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You're probably fine if you're using a recent version of FPE, but as long as the FPEmulator doesn't have an 'E' in its version number (*help fpemulator) then it should support hardware FPA. You will also need to turn on the FPA test in !Si, if that's what you're using, or it will not even look for i...

AndyMc1280 wrote: ↑

Wed Sep 26, 2018 11:55 am

Haven't had chance to use it in anger as there's no battery. My "jet plane" comment was regarding the noise of the Fan and HDD

Lol! It is fast too though

The Alpha variant of the A5000 had, IIRC, a 16 MHz system bus (and hence memory) clock. It needed "special" MEMC1a that worked at that speed, and I think I remember a lot of discussions about "matched" MEMC1a to get it working reliably. On the other hand, Chris' Acorn tells me that the Alpha varian...

Dead (or not) MEMC should be easy to test if you have a chip extractor tool and A5000a with MEMC socket... that said, they can be a pain to remove unless the tool is fully engaged. I'd test these first as the logic is going to be tougher to test.

Dear God it is like a jet plane. :shock: Silent fan mod and CF card in its future.... Nine one Andy, they are fast aren't they! The 66mhz oscillator is socketed too, and they overclock nicely ;) 8mb boards are fiddly in the A5000, if anything isn't pushed in fully or is a bit loose, it'll drop back...

Would that same type of fan work on an A310 as well? Thanks I think I posted on here about my A540 silent fan conversion (but struggle to find this thread from my phone). The A540 has two fans, these are each the same size as the A5000's fan, and I can recommend the fans I used (which look awfully ...

So, inspired by this thread, I started checking the power on reset circuitry. For me, C68 was saying 'no capacitance' when I tested with my capacitor tester. Ahhh, thanks for sharing! I've still not got back to my dead A5000, but it sounds like you had exactly the same symptoms! I had even looked a...

This Archimedes classic recently appeared on Android:

https://play.google.com/store/apps/deta ... Cataclysmm

As Rob says, RISC OS 3.7 and later require a mode definition file installed in your !Boot sequence to provide anything other than the minimal VGA compatible screen modes such as 640x480. The mode definition file provides RISC OS with the video timings for each screen mode resolution supported by you...

I suspect many "US converted back to UK" beebs are actually just German ones. Not sure this is correct, although the differences are small between these. US beeb PCBs were always fully populated and included the US speech chips, whereas German beebs were not typically sold fully populated and didn'...

Nice pictures :) but just a bit too dark to see all the links, any chance next time you have it open, you could take a photo of the whole PCB with all the links visible? I'm struggling to find anywhere with a picture of a US beeb PCB that clearly show the link settings... My US beeb kind-of works bu...

Hi, I'm trying to find a copy of Xenon 2 hopefully in ADF format. I've scoured the net to no avail. Does anyone know where I can obtain it please? I've not looked for this, but would have thought it should be readily available, at least the 1997 re-release, as this was given away on an Acorn User c...

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F173470973030 Buy it now: £80 plus a tenner postage. It’s got no cpu, it’s knackered with battery acid damage and the keyboard’s shot. Seems like good value! Might need some significant work to repair if CJE are selli...

Not sure if Digital Symphony is readily available now, it was commercial software BITD... I couldn't get on with this as an editor, but it was nicely done if an interesting concept and I'm sure others had more success. As I recall rather than editing 4 or 8 channels at once as a pattern, with Digita...

Just was curious if there was another tracker music program for arc other than coconizer. I can't really get on with it to be honest! Did Protracker ever come out for the Archy..... There were a few, commercial as well PD. The ones I'm aware of (for RISC OS 3.1 or earlier): Coconizer Tracker Deskto...

Good news, the command you advised to get the HD back worked, I can now see the Apps on the bottom left like I could 18 years ago :). I have also finished cleaning the motherboard and it looks a lot better now. The only things I need to fix now is the mouse. I have already opened it up, and I'd say...

I have done some cleaning with White Vinegar/half water already, but not with the toothbrush. I didn't think that sorting the IC58 area would be necessary now that I have a podule with the CMOS chip. Saying that, could I completely remove the old CMOS chip now that it's out of action? Since the upp...

Hello (and welcome to the forum! - you might want to say hello in the introductions thread). Great to hear you've rescued an A5000, hopefully things aren't as bad as you think for the hard disc. First thing to remember with these old computers is that if you fit a new CMOS RAM chip, all settings wil...

Ah, yes, an AKF60 would certainly explain the issue! :wink: But no harm done and at least you got to the bottom of it, while learning more about your A305. :D Unfortunately the AKF60 isn't great for early Archies, it was sold with the first RiscPCs, and fits better with their graphics capabilities. ...

I suspect that it is not the original PSU - it's a switched mode one (now recapped after it stank out the study). I would have thought that an Issue 2 would have still used the linear PSU. (it is both frustrating and enticing that a lot of the version history of the Beeb appears to be 'fuzzy'). Iss...

These aren't the same as CM8833, because these are multiscan and (should) accept any horizontal frequency from 15khz to 38khz. The CM8833 only accepts 15khz. The AKF65 supports the higher horizontal frequencies 25khz and above I believe, but won't work for games at 15khz... It's interesting that onl...

I followed the instructions (I'm actually using a USB IDE adapter plugged into the IDE CF adapter I use in my Arc) and it all worked first time! 512MB card formatted as 503MB, can copy files to it on the real machine. Happy days! Great you've had success :) Now two minor issues to work through - RI...

BigEd wrote: ↑

Tue Aug 07, 2018 7:20 pm

A bit later than that, I've just found the R140 from 1989 with a floating point coprocessor (at least as an option?)

Ah that's right and makes sense that it came as an option for the RISCiX computers.

First coprocessor was at launch of A440 in 1987/88 I think? It was on a podule card, with full access to address bus via the A440's podule backplane. Later Archie's didn't have this.

Both right sort of. Came in with Arm3 in 1989, and with Arm250 in 1992...

C37 going short has been cause of three dead A310's that I've repaired. It only causes the PSU to trip, so easy repair by pulling the capacitor, but good idea to change while you have everything out

Great to see you back Paul, and nice selfie!

Not sure about the effect of three years continuous use of a CUB monitor, but as Mark says, it's the switching on/off which places most stress on these, so hopefully it'll be good for many more years.

Lots of good advice there from Paul, so it's great to see you've had success! Well guess what? You were both right! The settings I'm using are as follows: sync 0 monitortype 1 mode 20 Does mode 12 display correctly too? If so, games should work without problems. And another good test would of course...

I think I've managed to piece together some information. Next to the RGB monitor connector are two "links" - LK10 and LK11. It seems that these were hardwired at the factory but could be populated with headers and then changed with standard jumper connections to allow future proofing. You don't (sh...

LCDGameModes probably won't help on the AKF50, and may make things worse as it was not intended to be used on CRT screens... But if you want to try you'll need monitortype set to 4 to try it.