Search found 1207 matches

by SarahWalker
Fri Mar 20, 2020 8:03 am
Forum: emulators
Topic: Arculator Install Instructions
Replies: 13
Views: 10467

Re: Arculator Install Instructions

These instructions are a bit outdated and still recommend Arculator v0.99; I wouldn't recommend people use that version!
by SarahWalker
Fri Mar 13, 2020 5:33 pm
Forum: hardware
Topic: SA1100 for sale on ebay!
Replies: 10
Views: 462

Re: SA1100 for sale on ebay!

It's a StrongARM core with memory, IO and video controllers that are nothing like those used in any Acorn hardware.
by SarahWalker
Wed Mar 11, 2020 7:40 pm
Forum: hardware
Topic: SA1100 for sale on ebay!
Replies: 10
Views: 462

Re: SA1100 for sale on ebay!

Well not really; it won't run any of the existent 26-bit versions of RISC OS, and the source code we have is after 32-bit porting...
by SarahWalker
Wed Mar 11, 2020 5:54 pm
Forum: hardware
Topic: SA1100 for sale on ebay!
Replies: 10
Views: 462

Re: SA1100 for sale on ebay!

Before anyone gets too excited note that this is not compatible with the RiscPC architecture or any other Acorn-era hardware. So it's not really any more interesting than any other random ARM-based SoC.
by SarahWalker
Sat Mar 07, 2020 11:35 am
Forum: upcoming and recent events & exhibitions
Topic: ABUG Cambridge Booking Thread - May 15-17th 2020
Replies: 35
Views: 1273

Re: ABUG Cambridge Booking Thread - May 15-17th 2020

Me! Half table, Friday through Sunday please.
by SarahWalker
Fri Feb 28, 2020 3:51 pm
Forum: hardware
Topic: Acorn AKA20 We32206 Floating Point Co-Processor
Replies: 25
Views: 621

Re: Acorn AKA20 We32206 Floating Point Co-Processor

Both AMD and Cyrix/IBM 5x86s have FPUs built in. The NexGen 5x86 doesn't but as that chip doesn't fit a 486 socket and bus you won't see it in a RiscPC PC card. The Cyrix FPU will be faster per clock than the AMD one, but AMD clocks faster. In any case the difference will probably be unnoticeable on...
by SarahWalker
Thu Feb 27, 2020 10:41 am
Forum: hardware
Topic: Acorn AKA20 We32206 Floating Point Co-Processor
Replies: 25
Views: 621

Re: Acorn AKA20 We32206 Floating Point Co-Processor

The backplane copro bus relies on the copro instruction being present on the main data bus. This will be the case on arm2 as it would have just been fetched, but won't be the case on the arm3 due to the cache. Arm3 has a separate copro bus to work around this, but this extra bus isn't connected to t...
by SarahWalker
Sat Feb 22, 2020 8:36 am
Forum: hardware
Topic: Acorn A540 Restoration
Replies: 7
Views: 311

Re: Acorn A540 Restoration

IanS wrote:
Fri Feb 21, 2020 10:03 pm
arkleyjoe wrote:
Fri Feb 21, 2020 9:19 pm
Without a battery / keyboard (del) will I get supervisor like on and A3000 ???
Del held at power-on should get you the desktop. A3000 is the same. If you get the supervisor, you probably didn't hold DEL long enough.
Either that or the CMOS RAM chip is dead.
by SarahWalker
Fri Feb 21, 2020 5:31 pm
Forum: hardware
Topic: Acorn A540 Restoration
Replies: 7
Views: 311

Re: Acorn A540 Restoration

You'll need to have the CPU card present, but memory cards, podules and the backplane are entirely optional.
by SarahWalker
Mon Jan 06, 2020 5:59 pm
Forum: hardware
Topic: How many 8bit beeb basic machines
Replies: 19
Views: 623

Re: How many 8bit beeb basic machines

FWIW, the serial number thread has estimates of ~350k for Electron, ~260k for Master 128 and ~40k for Master Compact, which I think are reasonably accurate. BBC A/B numbers are less certain, but look to be sub-1 million, probably in the area of 700-800k. B+ is even less clear but is almost certainly...
by SarahWalker
Sat Jan 04, 2020 11:09 am
Forum: off-topic
Topic: Modern Assembly and Compilers
Replies: 31
Views: 599

Re: Modern Assembly and Compilers

Nintendo are on ARM these days. Gamecube/Wii/Wii U were PowerPC, as were Xbox 360 and PS3.
by SarahWalker
Fri Dec 27, 2019 12:28 pm
Forum: software
Topic: New demo - Horizon
Replies: 11
Views: 1851

Re: New demo - Horizon

Following from the belated final version here's the belated writeup! Loader Loading screen was originally meant to be Farbrausch-style, but I decided this was boring and added the spinning balls. Screen is in MODE 9, the balls are preshifted and used to mask a solid colour. Everything in the demo is...
by SarahWalker
Tue Dec 17, 2019 8:39 pm
Forum: software: other
Topic: New music conversion - Castlevania III
Replies: 17
Views: 1274

Re: New music conversion - Castlevania III

It's an ADFS disc so you need to do a SHIFT-A-BREAK.
by SarahWalker
Sun Dec 08, 2019 10:01 am
Forum: software
Topic: New demo - Horizon
Replies: 11
Views: 1851

Re: New demo - Horizon

Finally got the final/non-party version done. Fixes some glitches, improves a couple of parts, adds StrongARM and VGA support, and the music player doesn't go out of tune...
by SarahWalker
Mon Nov 25, 2019 12:33 pm
Forum: emulators
Topic: How to create an hdf file in windows from an ADFS HD
Replies: 4
Views: 546

Re: How to create an hdf file in windows from an ADFS HD

RPCemu, and Arculator pre-v2.0, need a dummy 512 byte header on the front of hard disc images. This is one of my stupid bugs from circa 2006, and I'm a bit embarrassed that it's still causing problems!
by SarahWalker
Sun Nov 24, 2019 9:38 am
Forum: software: other
Topic: New music conversion - Castlevania III
Replies: 17
Views: 1274

New music conversion - Castlevania III

It's been a couple of years or so, must be time for a new music conversion. Today's ABUG release is Castlevania III : Dracula's Curse, or to be more precise Akumajō Densetsu, as this is the Famicom version that's been converted. This has an additional sound chip in the cartridge, adding an extra 3 v...
by SarahWalker
Thu Nov 14, 2019 10:08 pm
Forum: emulators
Topic: Arculator v2.0 released!
Replies: 33
Views: 5910

Re: Arculator v2.0 released!

Yes, that should work.
by SarahWalker
Thu Nov 14, 2019 8:40 am
Forum: emulators
Topic: Arculator v2.0 released!
Replies: 33
Views: 5910

Re: Arculator v2.0 released!

Dunkinator wrote:
Wed Nov 13, 2019 6:40 pm
Thanks so much Sarah and great job! Does this version support hard drives under RISC OS 2.0?
Yes, either via the internal ST-506 interface (if you've configured an Archimedes 4xx machine), or via an ST-506/RISC Developments IDE/SCSI podule.
by SarahWalker
Sun Nov 10, 2019 8:50 pm
Forum: hardware
Topic: Joystick interfaces
Replies: 5
Views: 415

Re: Joystick interfaces

GamesPad/GamesPad Pro connects two SNES controllers to the printer port. 8 buttons each, software allows keyboard mapping and RISC OS 3 joystick SWIs. IIRC the only difference between GamesPad and GamesPad Pro is the exact type of controller used, with the latter having turbo. The Serial Port interf...
by SarahWalker
Sun Nov 10, 2019 8:59 am
Forum: emulators
Topic: Arculator v2.0 released!
Replies: 33
Views: 5910

Re: Arculator v2.0 released!

I'll have to look into why that dialog is popping up, however you can just press 'Cancel' and from that point the image seems to work fine.
by SarahWalker
Sat Nov 09, 2019 7:51 pm
Forum: emulators
Topic: Arculator v2.0 released!
Replies: 33
Views: 5910

Re: Arculator v2.0 released!

Thanks a lot for this new version - the machine config alone is really great! Still experimenting with all the new stuff. There seems to be a problem with connecting existing .hdfs with e.g. ADFS and ZIDEFS IDE, but it is too early to suggest a bug! Arculator used to have a bug where it added a poi...
by SarahWalker
Sat Nov 09, 2019 3:38 pm
Forum: emulators
Topic: Arculator v2.0 released!
Replies: 33
Views: 5910

Re: Arculator v2.0 released!

Windows zip file now replaced with a non-broken version.
by SarahWalker
Sat Nov 09, 2019 2:51 pm
Forum: emulators
Topic: Arculator v2.0 released!
Replies: 33
Views: 5910

Arculator v2.0 released!

That can't be right. It's apparently been TEN YEARS since the last Arculator release. I'm old... Anyway, here's v2.0. Changes from v0.99 : FPA10 emulation Podule emulation. Current included podules : AKA31 SCSI Podule, AKD52 Hard Disc Podule, Computer Concepts Lark, HCCS Ultimate CD-ROM, ICS ideA, R...
by SarahWalker
Tue Oct 22, 2019 4:54 pm
Forum: hardware
Topic: RiscPC600 with StrongArm
Replies: 9
Views: 936

Re: RiscPC600 with StrongArm

I might have noticed a StrongArm-200MHz-card, right ? Some I-cubic Ethernet adapter with RJ45 and BNC ? Yep. What is this very small board vertically seated that only connects via a handfull of pins to the main PCB ? Looks like a 16-bit sound card. Early RiscPCs only supported 8-bit audio on the mo...
by SarahWalker
Sat Oct 12, 2019 11:54 am
Forum: software
Topic: Should I Worry About Viruses Found By My RISC PC?
Replies: 3
Views: 507

Re: Should I Worry About Viruses Found By My RISC PC?

You're unlikely to run into many RISC OS viruses written after 1997... Ideally I'd recommend running the VProtect module on all your machines - this is included on most of the newer !Boot sequences, and will at least warn you when it detects a virus (and will stop it spreading). Since you're already...
by SarahWalker
Thu Oct 10, 2019 10:20 am
Forum: hardware
Topic: A confused A7000
Replies: 12
Views: 688

Re: A confused A7000

The A7000+ was released after ART was closed iirc, so the relevant RISC OS (3.71?) doesn't have an ART banner. This machine looks to have been upgraded to 3.7, though I had thought that version could detect the ARM7500.
by SarahWalker
Wed Oct 09, 2019 6:25 pm
Forum: software: classic games
Topic: Firebug, Sorcery, Boxer and Smash and Grab...
Replies: 6
Views: 488

Re: Firebug, Sorcery, Boxer and Smash and Grab...

More likely that it's just the same basic engine recycled for each game.
by SarahWalker
Thu Oct 03, 2019 5:12 pm
Forum: programming
Topic: RISC OS Arm assembly
Replies: 3
Views: 850

Re: RISC OS Arm assembly

'Close to the hardware' coding is generally frowned upon, however if you absolutely must then the ARM2/MEMC/IOC/VIDC datasheets are at http://www.home.marutan.net/arcemdocs/ (under 'Archimedes Level Hardware'), and one of the Technical Reference manuals from http://chrisacorns.computinghistory.org.u...
by SarahWalker
Wed Oct 02, 2019 4:39 pm
Forum: hardware
Topic: A3010 General Queries
Replies: 24
Views: 1009

Re: A3010 General Queries

For gaming from personal experience the A3010 seems to have the advantage over the A3020. This will especially be so if one needs joysticks to run a game. In theory games should work equally well on both machines but I have found some games work on the A3010 and struggle on the A3020 (may be that i...