Search found 3306 matches

by BeebMaster
Mon Jul 06, 2020 1:32 pm
Forum: 8-bit acorn hardware
Topic: 8271 disc controller craziness -- do not try this at home!
Replies: 30
Views: 1107

Re: 8271 disc controller craziness -- do not try this at home!

Am I donating the 8271? What happens next?
by BeebMaster
Mon Jul 06, 2020 11:42 am
Forum: 8-bit acorn hardware
Topic: TOP 5 interest of the RASP PI CO PRO ?
Replies: 64
Views: 1332

Re: TOP 5 interest of the RASP PI CO PRO ?

Availability may also be a factor: you can't always get Pi Zero but other models are easier to find.
by BeebMaster
Mon Jul 06, 2020 10:57 am
Forum: 8-bit acorn hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1210
Views: 142372

Re: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)

I wonder if the tube_delay setting referred to above needs a bit of a nudge? Not sure why it would, but it's probably worth a try. Although PiTube Direct is very much more tolerant of cable length than actual cheese wedge second processors, I'd still be tempted to reduce it a bit if possible. A few ...
by BeebMaster
Mon Jul 06, 2020 12:17 am
Forum: 8-bit acorn software: other
Topic: File transfer problem - DOS -> ADFS - Master 128
Replies: 13
Views: 279

Re: File transfer problem - DOS -> ADFS - Master 128

I knocked this up to clear the "E" attribute...it's a bit rough and ready, and involves a bit of faff because you have to work out the file with E attribute's holding directory's parent directory so that you can examine that directory to get the location on the disc of the holding directory, and edi...
by BeebMaster
Sun Jul 05, 2020 8:29 pm
Forum: 8-bit acorn software: other
Topic: File transfer problem - DOS -> ADFS - Master 128
Replies: 13
Views: 279

Re: File transfer problem - DOS -> ADFS - Master 128

Hi Beebmaster Ahh, thankyou, that almost worked, *MOVE did indeed copy the file to the ADFS drive however it also for some reason set the attributes to RWEL and I cannot remove that E attribute without removing the file. (that said, the CP/M driver doesn't seem to care if it's +E or not, but ADFS m...
by BeebMaster
Sun Jul 05, 2020 1:57 pm
Forum: 8-bit acorn software: other
Topic: File transfer problem - DOS -> ADFS - Master 128
Replies: 13
Views: 279

Re: File transfer problem - DOS -> ADFS - Master 128

Remember that if you have a hard drive active the floppy drive numbers increase by 4, so 0-3 are ADFS hard drives, 4 is floppy drive 0, 5 is floppy drive 1. In ADFS you can always refer to the floppy drives as 4 & 5 whether there's a hard disc controller active or not. *MOVE in the Master MOS might ...
by BeebMaster
Sat Jul 04, 2020 11:36 pm
Forum: for sale / freebies
Topic: Econet Socket Hubs and Terminators
Replies: 14
Views: 297

Re: Econet Socket Hubs and Terminators

The RJ45 sockets arrived today, earlier than I was anticipating, so I'm ready to go with the RJ45 option Hubs and Terminators. I've tested all the completed Hubs I've built so far and they've all worked fine. I also linked in a J Flynn socket box with the Blundell RJ45 standard and that worked as we...
by BeebMaster
Sat Jul 04, 2020 11:52 am
Forum: for sale / freebies
Topic: Econet Socket Hubs and Terminators
Replies: 14
Views: 297

Re: Econet Socket Hubs and Terminators

Yes, we did that. My Phil Blundell boards aren't here, so I can't test but I am going to test with Jason's ones which I believe use the same pinout.
by BeebMaster
Sat Jul 04, 2020 11:31 am
Forum: for sale / freebies
Topic: Econet Socket Hubs and Terminators
Replies: 14
Views: 297

Re: Econet Socket Hubs and Terminators

Yes, that's it. Any DIN socket can be used for any computer with Econet interface. This is how the sockets are laid out on the board: ----J1----J2---- | | J8 J3 | | J7 J4 | | ----J6----J5---- Laying it out end to end with terminators would in theory look like: Terminator Terminator | | J1-------J8--...
by BeebMaster
Sat Jul 04, 2020 10:47 am
Forum: for sale / freebies
Topic: Econet Socket Hubs and Terminators
Replies: 14
Views: 297

Re: Econet Socket Hubs and Terminators

All the sockets in the Hubs are daisy chained together, so it's a like a line of cable with DIN sockets spliced along it. Although the Hub makes it look like a "circle" it should still be thought of as a line of sockets requiring termination at either end. In the setup you have, I'd connect up the C...
by BeebMaster
Fri Jul 03, 2020 11:59 pm
Forum: 8-bit acorn hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1210
Views: 142372

Re: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)

It does sound like the cable length is the problem. Do you have a different cable you can try, or shorten it by moving the header? Or can you fit the Pi Tube under the Master (even if temporarily for testing)?
by BeebMaster
Fri Jul 03, 2020 10:35 pm
Forum: 8-bit acorn hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1210
Views: 142372

Re: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)

That sounds like BASIC copying itself from ROM (in the Master) to co-pro RAM (in the Pi) isn't completing. Sometimes you get that effect after a soft reset, even with a real 6502 cheese wedge, but a Ctrl-BREAK normally solves it. It could be a bad Tube connection or faulty or very long cable. I don'...
by BeebMaster
Fri Jul 03, 2020 10:15 pm
Forum: for sale / freebies
Topic: Econet Socket Hubs and Terminators
Replies: 14
Views: 297

Econet Socket Hubs and Terminators

I'm delighted to announce new Econet Socket Hub and Terminator boards. These have been designed and manufactured by Ken Lowe and are being assembled & supplied by me. The Econet Socket Hub has space for 6 Econet stations, and two further sockets for expanding to additional hubs or adding to exising ...
by BeebMaster
Fri Jul 03, 2020 9:39 pm
Forum: 8-bit acorn hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1210
Views: 142372

Re: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)

After you get the * prompt will *BASIC load BASIC successfully?
by BeebMaster
Fri Jul 03, 2020 5:43 pm
Forum: for sale / freebies
Topic: FS: USB "POST box" adaptors (for debugging Archimedes / Risc PC systems that don't boot)
Replies: 27
Views: 629

Re: FS: USB "POST box" adaptors (for debugging Archimedes / Risc PC systems that don't boot)

Think I'd better wait for Rev 2, since I'm still reeling from blowing up an external HDD's SATA controller the other week by feeding it incorrect polarity...

Where's the Third Doctor when you need him!
by BeebMaster
Fri Jul 03, 2020 4:26 pm
Forum: archive requests
Topic: Acorn Level 4 Fileserver Issue 3
Replies: 45
Views: 1262

Re: Acorn Level 4 Fileserver Issue 3

It looks, then, like the "RISC PC Econet interface doesn't work in a file server" problem has been solved, and that Acorn knew about it for 8 years before the RPC came out! As far I can recall, my own Econet NIC hasn't been used in a machine running the L4 file server, so as it also has the HCT 123,...
by BeebMaster
Fri Jul 03, 2020 12:31 pm
Forum: archive requests
Topic: Acorn Level 4 Fileserver Issue 3
Replies: 45
Views: 1262

Re: Acorn Level 4 Fileserver Issue 3

Just looking at my A4 Econet interfaces...shocking pictures, and the original camera images from 2003 and 2009 aren't any better: First one, serial number 322, clearly(ish) showing LS123 at IC2. http://www.beebmaster.co.uk/Econet/Pics/A4Econet2big.jpg Second one, but earlier serial number 142. It's ...
by BeebMaster
Thu Jul 02, 2020 7:53 pm
Forum: archive requests
Topic: Acorn Level 4 Fileserver Issue 3
Replies: 45
Views: 1262

Re: Acorn Level 4 Fileserver Issue 3

Interesting...so it's looking like the change from 74LS123 to 74HCT123 on the RISC PC Econet card is causing a timing issue resulting in lost transmissions? Meaning that mine possibly doesn't work properly (it's currently in the A7000 which isn't here)! There's another thing I might be able to do. I...
by BeebMaster
Wed Jul 01, 2020 2:59 pm
Forum: archive requests
Topic: Acorn Level 4 Fileserver Issue 3
Replies: 45
Views: 1262

Re: Acorn Level 4 Fileserver Issue 3

I'm not sure this is the answer after all. I've done some testing with NetMon. Here's some communication between two Masters - Station 114 (&72) is the user station, 200 (&C8) the file server. Station 114 communicates with the file server on port &99, requests reply on port &90, and the file server ...
by BeebMaster
Wed Jul 01, 2020 10:13 am
Forum: 8-bit acorn hardware
Topic: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)
Replies: 1210
Views: 142372

Re: Pi-based Co-Pro on the cheap - 100MHz 6502 for £10? (now 274MHz)

Yes indeed, although it loses BASIC on BREAK and has to be reloaded again, sometimes causing a Bad program. On the Native ARM co-pro I use ARM BASIC v 1.35 which I load at &1800000 exec at &180012C, so it's higher than HIMEM at &100000. Also I can do *KEY10 *GO 180012C|M to bring it back without rel...
by BeebMaster
Tue Jun 30, 2020 8:28 pm
Forum: archive requests
Topic: Acorn Level 4 Fileserver Issue 3
Replies: 45
Views: 1262

Re: Acorn Level 4 Fileserver Issue 3

From the Econet Advanced User Guide pp32-33: EAUGp32.png EAUGp33.png The Netmon log looks to me like it is showing that the user station is correctly communicating with the file server on port &99, but the user station is asking the file server to respond on the wrong ports. The user station should ...
by BeebMaster
Tue Jun 30, 2020 10:50 am
Forum: 8-bit acorn hardware
Topic: Gotek Flashfloppy not recognising blank ADFS discs?
Replies: 14
Views: 948

Re: Gotek Flashfloppy not recognising blank ADFS discs?

I don't think I understand...does this Flash Floppy thing assume that any disc image it is given is laid out head 0 track 0, head 1 track 0, head 0 track, head 1 track 1 etc. and there's no way to tell it otherwise? Seems an unfortunate assumption creating needless disc image manipulation given that...
by BeebMaster
Mon Jun 29, 2020 2:16 pm
Forum: archive requests
Topic: Acorn Level 4 Fileserver Issue 3
Replies: 45
Views: 1262

Re: Acorn Level 4 Fileserver Issue 3

Another idea reading some earlier posts...make sure the net number and station number of the file server is set correctly on the user station. If the file server is station 123 do *FS 0.123 on the user station. Sometimes omitting the net number (0, meaning local net) can result in a junk number bein...
by BeebMaster
Mon Jun 29, 2020 2:06 pm
Forum: acorn atom and acorn system series
Topic: Atom delivery by Hermes
Replies: 18
Views: 454

Re: Atom delivery by Hermes

Well in an unpleasant way that answers a question I've long wondered, "what happens when a delivery driver needs to do a puddle?" (as Barbara Woodhouse would say)! When I book through Hermes it's a 72p supplement for a home collection rather than dump-it-in-the-back-room-of-the-local-offy, so the dr...
by BeebMaster
Mon Jun 29, 2020 1:57 pm
Forum: 32-bit acorn software: other
Topic: Acorn Virus in the early 90’s
Replies: 7
Views: 431

Re: Acorn Virus in the early 90’s

I remember seeing at the Wakefield charity stand a few years back a disc or CD which had a warning label saying this software is infected with such-a-virus, but it's harmless. I thought it was Icon or Extend, can't remember now.
by BeebMaster
Mon Jun 29, 2020 1:52 pm
Forum: off-topic
Topic: Retro Hardware Inventory Management
Replies: 1
Views: 199

Re: Retro Hardware Inventory Management

Crumbs, that sounds very high tech. I did talk to Zarchos at the January ABug (or maybe the previous November's one) about "inventory management". I have 50+ plastic storage boxes in a self-storage place, and I moved rooms in October to a smaller one at the same site because I put up shelving to sta...
by BeebMaster
Sun Jun 28, 2020 9:42 pm
Forum: 8-bit acorn software: other
Topic: Writing a service rom - it's not recognized
Replies: 21
Views: 713

Re: Writing a service rom - it's not recognized

The Acorn symbol doesn't look to be a standard defined character according to the Electron User Guide. Maybe it defines it temporarily during the start-up banner and sets it back to blank afterwards?
by BeebMaster
Sun Jun 28, 2020 9:30 pm
Forum: 8-bit acorn software: other
Topic: Writing a service rom - it's not recognized
Replies: 21
Views: 713

Re: Writing a service rom - it's not recognized

Is the Acorn symbol part of the Electron font? If so you can find its character code by copying it after PRINTASC(" followed by ") whilst it's on screen and then use that ASCII value in your start-up message if a hard reset is detected. I suppose you could also redefine it to look like a Wi-Fi symbo...
by BeebMaster
Sun Jun 28, 2020 7:32 pm
Forum: archive requests
Topic: Acorn Level 4 Fileserver Issue 3
Replies: 45
Views: 1262

Re: Acorn Level 4 Fileserver Issue 3

Here's a read-out of the module versions I have, including some which aren't Econet specific which I know were troublesome (because they were missing or old versions) when I first started with L4 FS:
scrn1.png

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