Search found 627 matches

by Kazzie
Mon Apr 22, 2019 10:45 am
Forum: software
Topic: Notate (Nodiant) missing PLAT file, and Extra Voices Disc
Replies: 1
Views: 43

Notate (Nodiant) missing PLAT file, and Extra Voices Disc

I've been working on salvaging a copy of Nodiant (Welsh translation of Logotron's Notate) from a pair of floppy discs. The second disc, labelled "Notate Extra Voices" seems to be a gonner (it reads as unformatted), but I got the contents of the first disc onto my hard drive pretty much intact. When ...
by Kazzie
Mon Apr 22, 2019 10:25 am
Forum: archive submissions
Topic: Logotron Logo - Welsh version
Replies: 9
Views: 692

Re: Logotron Logo - Welsh version

On reflection, there would have been a disc-based version of this software as well. I have distinct memories of using it on a number of Archimedes machines in primary school.
by Kazzie
Sun Apr 21, 2019 9:00 pm
Forum: hardware
Topic: What's going on with the A4x0/1's serial port?
Replies: 9
Views: 144

Re: What's going on with the A4x0/1's serial port?

Well, that was nice and easy.

Linking pins 1 and 4 (DCD and DTR) on the DE9 (Acorn) end was enough to get Connector talking to the EPP (when using the Internal-PC driver). Now if I can persuade it to transfer an Intel Hex file over... :)
by Kazzie
Sun Apr 21, 2019 7:10 pm
Forum: hardware
Topic: What's going on with the A4x0/1's serial port?
Replies: 9
Views: 144

Re: What's going on with the A4x0/1's serial port?

Having gotten home, I've opened up the ART EPP programmer, and the cable I'd made for connecting it to a PC. The EPP only populates pins 1-7 of a DB25 connector, which keeps things simple. For the sake of posterity (and/or if I need to rebuild a PC cable again) here's how I had wired it up originall...
by Kazzie
Sun Apr 21, 2019 5:10 pm
Forum: upcoming and recent events & exhibitions
Topic: Wakefield RISC OS show 27/4/19
Replies: 90
Views: 2691

Re: Wakefield RISC OS show 27/4/19

I'll bring said tapes with me, and whoever has any gear with them, is more than welcome to try and see what's on them. I think thier data, but I don't own any kind of tape deck, hifi or otherwise to check them, so they could be 80's radio/pop mixes or some crap like that :-) I found a bunch of tape...
by Kazzie
Sun Apr 21, 2019 5:04 pm
Forum: hardware
Topic: What's going on with the A4x0/1's serial port?
Replies: 9
Views: 144

Re: What's going on with the A4x0/1's serial port?

I think there was a SerialUtils module that got distributed with most boot systems that more standardised the functionality of the serial port - that could be why you're not seeing any problems. I've never had any problems with serial comms between A5000 or A480 and Master, PC or Spectrum. The !Con...
by Kazzie
Sun Apr 21, 2019 4:54 pm
Forum: hardware
Topic: What's going on with the A4x0/1's serial port?
Replies: 9
Views: 144

Re: What's going on with the A4x0/1's serial port?

Please note that there never was a universal standard for connecting two computers together using a RS232 serial connection. And that's part of what makes life fun! I had to take a few attempts at getting my BBC-PC cable working in the first place (due to mistakes in wiring the domino end, as it tu...
by Kazzie
Sun Apr 21, 2019 12:22 pm
Forum: off-topic
Topic: Blinged up BBCs
Replies: 20
Views: 605

Re: Blinged up BBCs

https://stardot.org.uk/forums/download/file.php?id=45557&mode=view As this Beeb is on the dark side, is it Kylo Ren’s Beeb? And is it more kryoflux compatible than a standard Beeb? :lol: Mark If the function keys were orange, I'd say yes. :wink: "Kyl Oren" would be the Welsh for "Orange Kyl". Havin...
by Kazzie
Sun Apr 21, 2019 11:04 am
Forum: hardware
Topic: What's going on with the A4x0/1's serial port?
Replies: 9
Views: 144

What's going on with the A4x0/1's serial port?

First a spot of background on what I'm trying to do: I wanted to burn an EPROM, but couldn't find the power supply for the old laptop with serial port I kept for operating the antediluvian ART EPP programmer. "No problem", I thought, "there's a serial port on my A420/1 Archimedes that I can use inst...
by Kazzie
Fri Apr 19, 2019 10:04 pm
Forum: hardware
Topic: Deaf Acorn Electron not loading tapes etc
Replies: 17
Views: 369

Re: Deaf Acorn Electron not loading tapes etc

Do you hear the click of a relay engaging when you start to load from (or save to) a cassette?

If you type in a (any) short program and save it, are you able to hear the output (either playing the cassette through a hi-fi/walkman, or connecting the Electron directly to a loudspeaker)?
by Kazzie
Fri Apr 19, 2019 7:51 pm
Forum: archive submissions
Topic: Logotron Logo - Welsh version
Replies: 9
Views: 692

Re: Logotron Logo - Welsh version

Mae hynny'n wych, diolch. =D> :D Croeso. :) There are a few more updates above, but I've just cracked this wide open having worked out the equivalent of PRIMITIVES, it's CYSEFINION, a plural of CYSEFIN. (I'm more used to using "cysefin" for "prime" as in prime numbers, but it is sometimes used in t...
by Kazzie
Fri Apr 19, 2019 1:13 pm
Forum: archive submissions
Topic: Logotron Logo - Welsh version
Replies: 9
Views: 692

Re: Logotron Logo - Welsh version

Welsh Logo Primitives Cysefinion Logo Cymraeg AND is AC ASCII is unchanged ARCTAN is unchanged BACK (BK) is YNOL (OL) BF is OC (ond cyntaf) BG is CD (cefndir) BL is OO (ond olaf) .CALL is .GALW CHAR is NOD CLEAN is GLANHA .CONTENTS is .CYNNWYS COS is unchanged COUNT is CYFRI CS is GS (glanhau sgrin...
by Kazzie
Fri Apr 19, 2019 1:12 pm
Forum: archive submissions
Topic: Logotron Logo - Welsh version
Replies: 9
Views: 692

Re: Logotron Logo - Welsh version

This is was my first introduction to programming, so it's been a bit of a nostalgia trip loading this up on my Beeb. :mrgreen: Some of the commands came flowing back to me immediately, but others were more advanced ones that I never would have used in primary school. A bit of trial-and-error guesswo...
by Kazzie
Fri Apr 19, 2019 11:27 am
Forum: hardware
Topic: How did the Beeb use the /SO pin when selecting ROMs?
Replies: 10
Views: 284

Re: How did the Beeb use the /SO pin when selecting ROMs?

Thanks for the various replies, particularly noting that the diodes went missing long before the service manual suggested. It seems their function is as mysterious as the /SO pin that they're connected to. I don't suppose any owners of an Issue 2 board would care to open 'er up and look to see if t...
by Kazzie
Thu Apr 18, 2019 6:25 pm
Forum: hardware
Topic: Logo ROM playing up. Needs replacing?
Replies: 10
Views: 248

Re: Logo ROM playing up. Needs replacing?

If I remember correctly it was the Logotron version. I think I have seen a disc with the ROM image on it somewhere but please don't ask where - I have thousands, literally! I know I have used the program. It was fun working out the commands. That'd make sense, as they also translated some Archimede...
by Kazzie
Thu Apr 18, 2019 5:29 pm
Forum: hardware
Topic: How did the Beeb use the /SO pin when selecting ROMs?
Replies: 10
Views: 284

Re: How did the Beeb use the /SO pin when selecting ROMs?

Thanks for the various replies, particularly noting that the diodes went missing long before the service manual suggested. It seems their function is as mysterious as the /SO pin that they're connected to. I don't suppose any owners of an Issue 2 board would care to open 'er up and look to see if th...
by Kazzie
Thu Apr 18, 2019 9:52 am
Forum: hardware
Topic: Logo ROM playing up. Needs replacing?
Replies: 10
Views: 248

Re: Logo ROM playing up. Needs replacing?

Other than the number of chips used, what differences are there between the implementations of Logo? There is a fairly comprehensive article in Acorn User issue 34 (May 1985) comparing the different implementations. Perfect, thanks. This leaves me wondering which version of Logo it was that Gwynedd...
by Kazzie
Thu Apr 18, 2019 9:18 am
Forum: hardware
Topic: How did the Beeb use the /SO pin when selecting ROMs?
Replies: 10
Views: 284

How did the Beeb use the /SO pin when selecting ROMs?

In the (undated) circuit diagram submitted to 8bs by Chris Richardson, there are two diodes (D4 and D5) leading from outputs QC and QD of ROM selection latch IC76 to the 6502's Set Overflow (/SO) pin (pin 38. romsel-so.png As I read things, that means that if the software were to request a ROM other...
by Kazzie
Wed Apr 17, 2019 9:43 pm
Forum: general
Topic: Bit of fun - One change only
Replies: 82
Views: 2519

Re: Bit of fun - One change only

For the original BBC B: Perhaps it would have made more sense for 1) the tube connector to be internal: making 2nd processors cheaper by not requiring a cheese box case with own PSU 2) bring the lines for extra sideways ram/rom to be brought out on an IDC connector(PCB male 'socket') in its place: ...
by Kazzie
Wed Apr 17, 2019 9:25 pm
Forum: hardware
Topic: Colured text all modes (Yellow)
Replies: 4
Views: 166

Re: Colured text all modes (Yellow)

That makes things a little easier. (Do you have any test equipment to help you measure what's going on in your Beeb (multimeter, oscilloscope, etc)?) Firstly, are you happy that your cable is in good condition? A continuity test from pin 3 of the RGB connector to the relevant pin on the other end wo...
by Kazzie
Wed Apr 17, 2019 8:59 pm
Forum: hardware
Topic: Another BBC B Needs Fixing.
Replies: 20
Views: 484

Re: Another BBC B Needs Fixing.

Given that everything works with S25 south, I'd expect it's still a RAM issue. You could have had two faulty RAM chips: one blatantly so, and another with a more subtle fault (e.g. writing to address X also overwrites address Y) that isn't being picked up by a write/read memory test. Could you post ...
by Kazzie
Wed Apr 17, 2019 7:22 pm
Forum: hardware
Topic: Colured text all modes (Yellow)
Replies: 4
Views: 166

Re: Colured text all modes (Yellow)

With additive colours (red, green blue), red plus green would give you yellow. Or to put it another way, the absence of blue would turn things yellow.

What video output are you using: RGB, Composite or UHF?
by Kazzie
Wed Apr 17, 2019 7:16 pm
Forum: hardware
Topic: Logo ROM playing up. Needs replacing?
Replies: 10
Views: 248

Re: Logo ROM playing up. Needs replacing?

That looks more like Acornsoft Logo which was supplied on two ROMs. The behaviour you are seeing is what happens when ROM 1 is missing or corrupted. Hm... I presumed it was Logotron. :roll: And, come to think of it, there is one unidentified ROM chip on the expansion board (which isn't reported by ...
by Kazzie
Wed Apr 17, 2019 12:49 pm
Forum: hardware
Topic: Logo ROM playing up. Needs replacing?
Replies: 10
Views: 248

Logo ROM playing up. Needs replacing?

The (original) Logotron Logo ROM in my Beeb is playing up. Typing *LOGO doesn't bring up the Logo interface any more. Instead I get: >*LOGO LOGO 2 _ The Beeb has switched language successfully, as when I press break I'm greeted with: BBC Computer Acorn DFS LOGO 2 Bad command_ A Ctrl-break switches b...
by Kazzie
Wed Apr 17, 2019 6:33 am
Forum: hardware
Topic: Last Gasp for the 8271
Replies: 12
Views: 410

Re: Last Gasp for the 8271

I'll be wanting an 8271 for my System clone, and would be happy to join in with a bulk order.

(I had planned on fitting a 1770 to my Beeb and cascading the 8271, but the Vine Replay that it's fitted with is 8271-only.)
by Kazzie
Mon Apr 15, 2019 5:16 am
Forum: acorn atom and system
Topic: Using PC Floppy Drives ?
Replies: 6
Views: 195

Re: Using PC Floppy Drives ?

So effectively "quad" density was a marketing term where as single, double and high actually describe the density of the data on the disk. Yeah, I should have made sure to includes some "air quotes" there... :oops: If you have a little time, you can read all the Beeb-relevant info and facts behind ...
by Kazzie
Sun Apr 14, 2019 6:38 pm
Forum: acorn atom and system
Topic: Using PC Floppy Drives ?
Replies: 6
Views: 195

Re: Using PC Floppy Drives ?

I've just noticed something else that will cause issues, the GFR version of the Teac FD55 is a 1.2MB, High Density floppy drive. (80-track drives outside the PC world are Quad Density, 40-track are Single/Double Density.) HD 5 1/4" floppies rotate at a different speed to DD and QD ones, 360rpm inste...
by Kazzie
Sun Apr 14, 2019 5:49 pm
Forum: acorn atom and system
Topic: Using PC Floppy Drives ?
Replies: 6
Views: 195

Re: Using PC Floppy Drives ?

Is the Teac just set up as an 80-track only drive, or have you got something double-stepping it when you want to read 40-track discs? If not, it's quite reasonable for the Teac to only read files from track 0 on a 40-track floppy, as it's the only track that's in the same physical place for both typ...
by Kazzie
Sun Apr 14, 2019 5:30 pm
Forum: hardware
Topic: The sound of BBC graphics!
Replies: 12
Views: 428

Re: The sound of BBC graphics!

Apparently the CPC464 made different noises depending on how busy the CPU was.
by Kazzie
Sun Apr 14, 2019 7:27 am
Forum: acorn atom and system
Topic: Faulty um233 rf modulator
Replies: 9
Views: 157

Re: Faulty um233 rf modulator

Nicely done.

If all you have is a hammer... :D