Search found 143 matches

by Kevin Edwards
Sun Nov 08, 2020 10:47 pm
Forum: 8-bit acorn software: classic games
Topic: Wizadore
Replies: 31
Views: 5610

Re: Wizadore

Yes, Chris was looking for someone to publish the game and did approach Ultimate and one or two other publishers before settling on Imagine ( Ocean ). At the time Paul Proctor was working on the BBC Micro conversions of their other games. Paul, Chris and myself all went to the same school and lived ...
by Kevin Edwards
Wed Oct 07, 2020 10:50 pm
Forum: archive submissions
Topic: Original Acorn DMOS Basic (Basic 4.0x ish) Source Code
Replies: 4
Views: 218

Re: Original Acorn DMOS Basic (Basic 4.0x ish) Source Code

hoglet, many thanks for packaging all of this stuff up!

Thanks too to Arcadian for make this happen and of course to Stuart Swales and Paul Fellows for passing on the disks and making all of this possible!
by Kevin Edwards
Wed Sep 30, 2020 10:51 pm
Forum: past all-day virtual ABugs
Topic: All-day 'Virtual' Acorn session #8, Saturday 3rd October 2020, 9am - 11pm
Replies: 80
Views: 3576

Re: All-day 'Virtual' Acorn session #8, Saturday 3rd October 2020, 9am - 11pm

It would be rude to not attend. Please add me Dave if you have a space.

Thanks!
by Kevin Edwards
Tue Sep 29, 2020 11:06 am
Forum: 8-bit acorn software: classic games
Topic: Mark Smiddy's memories of 1980s BBC Micro game development
Replies: 3
Views: 625

Re: Mark Smiddy's memories of 1980s BBC Micro game development

I have lots of memories from The Micro User days - it was a crazy place to work. Never a dull day!

The pub did feature in quite a few of those memories - extended lunches etc.

Good to hear from Mark again. I hope he is keeping well.
by Kevin Edwards
Tue Sep 29, 2020 11:00 am
Forum: 8-bit acorn software: classic games
Topic: Acorn - A World in Pixels - new book
Replies: 25
Views: 2013

Re: Acorn - A World in Pixels - new book

The cover is by Ste Pickford who I worked with at Software Creations during the 1990s.
by Kevin Edwards
Fri Sep 11, 2020 11:27 am
Forum: past weeknight 'developer' sessions
Topic: Weeknight 'Virtual' Dev session #2, Thursday 10th September 2020, 7pm - 10pm
Replies: 55
Views: 2856

Re: Weeknight 'Virtual' Dev session #2, Thursday 10th September 2020, 7pm - 10pm

I'm looking forward to catching up with some of the presentations I missed. The ones I saw were very inspiring and it's great to see people still developing for the Atom, Beeb, Electron and Archimedes. Kieran, your 'introduction to timer interrupts' was superb! I remember trying to work out this stu...
by Kevin Edwards
Wed Sep 02, 2020 8:42 pm
Forum: 8-bit acorn software: classic games
Topic: Mark Smiddy's memories of 1980s BBC Micro game development
Replies: 3
Views: 625

Re: Mark Smiddy's memories of 1980s BBC Micro game development

I worked with Mark BITD at the crazy Micro User offices in Hazel Grove and remember some of those early games he produced - especially Sea Wolf.
We both had our early games published by Optima Software, which was owned by Europress / Database Publications.
Please say hello to him!
by Kevin Edwards
Wed Sep 02, 2020 1:36 pm
Forum: 8-bit acorn hardware
Topic: Questions for Jon Thackray about the BBC Micro O.S. Rom
Replies: 29
Views: 1402

Re: Questions for Jon Thackray about the BBC Micro O.S. Rom

Jon, please tell us about the history of Acheton and what inspired you to write it. Did you write any other adventures that possibly didn't see the light of day? Also, have you heard of an adventure game called 'Search for The Lost Orb' - author unknown at present. Possibly by someone at Acorn/Acorn...
by Kevin Edwards
Fri Jun 26, 2020 9:50 pm
Forum: 8-bit acorn hardware
Topic: 8271 disc controller de-cap and craziness -- do not try this at home!
Replies: 449
Views: 18858

Re: 8271 disc controller craziness -- do not try this at home!

Not described or documented I'm afraid. I wish i had kept the notes and disks too...not discovered them yet during my archiving sessions. It used various different techniques to defeat all of the disk copiers around at that time - Copy-All, Vector2, Disk Duplicator etc. I can't remember all of the d...
by Kevin Edwards
Fri Jun 26, 2020 9:02 pm
Forum: 8-bit acorn hardware
Topic: 8271 disc controller de-cap and craziness -- do not try this at home!
Replies: 449
Views: 18858

Re: 8271 disc controller craziness -- do not try this at home!

Great article, Chris.

I do have a soft spot for the 8271. I wrote a couple of articles in The Micro User about it too.

I wish i'd been able to release my disk protection system too..unfortunately no one could duplicate it!
by Kevin Edwards
Fri Jun 26, 2020 8:56 pm
Forum: introduce yourself
Topic: Hello from Manchester
Replies: 22
Views: 1674

Re: Hello from Manchester

Welcome, Dean!

You must come round and help me sort out my old Beeb once this pandemic is over!
by Kevin Edwards
Sat May 02, 2020 4:43 pm
Forum: 8-bit acorn software: classic games
Topic: Imagine /Ocean
Replies: 2
Views: 722

Re: Imagine /Ocean

Basically, what Dave said. Chris Roberts and Peter Johnson did many games for Ocean/Imagine and US Gold. Peter was incredibly prolific! However, sales were not great and the Beeb/Electron was not a priority for them, especially when the 16-bit machines arrived. I can add that Ocean did have an in-ho...
by Kevin Edwards
Thu Feb 20, 2020 11:21 pm
Forum: 8-bit acorn software: classic games
Topic: Nightshade protection [technical]
Replies: 175
Views: 66963

Re: Nightshade protection [technical]

Looking at the 8271 'formatter' code it is very apparent that it isn't formatting, but writing data instead. I think my memory has lost the detail over the last 35 years! My original intention was to format the disk, but that required a bit more work in the NMI routine supplying CHRN values, so I pr...
by Kevin Edwards
Fri Feb 07, 2020 8:30 pm
Forum: 8-bit acorn software: classic games
Topic: Nightshade protection [technical]
Replies: 175
Views: 66963

Re: Nightshade protection [technical]

LOL.

There is an 8271 disk formatted in there somewhere - in one of the later decoder sections IIRC.

I also re-direct the BREAK vector so that it carries on writing when you panic and try to stop it. :lol:
by Kevin Edwards
Mon Sep 30, 2019 7:18 pm
Forum: programming
Topic: Kevin Edwards assembler series in Micro User
Replies: 15
Views: 4095

Re: Kevin Edwards assembler series in Micro User

Awesome!

Many thanks, Chris!
by Kevin Edwards
Thu Sep 19, 2019 11:03 pm
Forum: 8-bit acorn software: classic games
Topic: Game software protection list ( Kevin Edwards )
Replies: 32
Views: 2667

Re: Game software protection list ( Kevin Edwards )

Yes, I always had a bit of fun filling those free page boundry bytes with messages for friends and hackers alike.

"Hi BTW"

That's for a good friend of mine, 'Boris The Wombat'.
by Kevin Edwards
Wed Sep 18, 2019 10:07 pm
Forum: 8-bit acorn software: classic games
Topic: Nightshade protection [technical]
Replies: 175
Views: 66963

Re: Nightshade protection [technical]

Cool. Glad it loaded OK.

Here's my original set of tapes - both never used!
DSC_0143_small.jpg
by Kevin Edwards
Wed Sep 18, 2019 10:01 pm
Forum: 8-bit acorn software: classic games
Topic: Game software protection list ( Kevin Edwards )
Replies: 32
Views: 2667

Re: Game software protection list ( Kevin Edwards )

I must admit I can't remember anything about the Stryker's Run protection. Sounds like it only had a single decoder and some filename mangling - something I didn't usually do.
by Kevin Edwards
Wed Sep 18, 2019 8:40 pm
Forum: 8-bit acorn software: classic games
Topic: Nightshade protection [technical]
Replies: 175
Views: 66963

Re: Nightshade protection [technical]

Does it run OK?
by Kevin Edwards
Wed Sep 18, 2019 8:38 pm
Forum: 8-bit acorn software: classic games
Topic: Game software protection list ( Kevin Edwards )
Replies: 32
Views: 2667

Re: Game software protection list ( Kevin Edwards )

From what I have been told, the people that tried seriously to hack my protection resorted to using some kind of modified OS ROM and/or hardware device. Some were successful, but most failed. Having multiple decoders made it a hard slog - especially when you reached the end and found out that it had...
by Kevin Edwards
Mon Sep 16, 2019 6:58 pm
Forum: 8-bit acorn software: classic games
Topic: Game software protection list ( Kevin Edwards )
Replies: 32
Views: 2667

Re: Game software protection list ( Kevin Edwards )

To be fair, the work I did for the Superior Software disk system wasn't really about protection, but making the disks dual-format instead - ie it would load on 40 or 80 track drives so there was no need to sell two disk versions. In terms of decoders, encryption etc, there was very little indeed so ...
by Kevin Edwards
Sun Sep 15, 2019 10:13 pm
Forum: 8-bit acorn software: classic games
Topic: Game software protection list ( Kevin Edwards )
Replies: 32
Views: 2667

Re: Game software protection list ( Kevin Edwards )

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 think I only used it about four times ( Knight Lore, Alien 8, Lunar Jetman and Nightshade ?). Bit of a guess with those titles to be ho...
by Kevin Edwards
Sun Sep 15, 2019 10:07 pm
Forum: 8-bit acorn software: classic games
Topic: Game software protection list ( Kevin Edwards )
Replies: 32
Views: 2667

Re: Game software protection list ( Kevin Edwards )

I generally dedicated more time to games written by fellow school friends - Paul Proctor ( who wrote most of the Ultimate Play the Game titles ) and Chris Roberts ( Wizadore, Match Day, Stryker's Run ). When time was tight, and a quick turn-around was required, a more simplistic protection system wo...
by Kevin Edwards
Sun Sep 15, 2019 8:50 pm
Forum: 8-bit acorn software: classic games
Topic: Game software protection list ( Kevin Edwards )
Replies: 32
Views: 2667

Re: Game software protection list ( Kevin Edwards )

Hi Rich, IIRC I developed B+/Master friendly versions of the en/decoders that didn't include any ROM address references. Can't remember if i used them for certain on Stryker's Run or if I fell back on 'simplistic' decoders. The story behind Star Clash is more interesting. Basically, I was approached...
by Kevin Edwards
Sun Sep 15, 2019 8:36 pm
Forum: 8-bit acorn software: classic adventure games
Topic: Search for the Lost Orb
Replies: 22
Views: 4294

Re: Search for the Lost Orb

Thank you for your hard-work. Sorry I couldn't provide any more information. It looks like the author will remain a mystery!
by Kevin Edwards
Sun Sep 15, 2019 8:17 pm
Forum: 8-bit acorn software: classic games
Topic: Game software protection list ( Kevin Edwards )
Replies: 32
Views: 2667

Game software protection list ( Kevin Edwards )

Hi, I recently started compiling a list of BBC Micro and Electron games that I protected - TAPE versions. I've reached the point where I think it's almost complete but have, no doubt, forgotten a few. I did this work 30 to 35 years ago and my memory is not as good as it once was. I would be very gra...
by Kevin Edwards
Tue Apr 09, 2019 2:22 pm
Forum: 8-bit acorn software: classic games
Topic: Lunar Jetman protection
Replies: 39
Views: 4497

Re: Lunar Jetman protection

I uploaded a video of Lunar Jetman being assembled from the original source code - only 9 bytes free!

https://www.youtube.com/watch?v=Eh6lgIx5By0
LJASM2.jpg
by Kevin Edwards
Sun Mar 03, 2019 9:48 pm
Forum: 8-bit acorn software: classic games
Topic: Galaforce BBC Micro 6502 source code now available
Replies: 4
Views: 1497

Galaforce BBC Micro 6502 source code now available

Hi, I have just released the 6502 source code for my BBC Micro game, Galaforce, from 1986. This was taken from the original master disks and adapted to build using BeebAsm on a PC. I hope this gives some insight into how games were made in the 1980s! You can find the details on my Twitter account:- ...
by Kevin Edwards
Fri Feb 08, 2019 7:51 pm
Forum: 8-bit acorn software: classic games
Topic: Lunar Jetman protection
Replies: 39
Views: 4497

Re: Lunar Jetman protection

It's quite amazing how I still remember most of this code from over 33 years ago - written when i was only 19. I wish my memory was as good now as it was then!

So BeebEM appears to have some issues with its 6522 TIMER emulation? I guess it's based on a very different code-base than b-em?

Kevin.
by Kevin Edwards
Thu Feb 07, 2019 11:24 pm
Forum: 8-bit acorn software: classic games
Topic: Lunar Jetman protection
Replies: 39
Views: 4497

Re: Lunar Jetman protection

Here's one of mine using the original code:-
LJRUN2.png

Go to advanced search