Search found 2282 matches

by Pernod
Mon Nov 30, 2020 5:37 pm
Forum: 8-bit acorn software: other
Topic: Anyone got Communicator system software? (Basic has 65816 assembler)
Replies: 94
Views: 11914

Re: Anyone got Communicator system software? (Basic has 65816 assembler)

dominicbeesley wrote:
Mon Nov 30, 2020 5:29 pm
I'll try and get a look later, I've no idea about the Communicator hardware though. Where's have you an idea of the base address for the VIA?
Thanks, the VIA is at 0x420000.
by Pernod
Mon Nov 30, 2020 2:29 pm
Forum: 8-bit acorn software: other
Topic: Anyone got Communicator system software? (Basic has 65816 assembler)
Replies: 94
Views: 11914

Re: Anyone got Communicator system software? (Basic has 65816 assembler)

Would anyone be willing to analyse the Clock module at http://mdfs.net/System/ROMs/AcornMOS/Communicat/Comm100/Modules/Clock to determine how the RTC is accessed? The RTC is a PCF8573 and has lines A0, A1, SDA, SCL, COMP that I need to work out where they go. I'm currently under the impression they'...
by Pernod
Sun Nov 29, 2020 9:09 pm
Forum: archive submissions
Topic: AMX Mouse Software
Replies: 84
Views: 7182

Re: AMX Mouse Software

Yrrah2 wrote:
Sun Nov 29, 2020 9:03 pm
The Stop Press is indeed at 10 (If I may believe Click :) ). Only it shows as one 16k ROM.
And when I switch the Elk on there is no Stop Press banner. Or do you mean something else?
I wil dump the discs later.
Thanks, that matches my emulation.
by Pernod
Sat Nov 28, 2020 7:57 pm
Forum: 8-bit acorn software: other
Topic: Why was BBC BASIC so fast?
Replies: 196
Views: 7033

Re: Why was BBC BASIC so fast?

Should you be at all interested (probably not - and it is way off-topic) Zelda - Z 80 E ditor L inker D OS A ssembler - was a modular computer system developed by BBC Engineering Designs Department from their in-house Zeus range of 4U plug-in units, plus dual 8" floppy disk drives. Many of the item...
by Pernod
Sat Nov 28, 2020 4:31 pm
Forum: 8-bit acorn emulators
Topic: MAME: How to ... ?
Replies: 64
Views: 3995

Re: MAME: How to ... ?

dominicbeesley wrote:
Sat Nov 28, 2020 3:19 pm
That looks perfect, thanks Nigel. I'm writing up a 65816 BASIC thread now, I'll include this for comparison....looks like Communicator BASIC is pretty slow!
Presume you know that MAME also supports the ReCo6502 with a 65816, configurable between 3.15MHz and 14.7MHz?
by Pernod
Sat Nov 28, 2020 2:20 pm
Forum: 8-bit acorn emulators
Topic: MAME: How to ... ?
Replies: 64
Views: 3995

Re: MAME: How to ... ?

Here's the one I'm using (possibly not the current canonical one but I want to stick with this version for comparison with existing dumps). How does this look? 0019.png I really need to re-implement the ULA as a separate device, used by both Electron and Communicator. I did a lot of work on the Ele...
by Pernod
Sat Nov 28, 2020 11:50 am
Forum: 8-bit acorn emulators
Topic: MAME: How to ... ?
Replies: 64
Views: 3995

Re: MAME: How to ... ?

dominicbeesley wrote:
Fri Nov 27, 2020 3:21 pm
The Arithmetic module must be better than it looks!
I've implemented the RTC interrupt and TIME now looks good, so if you post your memory dump that I can load into the debugger I'll re-run ClockSp for you.
by Pernod
Fri Nov 27, 2020 8:57 pm
Forum: 8-bit acorn emulators
Topic: MAME: How to ... ?
Replies: 64
Views: 3995

Re: MAME: How to ... ?

On the Electron there are two seperate 50Hz interrupts from the ULA: - the RTC interrupt (at the end of line 99) - the Display End interrupt (at the end of line 255) Each of these increments the timer, which gives you the 100Hz. Right, the Communicator currently only implements the Display End inte...
by Pernod
Fri Nov 27, 2020 7:11 pm
Forum: 8-bit acorn emulators
Topic: MAME: How to ... ?
Replies: 64
Views: 3995

Re: MAME: How to ... ?

I've just checked and the emulation is running at 100% but TIME is at 50%. I'm not sure how this is done on the Communicator is there a VIA or is it all in the ULA - anyway it looks like something isn't quite right in the emulation. I just tried SOUND 1,-15,100,10 and it sounds twice as long on the...
by Pernod
Fri Nov 27, 2020 6:52 pm
Forum: 8-bit acorn emulators
Topic: MAME: How to ... ?
Replies: 64
Views: 3995

Re: MAME: How to ... ?

Another question - possibly daft but I can't find any info on it - is there a way to get the emulation speed to show on screen. I'd like to double check that it's running at 100%. The reason I ask is that I've been scratching my head at the ClockSp test showing a more than impressive speed! I think...
by Pernod
Fri Nov 27, 2020 4:23 pm
Forum: 8-bit acorn emulators
Topic: MAME: How to ... ?
Replies: 64
Views: 3995

Re: MAME: How to ... ?

dominicbeesley wrote:
Fri Nov 27, 2020 3:09 pm
..., but the debugger did work.
Nice to see a relatively unknown feature being used. It's not something I've ever tried, but good to know it works and has a useful purpose.
by Pernod
Fri Nov 27, 2020 3:14 pm
Forum: 8-bit acorn emulators
Topic: MAME: How to ... ?
Replies: 64
Views: 3995

Re: MAME: How to ... ?

The debugger sounds like the easiest and best option. I just want to get ClockSp on there and get a baseline speed. Do you know accurate is the emulation in terms of the 65816 core etc? The 65816 is used in a handful of machines, including the SNES, so would assume it's fairly accurate. The briefca...
by Pernod
Fri Nov 27, 2020 1:32 pm
Forum: archive submissions
Topic: AMX Mouse Software
Replies: 84
Views: 7182

Re: AMX Mouse Software

My Electron has a Slogger Turbo/64k board and is fitted with an extra slogger board under the lid just above the keyboard. I didn't known anyone here actually had a working SP64 board, could you dump the SP64 ROM? We already have SP64 v1.01 but as 2x16K ROMs whereas yours looks like a single 32K. I...
by Pernod
Fri Nov 27, 2020 1:08 pm
Forum: 8-bit acorn emulators
Topic: MAME: How to ... ?
Replies: 64
Views: 3995

Re: MAME: How to ... ?

A quick question: I'd like to get BASIC programs into the Acorn Communicator emulation, what's the best way. I'm guessing I could make a ROM with them in but I'm not sure how I get the emulation to pick up an extra ROM. Failing that is there a way to paste text across from the Windows clipboard? Hm...
by Pernod
Fri Nov 27, 2020 2:11 am
Forum: archive submissions
Topic: AMX Mouse Software
Replies: 84
Views: 7182

Re: AMX Mouse Software

It's a different disc, it's the Slogger AMX Stop Press 1.9 conversion which was released some time before the SP64, I believe it should run on a basic Electron with a User Port. Interesting =D> Here's an advert from the 1991 Slogger catalogue: A M X ' S T O P P R E S S ' The most popular BBC deskto...
by Pernod
Thu Nov 26, 2020 9:44 pm
Forum: archive submissions
Topic: AMX Mouse Software
Replies: 84
Views: 7182

Re: AMX Mouse Software

I realise it's been a few years since this post but I have uncovered the Slogger Stop Press !boot disc for the Electron in my collection. It's Sloggers conversion of the AMX SP and is not an original disc. The ROMs included in the zip file are ones I found on my discs with the filename labelled for...
by Pernod
Thu Nov 26, 2020 6:20 pm
Forum: general
Topic: Today I received.....
Replies: 6056
Views: 640942

Re: Today I received.....

e668ecp wrote:
Thu Nov 26, 2020 6:00 pm
Its version 1.02 of the G-code
Currently archived are sets for 1.00, 1.02, 1.03, 1.05, 1.06, so are missing 1.01 and 1.04 if they exist.
by Pernod
Thu Nov 26, 2020 6:11 pm
Forum: 8-bit acorn software: other
Topic: Technomatic ROM image
Replies: 3
Views: 111

Re: Technomatic ROM image

You'll also need an image of the floppy that comes with it, but isn't archived anywhere yet.
by Pernod
Thu Nov 26, 2020 12:38 pm
Forum: 8-bit acorn software: other
Topic: BASIC Demo
Replies: 7
Views: 207

Re: BASIC Demo

I had one BITD which was Air On A G-String, and was the music used in the UK in adverts for Hamlet Cigars. I recall the screen slowly filled up with cigar smoke as it played. I haven't found that disc yet but it must be somewhere. It's on my disc at https://stardot.org.uk/forums/viewtopic.php?f=32&...
by Pernod
Tue Nov 24, 2020 6:09 pm
Forum: 8-bit acorn software: other
Topic: Amcom WFS 6.34b
Replies: 13
Views: 1585

Re: Amcom WFS 6.34b

e668ecp wrote:
Tue Nov 24, 2020 2:43 pm
Attached are Amcom WFS5.21 and WFS6,23B
Thanks for those :D
by Pernod
Sun Nov 22, 2020 2:37 am
Forum: acorn atom and acorn system series
Topic: theoddys.com down
Replies: 16
Views: 544

Re: theoddys.com down

I have received an EPROM with the label CP/M kaart on it, so this must be the BIOS for the Z80 board. I also received a bunch of 3.5" discs with Atom CP/M software. They should be formatted in AtomDOS format. I have to work out a way to convert them to images. Thanks, I'll see what I can do with it...
by Pernod
Thu Nov 19, 2020 9:19 pm
Forum: 8-bit acorn software: other
Topic: Amcom WFS 6.34b
Replies: 13
Views: 1585

Re: Amcom WFS 6.34b

Here they are, Amcom Client 6.14B and Amcom WFS 6.34b. Thanks. I see the versions are both suffixed with B, so am assuming this means for model B/B+. I already have a later Client ROM 6.23M which I can now assume to be intended for Master only. If anyone else has other versions then please post them.
by Pernod
Tue Nov 17, 2020 6:35 pm
Forum: 8-bit acorn software: other
Topic: Amcom WFS 6.34b
Replies: 13
Views: 1585

Re: Amcom WFS 6.34b

So three people claim to have versions of WFS, is anyone actually going to post it for reference?
by Pernod
Sun Nov 15, 2020 3:06 pm
Forum: 8-bit acorn hardware
Topic: Midwich DFS Hard Disc Host Adapter
Replies: 8
Views: 253

Re: Midwich DFS Hard Disc Host Adapter

I just had a look at the Midwich "WININIT" utility, it's in BASIC but crunched so not very easy to follow. It uses OSWORD &72 to do the disc accesses, but maybe the Midwich ROM's own OSWORD &72 implementation maps to a different controller location than ADFS? The Midwich ROM accesses &FCC0 and &FCC...
by Pernod
Sun Nov 15, 2020 12:40 pm
Forum: 8-bit acorn hardware
Topic: Midwich DFS Hard Disc Host Adapter
Replies: 8
Views: 253

Re: Midwich DFS Hard Disc Host Adapter

What type of HDD was the image taken from? Your photos show a MR522 but this is a 21MB drive whereas your image is 28MB. Just need to clarify so that I can lookup the correct CHS parameters for the drive.
by Pernod
Fri Nov 13, 2020 8:55 pm
Forum: other vintage hardware, software and languages
Topic: Voltamace/Videomaster Database Games Computer
Replies: 5
Views: 145

Re: Voltamace/Videomaster Database Games Computer

Colday wrote:
Fri Nov 13, 2020 8:23 pm
Interesting, so they seem to be on 2716 EPROM...
Looking at the list of cartridges documented in MAME, see https://github.com/mamedev/mame/blob/ma ... tabase.xml, the majority are 2K though there are a couple of 4K, and one that also has 1K RAM.
by Pernod
Fri Nov 13, 2020 5:51 pm
Forum: other vintage hardware, software and languages
Topic: Voltamace/Videomaster Database Games Computer
Replies: 5
Views: 145

Re: Voltamace/Videomaster Database Games Computer

Colday wrote:
Fri Nov 13, 2020 5:15 pm
I'll open a cartridge this evening and see what's inside.
I would imagine very little, apart from the game ROM.
by Pernod
Fri Nov 13, 2020 5:10 pm
Forum: other vintage hardware, software and languages
Topic: Voltamace/Videomaster Database Games Computer
Replies: 5
Views: 145

Re: Voltamace/Videomaster Database Games Computer

Colday wrote:
Fri Nov 13, 2020 4:28 pm
Quick question, does anyone know/remember that if I turn this on without a cartridge in, would it display anything?
There's no ROM in there so would expect a blank screen.

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