Search found 1091 matches

by sirbod
Sun Jul 12, 2020 9:57 pm
Forum: 32-bit acorn hardware
Topic: RISC OS 3.20 ROM's?
Replies: 142
Views: 13489

Re: RISC OS 3.20 ROM's?

Is it possible to pare this back, a la the "Roll Your Own RO3.1x" thread (https://stardot.org.uk/forums/viewtopic.php?t=14164)? Ideally I'd like to build 3.11 (or 3.19) with Wizzo IDEFS in ROM Possibly, although it's not something I've coded it for and have never tested it. If the Modules are ROM s...
by sirbod
Sun Jul 12, 2020 1:31 pm
Forum: 32-bit acorn hardware
Topic: RISC OS 3.20 ROM's?
Replies: 142
Views: 13489

Re: RISC OS 3.20 ROM's?

I've updated the build code (Build320-101.zip) in the OP with the checksum and CRC calculations. Hopefully you'll now get valid ROM's on physical Arcs - unfortunately it's not something I can test yet. I believe the reason you're struggling to get the CRC to match what the current RISC OS CRC code p...
by sirbod
Sun Jun 28, 2020 12:31 pm
Forum: 32-bit acorn software: classic games
Topic: Haunted House help
Replies: 3
Views: 194

Re: Haunted House help

Yes, you need to be pixel perfect with this game in various areas otherwise you end up having to restart the game.
by sirbod
Thu Jun 25, 2020 9:06 pm
Forum: 32-bit acorn software: classic games
Topic: ADFFS freezing after updates
Replies: 6
Views: 263

Re: ADFFS freezing after updates

ADFFS does a lot of things when it starts up, but reinitialising ADFS is the very last thing. Try loading ADFFS after a SHIFT-BREAK, just to make sure it loads without !Boot running, then you'll have to start pulling files out of !Boot until you figure out which one ADFFS doesn't play well with. I'd...
by sirbod
Wed Jun 24, 2020 11:23 pm
Forum: 32-bit acorn software: classic games
Topic: Haunted House help
Replies: 3
Views: 194

Re: Haunted House help

Inside the shed, take the fertiliser and drop it in the watering can. Go outside, close the shed door, drop the watering can on the water butt.

You need the fertiliser in it, before it will accept water :roll:
by sirbod
Wed Jun 24, 2020 11:15 pm
Forum: 32-bit acorn hardware
Topic: Which OS for RPC?
Replies: 6
Views: 435

Re: Which OS for RPC?

best OS for my RPC that is compatible with everything back to the A3000 days (As the RO4 upgrade is tempting). I'm currently running 3.7, but my research suggests the "Goldilocks" version is 3.6 3.71 would be the best OS for compatibility on a RiscPC with an ARM610. Avoid RISC OS 4.x and above and ...
by sirbod
Wed Jun 24, 2020 11:01 pm
Forum: 32-bit acorn hardware
Topic: How play joytick games on A3020 ?
Replies: 13
Views: 487

Re: How play joytick games on A3020 ?

Seems that at least for those games, a Krisalis/Bogeysticks -> Acorn translator module might be a good shout. This is where it gets somewhat complicated and why I put this disclaimer on the Joystick support page: NOTE: The interfaces a game supports in its code and what the documentation or game sa...
by sirbod
Wed Jun 24, 2020 10:07 pm
Forum: 32-bit acorn software: classic games
Topic: ADFFS freezing after updates
Replies: 6
Views: 263

Re: ADFFS freezing after updates

Go into the !ADFFS directory and try loading ADFFS550 manually to see if it hangs. If it doesn't hang, try loading ADFFSFiler.
by sirbod
Sun Jun 21, 2020 11:32 am
Forum: 32-bit acorn hardware
Topic: How play joytick games on A3020 ?
Replies: 13
Views: 487

Re: How play joytick games on A3020 ?

Not many games support the Acorn Joystick SWIs. The RTFM interface was the more widely supported one -- that and The Serial Port. According to the statistics, Acorn was the widest supported interface. In order of supported games: Joystick_support.png I've tested just about every game released for R...
by sirbod
Sun Jun 21, 2020 9:15 am
Forum: 32-bit acorn software: classic games
Topic: ADFFS freezing after updates
Replies: 6
Views: 263

Re: ADFFS freezing after updates

If I understand correctly, the games were working until you updated all packages, now they all hang? Could you name a few games you've tried that worked previously and if you downloaded them via PackMan? I know I've fixed a lot of bugs that were breaking games on 3.x/4.x recently in the 2.73 beta , ...
by sirbod
Thu Jun 18, 2020 5:26 pm
Forum: 32-bit acorn software: other
Topic: Patching Wizzo into RO3.1 ROMs
Replies: 5
Views: 377

Re: Patching Wizzo into RO3.1 ROMs

[I actually had a look at that, but I was under the impression it wasn't quite working -- ROM checksums being bad and so forth. Would it work for tacking Wizzo onto the end of the ROM -- and increasing the ROM size to 4MB if needed? Thanks Phil I did some updates a few month back and think it's mos...
by sirbod
Tue Jun 16, 2020 6:06 am
Forum: 32-bit acorn software: other
Topic: Patching Wizzo into RO3.1 ROMs
Replies: 5
Views: 377

Re: Patching Wizzo into RO3.1 ROMs

This is where my RISC OS 3.20 builder would come in handy. If I can ever find the time, I should put a WIMP front end onto it, so folk can roll their own RISC OS builds.
by sirbod
Mon Jun 15, 2020 7:14 pm
Forum: 32-bit acorn hardware
Topic: Upgrading VRAM 1MB->2MB
Replies: 14
Views: 837

Re: Upgrading VRAM 1MB->2MB

I'm also interested to read in the TRM that VIDC can actually address 8MB of RAM and that even with a 2MB load, it's only utilising half the available bandwidth, if I'm understanding it correctly. A 4MB VRAM module would be a tasty upgrade if it's viable. Now that is interesting. If anyone manages ...
by sirbod
Mon Jun 15, 2020 6:57 pm
Forum: 32-bit acorn software: other
Topic: Patching Wizzo into RO3.1 ROMs
Replies: 5
Views: 377

Re: Patching Wizzo into RO3.1 ROMs

philpem wrote:
Mon Jun 15, 2020 8:40 am
I was wondering if it was possible to patch either the "updated ADFS 2.68"
ADFS 2.68 is smaller than ADFS 2.67 (RISC OS 3.11), so just overwrite it in the ROM.

You'll need to fixup the CRC though, other it will fail to boot.
by sirbod
Fri Jun 12, 2020 10:28 pm
Forum: 32-bit acorn software: classic games
Topic: Looking for a tank game I remember
Replies: 8
Views: 295

Re: Looking for a tank game I remember

The second disk contains the later levels, which from memory are directly read from the disc via ADFS_DiscOp
by sirbod
Sun Jun 07, 2020 7:46 am
Forum: 32-bit acorn hardware
Topic: Acorn "POST box" display adaptor (0086,804)
Replies: 95
Views: 5297

Re: Acorn "POST box" display adaptor (0086,804)

Nice, looks really professional.

As I said back in May, I could make use of one of these to help diagnose my A5000. I've managed to fix all my Acorn machines except that one, which stubbornly refuses to POST.
by sirbod
Sun Jun 07, 2020 7:36 am
Forum: 32-bit acorn software: other
Topic: Is there an archiving project for RISC OS applications?
Replies: 12
Views: 1482

Re: Is there an archiving project for RISC OS applications?

I seem to have missed this thread the first time round. JASPP wasn't setup with the intention of just archiving games, I just personally concentrated on games as there was a lot of development work involved in getting them to run on modern machines. There were several points I made up front, when I ...
by sirbod
Tue Jun 02, 2020 4:25 pm
Forum: 32-bit acorn software: other
Topic: Is software for 32bit Acorn hardware dead?
Replies: 13
Views: 784

Re: Is software for 32bit Acorn hardware dead?

presumably you'd need another emulator within RISC OS 5 to run the older games You could use emulation, but a better option would be to use ADFFS and download games JASPP has the rights to release via PackMan. Update RISC OS on your Pi, as per the Pi requirements for ADFFS 2.72 and add the followin...
by sirbod
Fri May 29, 2020 10:30 pm
Forum: 32-bit acorn software: other
Topic: Volume Control in Risc OS 4.39
Replies: 4
Views: 274

Re: Volume Control in Risc OS 4.39

If KinoAmp doesn't have an inbuilt volume control, your options are somewhat limited. KinoAmp will more than likely be using 16bit sound, either as a linear driver or via SharedSound, neither or which are affected by the volume control to my knowledge. All the volume control does is set an OS variab...
by sirbod
Sun May 24, 2020 1:39 pm
Forum: 32-bit acorn software: other
Topic: Is software for 32bit Acorn hardware dead?
Replies: 13
Views: 784

Re: Is software for 32bit Acorn hardware dead?

As pointed out, 32bit folk live over on the ROOL forum. Posts here are generally about Archimedes through to RiscPC. The forum channel names are a bit misleading in this respect, in that ARM2/3 which are the bulk of the discussions here are a 26bit address bus, it's only the registers and data bus t...
by sirbod
Sun May 24, 2020 1:27 pm
Forum: 32-bit acorn hardware
Topic: A5000 intermittent fault
Replies: 32
Views: 3768

Re: A5000 intermittent fault

I tried the RO2 ROMS with LK10-14 set correctly, same issue. Also checked IC5 pin's 12/13 which are inversions of each other and toggle appropriately when Reset is held, so no issue with Rst* either.
by sirbod
Fri May 22, 2020 6:55 am
Forum: 32-bit acorn hardware
Topic: A5000 intermittent fault
Replies: 32
Views: 3768

Re: A5000 intermittent fault

I don't have EPROMS or the facility to erase them at hand, but I could pull RISC OS 2 from an A30x and try those. Those test ROMS do look useful though.

I did check the reset circuit as one of my first checks, it appeared to function correctly but I will check IC5, thanks for the tip.
by sirbod
Fri May 22, 2020 6:40 am
Forum: 32-bit acorn hardware
Topic: RPC needs 19 second rest to boot (solved)
Replies: 19
Views: 840

Re: RPC needs 19 second rest to boot

I'd take a guess at high resistance on a trace or via, possibly on the reset circuit. 19 seconds does sound like a long time for a cap, but it certainly sounds like a cap related issue.
by sirbod
Fri May 08, 2020 10:42 am
Forum: 32-bit acorn hardware
Topic: A5000 intermittent fault
Replies: 32
Views: 3768

Re: A5000 intermittent fault

Having replaced the PCF8583T with a new one, I've ruled that out as faulty. I've triple checked the traces between IOC and the CMOS and rechecked all parts in the CMOS circuit, the only one I can't check is the crystal, but I would not expect it to affect boot, only time keeping. My only hope now is...
by sirbod
Fri May 01, 2020 6:24 pm
Forum: 32-bit acorn hardware
Topic: Acorn "POST box" display adaptor (0086,804)
Replies: 95
Views: 5297

Re: Acorn "POST box" display adaptor (0086,804)

I don't suppose one of you could knock up a how to guide? With a parts list, circuit diagram and links to the less obvious parts on Farnell, or Amazon etc?

I could do with building one of these to find out why my A5000 hangs during POST.
by sirbod
Wed Apr 29, 2020 10:27 pm
Forum: 32-bit acorn hardware
Topic: A7000 floppy / HD issues
Replies: 13
Views: 2138

Re: A7000 floppy / HD issues

I finally have the A7000 working, I think! I had it running for two days on soak, then it started hanging again. I noticed that pressing very gently on the CMOS chip near pin 5 got it booting again, so it was likely to be either a faulty CMOS or dry joint. Having replaced the CMOS chip, it packed up...
by sirbod
Sun Apr 26, 2020 2:24 pm
Forum: 32-bit acorn software: other
Topic: RO600Hook folder
Replies: 2
Views: 296

Re: RO600Hook folder

Thanks...that's got it booting.
by sirbod
Sun Apr 26, 2020 6:51 am
Forum: 32-bit acorn hardware
Topic: A7000 floppy / HD issues
Replies: 13
Views: 2138

Re: A7000 floppy / HD issues

Where does R6 connect to on the A7000, is it the CMOS RAM chip? If so, was the delay due to RISC OS waiting for a response from I2C bus? I know under RO3.1, the A3000 refuses to boot if it doesn't get any response from the 8583... That might explain my A5000 hanging in POST, I’ll have to see if I c...
by sirbod
Sun Apr 26, 2020 6:42 am
Forum: 32-bit acorn software: other
Topic: Vprotect
Replies: 12
Views: 2126

Re: Vprotect

BeebMaster wrote:
Sat Apr 25, 2020 11:34 pm
Is it suitable for RISC OS 3.70?
It should work on anything above RISC OS 2.
SteveBagley wrote:
Sun Apr 26, 2020 12:21 am
there’s a particularly nasty virus by generating a service call with the hex value &DECAF or &C0FFEE
Yes, I noted those in the code when I was checking it line by line.

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