Search found 2292 matches

by sweh
Thu Nov 26, 2020 12:14 am
Forum: 8-bit acorn hardware
Topic: Cassette colour cables
Replies: 4
Views: 170

Re: Cassette colour cables

There's no standard colouring for cables. 1 cable will be for motor control and is a 2.5mm plug. 1 cable will be for loading data and is a 3.5mm plug; it'll be plugged into headphone or Aux or similar. 1 cable will be for saving data and is also a 3.5mm plug; it'll be plugged into mic or similar. Wh...
by sweh
Fri Nov 20, 2020 1:21 pm
Forum: off-topic
Topic: Non-TLS sites
Replies: 2
Views: 153

Non-TLS sites

I've noticed a few images being displayed on this site as being broken (in some signatures, some in messages etc) so I looked into it a little. An example of is the "retroclinic" signature: bad_icon.png These appear mostly to be because the image is being pulled from a non-TLS site (http://foo.bar i...
by sweh
Thu Nov 19, 2020 2:27 am
Forum: 8-bit acorn hardware
Topic: EPROM and EEPROM Compatibility
Replies: 29
Views: 576

Re: EPROM and EEPROM Compatibility

Oh, that's a totally different IFEL board to the one I have! https://sweh.spuddy.org/Beeb/Ram_Rom/
by sweh
Thu Nov 19, 2020 2:10 am
Forum: 8-bit acorn hardware
Topic: EPROM and EEPROM Compatibility
Replies: 29
Views: 576

Re: EPROM and EEPROM Compatibility

On my tinker Beeb I use one of the battery-backed IFEL RAM/ROM boards which I love, but I've been looking for something that would be compatible with my USA export Beeb. Doesn't the IFEL board fit? The ROM slots _look_ equivalent to the standard Beeb, just located in a different place. Or is there ...
by sweh
Mon Nov 16, 2020 1:22 pm
Forum: other events + general event chat
Topic: mdfs.net maintainance
Replies: 21
Views: 850

Re: mdfs.net maintainance

Ahhh..trapping the break vector and reading the OS message might be an idea. (I've got some horrid code for reading the NFS/ANFS version number which does *HELP NET and traps OSWRCH and puts the message in a memory block instead of on screen so I can pick it up from there. I tried doing something s...
by sweh
Sun Nov 15, 2020 9:42 pm
Forum: 8-bit acorn hardware
Topic: Any Acorn repairists?
Replies: 9
Views: 416

Re: Any Acorn repairists?

I have a whole stash of 5.25" discs and cassettes. They've been kept in their original sleeves and boxes, inside a plastic box, inside a plastic box in a loft. I am going to need to clean these before attempting to revive them? e.g. wind and rewind tapes, rotate discs by hand Be careful of disc mol...
by sweh
Sat Nov 14, 2020 9:09 pm
Forum: general
Topic: DOS vs UNIX Line Endings
Replies: 21
Views: 474

Re: DOS vs UNIX Line Endings

I use use the `tr` command:

Code: Select all

tr '\012' '\015' < unixfile > beebfile
tr '\015' '\012' < beebfile > unixfile
by sweh
Fri Nov 13, 2020 3:47 pm
Forum: 8-bit acorn hardware
Topic: A potentially dumb Gotek question
Replies: 16
Views: 817

Re: A potentially dumb Gotek question

This is an example of all the files on my test stick. They all live in the root directory Afile.foo.img Elite_FSD0022_1.hfe FF.CFG IMAGE_A.CFG IMG.CFG Mr_EE.ssd games3.stldsdd.img "foo.img" is an example of a "concattenated" DSD (mrEe side 1, Transitor's Revenge side 2). "hfe" is an example HFE file...
by sweh
Thu Nov 12, 2020 8:26 pm
Forum: general
Topic: Willem eprom programmer power supply
Replies: 13
Views: 312

Re: Willem eprom programmer power supply

jms2 wrote:
Thu Nov 12, 2020 1:58 pm
and then the 7805 fell off altogether.

So I think this may be the issue!
:lol:
by sweh
Thu Nov 12, 2020 12:35 am
Forum: 8-bit acorn software: other
Topic: MMFS Version 2
Replies: 368
Views: 2712

Re: SD card without the MMB file (aka MMFS2)

@sweh: MMB_Utils -concat option would be handy OK, done. The README now says: * merge_dsd Will take two SSD image and interleave them into a single DSD image If the -concat option is used then it assumes the DSD is two SSDs stacked after each other (side0 then side 2). Without this option it assume...
by sweh
Thu Nov 12, 2020 12:06 am
Forum: 8-bit acorn software: other
Topic: MMFS Version 2
Replies: 368
Views: 2712

Re: SD card without the MMB file (aka MMFS2)

I just used MMB_Utils split command to successfully extract the files on the Tube Elite source code disk for a friend on another board. However something does seem strange. If I do beeb info foo.dsd it shows me capacity 200KB and the files on side one (only). This is a 400KB .DSD ... how do I see s...
by sweh
Wed Nov 11, 2020 11:57 pm
Forum: 8-bit acorn software: other
Topic: MMFS Version 2
Replies: 368
Views: 2712

Re: SD card without the MMB file (aka MMFS2)

Bobbi wrote:
Wed Nov 11, 2020 11:51 pm
Is there any standard anywhere which says how the sectors should be laid out in the .DSD file?
Not really, no. I can add a "-concat" option to the split/merge commands if that'd help.
by sweh
Wed Nov 11, 2020 11:56 pm
Forum: 8-bit acorn software: other
Topic: MMFS Version 2
Replies: 368
Views: 2712

Re: SD card without the MMB file (aka MMFS2)

fdsplit and fdcombine at: https://github.com/SteveFosdick/Utils enable splitting and combining SSD/DSD images. I believe Hoglet also has a version in Java. My perl utils also have split_dsd and merge_dsd commands. eg looking at BookOfListingsPart1-3169.dsd from bbcmicro.co.uk we can see it's an int...
by sweh
Wed Nov 11, 2020 9:07 pm
Forum: general
Topic: Willem eprom programmer power supply
Replies: 13
Views: 312

Re: Willem eprom programmer power supply

Which model Willem do you have? Mine is a v5 board.

FWIW, the EPROMs I've successfully programmed are AM27128A which has Vpp 12.5V. Maybe you have older chips that require 21V?
by sweh
Wed Nov 11, 2020 6:54 pm
Forum: general
Topic: Willem eprom programmer power supply
Replies: 13
Views: 312

Re: Willem eprom programmer power supply

Depends on the 27128; I program mine via USB power with no problems
by sweh
Wed Nov 11, 2020 2:18 am
Forum: 8-bit acorn software: other
Topic: MMFS Version 2
Replies: 368
Views: 2712

Re: SD card without the MMB file (aka MMFS2)

[*]Finesse the automatic handling of .SSD and .DSD extensions. Ideally it should try one and if not found then the other. I don't think that is too bad to do. [*]Fix the silly quirk where one has to append a trailing period when changing directories with *DDIR (assuming your directories don't have ...
by sweh
Mon Nov 09, 2020 11:51 pm
Forum: off-topic
Topic: Received bad news last week
Replies: 20
Views: 537

Re: Received bad news last week

My dad died November, 3 years ago. It didn't really hit me until the service.

My condolences.
by sweh
Mon Nov 09, 2020 11:35 pm
Forum: 8-bit acorn software: other
Topic: [SOLVED] Help me understand what's going on here - !BOOT
Replies: 4
Views: 396

Re: Help me understand what's going on here - !BOOT

So the...corruption is the wrong word but I don't know what else to call it...in the directory listing after the !BOOT moves page down to &E00 is because that has trampled over the memory DFS had allocated..? Yes. The default directory with DFS is '$'. You can see this in your first picture (Dir. :...
by sweh
Mon Nov 09, 2020 11:23 pm
Forum: off-topic
Topic: Powering a Pi4 while using USB OTG
Replies: 6
Views: 227

Re: Powering a Pi4 while using USB OTG

I thought there was some driver or hardware problem in the Pi4 with the USB-C that meant it didn't work properly? With some "special" cables (primarily those designed for USB-C Thunderbolt) the Pi is misidentified as an audio adapter and won't attempt to send power. That's 'cos those cables have ch...
by sweh
Mon Nov 09, 2020 11:20 pm
Forum: off-topic
Topic: Powering a Pi4 while using USB OTG
Replies: 6
Views: 227

Re: Powering a Pi4 while using USB OTG

You'd need to connect the ground to the PC and the power brick. The data lines need ground as a reference. See if that fixes it.. Oh, I thought the +/- nature of the lines meant they were balanced so didn't need a common ground. I'll try that; thanks! And, indeed when I connected the ground it just...
by sweh
Mon Nov 09, 2020 3:47 pm
Forum: off-topic
Topic: Powering a Pi4 while using USB OTG
Replies: 6
Views: 227

Re: Powering a Pi4 while using USB OTG

cmorley wrote:
Mon Nov 09, 2020 6:18 am
You'd need to connect the ground to the PC and the power brick. The data lines need ground as a reference. See if that fixes it..
Oh, I thought the +/- nature of the lines meant they were balanced so didn't need a common ground. I'll try that; thanks!
by sweh
Mon Nov 09, 2020 12:12 am
Forum: off-topic
Topic: Powering a Pi4 while using USB OTG
Replies: 6
Views: 227

Powering a Pi4 while using USB OTG

So a Pi 4 allows for the USB-C port to be used as USB On The Go. So, for example, if can be used as a HID device to send keystrokes or mouse movement. The problem is the USB-C port is also how the Pi4 is powered, and most PC USB ports can't provide the 2A or so required. So the machine keeps crying ...
by sweh
Sun Nov 08, 2020 10:47 pm
Forum: 8-bit acorn hardware
Topic: Quick look over this BBC B
Replies: 4
Views: 254

Re: Quick look over this BBC B

Looks a pretty standard machine with the floppy disk controller added. There may be a floppy drive up in the loft to go with it. The machine has had work done on it, in the past. The red sockets are a dead give away. The motherboard will also have been removed from the case at some point to enable t...
by sweh
Sun Nov 08, 2020 8:29 pm
Forum: 8-bit acorn software: other
Topic: MMFS Version 2
Replies: 368
Views: 2712

Re: SD card without the MMB file (aka MMFS2)

Maybe you could persist a status file to the MMC card itself (\DDRIVE.CFG) so *DIN can update that. Potentially this could also be used to persist state across reboots, or even move state between machines (remove card from machine A, put in into machine B, CTRL-BREAK and your drives are remounted).
by sweh
Sun Nov 08, 2020 8:22 pm
Forum: 8-bit acorn software: other
Topic: MMFS Version 2
Replies: 368
Views: 2712

Re: MMFS Version 2

I guess this also means if I have a _directory_ called foo.ssd then "*ddir foo" would match :D So, I can't understand why you would want to try to switch (DOS) Directories to an SSD. You wouldn't. I just spotted a quirk of the change that was made. If you did "MKDIR foo.ssd" in DOS, to create a dir...
by sweh
Sun Nov 08, 2020 2:49 am
Forum: 8-bit acorn software: other
Topic: MMFS Version 2
Replies: 368
Views: 2712

Re: MMFS Version 2

I guess this also means if I have a _directory_ called foo.ssd then "*ddir foo" would match :D
by sweh
Thu Nov 05, 2020 1:20 am
Forum: development tools
Topic: BeebAsm
Replies: 125
Views: 16323

Re: BeebAsm

I'm willing to be proved wrong, but I don't think so. However, macros may meet the requirement, depending, MACRO CONSTANT_NAME EQUS "FOOBAR" ENDMACRO ORG &1900 .start CONSTANT_NAME .end Off the top of my head, I can't think of a scenario where a string isn't used in an EQUS so the macro may suffice.
by sweh
Mon Nov 02, 2020 5:03 pm
Forum: software & utilities for the pc, mac or unix
Topic: MMBExplorer released!
Replies: 42
Views: 3244

Re: MMBExplorer released!

That's great, good job! I was wondering if it would be possible to load more than one image disk at the same time. For example, to load 100 .SSD files starting by the slot 0. This can be useful if do you only want to test several images on the Acorn Electron because actually to do this is necessary...
by sweh
Sat Oct 31, 2020 12:58 pm
Forum: off-topic
Topic: RIP Sean Connery, aged 90
Replies: 3
Views: 344

RIP Sean Connery, aged 90

zardoz-12.jpg
by sweh
Wed Oct 28, 2020 11:03 pm
Forum: 8-bit acorn hardware
Topic: ANF03 and ALF03 - Deck Difference?
Replies: 8
Views: 337

Re: ANF03 and ALF03 - Deck Difference?

As acorndave noted, that small belt goes to the counter. But if you look behind the belt then you can see a series of cogs, so it looks more like a direct-drive system.

I could be wrong, of course :-)

Go to advanced search