan 13, 2019 10:32 am
Forum: hardware
Topic: BeebSID
Replies: 996
Views: 101254

Re: BeebSID

My bare board arrived yesterday (thanks GadgetUK164). Can anyone confirm whether the SWinSIDs available on Ebay work correctly with it these days? In the past, results seem to have been mixed... Are any mods required to use one? I do have a non-working C64 that I can cannibalise if needs be, but I’d...
by Boydie
Sat Dec 22, 2018 8:49 am
Forum: hardware
Topic: ARM1 versions / batches
Replies: 7
Views: 552

Re: ARM1 versions / batches

They’re VIDC1 (production Arcs used VIDC1a) in the rear-right corner and early MEMC near the ARM. Not sure if ARM1 and 2 are pin-compatible, but my A500 (ARM2) is an Issue B board. Could be that Issue A was socketed for LCC chips (ARM1) and Issue B for PLCC (ARM2)... edit: Just checked the ARM Famil...
by Boydie
Wed Dec 19, 2018 7:10 pm
Forum: hardware
Topic: ARM1 versions / batches
Replies: 7
Views: 552

Re: ARM1 versions / batches

Both mine are 8625 and Autumn as well.

Neither has a proper serial number, but one has a “51” label on the board, the other “56”. I’m guessing this was Acorn’s internal serial system. If so, it gives a minimum to the number if Arm1’s made.
by Boydie
Wed Dec 12, 2018 6:11 pm
Forum: archive submissions
Topic: Bitstik rom
Replies: 1
Views: 240

Bitstik rom

As requested by anightin, Bitstik rom version 1.0

Apologies if it's already available elsewhere
by Boydie
Mon Dec 10, 2018 7:19 pm
Forum: for sale / freebies
Topic: RISCPC 600 motherboard for sale/swap
Replies: 10
Views: 496

Re: RISCPC 600 motherboard for sale/swap

Not sure if Bitstik ever came with an actual rom. Mine (fully boxed with manual etc, so presumably as sold) came with a labelled eprom. IIRC my prestel adapter also came with a labelled eprom. Perhaps Acorn only made real roms for the stuff they expected to sell a reasonable amount of? Happy to send...
by Boydie
Tue Nov 20, 2018 6:50 pm
Forum: other vintage computer hardware, software and games
Topic: Vintage Collections
Replies: 50
Views: 2055

Re: Vintage Collections

Sadly, no.
Or an Econet/X25 gateway, which was apparently purple!
by Boydie
Tue Nov 20, 2018 3:53 pm
Forum: other vintage computer hardware, software and games
Topic: Vintage Collections
Replies: 50
Views: 2055

Re: Vintage Collections

Probably forget a few: System 3 Atom x2 BBC Model A BBC Model B x4 BBC Model B+ 128 Electron BBC Master x3 (Turbo, 512, ET) Communicator Briefcase Communicator Cambridge Workstation x2 (one 32016, one ARM1) A310 x 3 A420 A540 A500 A680 A3000 x2 A3010 A4000 A5000 A4 R140 RiscPC x2 (600 & 700) ZX81 x2...
by Boydie
Tue Oct 09, 2018 2:33 pm
Forum: off-topic
Topic: portable USB 320gb drive - format FAT32 ??
Replies: 12
Views: 643

Re: portable USB 320gb drive - format FAT32 ??

The HP USB Disk Storage Format Tool has worked for me. Apparently, it can be a bit flaky under Windows 10, but I’ve never had an issue.