stardot.org.uk

Fairly sure my original emulator used to just output all the printer output to "printer.log"

MAP DATA (128 bytes wide, 54 high) map location &a500+ Y*128 + X = BG Block at that coords each value is an encoded BG sprite number (table at &8100) which defines a 16x32 sprite Map Row 00 A500 C9 1B 1B 1B 1B 1B 1B 1B 1B 1B 1B 1B 1B 1B 39 39 ..............99 A510 39 39 39 39 39 39 39 39 39 ...

Sprite strips for the encoded data, &9d00 + strip number * 8 encoded char row strips (each 8 bytes is stored consecutively in a char row, so is 8 vertical pairs of pixels) BG Sprite Column 01 9D00 ** ** ** ** ** ** ** ** 30 30 30 30 0F 0F 0F 0F 0000.... BG Sprite Column 02 9D10 0F 0F 0F 0F 00 00...

BG Sprite 00 8100 FC FD FC FD FC FD FC FD FC FD FC FD FC FD FC FD ................ 8110 16 16 16 16 16 16 16 16 60 60 60 60 60 60 60 60 ........```````` BG Sprite 01 8120 00 00 01 FD FC FD FC FD 60 63 00 00 01 FD FC FD ........`c...... 8130 60 60 60 63 00 00 00 00 60 60 60 60 60 60 60 60 ```c....``...

The ROM is the graphics/map..... ENCODED BG sprite DATA map byte value *32 +#&8100 e.g. sprite 0 at &8100 Col 0 Col 1 Col 2 Col 3 Col 4 Col 5 Col 6 Col 7 char row 0 FC FD FC FD FC FD FC FD (first 8 bytes) char row 1 FC FD FC FD FC FD FC FD (second 8 bytes) char row 2 16 16 16 16 16 16 16 16 ...

Note this was the c64 version of micromud I disassembled - I brought a copy off ebay years ago, with all the docs etc in it.

Disc 2 format #&0 battle messages lookup (3 bytes each) #&400 battle messages data start #&a00 room flags start (2 bytes per room,LSB of drop object room?,ROOM flags) #&d00 please don't hack this msg :) #&e00 room names lookup (3 bytes each) #&1300 room names data start #&...

Needs tidying up before I ever release it, but heres a bit Computer player message strings COMMAND=00 CHANCE=32 ( 50) MSG=04dc FLAGS=ff Hello." COMMAND=00 CHANCE=65 (101) MSG=04dd FLAGS=ff Hi!." COMMAND=00 CHANCE=98 (152) MSG=04de FLAGS=ff Hiya." COMMAND=00 CHANCE=cb (203) MSG=04df FL...

I disassembled this years ago...

For example

This does actually exist. I just never released it into public.

C# and monogame.

Cheers

Dave

I probably will disassemble something else in the future, bit busy with work at the moment though.

You never know I might one day release an updated emulator too It must be around 20 years since I first release it...

Kevin gave his blessings for me to post this, and he also said the game is 30 years old in September - I'm sure that makes everyone feel much better and not at all old!

I am interested how my labelling of things differs from his...

I sent Kevin Edwards a pm on here, if he gives his blessing, I will post the Galaforce disassembly...

Many years ago I manage to reach about Level 255 on Chuckie Egg on my Electron, I just played it one Sunday and kept going and going, and coming back to it and got to Level 255 then it crashed on me, but I don't recall 2 ducks flying about. I converted chuckie egg years ago, and then experimented a...

Oh I did quite a few including:

Chuckie egg (you can find this on bagshot row)
Citadel
Galaforce (I even rewrote this in c#/opengl - completely works - pixel perfect conversion, just no sound)
Knightlore
Jetpac
Wizadore

If I feel generous I may even stick them online one day

For what its worth, I disassembled it a while ago...

Anyone seen these?

http://www.ebay.co.uk/itm/SD-Floppy-Emu ... 6051647660

One that worked for the beeb would be nice

You could always try the old BeebInC

It's about time you did something with those disassemblies I gave you

I believe I noticed it a while back, and did post about it :) BeebInC Post subject: PostPosted: Sat Jul 22, 2006 4:35 pm Joined: Sun Mar 19, 2006 12:58 pm Posts: 97 After further dabbling I noticed that the documented "interrupt must be enabled at least 2 cycles before the end of the current in...

Mine just did this

The easiest way to get a cable in my experience is just get a modem lead from the beeb, 5 pin domino to 25 pin rs232, then just plug that into a pc null modem lead. 25/9 pin to 25/9 pin. No soldering needed

I wrote a version of repton 1 for the pc and pocket pc a few years ago. It's never been released though...

I need one

Maybe MUD 1? http://www.british-legends.com

or Eric the Viking?

I shall be there, tomorrow afternoon - my ticket arrived yesterday.

Be on the look out for the black sheep!

I should be there for at least Saturday afternoon - if my ticket arrives in time!

Whoops - was thinking about getting one

Some citadel stuff for you, I did disassemble it somewhere in the past... citadel sprite decoding routine is at &30ad, with the compressed sprites stored at &0955-&139f The display room X code is at &3423 The compressed room data is stored at &13a0-&23ff Some common room name...