Search found 1407 matches

by IanS
Wed Jul 15, 2020 1:45 pm
Forum: archive submissions
Topic: Mysterious "lost" game or weird hoax?: The SIGMA Experiment (1983?)
Replies: 54
Views: 2615

Re: Mysterious "lost" game or weird hoax?: The SIGMA Experiment (1983?)

Naomasa298 wrote:
Wed Jul 15, 2020 1:30 pm
No "I" in "Lee David Newsome" though. Maybe it's "I, Lee David Newsome". Or "Lee David Newsome I".
Do you want to re-check that?
by IanS
Tue Jul 14, 2020 10:50 pm
Forum: 32-bit acorn software: other
Topic: The Hidden Fifth Column: Integrating Wizzo with RISC OS 3.11
Replies: 22
Views: 1405

Re: The Hidden Fifth Column: Integrating Wizzo with RISC OS 3.11

What OS is this expected to work on? Yoiks. It was most recently tweaked for Select (back in '02 !) I've just tested this on Select 3i4 (4.39), 3.71, and 3.10 all on real hardware -- no issues on any. Did you do anything in particular before this exploded so violently? It's a fairly trivial bit of ...
by IanS
Tue Jul 14, 2020 10:33 pm
Forum: 32-bit acorn hardware
Topic: A540 (or R260) 4MB card
Replies: 32
Views: 2263

Re: A540 (or R260) 4MB card

Short version - they don't work in slot 2. Long(er) version (I'm numbering the card slots as 1, 2 and 3, so slot 0 is effectively the on-board ram and MEMC) Steve and I have done lots of testing with lots of combinations of cards and MEMC chips. If I fit 3 of my cards in my A540, and run my test cod...
by IanS
Tue Jul 14, 2020 4:49 pm
Forum: 32-bit acorn software: other
Topic: The Hidden Fifth Column: Integrating Wizzo with RISC OS 3.11
Replies: 22
Views: 1405

Re: The Hidden Fifth Column: Integrating Wizzo with RISC OS 3.11

IanJeffray wrote:
Tue Jul 14, 2020 4:26 pm
I also wrote a simple RISC OS utility a very long time ago, to create modules that contain ResourceFS files, just as Phil suggested. http://ian.jeffray.co.uk/riscos/resrom114.zip
What OS is this expected to work on?
Didn't seem happy on 3.71 in RPCemu.
by IanS
Tue Jul 14, 2020 1:00 pm
Forum: 32-bit acorn software: other
Topic: The Hidden Fifth Column: Integrating Wizzo with RISC OS 3.11
Replies: 22
Views: 1405

Re: The Hidden Fifth Column: Integrating Wizzo with RISC OS 3.11

Having gone digging further, am I right in saying: Some machines (A5000?) have an extra socket on the motherboard for fitting an extension ROM The clever thing here is using extra-large ROMs (on boards that have large enough sockets) to put an extension ROM alongside the regular RISC OS ROM This me...
by IanS
Mon Jul 13, 2020 5:14 pm
Forum: 32-bit acorn hardware
Topic: EcoSCSI - Unused connectors
Replies: 1
Views: 205

Re: EcoSCSI - Unused connectors

I always assumed the extra connector was just enough signals for a SCSI connection, so it could be wired up with fewer wires without using 50-way ribbon cable. Probably just an option that never got used/implemented.
by IanS
Sun Jul 12, 2020 9:11 pm
Forum: 32-bit acorn hardware
Topic: A3020 red screen
Replies: 17
Views: 611

Re: A3020 red screen

if i turn it off and on, teh same red screen with flashing light, unless i do another power on delete, then i get the message again. The configuration is stored in battery-backed ram (in the RTC chip). So without a battery (and working RTC) you will have to hold down delete every time you power the...
by IanS
Sun Jul 12, 2020 6:01 pm
Forum: 32-bit acorn hardware
Topic: A3020 red screen
Replies: 17
Views: 611

Re: A3020 red screen

It's not about number of flashes, it's the length of the flashes. Acorn RISC computer fault codes are reported via the flashing of the floppy drive light in a sequence of 8 blocks of 4 flashes. Each block of four flashes (e.g. long short short long) represents a set of fault and status bits which ca...
by IanS
Sun Jul 12, 2020 5:18 pm
Forum: 32-bit acorn hardware
Topic: A3020 red screen
Replies: 17
Views: 611

Re: A3020 red screen

Have you done a delete power-on reset. Hold delete, power on, wait till the desktop appears (can take a minute or so)

Is the floppy drive light flashing?

https://www.retro-kit.co.uk/page.cfm/co ... re-errors/
(use the decoder on the right side of the page)
by IanS
Sun Jul 12, 2020 4:18 pm
Forum: 32-bit acorn hardware
Topic: Repair thread: A310
Replies: 10
Views: 558

Re: Repair thread: A310

Create an Obey file called !Boot on the floppy (start !Edit, middle click, Create -> Obey -- save as !Boot, drag to floppy icon): Run <Obey$Dir>.!EcoSCSI.!Run I'd probably load the nodules with seperate rmload commands, and set the system variable to the fitted SCSI drive. The default !Run scans al...
by IanS
Sat Jul 11, 2020 11:03 pm
Forum: 32-bit acorn hardware
Topic: Repair thread: A310
Replies: 10
Views: 558

Re: Repair thread: A310

Bingo, we're in. 8) Excellent, good to know it worked. Have you got a backup of the hard disk, it's done well to survive this long, but it could die at any point. Was there a copy of the EcoSCSI utils on the HD?, were they the same version? Can you not create a bootable floppy that loads the module...
by IanS
Sat Jul 11, 2020 12:09 pm
Forum: 32-bit acorn hardware
Topic: RISC PC motherboard refurbish
Replies: 13
Views: 602

Re: RISC PC motherboard refurbish

sP1d3r wrote:
Sat Jul 11, 2020 5:20 am
The motherboard is in prime condition so using long-nose pliers I twisted the capacitors round until they came off, without ripping the solder pads off, because the PCB is robust and has complete coverage of ground plane.
:shock: :o
by IanS
Sat Jul 11, 2020 12:01 pm
Forum: 32-bit acorn hardware
Topic: Mounting a floppy drive in an A310
Replies: 15
Views: 695

Re: Mounting a floppy drive in an A310

Yes, very interesting, 1.27mm pitch headers are still available (even in surface mount). Who'll be first to try?
by IanS
Sat Jul 11, 2020 11:40 am
Forum: 32-bit acorn hardware
Topic: Mounting a floppy drive in an A310
Replies: 15
Views: 695

Re: Mounting a floppy drive in an A310

Marvin wrote:
Sat Jul 11, 2020 11:25 am
No idea, there are no clues on the PCBs, the text on my board is the same as the ones in the links you posted.
Thanks for looking.
by IanS
Fri Jul 10, 2020 9:26 pm
Forum: 32-bit acorn hardware
Topic: Repair thread: A310
Replies: 10
Views: 558

Re: Repair thread: A310

I don't suppose anyone out there has the modules required to kick this EcoSCSI / Floptical SCSI interface into life? I'll be able to connect the drive up to another SCSI controller, but this interface card will be a bit of a white elephant without its software. (As a last gasp, perhaps a forum memb...
by IanS
Fri Jul 10, 2020 8:53 pm
Forum: 32-bit acorn hardware
Topic: Repair thread: A310
Replies: 10
Views: 558

Re: Repair thread: A310

Very bare bones. 1MB (i guess), no backplane, RISC OS 2. The EcoSCSI cards work suprisingly well, though I've never tried it on RISC OS 2. I'll dig mine out, be interesting to see if the software versions are the same. What's the target? RISC OS 3, ARM3, 8MB, backplane, IDE/SCSI, Colourcard. I can h...
by IanS
Fri Jul 10, 2020 4:30 pm
Forum: 32-bit acorn hardware
Topic: Mounting a floppy drive in an A310
Replies: 15
Views: 695

Re: Mounting a floppy drive in an A310

That bracket mounts to the bridge over the motherboard with 2 screws that are on an offset, botton left & top right in this image (the top left hole is one of the two that is used to mount either a second floppy or a hard disc) A310 floppy mounting.JPG Curious, do you know who manfactured the ARM3 ...
by IanS
Fri Jul 10, 2020 2:13 pm
Forum: 32-bit acorn hardware
Topic: The Watford Gap
Replies: 34
Views: 1587

Re: The Watford Gap

The way I've powered my Dual CF Card Interface is to uses what's supported on some cards (but not mine as I've has had to add a small jumper) and that's by using pin 20 to carry power from an IDE Interface to the CF Card Interface - nice and tidy :mrgreen: My podules supply power on pin 20, but on ...
by IanS
Thu Jul 09, 2020 9:46 pm
Forum: 32-bit acorn hardware
Topic: Mounting a floppy drive in an A310
Replies: 15
Views: 695

Re: Mounting a floppy drive in an A310

I appear to have the bracket pictured in the digram, but it only appears to have two screw holes to connect to the drive itself Aside from the issue of finding a FDD that will work with the 1772 and all the other interesting stuff I see on the A300 / A3000 schematic, it looks like the FDD is mounte...
by IanS
Thu Jul 09, 2020 9:35 pm
Forum: 32-bit acorn hardware
Topic: The Watford Gap
Replies: 34
Views: 1587

Re: The Watford Gap

Just as an update on this, I give up. I've tested the thing on umpteen machines, RISC OS 2 and 3, and it does the same shit every time. I've tried it with different CF cards, different CF card interfaces, and with different physical drives too now - all the same result. No idea why the hell it work...
by IanS
Thu Jul 09, 2020 4:22 pm
Forum: for sale / freebies
Topic: Worth Taking a Look At
Replies: 2884
Views: 344352

Re: Worth Taking a Look At

sP1d3r wrote:
Thu Jul 09, 2020 3:59 pm
One of the disks has the folder unixhost - is this for iX?
Only in as far as it's a unix host - doesn't have to work with iX - http://chrisacorns.computinghistory.org ... lSuite.pdf
by IanS
Thu Jul 09, 2020 3:42 pm
Forum: for sale / freebies
Topic: Worth Taking a Look At
Replies: 2884
Views: 344352

Re: Worth Taking a Look At

sP1d3r wrote:
Thu Jul 09, 2020 3:35 pm
https://www.ebay.co.uk/itm/Acorn-RISCiX ... SwEWVfAw1O

Seller has other RISCiX items. :-&
Including an R260. I don't this specifc item is RIsCiX related, just looks like the standard RIC OS TCP/IP suite.
by IanS
Tue Jul 07, 2020 8:36 am
Forum: 32-bit acorn hardware
Topic: Serial to ethernet adaptor (?) - Free for someone to play with!
Replies: 6
Views: 428

Re: Serial to ethernet adaptor (?) - Free for someone to play with!

Haha, yes. That's nothing to do with serial, but old-school "thick net" (10base5) networking. You've got a thick-net to thin-net (10base2) MAU. Thick-net was "fun". You would apply a vampire tap to the main cable. You _had_ to place it at specific places on the cable (the cable had marks on it) and...
by IanS
Mon Jul 06, 2020 3:03 pm
Forum: 32-bit acorn hardware
Topic: Upgrading VRAM 1MB->2MB
Replies: 25
Views: 1763

Re: Upgrading VRAM 1MB->2MB

danielj wrote:
Mon Jul 06, 2020 2:48 pm
Evidently this discussion has been monetised... Not convinced by the soldering job, mind...

https://www.ebay.co.uk/itm/303577253501
That listing pre-dates this dicussion. I mentioned it on the 1st June.
by IanS
Sun Jul 05, 2020 8:59 pm
Forum: for sale / freebies
Topic: VideoNuLA boards
Replies: 158
Views: 28384

Re: VideoNuLA boards

dhester wrote:
Sun Jul 05, 2020 8:38 pm
I've sent a pm and paid via paypal. But Not sure if PM has got to you as it appears to be stuck in my outbox.
Items stay in your outbox until read by the recipient.
by IanS
Sat Jul 04, 2020 10:36 pm
Forum: 32-bit acorn hardware
Topic: R260 - missing CPU card?
Replies: 30
Views: 1649

Re: R260 - missing CPU card?

That looks like the right keyboard to me? Looks like the keyboard that came with my A540. I guess the RISCiX models could have been different, but seems unlikely. Matches the picture in the brochure - http://chrisacorns.computinghistory.org.uk/docs/Acorn/Brochures/Acorn_APP480_R260.pdf edit: actual...
by IanS
Sat Jul 04, 2020 10:29 pm
Forum: 32-bit acorn hardware
Topic: R260 - missing CPU card?
Replies: 30
Views: 1649

Re: R260 - missing CPU card?

More weirdness :
I have been reliably informed that this is the wrong keyboard for this machine.
It is NOT the original keyboard and is no longer included on the sale.
I will be listing another keyboard shortly.
by IanS
Sat Jul 04, 2020 7:50 pm
Forum: 32-bit acorn hardware
Topic: The Watford Gap
Replies: 34
Views: 1587

Re: The Watford Gap

iomanoid wrote:
Sat Jul 04, 2020 7:40 pm
Does anyone here want it for a tenner shipped (bearing in mind the postage is £4.10)? Otherwise it'll be part of a "buggered archimedes things" eBay auction I'll be sticking up soon.
Yes, please, I'll PM you.
by IanS
Sat Jul 04, 2020 1:23 pm
Forum: for sale / freebies
Topic: Econet Socket Hubs and Terminators
Replies: 16
Views: 797

Re: Econet Socket Hubs and Terminators

Is the RJ45 pinout compatible with the "blundell" standard? Can you enlighten me? I have some structured cabling in the house that I would use, are standard ethernet patch cables not suitable? The mapping of Econet clock and data pairs onto RJ45 cabling can be done in many ways. The first sockets t...

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