Search found 543 matches

by sirbod
Tue Apr 04, 2017 7:40 am
Forum: hardware
Topic: RiscPC 600
Replies: 4
Views: 169

Re: RiscPC 600

Hard to tell from either photo if that's a manufacturing defect or blistering caused by acid, the chip looks like it has acid residue on it so could do with a clean in that area just to be in the safe side. Your mouse pointer looks okay in the screenshot, you mentioned it was always corrupt in the O...
by sirbod
Mon Apr 03, 2017 7:56 am
Forum: hardware
Topic: RiscPC 600
Replies: 4
Views: 169

Re: RiscPC 600

I had an identical issue on my Kinetic a few weeks ago, it turned out to be a poor connection with the VRAM. The quick way to test this is to simply remove the VRAM and see if you get a display, if you do, thoroughly cleaning all the contacts and VRAM pads. If that isn't the problem, track corrosion...
by sirbod
Sun Apr 02, 2017 6:59 pm
Forum: emulators
Topic: VirtualA5000 and OS_Byte 19
Replies: 3
Views: 176

Re: VirtualA5000 and OS_Byte 19

I tested most emulators for gaming compatibility, Arculator and Red Squirrel are the only two worth using. Since I did the tests, Arculator has had some major source code updates, particularly around CPU instruction timing and JFD support, but isn't yet available as a binary download. It still suffe...
by sirbod
Sun Mar 26, 2017 10:57 am
Forum: wanted
Topic: WorldScape (1990) (Eclipse) for the Archimedes
Replies: 0
Views: 64

WorldScape (1990) (Eclipse) for the Archimedes

I have a copy that was submitted to the project, but appears to be a pre-release v0.91

If you have a full release, please let me know. I'm after copies of the two floppies, which are unprotected, and confirmation of any changes to the manual between pre-release and final.
by sirbod
Mon Mar 20, 2017 6:17 pm
Forum: software
Topic: Stunt Racer 2000 frame rate
Replies: 10
Views: 346

Re: Stunt Racer 2000 frame rate

It looks the source code I have is probably an early test build, so I can't just recompile it and drop it in the main game. I have however compared the assembler with the SA version, to find the relevant code in the game itself and patch it. I've managed to locate and patch: ⋅ Cornering gl...
by sirbod
Mon Mar 20, 2017 3:21 pm
Forum: software
Topic: Stunt Racer 2000 frame rate
Replies: 10
Views: 346

Re: Stunt Racer 2000 frame rate

Oooo I'd love a special version :) I've got it running at 50fps on the Pi by lowering the steering and the car movement, although its unplayable due to knock on side effects. I've yet to look at gravity and there's also mention of balls, hammers and other things that probably need adjusting. It loo...
by sirbod
Mon Mar 20, 2017 12:24 pm
Forum: software
Topic: Stunt Racer 2000 frame rate
Replies: 10
Views: 346

Re: Stunt Racer 2000 frame rate

Are there any technical reasons why the author(s) of SR2000 couldn't have made the game frame-rate independent No. I believe it was developed on an ARM250 and developers quite often didn't cater for ARM chips getting faster back then. I'm not aware of any games that regulate in game assets based on...
by sirbod
Sun Mar 19, 2017 12:22 pm
Forum: software
Topic: Several lamer's questions
Replies: 6
Views: 209

Re: Several lamer's questions

litwr wrote:

Code: Select all

OSCLI "LOAD <obey$dir>.PROGNAME "+STR$~ADDR

Using Obey$Dir in a program is never a good idea, as it changes whenever an obey script is executed. It will be okay, provided you load all your files as soon as the program runs, and never have to access local files again.
by sirbod
Sun Mar 19, 2017 8:37 am
Forum: software
Topic: Several lamer's questions
Replies: 6
Views: 209

Re: Several lamer's questions

I can't catch the difference between it and the standard *-prompt. There is no difference that I'm aware of. Under the hood it may install a different error handler, but it's not something you'd notice and certainly isn't documented. I have another question for Basic. I want to load a ML program. I...
by sirbod
Sun Mar 19, 2017 12:38 am
Forum: software
Topic: Several lamer's questions
Replies: 6
Views: 209

Re: Several lamer's questions

1. Is there ways to make Archimedes of the 80s faster? To stop video or something else? Some magic Basic commands? What are you trying to speed up? You only get a minor speed improvement by shutting off MEMC Video and Sound DMA with OS_UpdateMEMC . You want to set bits 10 (video) and 11 (sound) to ...
by sirbod
Sun Mar 19, 2017 12:18 am
Forum: emulators
Topic: Arculator on Linux?
Replies: 100
Views: 3633

Re: Arculator on Linux?

litwr wrote:I am using version 3.11. 3.00 doesn't work with Arc-em for me, it gives the blank screen. Is there a way to set up a proper configuration for floppies?

Ah, sorry, I thought this thread was about Arculator. I was referring to builds of Arculator from the GitHub source.
by sirbod
Sat Mar 18, 2017 5:21 pm
Forum: emulators
Topic: Arculator on Linux?
Replies: 100
Views: 3633

Re: Arculator on Linux?

litwr wrote:but I still fail with floppy images

Which OS version are you using? Unless the sources have been updated since I reported the issue last year, floppies fail under everything except RISC OS 3 (new FDC)
by sirbod
Wed Mar 15, 2017 3:45 pm
Forum: software
Topic: Stunt Racer 2000 frame rate
Replies: 10
Views: 346

Re: Stunt Racer 2000 frame rate

That sounds strange as I thought it was too fast on the A5000 compared to playing it on the A3010. I'm sure in the options it told you what ARM it was running. As noted in the OP, the game timing is linked to the 50Hz ticker, so a faster monitor refresh rate would cause the game to speed up. I'm no...
by sirbod
Wed Mar 15, 2017 8:07 am
Forum: software
Topic: Stunt Racer 2000 frame rate
Replies: 10
Views: 346

Stunt Racer 2000 frame rate

I recently did a recording of the StrongARM release of Stunt Racer 2000 running on the Pi and what quickly becomes apparent is how unplayable it is, due to its low frame rate. As with many of the early games, the frame rate is artificially restricted to a rate the 8Mhz ARM2 was capable of, which in ...
by sirbod
Sat Mar 11, 2017 9:58 am
Forum: hardware
Topic: A3000 needs to "warm up"?
Replies: 3
Views: 142

Re: A3000 needs to "warm up"?

From my experience, the "drive empty" thing is quite common - I've had three machines (two A3000s and an A3020) that have had this issue and it's always been caused by track damage (almost certainly due to the battery leaking). I agree, without doubt it's track damage caused by battery ac...
by sirbod
Thu Mar 09, 2017 4:31 pm
Forum: software
Topic: Unreleased games
Replies: 13
Views: 444

Re: Unreleased games

On the subject of "Unreleased games", were Stunt Racer 2000 Extra Tracks Series 3 or the Stunt Racer 2000 Track Designer ever released? I have both, which could probably be released if someone is prepared to test them to confirm they work. The Wimp version of the track designer can be down...
by sirbod
Thu Mar 09, 2017 4:27 pm
Forum: software
Topic: How to make ADF from "002637" file (arcade.demon)
Replies: 6
Views: 142

Re: How to make ADF from "002637" file (arcade.demon)

load up a blank ADF file in the emulator (via clicking the floppy drive) and drag the files from SparkFS into this ADF file. Then I should have a complete ADF file I can run on my real A3000. I don't believe any emulator lets you save ADF, only load them. You can create ADF with ADFFS (which is whe...
by sirbod
Wed Mar 08, 2017 5:40 pm
Forum: hardware
Topic: A3010 hard disc interface
Replies: 123
Views: 10487

Re: A3010 hard disc interface

The drives appear when booted as numbers 4 & 5 (not their names) and clicking on them gives an error saying they are not formatted. Interesting, the same symptom I'm seeing on my A7000, although I have normal length cables. As far as I remember there's no minimum length for ATA cables , but the...
by sirbod
Wed Mar 08, 2017 11:25 am
Forum: software
Topic: Unreleased games
Replies: 13
Views: 444

Re: Unreleased games

I bought a copy on disk from a PD library (possibly APDL) in the early nineties and it wasn't bad. However, I also remember the 4D adverts for a Spitfire game and I don't think it was the same one. Thanks for the clarification. In that case, I suspect development never started as I have a copy of A...
by sirbod
Wed Mar 08, 2017 9:34 am
Forum: software
Topic: AdAstra by Ray Loades-Bannon, MyWorld, and other software
Replies: 2
Views: 127

Re: AdAstra by Ray Loades-Bannon, MyWorld, and other software

I have seen mentions of the "Acorn Software Preservation Project" but it doesn't seem to have a website with a list of files to download, just some sort of forum thread with updates? And the files are in a strange format that is not ADF? No website, just the development forum which also h...
by sirbod
Wed Mar 08, 2017 8:51 am
Forum: software
Topic: How to make ADF from "002637" file (arcade.demon)
Replies: 6
Views: 142

Re: How to make ADF from "002637" file (arcade.demon)

They will be archives, most should open with SparkFS. Either drag them onto the SparkFS icon or set their filetypes to "Archive"
by sirbod
Tue Mar 07, 2017 9:40 pm
Forum: software
Topic: Unreleased games
Replies: 13
Views: 444

Re: Unreleased games

Chaos Engine (Krisalis) - Was developed to near completion by Krisalis around the time they shutdown, was completed by R-Comp and released in 2000 Darklands - There's two games of this name, the later I don't believe was ever released ⋅ Darklands (1993) (Archimedes World) - developed by D...
by sirbod
Tue Mar 07, 2017 9:30 am
Forum: software: games
Topic: what should i write next?
Replies: 139
Views: 5864

Re: what should i write next?

What's the longest line length you need to draw? Could you avoid division and speed up your line draw by storing line details in a table? If your longest line is 15 pixels for example, you'd want a 16x16 table (512 bytes) containing: nibble <start step length> nibble <mid step length> nibble <no of ...
by sirbod
Mon Mar 06, 2017 8:50 pm
Forum: software
Topic: OVERLOAD really a well written game
Replies: 8
Views: 546

Re: OVERLOAD really a well written game

[OT] Jon, if you get a spare moment, would mind recording a video of yourself playing ' Kerbang! ' It's Wimp based, which ADFFS doesn't currently support and as it directly accesses the Floppy Drive Controller via IOC it won't run under emulation either. Once I figure out how to support Wimp apps, ...
by sirbod
Sun Mar 05, 2017 6:24 pm
Forum: software
Topic: OVERLOAD really a well written game
Replies: 8
Views: 546

Re: OVERLOAD really a well written game

I cant remember if they also made another game as well.....anyone? They released Inferno and Overload and there was an unreleased title Toybox Dreams , which also went under working titles of "Pocket Money" and "Colin and Suzie's Dreams", I'll see if I can track down the demo an...
by sirbod
Sun Feb 26, 2017 2:47 pm
Forum: software
Topic: SimCity copy protection
Replies: 4
Views: 234

Re: SimCity copy protection

Any chance that the Archimedes Software Preservation Project could release the Acorn version of SimCity 2000? The project owns the rights, so yes. I've not looked at it yet, but I have a horrible feeling it has a huge manual that will need scanning / OCR first. There's also two official releases, o...
by sirbod
Sun Feb 26, 2017 8:15 am
Forum: software
Topic: SimCity copy protection
Replies: 4
Views: 234

Re: SimCity copy protection

The copy protection should work from ADF, as its only going to stop the casual file copy. It reads track 159 sectors 1, 2 and 4 all of which are normal sized sectors. It's entirely possible its a bug, depending on which OS version its being run on; looking at the date it would be a RISCOS 2 release ...
by sirbod
Wed Feb 22, 2017 10:05 pm
Forum: hardware
Topic: A7000+ revival, pointers on where to start
Replies: 14
Views: 379

Re: A7000+ revival, pointers on where to start

Hard to tell the state of it without cleaning the tracks around the battery property. If the IDE doesn't work, see my A7000 thread for the likely cause, which will be the three tracks under the C13 text, next to the battery.
by sirbod
Wed Feb 22, 2017 8:07 pm
Forum: software
Topic: Icon virus?
Replies: 9
Views: 295

Re: Icon virus?

You not heard of Google :roll:

Try VZap, never tried it myself but worth a go.
by sirbod
Wed Feb 22, 2017 6:54 pm
Forum: software
Topic: Icon virus?
Replies: 9
Views: 295

Re: Icon virus?

Taken from The Archimedes Virus Reference Document : Virus name : Icon Aliases : Icon-A, Filer, Poison, NewVirus Origin : United Kingdom Isolation date : 1990? Effective length : 2096, 2616, 5498, 5574, 5737 or 5742 in known variants Virus type : Task. Stores code as separate file. Symptoms : Namele...

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