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Messages - DarrenColes

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16
HARDWARE/SYSTEMS DISCUSSION / Re: Micro Power Ltd Rom board
« on: April 06, 2018, 02:16:37 PM »
good to here you got it sorted. saves me having to try and figure it out from the pinouts :-)

17
HARDWARE/SYSTEMS DISCUSSION / Re: Micro Power Ltd Rom board
« on: April 03, 2018, 03:52:15 PM »
is there anything on the underside?

i'm guessing the board plugs into the rom socket on the motherboard underneath, since there aren't enough wires connected on the black connector to provide the data and address lines needed to address the 4k rom

i'd guess the connector is just there to pull the address lines and data lines needed to do the bank switching. it might be possible to make a guess at the address used to trigger the bank switching if we knew which pins were connected to which wires and what the pinout is of the socket that it connects to.

Darren


18
NEW MEMBERS - SIGN IN HERE PLEASE / Re: Hello Everyone...
« on: February 13, 2018, 02:00:41 PM »
that's real a shame, very saddening to see that legal issues are preventing the public from getting access to this kind of stuff even after so much time has passed.

19
NEW MEMBERS - SIGN IN HERE PLEASE / Re: Hello Everyone...
« on: January 19, 2018, 05:04:11 PM »
Hi, I remember you from the coding memories thread on EAB.

You worked on some really great 16 bit releases, in particular Amiga golden axe and MK2 spring to mind.

As I mentioned in the thread back in 2015, i'm originally from Nottingham - now living in Leicester - just up the road from the RCM :-)

Given that your ramrod discs are now recovered, will we be seeing it released publicly? There seemed to be quite an interest on EAB for quite a while.

20
COLLECTORS CORNER / Re: Unexpected Christmas Gift!
« on: December 25, 2017, 10:21:59 PM »
Love it, i had one of these in 86 as my first computer. Had it for 2 years until i got my Spectrum 128k


21
NEW MEMBERS - SIGN IN HERE PLEASE / Re: Hello all.
« on: December 08, 2017, 06:45:09 PM »
Shame you didnt feel up to introducing yourself. You were among a large contingent of Amiga fans and I have no doubt many of them would have been happy to chat (Myself included). If you feel more comfortable when its a little less busy you might want to consider popping down on a Sunday instead.

22
RCM ANNOUNCEMENTS / Re: We need a bigger boat
« on: August 27, 2017, 07:44:21 PM »
If you manage this (or when you manage this)   if you need help shifting stuff  I'm happy to offer my fetching and carrying skills again.

24
GENERAL RETRO CHIT CHAT / Re: A new conversion for the BBC Micro
« on: July 13, 2017, 02:07:04 PM »
I tried your posted browser link but I can't play on it.

can you be more specific?

25
GENERAL RETRO CHIT CHAT / Re: A new conversion for the BBC Micro
« on: July 04, 2017, 05:08:36 PM »
full source code for this project is now available here:

https://github.com/dmcoles/TrailBlazer_BBC_Micro_Conversion

Sorry there aren't too many comments. If anyone has any questions I'm happy to try and answer them.

26
GENERAL RETRO CHIT CHAT / A new conversion for the BBC Micro
« on: June 28, 2017, 05:11:09 PM »
I am very proud to present to you today, my latest project that has been in progress for the last few months. I decided to put together a conversion of the game Trailblazer https://en.wikipedia.org/wiki/Trailblazer_(video_game) to the BBC Micro.

I chose this particular game as I have pretty much zero skills in terms of graphics so it was ideal for me as the game is very simple in terms of graphics.

This game was originally designed by Mr Chip software and published by Gremlin. The ZX Spectrum port was done by the in house team at Gremlin and I used this as guide for my own version written from scratch in 100% 6502 assembler for the BBC.

During the development of this game I became aware of the Sphere of destiny games released by Audiogenic and did consider scrapping this project, in the end I decided that the games were different enough to warrant me seeing the project through to release.

Here are some of the features of the game:

  • 50 FPS scrolling/animation
  • 2 game modes
    • Arcade
    • Test (Practise)
  • 14 levels
  • 7 coloured tile types with different functions
    • Slow down
    • Speed up
    • Jump
    • Reverse controls
  • High scores and fastest times saved to disc
    • Press R on the scores screen to reset them
  • 2 Input options
    • Keyboard (usual Z, X, /, *, Enter keys)
    • Joystick

Some sample screen grabs:


















This game was developed using Beebasm assembler and a slightly modified version of B-Em. It has also been tested in BeebEm and JSBeeb. I have not tested it on real hardware so any feedback regarding this would be appreciated.


Here is a link to the game playable in the browser using JSBeeb:
https://bbc.godbolt.org/?autoboot&disc=https%3A%2F%2Fdmcoles.github.io%2Ftrailblazer%2Ftrail.ssd&model=Master#

Here is a direct link to the ssd which can be used in an emulator or transferred to disc to play on real hardware:
https://dmcoles.github.io/trailblazer/trail.ssd

27
GENERAL RETRO CHIT CHAT / Happy new year
« on: January 03, 2017, 04:33:15 PM »
Just thought I'd drop by and wish everyone here a happy new year.

even though we all like retro, we can still look forward to a happy and prosperous 2017 :-)

28
NEW MEMBERS - SIGN IN HERE PLEASE / Re: New Member - David, N Yorks
« on: December 20, 2016, 02:39:00 PM »
Cool. Acorn stuff is great - they don't get anywhere near enough coverage in the retro community.


29
will santa be there? or failing that is anyone planning to dress festively?

30
looks like its going to be a busy day. I was thinking of coming along to this with the other half but i failed to keep an eye on this thread :-(

I'll have to visit again another time. Good luck with the event

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