Search found 1037 matches

by IanS
Mon Nov 11, 2019 2:52 pm
Forum: general
Topic: Seeking information on Archie the Archimedes bear
Replies: 3
Views: 79

Re: Seeking information on Archie the Archimedes bear

I never had one, but I think I remember the order sheet for them. I do have an Acorn umbrella, but it's a bit grubby in places as it spent a few decades rolling round the boot of my car.
by IanS
Sun Nov 10, 2019 8:21 pm
Forum: hardware
Topic: Joystick interfaces
Replies: 5
Views: 106

Re: Joystick interfaces

hubersn wrote:
Sun Nov 10, 2019 8:17 pm
How many buttons did the A3010 interface support?
From the curcuit diagram, the joystick ports only support 5 inputs, so only 1 fire button per port.
by IanS
Sat Nov 09, 2019 3:05 pm
Forum: emulators
Topic: Arculator v2.0 released!
Replies: 7
Views: 321

Re: Arculator v2.0 released!

Windows zip file appears broken. testing: Arculator.exe OK file #335: bad zipfile offset (local header sig): 5511057 file #336: bad zipfile offset (local header sig): 5514217 file #337: bad zipfile offset (local header sig): 5731920 file #338: bad zipfile offset (local header sig): 6109668 testing: ...
by IanS
Thu Nov 07, 2019 8:39 pm
Forum: hardware
Topic: PS/2 keyboard & mouse to Archimedes adapter MK II
Replies: 33
Views: 5201

Re: PS/2 keyboard & mouse to Archimedes adapter MK II

I think disabling timeouts will make it more likely for hangups to occur waiting for a response that never happens. I'll have to wire up the logic analyser to see the difference in behaviour between the converter and a real keyboard but that may take some time as I'm in the middle of something else...
by IanS
Wed Nov 06, 2019 10:07 pm
Forum: hardware
Topic: PS/2 keyboard & mouse to Archimedes adapter MK II
Replies: 33
Views: 5201

Re: PS/2 keyboard & mouse to Archimedes adapter MK II

I found a possible problem where the protocol error flag wasn't being cleared on a restart which would cause an infinite loop. I fixed that so can you test this version: ARC2PS2 test version.zip I haven't tested it myself but if it works I'll upload an official release with source. Note the error/d...
by IanS
Wed Nov 06, 2019 9:06 pm
Forum: hardware
Topic: PS/2 keyboard & mouse to Archimedes adapter MK II
Replies: 33
Views: 5201

Re: PS/2 keyboard & mouse to Archimedes adapter MK II

Two leds means an error occurred with the Archimedes side of the protocol and if the mouse freezes then maybe interrupts are disabled during recording which would cause such a protocol error as there would be no reply from the Archimedes to any new mouse movement packets. This would cause the PIC t...
by IanS
Tue Nov 05, 2019 7:25 pm
Forum: hardware
Topic: PS/2 keyboard & mouse to Archimedes adapter MK II
Replies: 33
Views: 5201

Re: PS/2 keyboard & mouse to Archimedes adapter MK II

As you can see here the !Sonar software causes the keyboard adapter to crash when clicking record. https://stardot.org.uk/forums/viewtopic.php?f=16&t=18182&p=252809#p252809 On a real Arc keyboard the mouse freezes during recording, but then moves again after the recording has finished. With the PS/2...
by IanS
Tue Nov 05, 2019 7:24 pm
Forum: hardware
Topic: VerticalTwist MIDI/Sampler Econet Interface Pinout
Replies: 7
Views: 263

Re: VerticalTwist MIDI/Sampler Econet Interface Pinout

My hardware also passes the self-test, which is good.

hoji was kind enough to send me a copy of the software, which I've attached here.

(I have an alternative reason for posting the software, one of the applications cause the PS/2 to Arc keyboard adapter to crash, which is odd)
by IanS
Sun Nov 03, 2019 10:13 pm
Forum: hardware
Topic: PS/2 keyboard & mouse to Archimedes adapter MK II
Replies: 33
Views: 5201

Re: PS/2 keyboard & mouse to Archimedes adapter MK II

IanB wrote:
Sun Nov 03, 2019 9:44 pm
Here's V0.17 with the mouse button bug fixed:
That works, Thank you.
by IanS
Sun Nov 03, 2019 7:47 pm
Forum: hardware
Topic: A4000 PSU and 386 Podule
Replies: 5
Views: 159

Re: A4000 PSU and 386 Podule

The A4000 power connector is the same type as a standard 5.25 hard disc, but it uses all 4 pins for different voltages or ground. Can you find a hard disc power adapter cable and cut the 5V line to measure the current with everything running, it wil probablt be ok for a few minutes of testing. Or us...
by IanS
Sun Nov 03, 2019 10:42 am
Forum: hardware
Topic: VerticalTwist MIDI/Sampler Econet Interface Pinout
Replies: 7
Views: 263

Re: VerticalTwist MIDI/Sampler Econet Interface Pinout?

I also have one of these (without the cable), so would be interested in the software. MIDI is a 5mA current loop, and the input is normally opto-isolated. See the examples - https://learn.sparkfun.com/tutorials/midi-tutorial/hardware--electronic-implementation So I traced my board, and this is what ...
by IanS
Sat Nov 02, 2019 11:55 pm
Forum: hardware
Topic: PS/2 keyboard & mouse to Archimedes adapter MK II
Replies: 33
Views: 5201

Re: PS/2 keyboard & mouse to Archimedes adapter MK II

I'm not sure what the Reset link for the mode selection on the original PCB does to pin 4. Is it pulled high/low or open circuit. Does it need pulling high or low to change mode? The "reset" line is just used as a normal input port in this design, actual power on reset relies on internal timeconsta...
by IanS
Sat Nov 02, 2019 6:29 pm
Forum: hardware
Topic: A4000 PSU and 386 Podule
Replies: 5
Views: 159

Re: A4000 PSU and 386 Podule

The mini-podule connector doesn't have +12 (or -12) on it, so you only need to worry about the +5V rail. Do you have an A3000 you could put the podule in, and measure the current on the +5V cable with and without it fitted to get an idea of the current consumption. The podule spec describes how much...
by IanS
Fri Nov 01, 2019 10:41 pm
Forum: software
Topic: !FTPc triggering system hang? (+ serial TCP/IP on A3000)
Replies: 16
Views: 647

Re: !FTPc triggering system hang?

Thanks, Ian. It turns out it wasn't my Uniboot settings at all! Your copy of !FTPc works just fine with what I had before and indeed with your minimal installation. Excellent news, more and more stuff is not really checked that it still works on 3.11. I try and stick with what works, and only upgra...
by IanS
Thu Oct 31, 2019 10:11 pm
Forum: software
Topic: !FTPc triggering system hang? (+ serial TCP/IP on A3000)
Replies: 16
Views: 647

Re: !FTPc triggering system hang?

Not sure how useful this is, but I'll post it anyway. This is a (fairly) minimum setup of !Scrap !System !Internet and !FTPc (probably not the latest version). !Internet only has drivers for the Ether3 card I'm using. But I can boot and run this with nothing else. It's a bit maunal, open a filer win...
by IanS
Sat Oct 26, 2019 9:44 pm
Forum: hardware
Topic: PS/2 keyboard & mouse to Archimedes adapter MK II
Replies: 33
Views: 5201

Re: PS/2 keyboard & mouse to Archimedes adapter MK II

So I finally got round to trying to build one of these. With a view to getting a few PCB's made. This is what I've got so far. IMG_20191026_220925.jpg (this explains my interest in the ps/2 sockets from Dave - https://stardot.org.uk/forums/viewtopic.php?f=8&t=17861) I'm not sure what the Reset link ...
by IanS
Sat Oct 26, 2019 4:12 pm
Forum: hardware
Topic: IFEL A3xx Ram upgrade chips
Replies: 4
Views: 595

Re: IFEL A3xx Ram upgrade chips

When I upgraded my A3010 to 4MB, I looked up the spec of the chips used for the 1MB upgrade I removed. It looked like they were a good match, so I got another set and added them to the Ifel board in my A3xx. It didn't work, it still only showed 2MB. There are no links or switches to change, so I ema...
by IanS
Tue Oct 22, 2019 7:57 pm
Forum: hardware
Topic: PSU for Atom
Replies: 16
Views: 392

Re: PSU for Atom

What is the voltage reading on the power pins on any of the chips?

You need to check if LK6 & LK7 have been fitted to bypass the onboard voltage regulators. The link are near the regulators, under the heatsink. Post pictures if not sure.
by IanS
Tue Oct 22, 2019 2:55 pm
Forum: hardware
Topic: Very dead A3000 (now very much alive)
Replies: 20
Views: 666

Re: Very dead A3000

Just as a double-check, are you counting from the right end. Pin 1 is at opposite ends for the two keyboard connectors.
by IanS
Mon Oct 21, 2019 9:36 pm
Forum: hardware
Topic: New A3000 owner - dumb questions
Replies: 12
Views: 375

Re: New A3000 owner - dumb questions

matburton wrote:
Mon Oct 21, 2019 9:19 pm
This is what mine looks like

I think I've found the answer to (b) it's specifically ROMs 0296,041-01 to 0296,044-01 I'd need.
Interesting, that looks a big improvement, the mouse connector can be a bit fiddly to fit on the original cases.

Any RISC OS 3.11 roms should work.
by IanS
Mon Oct 21, 2019 5:51 pm
Forum: hardware
Topic: New A3000 owner - dumb questions
Replies: 12
Views: 375

Re: New A3000 owner - dumb questions

Next to where you plug the mouse in. Yup, mine doesn't have anything resembling a battery holder there. It's not obviously a battery holder, it's just a small panel with a screw in the centre. It's just above the mouse cable in this picture - http://chrisacorns.computinghistory.org.uk/Pics/A30002D....
by IanS
Mon Oct 21, 2019 4:33 pm
Forum: hardware
Topic: New A3000 owner - dumb questions
Replies: 12
Views: 375

Re: New A3000 owner - dumb questions

This web page shows some options for how and where to install a battery and diode in an A3000 case. And is wrong. It shows adding a battery (with diode) attached to LK5. Without something fitted in the D1 position on the motherboard, it will do nothing. Fitting D1 and using LK5 would be fine, but t...
by IanS
Sun Oct 20, 2019 10:14 pm
Forum: hardware
Topic: My new A3010 is up and running. A few questions...
Replies: 8
Views: 234

Re: My new A3010 is up and running. A few questions...

It's a bit slow, but you can use a serial cable to transfer files.
(I've recently started including a copy of !Connector as part of the software included with a DOM, I think you should have it)
by IanS
Sat Oct 19, 2019 7:24 pm
Forum: hardware
Topic: Open source A3020 RAM
Replies: 24
Views: 1110

Re: Open source A3020 RAM

cmorley wrote:
Sat Oct 19, 2019 5:17 pm
10+ cycles of the test now and zero errors so that is good.
Excellent news. Lets hope it's the same on an A3020 (which I don't own, or I'd volunteer to help)
by IanS
Sat Oct 19, 2019 2:35 pm
Forum: hardware
Topic: Open source A3020 RAM
Replies: 24
Views: 1110

Re: Open source A3020 RAM

cmorley wrote:
Sat Oct 19, 2019 1:29 pm
Fresh from soldering (I didn't even clean the flux off) A3020 RAM with buffers under test in an A4000.

Booted and detected 4096KB. Now running IanS's large file copy test test.
And... what is the result?

Looks good, those buffers look closely packed together.

Fingers crossed here.
by IanS
Fri Oct 18, 2019 7:15 pm
Forum: hardware
Topic: An0n0 Mortuary
Replies: 8
Views: 497

Re: An0n0 Mortuary

A blank raster on the UHF doesn't tell you much, just that the modulator and power supply are probably ok. LK3 is the alternative keyboard connector. https://stardot.org.uk/forums/viewtopic.php?f=16&t=13291&p=173332#p173332 (don't forget to change link 14 if you try this). You could try linking the ...
by IanS
Fri Oct 11, 2019 11:28 pm
Forum: hardware
Topic: Formatting SD/CF cards for use on RISC OS 3.1
Replies: 109
Views: 23582

Re: Formatting SD/CF cards for use on RISC OS 3.1

And just for completeness, here it is in my A5000 :) tn_20191011_233353.jpg Thanks, again. So it looks like the map is in a different place and it has an extra zone. I don't know enough about the disk format to know if that makes sense. I'll have to try and get RIC OS running on a Pi and try fillli...
by IanS
Fri Oct 11, 2019 10:24 pm
Forum: hardware
Topic: A4 Laptop - replacement electrolytic capacitors and CMOS battery
Replies: 21
Views: 876

Re: A4 Laptop - replacement electrolytic capacitors and CMOS battery

The 80C51 does seem to reset the PS/2 keyboard a couple of times before it finally accepts that it's there. It might be that it can't detect the key-down events during that process -- or that it realises so late that RISC OS has stopped checking for keys being held down and moved on to booting the ...
by IanS
Fri Oct 11, 2019 9:46 pm
Forum: hardware
Topic: Formatting SD/CF cards for use on RISC OS 3.1
Replies: 109
Views: 23582

Re: Formatting SD/CF cards for use on RISC OS 3.1

Following my own guide at the start of this thread (on a RPi B+ running RISC OS 5.24 with !HForm 2.75), I get exactly as I described previously, 503mb with HForm offering me a 1024 LFAU. Very interesting, thanks for confirming. I wonder how if finds the extra space. Have you ever filled a disk conf...