Search found 3004 matches

by jgharston
Thu Apr 19, 2018 12:25 pm
Forum: hardware
Topic: DFS fault codes
Replies: 5
Views: 154

Re: DFS fault codes

by jgharston
Wed Apr 18, 2018 7:13 pm
Forum: acorn atom
Topic: Connecting a printer to the Atom
Replies: 14
Views: 251

Re: Connecting a printer to the Atom

oss003 wrote:I don't think that there are standard Atom printer cables, you have to make it yourself ...... ;)

A standard Atom printer cable is a standard BBC printer cable.
by jgharston
Wed Apr 18, 2018 7:12 pm
Forum: hardware
Topic: Printing to a Level 4 Econet Printer Server from a BBC Micro
Replies: 5
Views: 159

Re: Printing to a Level 4 Econet Printer Server from a BBC Micro

Re printing graphics from a Beeb to my network printer via Econet, I’ve not had much success so far. I’ve tried using Beebug Soft’s Dumpmaster ROM to send a screen dump from my Master to the network printer from the Beeb - I wasn’t really expecting this to work, as I couldn’t see how the ESC/P prin...
by jgharston
Wed Apr 18, 2018 6:56 pm
Forum: upcoming and recent events & exhibitions
Topic: Wakefield RISC OS show 21st April 2018
Replies: 29
Views: 1319

Re: Wakefield RISC OS show 21st April 2018

I've just booked, risking waiting to get a last minute discount. Will be there on Friday afternoon, so will be around if anybody wants to meet up for drinks, nibbles, and natting.
by jgharston
Wed Apr 18, 2018 6:55 pm
Forum: hardware
Topic: Arduino Filestore - Code now available to download
Replies: 9
Views: 420

Re: Arduino Filestore - Code now available to download

gazzaD wrote:While I'm not exhibiting at Wakefield, I've booked a hotel room for the Friday night. So you will probably find me in the hotel bar on Friday evening if you want to say hello, and discuss the vagaries of Econet and 68B54 programming :)

I've just booked in for Friday, so I'll be around as well.
by jgharston
Wed Apr 18, 2018 2:04 pm
Forum: software & utilities for the pc, mac or unix
Topic: New Disk Image Editor
Replies: 72
Views: 1803

Re: New Disk Image Editor

Alternatives include: Any alternatives must start with "what happens with existing systems". So, going back 25 years, "what happens when I use an Acorn system to copy a file from an Acorn filesystem to a DOS disk?" Which, in terms of filenames is: the filename is as close to ide...
by jgharston
Wed Apr 18, 2018 1:56 pm
Forum: software & utilities for the pc, mac or unix
Topic: New Disk Image Editor
Replies: 72
Views: 1803

Re: New Disk Image Editor

I wonder if we can create something that's backwards compatible. I wonder how many tools currently read the _second_ line of the INF file? So we could have FOO_BAR load exec Locked V2 NAME:FOO BAR v2 aware code can look for the second line and if it's V2 then read the 3rd line for NAME: then use th...
by jgharston
Wed Apr 18, 2018 1:53 pm
Forum: software & utilities for the pc, mac or unix
Topic: New Disk Image Editor
Replies: 72
Views: 1803

Re: New Disk Image Editor

Even if it made sense to put file attributes in a separate text file, it makes no sense to give that file a .INF extension, when .INF has been the extension for a completely different file format that's existed since at least 1990. Worse, Windows .INF files are frequently paired with files that hav...
by jgharston
Wed Apr 18, 2018 1:32 pm
Forum: hardware
Topic: Printing to a Level 4 Econet Printer Server from a BBC Micro
Replies: 5
Views: 159

Re: Printing to a Level 4 Econet Printer Server from a BBC Micro

The one annoying gotcha is that if the printer isn't ready, then the spoiler will pop up an error message it can't write to the file - which freezes the spooler machine until you cancel the error and clear the job. If you are running Level 4 on the same machine, then this gets annoying very quickly...
by jgharston
Wed Apr 18, 2018 1:30 pm
Forum: hardware
Topic: Printing to a Level 4 Econet Printer Server from a BBC Micro
Replies: 5
Views: 159

Re: Printing to a Level 4 Econet Printer Server from a BBC Micro

Is there an equivalent to *IGNORE on a Beeb? One can use *FX6,X, where X is a character value to ignore, but there seems not be a specific way of asking a Beeb to send all characters to the printer, but perhaps someone knows a way of achieving this? *FX6,0 (shortenable to *FX6) is adequate for text...
by jgharston
Tue Apr 17, 2018 12:44 am
Forum: hardware
Topic: Arduino Filestore - Code now available to download
Replies: 9
Views: 420

Re: Arduino Filestore - Code now available to download

BTW, the reason I'm doing a check to see if a user is logged on as part of each function is because a couple of operations (like get server time) don't need to be logged on. I recognise that there is room for code to be refactored here, and would welcome anyone elses contribution to fix the things ...
by jgharston
Tue Apr 17, 2018 12:30 am
Forum: software: classic games
Topic: Looking for an Evolution type simulation
Replies: 6
Views: 205

Re: Looking for an Evolution type simulation

There's also Grass Gobbler and Blind Watchman: http://mdfs.net/Apps/Automata/
by jgharston
Fri Apr 13, 2018 11:16 am
Forum: hardware
Topic: External keyboard for an Acorn Electron.
Replies: 9
Views: 554

Re: External keyboard for an Acorn Electron.

myelin wrote:Alternatively if you have a spare SmallyMouse2 board, it should be possible to program this using the extension connector there.

Oo, that's a good idea. I'll investigate that.
by jgharston
Fri Apr 13, 2018 11:15 am
Forum: hardware
Topic: Master level shifter for PiTube Direct won't fit with VideoNuLA
Replies: 25
Views: 733

Re: Master level shifter for PiTube Direct won't fit with VideoNuLA

I managed to get ... (SmallyMouse2) inside the case Oo, that's an interesting gap near the front left. I have stuff at both sides of my Master and that's been stopping me putting my DataCentre inside as there'd be nowhere I could put the USB socket. But that might be an option. And I really don't l...
by jgharston
Fri Apr 13, 2018 11:08 am
Forum: hardware
Topic: Unknown Sideways RAM / ROM adapter
Replies: 7
Views: 337

Re: Unknown Sideways RAM / ROM adapter

Most one-socket sideways RAMs didn't go to the lengths of using a PCB, they just stuck one 8K SRAM on top of another, with an invertor on top of that, like in this (fairly fuzzy) picture:
Image

Sideways ROM/RAM utils on JGH Disk 6.
by jgharston
Tue Apr 10, 2018 4:23 pm
Forum: programming
Topic: Keyboard Buffer
Replies: 6
Views: 205

Re: Keyboard Buffer

Keycodes. Eg *FX138,0,145 will put Shift-f1 in the keyboard buffer, *FX138,0,32 will put SPACE in the keyboard buffer. No need to disassemble the MOS, just check the manual. I often needs to pull things out of the command line for my utility programs and the the characters are always in readable ASC...
by jgharston
Tue Apr 10, 2018 4:21 pm
Forum: programming
Topic: Acorn files on other platforms
Replies: 38
Views: 1217

Re: Acorn files on other platforms

Besides, if metadata was left as .INF files in the ZIP, the RISC OS client would have to deal with that. A reasonable client would likely hide the .INF files anyway as part of that handling! Thinking about it, I'd argue that putting .INF files in the Zip file is actually a superior solution, becaus...
by jgharston
Tue Apr 10, 2018 4:00 pm
Forum: hardware
Topic: External keyboard for an Acorn Electron.
Replies: 9
Views: 554

Re: External keyboard for an Acorn Electron.

A useful ability/option would be pure ASCII output so it could be used as a keyboard for System, Atom, Apple, UK101, my Spectrum keyboard extension.... :) Again, there are various PS/2-to-ASCII convertors, but most of them give the wrong codes for, eg, cursors and function keys, and nothing for USB...
by jgharston
Tue Apr 10, 2018 3:42 pm
Forum: software & utilities for the pc, mac or unix
Topic: New Disk Image Editor
Replies: 72
Views: 1803

Re: New Disk Image Editor

I haven't had chance to get any programming stuff done for a bit, but yesterday found time to check UnImg and fix a couple of bugs and build some test environments. I don't have my source code with me, so it's patched together a bit, but any code that extracts files from a disk image should match it...
by jgharston
Fri Apr 06, 2018 3:54 pm
Forum: software & utilities for the pc, mac or unix
Topic: New Disk Image Editor
Replies: 72
Views: 1803

Re: New Disk Image Editor

[*]One request has been for Atom images, and I am sure this is possible. However, I have never used an Atom, even in emulation, and I would need to familiarize myself with it so that I could try the results out - I wouldn't trust my work to be bug-free without testing!! The only difference with Ato...
by jgharston
Fri Apr 06, 2018 3:48 pm
Forum: software & utilities for the pc, mac or unix
Topic: New Disk Image Editor
Replies: 72
Views: 1803

Re: New Disk Image Editor

A quick dashing visit. You do drag'n'drop and checking for .inf sidecar files like this. This is BBC BASIC, it should be simple enough to translate to your language of choice. See link for source and demo pre-compiled Windows binary. REM > DropFiles REM Demo drag'n'drop in Windows REM R.T.Russell wi...
by jgharston
Tue Apr 03, 2018 10:20 am
Forum: hardware
Topic: External keyboard for an Acorn Electron.
Replies: 9
Views: 554

Re: External keyboard for an Acorn Electron.

More recently, I've done it for a BBC Master using a microcontroller and a CPLD , and have a PCB design in progress that'll support the Model B as well and allow connecting a USB keyboard. Ooo, exactly the sort of thing I've been searching for for some time. There's loads of projects out there for ...
by jgharston
Tue Apr 03, 2018 10:11 am
Forum: off-topic
Topic: Bank Holiday
Replies: 25
Views: 590

Re: Bank Holiday

Due to the very high dose of antibiotics I'm taking I can't even face chocolate :shock: I feel for you. I had pre-op tests this morning, and the one thing I can't face is needles, and I'm still woozy from all the precious life fluids they extracted from me, plus having to get up at half past dawn t...
by jgharston
Tue Apr 03, 2018 4:39 am
Forum: programming
Topic: Acorn files on other platforms
Replies: 38
Views: 1217

Re: Acorn files on other platforms

I couldn't get to sleep, so I've been rewriting the filename/pathname pages on the Wiki.
by jgharston
Tue Apr 03, 2018 4:37 am
Forum: general
Topic: New BeebWiki articles
Replies: 35
Views: 5237

Re: New BeebWiki articles

The following articles in the BeebWiki were recently updated: * MODE * MODE &60 * Address of a variable * Service calls * OSBYTE &AD * OSBYTE &AC * OSBYTE &CA * OSBYTE &FF * FSCV * OSBYTE &00 * OSWORD &10 * Immediate operations http://beebwiki.mdfs.net/
by jgharston
Tue Apr 03, 2018 3:27 am
Forum: programming
Topic: Acorn files on other platforms
Replies: 38
Views: 1217

Re: Acorn files on other platforms

Hmm. What tools support a 256Kbyte DFS image, though? It won't fit on a disc; can you make a .ssd file that big and have it work? Yes*. MkImg will make a disk image up to the maximum possible that the filesystem supports. And you can make any sized blank image manually with ch%=OPENOUT(filename$): ...
by jgharston
Tue Apr 03, 2018 3:01 am
Forum: hardware
Topic: Arduino Filestore - Code now available to download
Replies: 9
Views: 420

Re: Arduino Filestore - Code now available to download

I thought the RISC OS NetFS hacked the choice of library itself? Yes. ANFS 4.xx does: if OPT 5,1 set, do *FindLib which can then set a specific library. ANFS 5.xx does: if Configure ArthurLib set, do: select the drive % is on, if $.ArthurLib exists, set the library to it I added an option to SoftMD...
by jgharston
Mon Apr 02, 2018 11:13 pm
Forum: hardware
Topic: Arduino Filestore - Code now available to download
Replies: 9
Views: 420

Re: Arduino Filestore - Code now available to download

All the if (usrHdl==-1){ fsError(0xBF,F("Who are you?"),txPort); return; can be move up one level to the calling code. Not essential, but a useful thing for *I AM to do is to ping the client and keep a note of the machine type. You can then use this later for, eg, giving RISC OS clients 32...
by jgharston
Mon Apr 02, 2018 10:38 pm
Forum: hardware
Topic: Printing from the BBC Model B
Replies: 15
Views: 474

Re: Printing from the BBC Model B

I've got some test code working printing via the DataCentre USB port, but I'm currently hung up with a problem of "seeing" through a USB hub - needed in order to be more useful than just being able to plug one thing in! My *USBDevices command successfully enumerates everything on the other...
by jgharston
Mon Apr 02, 2018 10:20 pm
Forum: programming
Topic: Acorn files on other platforms
Replies: 38
Views: 1217

Re: Acorn files on other platforms

By my current understanding: (table) Not quite right. DFS uses 18-bit disk sizes, so multiplied by the sector size, the filesystem limit is 256K, not 200K. 200K is the maximum you can fit on a physical media formatted to 80 tracks. Many disk/drive combinations can format up to 82 tracks, so even on...