Recent posts

#11

Hardware / Re: Expansions Port

Last post by SerErris - Yesterday at 21:32

@Bongorocker
Ein board habe ich noch, kann ich Dir zukommen lassen. Musst dann nur selber die Koponenten besorgen. Das sind aber nur ein paar Connectoren und vor allem ganz schwierig zu bekommen: zwei Kondensatoren 

Das ding isses:
https://github.com/revaldinho/cpc_ram_expansion/wiki/CPC-Expansion-Backplane

PM, wenn Du die platine haben möchtest.

#12

Applications (CPC and CPC-related) / Re: Soundtrakker 1.0 source co...

Last post by SerErris - Yesterday at 21:29

Awesom, thank you for that.

And as always great comments   That was not master class at that time, where the assembler just had enough memory to compile it without any comments.

So nice little program but a little bit hard to understand for anyone want to learn how such a thing works 

#13

General Discussion - Introductions / Re: Why did you choose the CPC...

Last post by SerErris - Yesterday at 21:24

Lucky you, so you could right away deploy a Gotek withit 

#14

News & Events / Re: Release of Amstrad Cpc Crt...

Last post by SerErris - Yesterday at 21:12

A dump of the CPC ROM should be directly executable via calls to same, i.e. can take hex from ROM and directky decompile without issue, unless I'm misunderstanding what you say?

It is not a original Amstrad ROM, but an extension ROM from Vortex and they put it in a hardware box, that does the job.

See here for a complete reverse engineering of the hardware part here, as well as the beginning of the software dissassembly.

https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/analysis-and-reverse-engineering-of-the-x-modul-vortex/

Also more discussion on how to descramble in software in here:
https://www.cpcwiki.eu/forum/programming/disassembly-with-descrambling/

#15

Emulators / Re: ZEXALL z80 tests...

Last post by roudoudou - Yesterday at 20:32

hello

how can I try to test my z80 emulator?
is there any program to put in the memory and execute it?

thanks

it's not a Z80 pure test, zexall suite was adapted to CPC (because display uses firmware)

#16

C

Games / How to program a GTA for the A...

Last post by cwpab - Yesterday at 19:50

The interview is in Spanish, but you can use translated close captions.

The guy who created Sugar City also made CPC Soccer.

He made Sugar City "in a rush" so that the game was ready for the CPCRetroDev 2023.

The game is impressive for a one man project working "in a rush" and even has day and night (sudden) changes. He explains how he put all that into code in this video.

#17

General Discussion - Introductions / Re: Interview with Martin Pede...

Last post by Gryzor - Yesterday at 19:26

Thanks for this!

#18

News & Events / 4th AMSCII Compo

Last post by logiker - Yesterday at 18:38

The 4th AMSCII Compo just started yesterday and its submission period will last until May 29th.
It's all about Amstrad's ASCII. So, if you like to create some artwork with AMSCII, this might be something for you.
As this year, it's the 40th anniversary of Amstrad CPC this "special theme" might motivate you to draw something.

All the information you need on how to create an artwork or on how to participate can be found on the homepage:
https://logiker.com/AMSCII

#19

N

Programming / Re: Identifying firmware versi...

Last post by Nich - Yesterday at 18:09

Since lower ROM doesn't have a header, does anyone know a way to identify the installed firmware (464 spanish, 664 , 6128 danish, etc) ?

The code below is how I do it using a firmware CALL (KL PROBE ROM). It reads the first few bytes of one of the upper ROMs (in this case, BASIC) and returns the version number in H. The code copies it into the A register so that values can be compared.

Code Select Expand

ld c,0            ;C = ROM number to select
call &b915        ;Get the class and version number of the ROM
ld a,h            ;A = version number (0 = CPC464, 1 = CPC664,
                  ;2 = CPC6128, 4 = Plus)


#20

D

General Discussion - Introductions / Interview with Martin Pedersen

Last post by Dubliner - Yesterday at 17:36

I had again the great honor of being able to talk to a CPC legend.

https://www.retromaniacmagazine.com/2024/05/eran-tiempos-completamente-diferentes.html

Another great developer who wasn´t asked "in many decades" about a great game: The Vikings.