Search found 1889 matches

by DutchAcorn
Sun Oct 14, 2018 7:54 pm
Forum: hardware
Topic: RiscPC600:battery leak
Replies: 12
Views: 243

Re: RiscPC600:battery leak

You could have a read through this thread: viewtopic.php?f=16&t=12527

It may help / inspire.
by DutchAcorn
Sun Oct 14, 2018 7:16 pm
Forum: introduce yourself
Topic: Hello from Northampton (starting an Acorn System 2/3 refurbishment)
Replies: 15
Views: 198

Re: Hello from Northampton (starting an Acorn System 2/3 refurbishment)

Welcome Chris, that's a very nice computer, please send updates on the restoration / upgrade progress!
by DutchAcorn
Sat Oct 13, 2018 5:26 pm
Forum: programming
Topic: Ray Traced Spheres
Replies: 26
Views: 819

Re: Ray Traced Spheres

IanS wrote:
Sat Oct 13, 2018 2:56 pm
DEADDEAD is generally not a good sign, looks like you haven't let it finish copying.
ray.PNG
That's what you get if you try to do things too fast.. :oops: Attachment replaced...
by DutchAcorn
Sat Oct 13, 2018 2:27 pm
Forum: programming
Topic: Ray Traced Spheres
Replies: 26
Views: 819

Re: Ray Traced Spheres

Here's the version my brother made. The files on the disk: RAY_TRACE Does the ray tracing and saves the screens MERGESCR merges the screendumps into an "ALLSCREENS" sprite file. SHOWTRACE shows an animation based on the sprites. Make sure you have at least 800K of sprite size configured. The ALLSCRE...
by DutchAcorn
Sat Oct 13, 2018 2:23 pm
Forum: software
Topic: Combining sprites in RiscOS
Replies: 4
Views: 150

Re: Combining sprites in RiscOS

Thanks guys, that really helped. The code I used:

Code: Select all

 *SLOAD SCR1
 *SRENAME SCREENDUMP SCR1
 FOR N=2 TO 19
   OSCLI("SMERGE SCR")+STR$(N)
   OSCLI("SRENAME SCREENDUMP SCR")+STR$(N)
 NEXT
 *SSAVE ALLSCREENS
by DutchAcorn
Sat Oct 13, 2018 11:18 am
Forum: software
Topic: Combining sprites in RiscOS
Replies: 4
Views: 150

Combining sprites in RiscOS

Inspired by the ray traced spheres thread I took a look the animated ray traced spheres program my brother made in the late eighties on an A310. I found it and it works but it produces individual sprite files which can be shown using a separate play program. The play program however expects a single...
by DutchAcorn
Thu Oct 11, 2018 8:37 pm
Forum: software: other
Topic: Music 500/5000 software/music
Replies: 45
Views: 760

Re: Music 500/5000 software/music

Browsing through my disks there were a few that I had not imaged before. The labels are non descriptive so I don't know if this adds to the archive or to the chaos... :?

One of them is labelled "instruments" which it seems to contain...
by DutchAcorn
Wed Oct 10, 2018 8:42 pm
Forum: programming
Topic: Ray Traced Spheres
Replies: 26
Views: 819

Re: Ray Traced Spheres

Nice! It looks almost exactly like a program my brother wrote for the Arc. He included rotation of the spheres. Saved every image after tracing and made a nice smooth animation from the saved screens. I'll see if I can find the code...
by DutchAcorn
Wed Oct 10, 2018 8:33 pm
Forum: software: other
Topic: Music 500/5000 software/music
Replies: 45
Views: 760

Re: Music 500/5000 software/music

Thanks for all the additional info, MIA's, and media scans, very helpful. I've been looking at Music 87, the image posted elsewhere is single sided but there's a *drive 2 in there when you choose AMPLE from the menu. So any chance of it being re-imaged as dsd? What's in the box, any instructions? T...
by DutchAcorn
Wed Oct 10, 2018 8:26 pm
Forum: software: other
Topic: Music 500/5000 software/music
Replies: 45
Views: 760

Re: Music 500/5000 software/music

Coeus wrote:
Wed Oct 10, 2018 12:43 pm
... From an archiving perspective it would be good to know a virgin copy exists somewhere. It would also be good to have it so I can at least see what has been patched.
Attached is an original one. I have another rom with a different serial number, but have not yet made an image of that one.
by DutchAcorn
Wed Oct 10, 2018 3:47 pm
Forum: off-topic
Topic: Where do you get your retrocomputing fix?
Replies: 31
Views: 410

Re: Where do you get your retrocomputing fix?

I deleted my FB account (or that is what FB wants me to believe).

I sometimes browse the vintage computers forums but that covers so much that finding or following anything is quite hard. Still, I don’t have anywhere else I know I could go with Exidy Sorcerer related stuff.
by DutchAcorn
Tue Oct 09, 2018 7:54 pm
Forum: general
Topic: Today I received.....
Replies: 4854
Views: 334352

Re: Today I received.....

Nice find! Didn't you have an A5000 without a keyboard?
by DutchAcorn
Sun Oct 07, 2018 1:12 pm
Forum: introduce yourself
Topic: Hello fom Essex, UK.
Replies: 13
Views: 219

Re: Hello fom Essex, UK.

Welcome to Stardot! That is a nice looking Elk. And who wouldn’t have wanted a GoSDC in ‘84 :D
by DutchAcorn
Sun Oct 07, 2018 1:08 pm
Forum: introduce yourself
Topic: Hello from France
Replies: 9
Views: 141

Re: Hello from France

Welcome to Stardot! And good luck getting your RiscPCs up and running!
by DutchAcorn
Sat Oct 06, 2018 6:26 pm
Forum: software: other
Topic: Music 500/5000 software/music
Replies: 45
Views: 760

Re: Music 500/5000 software/music

Thanks for all the additional info, MIA's, and media scans, very helpful. I've been looking at Music 87, the image posted elsewhere is single sided but there's a *drive 2 in there when you choose AMPLE from the menu. So any chance of it being re-imaged as dsd? What's in the box, any instructions? T...
by DutchAcorn
Fri Oct 05, 2018 11:30 am
Forum: software: other
Topic: Music 500/5000 software/music
Replies: 45
Views: 760

Re: Music 500/5000 software/music

Pernod wrote:
Tue Oct 02, 2018 8:30 pm

Hybrid Music Albums:
Music City 2
by DutchAcorn
Fri Oct 05, 2018 10:57 am
Forum: software: other
Topic: Music 500/5000 software/music
Replies: 45
Views: 760

Re: Music 500/5000 software/music

Pernod wrote:
Tue Oct 02, 2018 8:30 pm

AMPLINEX 001-028: https://sites.google.com/site/amplinexarchive/
020 looks bad and 022 is missing
20 and 22 attached.
by DutchAcorn
Fri Oct 05, 2018 6:54 am
Forum: software: other
Topic: Music 500/5000 software/music
Replies: 45
Views: 760

Re: Music 500/5000 software/music

Thanks for all the hard work Nigel, that is an impressive list of links! I’m quite sure I have disks that are labeled Amplinex 20 and 22, so I’ll have a look at those when I get the chance (somewhere this month). Quite a few links are your posts, so I guess you have a stash of original media? Could...
by DutchAcorn
Thu Oct 04, 2018 1:47 pm
Forum: hardware
Topic: This is not a language
Replies: 38
Views: 757

Re: This is not a language

Elminster wrote:
Thu Oct 04, 2018 7:27 am
DutchAcorn wrote:
Thu Oct 04, 2018 7:21 am

Since you started this with “this is not a language” and you are now in Terminal mode, the cmos chip does seem to hold some kind of setting.
Thread started by different person :)
Ah, so it was. These mixed threads can be hard to follow, thanks for pointing that out.
by DutchAcorn
Thu Oct 04, 2018 7:21 am
Forum: hardware
Topic: This is not a language
Replies: 38
Views: 757

Re: This is not a language

... pressing CTRL+D+BREAK shows Acorn MOS Acorn ADFS but there is no cursor for typing in commands.... You can’t type in commands because it is booting from ADFS, which needs an ADFS floppy in the floppy drive. The fact that crtl-D-break does not end up at DFS makes the OS rom a suspect imo. I am c...
by DutchAcorn
Wed Oct 03, 2018 5:54 pm
Forum: software: other
Topic: Music 500/5000 software/music
Replies: 45
Views: 760

Re: Music 500/5000 software/music

Thanks for all the hard work Nigel, that is an impressive list of links!

I’m quite sure I have disks that are labeled Amplinex 20 and 22, so I’ll have a look at those when I get the chance (somewhere this month).
by DutchAcorn
Wed Oct 03, 2018 5:15 am
Forum: hardware
Topic: Memory Card Reader
Replies: 29
Views: 562

Re: Memory Card Reader

Well done! =D>
by DutchAcorn
Mon Oct 01, 2018 7:52 pm
Forum: hardware
Topic: Memory Card Reader
Replies: 29
Views: 562

Re: Memory Card Reader

If your sideways RAM is from Solidisk that may complicate things somewhat because it uses the user port and can cause a conflct with the MC reader. Do you have a way to get the MC filesystem ROM on disk? I’ll be happy to help you with the EPROM if you get stuck and if you don’t mind paying a little ...
by DutchAcorn
Mon Oct 01, 2018 6:00 am
Forum: hardware
Topic: Phillips CM8833 Troubles
Replies: 15
Views: 393

Re: Phillips CM8833 Troubles

Thanks for sharing these details. Having had similar issues I read “somewhere” that a LOPT in itself is quite robust and usually fails due to stress caused by degraded related components. Not knowing what related components to look for I replaced the LOPT on mine which brought it back to life. But i...
by DutchAcorn
Sun Sep 30, 2018 2:27 pm
Forum: introduce yourself
Topic: Hi from Nottingham.
Replies: 10
Views: 241

Re: Hi from Nottingham.

Welcome to Stardot, Daryl! :D Hope you get your A4000 and ARM dev sorted out...
by DutchAcorn
Fri Sep 28, 2018 3:48 pm
Forum: hardware
Topic: BBD B+ Issues..please help
Replies: 19
Views: 456

Re: BBD B+ Issues..please help

If the symptoms get worse when the bbc has warmed up you may be able to find a failing ic using coolant spray. I’d start with logic around the 6522 (IC20).

You could also check C3.
by DutchAcorn
Fri Sep 28, 2018 12:31 pm
Forum: hardware
Topic: Phillips CM8833 Troubles
Replies: 15
Views: 393

Re: Phillips CM8833 Troubles

Hi high pitched whine and no power led are also the symptoms of a dead lopt; probably the most common cause of failure for these monitors.
by DutchAcorn
Mon Sep 24, 2018 12:54 pm
Forum: hardware
Topic: BBC Model B - keyboard problems !
Replies: 10
Views: 328

Re: BBC Model B - keyboard problems !

It can also be a faulty / bad connecting LS259 at IC32. That has given me issues in the past.
by DutchAcorn
Sun Sep 23, 2018 3:32 pm
Forum: hardware
Topic: BBC Model B - keyboard problems !
Replies: 10
Views: 328

Re: BBC Model B - keyboard problems !

Q quick way to see if the cable is faulty is by connecting it the other way round (keyboard side to mb and vice versa), so that the used cable line per pin changes. If the symptoms remain the same it is unlikely to be caused by the cable.
by DutchAcorn
Wed Sep 12, 2018 12:31 pm
Forum: hardware
Topic: BBC B beep of death
Replies: 30
Views: 783

Re: BBC B beep of death

ChadsArcade wrote:
Wed Sep 12, 2018 11:43 am
...
I ran out of time to complete further tests last night, for clarity is the system VIA the one under the CPU, or the one next to the keyboard connector?
It’s the one just north of the keyboard connector. I expect it will currently behave the same if you remove the system VIA.