Search found 1701 matches

by steve3000
Thu Nov 16, 2017 12:54 pm
Forum: hardware
Topic: A5000 Disc Error 21
Replies: 2
Views: 61

Re: A5000 Disc Error 21

If you don't hear the usual spin up and heads engaging noise at startup then this is likely to be a failing drive, but first double check everything, especially that the cable is correctly inserted and not shifted along by one row of pins. I've had a few drives from 90s computers fail. It is possibl...
by steve3000
Sun Nov 12, 2017 9:08 am
Forum: wanted
Topic: Adapter and device that reliably produce Disc Error 23
Replies: 6
Views: 142

Re: Adapter and device that reliably produce Disc Error 23

Hi Jon, I have SD-> IDE adaptors which consistently produce disc error 23 when connected to an A5000. I don't know if they do the same on a RiscPC though (if this is what you're working on?). The adaptors all have a single IC with ST368 and/or Sintechi written on them, and are currently what you rec...
by steve3000
Mon Nov 06, 2017 12:10 am
Forum: hardware
Topic: Another A5000 restoration....
Replies: 10
Views: 359

Re: Another A5000 restoration....

Well done for getting so far! It's easy to give up on these and I know from experience they can be really frustrating at times. I repaired an A5000 with faulty floppy drive in the past, cause was IC42 in that case, but I'm sure the symptoms were different to yours. I vaguely recall the drive was det...
by steve3000
Sun Nov 05, 2017 10:13 pm
Forum: for sale / freebies
Topic: Worth Taking a Look At
Replies: 2474
Views: 173610

Re: Worth Taking a Look At

IanS wrote:
danielj wrote:That backplane looks ostensibly identical to an A5000 backplane?

d.

The connector that plugs into the motherboard is on the other side.

Also the A540 backplane, at least mine, is incredibly flimsy, flexing at the slightest pressure... Whereas my A5000 backplane is much more sturdy. :)
by steve3000
Sun Nov 05, 2017 9:39 am
Forum: hardware
Topic: Issue 1 BBC, how to tell ?
Replies: 12
Views: 274

Re: Issue 1 BBC, how to tell ?

...I have an Issue 2 Beeb . Are you counting that as one of the two issue 2's... That does ring a bell, my issue 2 is well into the fake tan category, but looks like an original model B. I know of two more issue 2's still in use, so a fair few must have made it out into the wild at the time. Love P...
by steve3000
Sun Nov 05, 2017 8:40 am
Forum: for sale / freebies
Topic: Worth Taking a Look At
Replies: 2474
Views: 173610

Re: Worth Taking a Look At

Interesting! So whoever paid out for that A540 may have an early example with possibly a pre-release version of RISC OS 2.01... (unless of course the scribbled date is American format... unlikely though) Not sure this was the driver for the high price, as RO2.01 only added the two extra VIDC clocks,...
by steve3000
Sat Nov 04, 2017 7:49 am
Forum: for sale / freebies
Topic: Worth Taking a Look At
Replies: 2474
Views: 173610

Re: Worth Taking a Look At

A well used (and fairly battered looking) 4mb A540 base unit on eBay right now - only few hours left: https://www.ebay.co.uk/itm/Acorn-Archimedes-A540/202096335398?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649 What interests me is the ROMs - labelled "FOX" and dated 8/3/90...
by steve3000
Fri Nov 03, 2017 9:52 pm
Forum: hardware
Topic: A310 - late production or relabelled A4x0/1?
Replies: 4
Views: 217

Re: A310 - late production or relabelled A4x0/1?

geraldholdsworth wrote:A similar sort of thing could have happened here (considering that the seller also has a 310 without a label on).

Good spot. Or maybe he just swapped the labels of a A4x0 with his A310...for fun?
by steve3000
Mon Oct 23, 2017 8:55 pm
Forum: hardware
Topic: A5000 IDE interface just died... what to try next?
Replies: 19
Views: 705

Re: A5000 IDE interface just died... what to try next?

There seems to be a guy on ebay selling 82C711s at the moment. I don't remember what the difference was between the '710 and the '711 though or whether the two parts are footprint-compatible. Interesting find! If you mean item #172883263746, the IC in the picture definitely isn't pin compatible (wr...
by steve3000
Sun Oct 22, 2017 11:14 pm
Forum: hardware
Topic: A5000 IDE interface just died... what to try next?
Replies: 19
Views: 705

Re: A5000 IDE interface just died... what to try next?

Well, I'm stumped. I cleaned up the PCB and looked for damage. I couldn't find anything, all the tracks looked undamaged, so today soldered the new battery in. Everything works fine battery-wise, but the it's still not noticing the IDE drive. Question - does your computer detect a floppy drive, and...
by steve3000
Fri Oct 20, 2017 8:26 pm
Forum: hardware
Topic: ICS Wizzo IDEFS for A5000/A4 (+A3020/A4000...) improves CF card support!
Replies: 61
Views: 2978

Re: ICS Wizzo IDEFS for A5000/A4 (+A3020/A4000...) improves CF card support!

sirbod wrote:The source has a 30 sec timeout for reads, so is it actually waiting 30 seconds before reporting the error?

Yes, at least 30 seconds. It felt like longer, but maybe I was impatient, or possibly it tries more than once...?
by steve3000
Thu Oct 19, 2017 10:39 pm
Forum: hardware
Topic: ICS Wizzo IDEFS for A5000/A4 (+A3020/A4000...) improves CF card support!
Replies: 61
Views: 2978

Re: ICS Wizzo IDEFS for A5000/A4 (+A3020/A4000...) improves CF card support!

:cry: Bad news Jon - I've tried tonight on my CF cards and 'new' SD->IDE adaptor under RISC OS 3.1 on my A4000 and A5000 - and both still fail to read under your modified ADFS. See pics below from my A4000, fitted with a 2Gb CF card formatted to 500Mb and confirmed working fine with Wizzo IDEFS and ...
by steve3000
Thu Oct 19, 2017 4:08 am
Forum: hardware
Topic: 10base-2 crossover?
Replies: 35
Views: 586

Re: 10base-2 crossover?

I can't do the A3010 HDD mod as it's an Adelaide not an ARM250! That doesn't stop you doing the HDD modification, in fact it should be slightly easier, as the Adelaide board pins are easier to solder onto... The important ide controller IC24 (82c711) is still present, so you 'just' need to tap into...
by steve3000
Mon Oct 16, 2017 5:35 pm
Forum: hardware
Topic: ICS Wizzo IDEFS for A5000/A4 (+A3020/A4000...) improves CF card support!
Replies: 61
Views: 2978

Re: ICS Wizzo IDEFS for A5000/A4 (+A3020/A4000...) improves CF card support!

Brilliant work Jon! I'm currently away from home, but have plenty of SD card adaptors and CF cards which fail with ADFS, so will happily spend some time testing later this week. Wizzo solved CF cards, but not the SD adaptors that I have, so it will be intesting to see how these function with your fi...
by steve3000
Sun Oct 15, 2017 2:44 pm
Forum: hardware
Topic: RISC-PC Not Working
Replies: 61
Views: 2463

Re: RISC-PC Not Working

For various reasons, I also had to make a flying CMOS chip recently in my A3010, although I didn't go as far as to replicate the clock part. Works a treat though :) _20171015_163755.JPG FYI, if you do ever have a need to rebuild the CMOS RAM circuit off the main pcb, if it's just for testing propose...
by steve3000
Sun Oct 15, 2017 1:57 pm
Forum: hardware
Topic: Solidisk 256 rehab
Replies: 6
Views: 470

Re: Solidisk 256 rehab

65C02P4 may run at 4Meg, overall speed increase maybe 10-20% depending, as rest of machine inc ram still chugging along at original speeds. Good board all the same me thinks, manager and toolkit Roms work well too. The 4meg board replaces the first 8kb of the beeb's RAM, so that this 8kb runs at 4M...
by steve3000
Wed Oct 11, 2017 8:22 pm
Forum: general
Topic: Today I received.....
Replies: 4270
Views: 235584

Re: Today I received.....

paulv wrote:My two year all clear :D

Paul

Awesome news, great to read that Paul! =D>
by steve3000
Sun Oct 08, 2017 1:39 pm
Forum: off-topic
Topic: LOLPRICE
Replies: 2661
Views: 177646

Re: LOLPRICE

The seller also added an extra bit on the item description saying that "I have been informed by another ebay user that people can get copies of the game and put them on floppy disc. I can assure anybody that this is a copy I made in 1984" ! So what makes him think his copy is worth £30.00...
by steve3000
Sun Oct 08, 2017 1:34 pm
Forum: software
Topic: IDE Iomega Zip drive - RISC PC
Replies: 8
Views: 245

Re: IDE Iomega Zip drive - RISC PC

Is the source available? It probably just needs the I/O redirecting to get working. Unfortunately no source. I started reverse engineering the Wizzo IDEFS module a few months back, but ran out of free time... I'm not sure if it would enable Zip discs on the standard Acorn interface though and it mi...
by steve3000
Sun Oct 08, 2017 7:30 am
Forum: software
Topic: IDE Iomega Zip drive - RISC PC
Replies: 8
Views: 245

Re: IDE Iomega Zip drive - RISC PC

There's another recent thread on here where I believe we concluded the compatibility issues with IDE devices (SD adapters etc) is a software issue, I think someone even resolved it by simply loading a 3rd party Module. IIRC there was also some discussion about initially booting from floppy or burni...
by steve3000
Sat Oct 07, 2017 12:07 pm
Forum: software
Topic: IDE Iomega Zip drive - RISC PC
Replies: 8
Views: 245

Re: IDE Iomega Zip drive - RISC PC

I've seen internal ZIP drives on the RiscPC using 3rd party IDE cards, but I can't recall if I've ever seen a ZIP drive connected using the Acorn IDE interface. If you've purchased !ZipFS from Partis - try contacting them(/him) as the website seems to still be active here: http://www.partis.org/acor...
by steve3000
Mon Oct 02, 2017 8:40 pm
Forum: off-topic
Topic: Pi and the Floppy Disc?
Replies: 17
Views: 574

Re: Pi and the Floppy Disc?

Are they for sale? I'd buy one! I'm sure if there was enough interest, he'd happily get some more boards made. Not sure on costs though - but that probably depends on demand. Likewise, I'd snap one up if available :) If I have time, I'd happily have a go at writing a RISC OS driver for this too, al...
by steve3000
Sun Oct 01, 2017 11:57 pm
Forum: hardware
Topic: A little mouse problem ...
Replies: 3
Views: 212

Re: A little mouse problem ...

Loose or intermittent connection of the +5v line in the cable or at the socket... The most common mouse fault on the Archie is a failing IR led, but this would fail on one axis first, and the buttons would still work. If the buttons don't work when your fault happens, then it sounds like power has b...
by steve3000
Sun Oct 01, 2017 5:36 pm
Forum: off-topic
Topic: Pi and the Floppy Disc?
Replies: 17
Views: 574

Re: Pi and the Floppy Disc?

Modern nominal USB floppy drives can't do anything other than DOS formats.. which whilst understandable is somewhat annoying. What ADFS/Filecore would see for a {Pi Floppy) is essentialy a block device accessed over a serial line. You send a command to the 'drive interface' and you get back a bit-s...
by steve3000
Sun Oct 01, 2017 12:05 pm
Forum: hardware
Topic: A540 - SCSI drive won't run !Boot until after entering and exiting desktop
Replies: 7
Views: 183

Re: A540 - SCSI drive won't run !Boot until after entering and exiting desktop

Interesting, it sounds like the drive hasn't competed initialisation? Does *devices at the supervisor prompt correctly list the attached scsi drive?
by steve3000
Sun Oct 01, 2017 7:58 am
Forum: hardware
Topic: A540 - SCSI drive won't run !Boot until after entering and exiting desktop
Replies: 7
Views: 183

Re: A540 - SCSI drive won't run !Boot until after entering and exiting desktop

What happens if you power up to supervisor, then do *dir :4, then try to catalogue the drive? Can you post the output of *status? I was thinking along the same line. Try cataloguing the drive from supervisor (with and without *Drive 4), to ensure the correct drive is selected at bootup and is ready?
by steve3000
Sun Oct 01, 2017 7:54 am
Forum: off-topic
Topic: Pi and the Floppy Disc?
Replies: 17
Views: 574

Re: Pi and the Floppy Disc?

ADFS is built into RISC OS Not on all RISC OS 5 builds. There's no floppy disc hardware on the Pi, so ADFS isn't present on the Pi builds (or it may be present but dormant?), either way it uses SDFS for the SD card. Had anyone implemented an OLD-drive (in my instance 3.5" and 5.25" to Pi ...
by steve3000
Fri Sep 29, 2017 8:56 pm
Forum: hardware
Topic: A5000 IDE interface just died... what to try next?
Replies: 19
Views: 705

Re: A5000 IDE interface just died... what to try next?

Yes - most likely battery damage related, there was quite a lot of corrosion to clean up, but it's been running fine for a long time. Two new buffer chips arrived this morning, so when I get a chance these will go in, but am very happy with the temporary fix for the moment. Soldering is always 'fun'...
by steve3000
Thu Sep 28, 2017 11:10 pm
Forum: hardware
Topic: A5000 IDE interface just died... what to try next?
Replies: 19
Views: 705

Re: A5000 IDE interface just died... what to try next?

If I get a free few minutes tomorrow I might just patch the suspect bit 12 from IC37 over to this spare gate on IC49 and see if that solves things. Patching bit12 from IC37 over to the spare gate on IC49 didn't solve the problem... :( tn_DSC_4601x.JPG However, patching bit4 on IC49 to the spare gat...
by steve3000
Thu Sep 28, 2017 10:50 pm
Forum: projects
Topic: Starting a Prince of Persia port...
Replies: 129
Views: 7774

Re: Starting a Prince of Persia port...

Great to see the progress you've made on this Kieran. I was expecting to prefer MODE 4 version, but the MODE 2 graphics really do look good and the potential for using exile-type colour dithering (and/or NULA) would make a really unique conversion.

Brilliant work!

Go to advanced search