Search found 1606 matches

by Pernod
Thu Sep 19, 2019 8:59 pm
Forum: software: other
Topic: Torch MCP Versions
Replies: 0
Views: 30

Torch MCP Versions

There are various versions of the Torch MCP ROM, each followed by a 2 or 3 character code. I'm trying to document the variants and to determine what the code means. Some of this is already know from http://mdfs.net/System/ROMs/Torch/TORCH.TXT Known MCP versions: MCP 1.01 (AB) - Unicorn? MCP 1.01 (AI...
by Pernod
Wed Sep 18, 2019 10:46 pm
Forum: archive submissions
Topic: Torch Model 725
Replies: 0
Views: 48

Torch Model 725

Thanks to Jules Richardson here are the ROMs from a Torch Model 725. This is basically a BBC B with a Torch 68000/Z80 Atlas board. There are four Torch specific ROMs in this machine: IC52 - HN613128PB05 (BASIC2) IC88 - Torch ROM: ECO 3.35K (DNFS) IC100 - Torch ROM: Unix host V1.00 IC101 - Torch ROM:...
by Pernod
Wed Sep 18, 2019 4:09 pm
Forum: hardware
Topic: Casper 68000 Co-Pro
Replies: 21
Views: 3252

Re: Casper 68000 Co-Pro

jgharston wrote:
Wed Sep 18, 2019 3:58 pm
I made a start: http://mdfs.net/Info/Comp/Torch/
The 68000 stuff is still humungous BMP files that need stitching together.
I'm currently emulating them so anything is better than guesswork, can you upload somewhere for me to grab?
by Pernod
Wed Sep 18, 2019 12:28 pm
Forum: hardware
Topic: Casper 68000 Co-Pro
Replies: 21
Views: 3252

Re: Casper 68000 Co-Pro

jgharston wrote:
Thu Dec 18, 2014 4:31 pm
I also have the schematics for the Atlas 68000 card. That used something called a AM2950 to talk to the BBC.
Did these ever get scanned?
by Pernod
Wed Sep 18, 2019 11:00 am
Forum: upcoming and recent events & exhibitions
Topic: Cambridge Sept 2019 archiving thread
Replies: 35
Views: 971

Re: Cambridge Sept 2019 archiving thread

Here's my final wishlist of items I'd like to archive (with Phill's assistance) this weekend: Hardware: CH33145 System 3 6809: FLEX discs? CH16709 Torch Model No.301 CH42476 Solidisk PC-Plus CH51453 BarryBox (internal photos only) CH49512 Acorn BBC Master Compact Prototype CH35201 Hektor1 CH2142 Hek...
by Pernod
Wed Sep 18, 2019 10:20 am
Forum: for sale / freebies
Topic: WANTED: Hegotron Grafpad II ROM
Replies: 6
Views: 143

Re: WANTED: Hegotron Grafpad II ROM

Is there a list of hardware / software that are considered important historically and haven’t been preserved? I know about the MIA games list but are there equivalent ones for hardware or non-games software? There's no list, but in general if you search the web or forum for an item and find very li...
by Pernod
Tue Sep 17, 2019 10:47 am
Forum: for sale / freebies
Topic: WANTED: Hegotron Grafpad II ROM
Replies: 6
Views: 143

Re: WANTED: Hegotron Grafpad II ROM

If you have the Grafpad I'd be interested in seeing photos and a scan of any manuals and overlays if possible?
by Pernod
Tue Sep 17, 2019 10:13 am
Forum: software: other
Topic: E00 DFS for 8271 / 1770 controllers
Replies: 9
Views: 280

Re: E00 DFS for 8271 / 1770 controllers

Thanks for that info. Do you know if that DFS runs in a standard SWRam bank, or does it rely on its own special private RAM that gets switched in and out by the DFS? It's an 8K ROM with 2K RAM mapped above the ROM in the same bank, so should just work from SWR. Attached the ROM for you to try. Ther...
by Pernod
Tue Sep 17, 2019 9:47 am
Forum: software: other
Topic: E00 DFS for 8271 / 1770 controllers
Replies: 9
Views: 280

Re: E00 DFS for 8271 / 1770 controllers

For the 8271 there's the MRM E00 DFS, see viewtopic.php?f=4&t=11633&p=224870#p224870.
by Pernod
Tue Sep 17, 2019 9:29 am
Forum: for sale / freebies
Topic: WANTED: Hegotron Grafpad II ROM
Replies: 6
Views: 143

Re: WANTED: Hegotron Grafpad II ROM

I don't have the physical ROM(s), but the attached images may be useful.
by Pernod
Sun Sep 15, 2019 11:45 pm
Forum: software: classic games
Topic: Game software protection list ( Kevin Edwards )
Replies: 32
Views: 760

Re: Game software protection list ( Kevin Edwards )

The 'high-point' being Nightshade and Lunar Jetman which I believe were the nastiest! I don't think anyone would disagree with this. I decided to drop the continuous stream loader as I had some feedback that it was problematic for some people and not very user-friendly when load-errors occured. I t...
by Pernod
Sun Sep 15, 2019 8:57 pm
Forum: software: classic games
Topic: Game software protection list ( Kevin Edwards )
Replies: 32
Views: 760

Re: Game software protection list ( Kevin Edwards )

I can't think of anything to add to your list, it already includes a few that I didn't know were yours. Were there different requirements made when you implemented the protection? The Ultimate titles progressively getting more complex, but the later released US Gold titles (Bounty Bob, Tapper, etc.)...
by Pernod
Sat Sep 14, 2019 10:10 pm
Forum: software: other
Topic: Arabic
Replies: 4
Views: 217

Re: Arabic

gtoal wrote:
Sat Sep 14, 2019 9:44 pm
It's weird - it looks like the rom called ARABIAN-C is what I remember working on, and the International Rom only contains the arabic font but not the screen reversal stuff.
I've re-attached the ROMs to my previous post to also include MOS 5.11.
by Pernod
Sat Sep 14, 2019 9:08 pm
Forum: software: other
Topic: Arabic
Replies: 4
Views: 217

Re: Arabic

So was the Arabic ROM a commercial release, or pre-installed in machines for those regions? Didn't Watford also do an Arabic ROM, was this the same?

Attached the ROMs from Chris Whytehead's machine for reference.
by Pernod
Sat Sep 14, 2019 5:16 pm
Forum: software: other
Topic: Acornsoft termulator
Replies: 3
Views: 151

Re: Acornsoft termulator

Master Version: https://stardot.org.uk/forums/viewtopic.php?t=11756 Original (I think?): http://mdfs.net/System/ROMs/Comms/TERMUL100 I remember there was a long search for the Master version, but these two are identical! The copy at flaxcottage.com is the same too. I don't think I've ever found any...
by Pernod
Fri Sep 13, 2019 11:29 pm
Forum: emulators
Topic: MAME: Click (and other large ROMs)
Replies: 93
Views: 5182

Re: MAME: Click (and other large ROMs)

The Mega 256 wasn't obvious at first, always reporting 000K and never seemingly testing for any of the RAM, so no clues as to how it was supposed to be paged. I had the flyer from https://www.4corn.co.uk/archive/showpdfs/10%20Acorn%20User%20July%201887%20-%20Barbican/Solidisk%20-%20The%20Master%20Me...
by Pernod
Fri Sep 13, 2019 6:06 pm
Forum: emulators
Topic: MAME: Click (and other large ROMs)
Replies: 93
Views: 5182

Re: MAME: Click (and other large ROMs)

So found the ROM for the Solidisk Mega 256 cartridge.

The cartridge contains the 8K Mega ROM and 256K RAM, not finding the RAM yet.
0035.png
To be continued ...
by Pernod
Fri Sep 13, 2019 5:16 pm
Forum: archive requests
Topic: Solidisk Master Mega 256 ROM
Replies: 1
Views: 113

Re: Solidisk Master Mega 256 ROM

Now found, in a previously shared large collection of assorted ROMs.

Looks like a cut down version of the Solidisk Manager ROM.
by Pernod
Fri Sep 13, 2019 12:55 pm
Forum: archive requests
Topic: Solidisk Master Mega 256 ROM
Replies: 1
Views: 113

Solidisk Master Mega 256 ROM

Looking for the Mega ROM from the Solidisk Master Mega card, see http://chrisacorns.computinghistory.org ... ga256.html.
by Pernod
Fri Sep 13, 2019 10:42 am
Forum: emulators
Topic: MAME: Click (and other large ROMs)
Replies: 93
Views: 5182

Re: MAME: Click (and other large ROMs)

Updated the technical detail of the Master Smart Cartridge at https://stardot.org.uk/forums/viewtopic.php?f=4&t=14384&p=247421#p247421. This is now fully implemented. I'm not aware of any other cartridges for the Master that contain additional circuitry. Currently supported are: ABR AQR Click Master...
by Pernod
Wed Sep 11, 2019 2:05 pm
Forum: emulators
Topic: MAME: Click (and other large ROMs)
Replies: 93
Views: 5182

Re: MAME: Click (and other large ROMs)

The implementation needs some work, but looking good:
0023.png

This is returning video data for empty sockets.
by Pernod
Wed Sep 11, 2019 10:05 am
Forum: emulators
Topic: MAME: Click (and other large ROMs)
Replies: 93
Views: 5182

Re: MAME: Click (and other large ROMs)

How does your emulator respond to a read from an empty bank? I assume it just returns a '0'? This is probably not strictly correct, and this may be what is tripping up the code (although I would expect the code to be reporting ROM instead of RAM in this case). Instead it may be more correct to retu...
by Pernod
Wed Sep 11, 2019 1:29 am
Forum: emulators
Topic: MAME: Click (and other large ROMs)
Replies: 93
Views: 5182

Re: MAME: Click (and other large ROMs)

I wonder if the MR8000 Master Cartridge is actually using this stray capacitance phenomenon to determine an Empty slot that you're not able to emulate particularly easily? Yeah, definitely seems to be the case, but why make it so complicated? As the cartridge has a write protect switch for the RAM ...
by Pernod
Tue Sep 10, 2019 7:22 pm
Forum: emulators
Topic: MAME: Click (and other large ROMs)
Replies: 93
Views: 5182

Re: MAME: Click (and other large ROMs)

Next is the MR8000 Master Cartridge from Peartree. 0014.png This is basically 64K RAM in a cartridge, with switch to select which 32K is enabled. Comes pre-installed with the RAM Utils. The problem is that it's detecting empty slots as ram. Banks 2,3,8 should all be reporting 'Empty socket?' Here's ...
by Pernod
Tue Sep 10, 2019 6:21 pm
Forum: hardware
Topic: Hmm.. was there ever an 8" floppy drive for the BBC?
Replies: 39
Views: 1082

Re: Hmm.. was there ever an 8" floppy drive for the BBC?

gtoal wrote:
Tue Sep 10, 2019 5:34 pm
Could some kind soul please extract the contents of D1000.IMG and D1000B.IMG from http://gtoal.com/bbc/ ?
Just rename them to .ssd and mount in BeebEm, then use Edit->Export Files from Disc.

The DNFS30 ROM image is the standard DNFS.
by Pernod
Tue Sep 10, 2019 10:58 am
Forum: emulators
Topic: MAME: Click (and other large ROMs)
Replies: 93
Views: 5182

Re: MAME: Click (and other large ROMs)

Nice detective work =D> =D> =D> I guess it's relatively easy to obfuscate by jumbling up both the data and address lines! Edit: I wonder if the swapping of D1 & D2 was deliberate, or perhaps a PCB routing error that was corrected in the ROM? Looks like Phill already knew this many years ago, see ht...
by Pernod
Tue Sep 10, 2019 2:17 am
Forum: emulators
Topic: MAME: Click (and other large ROMs)
Replies: 93
Views: 5182

Re: MAME: Click (and other large ROMs)

I'd always thought the Master version of the Click cartridge was missing from the haul of Slogger ROMs, all ROM files named CLICK were the 32K Electron version. Going back to photos of the Click Master ROM I was surprised to see it's only 16K, and versions 1.00 and 1.01 should've been dumped. Back t...
by Pernod
Sun Sep 08, 2019 10:24 pm
Forum: emulators
Topic: MAME: Click (and other large ROMs)
Replies: 93
Views: 5182

Re: MAME: Click (and other large ROMs)

I've been updating the Master cartridge emulation to bring it into line with the Electron, in order to support cartridges such as ABR, AQR, etc. This means I can finally take a look at the Master Smart Cartridge from Morley/Care Electronics: 0012.png It contains a 16K ROM which is split to occupy th...
by Pernod
Sat Sep 07, 2019 11:06 am
Forum: archive requests
Topic: Archimedes Podule ROMs
Replies: 1
Views: 98

Archimedes Podule ROMs

Is there any effort to preserve/archive the ROMs that came on many of the podules for the Archimedes? I won't be emulating these anytime soon but I'd at least like to see a collection that I can make use of when the time comes. The only podule ROMs that I'm aware of having been dumped are: Acorn Ato...
by Pernod
Thu Sep 05, 2019 4:12 pm
Forum: software: other
Topic: Software name escapes me
Replies: 6
Views: 270

Re: Software name escapes me

Maybe TED (TeletextEDitor) from Watford? See viewtopic.php?f=4&t=14384&start=30#p224189 for screenshots.