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General Category => News & Events => Topic started by: abalore on 11:44, 20 December 20

Title: Alcon 2020 released
Post by: abalore on 11:44, 20 December 20
(https://abalore.com/images/alcon_logo.jpg)

https://abalore.com/alcon2020.html (https://abalore.com/alcon2020.html)

Alcon 2020 is a game for the Amstrad / Schneider CPC464, CPC664, CPC6128, Amstrad 464 Plus, 6128 Plus and GX4000 devices. It runs in all models since it requires only 64k of RAM. The PlayCity extension is not required but recommended to hear the full 6 in-game audio channels. A 2-button gamepad or joystick (best) is also a nice addition to enjoy the full arcade experience.
Title: Re: Alcon 2020 released
Post by: MissionComplete on 12:18, 20 December 20
It looks very impresive. Congratulations, Abalore!!!
Title: Re: Alcon 2020 released
Post by: XeNoMoRPH on 12:55, 20 December 20
(https://abalore.com/images/cover.jpg)
Nice Cover !!!  :o :o :o
Title: Re: Alcon 2020 released
Post by: Carnivius on 12:56, 20 December 20
Can someone explain how to run this in RetroVirtualMachine again please?  I selected XMEM and loaded the install disc and it did some stuffs and loads of random pixels appeared on screen for a while as it loaded then it said Ready and then I dunno what to do.
Title: Re: Alcon 2020 released
Post by: TotO on 13:02, 20 December 20
Nice Cover !!!  :o :o :o
Thanks. Just a thumb version, here. ;)
Title: Re: Alcon 2020 released
Post by: TotO on 13:06, 20 December 20
Can someone explain how to run this in RetroVirtualMachine again please?  I selected XMEM and loaded the install disc and it did some stuffs and loads of random pixels appeared on screen for a while as it loaded then it said Ready and then I dunno what to do.
Currently, RVM do not support the X-MEM with SST ROM chip, so the installer fail.
Title: Re: Alcon 2020 released
Post by: Carnivius on 13:10, 20 December 20
Currently, RVM do not support the X-MEM with SST ROM chip, so the installer fail.
oh damn. and it can't load cpr files yet either?
Title: Re: Alcon 2020 released
Post by: XeNoMoRPH on 13:10, 20 December 20
Can someone explain how to run this in RetroVirtualMachine again please?  I selected XMEM and loaded the install disc and it did some stuffs and loads of random pixels appeared on screen for a while as it loaded then it said Ready and then I dunno what to do.
Try this emulator best: http://cngsoft.no-ip.org/cpcec.htm ( supports playcity too )
Title: Re: Alcon 2020 released
Post by: TotO on 13:13, 20 December 20
@Carnivius (https://www.cpcwiki.eu/forum/index.php?action=profile;u=50) CPCEC or WinAPE in example.

On CPCEC, I recommend to use the bright palette and the X-masking for a better visual.
Title: Re: Alcon 2020 released
Post by: Carnivius on 13:31, 20 December 20
@Carnivius (https://www.cpcwiki.eu/forum/index.php?action=profile;u=50) CPCEC or WinAPE in example.

On CPCEC, I recommend to use the bright palette and the X-masking for a better visual.

Nuts. The two emulators that don't work on my PC for some reason (and when WinApe DID run years ago, it wouldn't let me use the d-pad on my controller, had to use analog stick which is crappy and for some reason I had graphic issues with it too). WinApe just sits in the process manager but never actually shows up opening a window to be usable.

And CPCEC opens a window but immediately is unresponsive.  I've tried the most recent version and ten or so of the previous versions too. :/ 
(https://i.ibb.co/crFbMfV/Image5555.png)



I've run out of time now anyways so I'll try sort stuff out later when I'm back home. Enjoy the game. :)
Title: Re: Alcon 2020 released
Post by: abalore on 14:11, 20 December 20
I added a new downloadable file to the web. It's a binary dump of the cartridge for better compatibility with M4. Load it in M4 as cartridge as usual. Remember to have the "Use only 16 slots" option checked and the "Rom number" in other than 1.

Edit: Also patched the CPR to be more compatible with M4
Title: Re: Alcon 2020 released
Post by: Carnivius on 14:32, 20 December 20
ok cool i updated drivers and CPCEC seems to work now. :)
Like Winape it seems to want me to use analog stick when I wanna use the d-pad.  I will email CNGSoft about that. :)
But yeah the game is great! Plays really well and looks/sounds nice too. :)
Title: Re: Alcon 2020 released
Post by: Mr. DVG on 14:53, 20 December 20
Can some good man kindly repeat the installation procedure of a .cpr file on m4? And will this installation conflict with other already installed .cpr files?

 P.S. - I also tried the .bin file on m4, but when I start it it says "DIRECT COMMAND FOUND" and it doesn't proceed!

The other thing I don't remember is if the files must be placed in the root of the sd card or can I also copy them into a folder?

Thanks to the availability! :-*
Title: Re: Alcon 2020 released
Post by: abalore on 15:07, 20 December 20
Can some good man kindly repeat the installation procedure of a .cpr file on m4? And will this installation conflict with other already installed .cpr files?

 P.S. - I also tried the .bin file on m4, but when I start it it says "DIRECT COMMAND FOUND" and it doesn't proceed!

The other thing I don't remember is if the files must be placed in the root of the sd card or can I also copy them into a folder?

Thanks to the availability! :-*

Let's go step by step.

1. Running a CPR in the M4 doesn't replace anything, because it's stored temporary while you run the game only, then the original contents of the M4 are restored.
2. You can run a CPR in the M4 with or without copying it to the SD
3. Without copying to the SD you need to do it using the web interface.
4. Copying to the SD you need to run a couple of commands: |CTRUP,"name_of_the_file" and then |CTR
Title: Re: Alcon 2020 released
Post by: Mr. DVG on 15:21, 20 December 20
Let's go step by step.

1. Running a CPR in the M4 doesn't replace anything, because it's stored temporary while you run the game only, then the original contents of the M4 are restored.
2. You can run a CPR in the M4 with or without copying it to the SD
3. Without copying to the SD you need to do it using the web interface.
4. Copying to the SD you need to run a couple of commands: |CTRUP,"name_of_the_file" and then |CTR
Yes, I had already performed this procedure correctly, but unfortunately it does not work, it gives me a blue screen and does not proceed... ::)
I tried installing other .cpr files for testing and they work fine!

Title: Re: Alcon 2020 released
Post by: abalore on 15:22, 20 December 20
Yes, I had already performed this procedure correctly, but unfortunately it does not work, it gives me a blue screen and does not proceed... ::)
I tried installing other .cpr files for testing and they work fine!
Did you try the .bin file in the website?
Title: Re: Alcon 2020 released
Post by: Mr. DVG on 15:30, 20 December 20
Did you try the .bin file in the website?
Yes, I downloaded the files from here: https://abalore.com/alcon2020.html

Title: Re: Alcon 2020 released
Post by: abalore on 15:31, 20 December 20
Yes, I downloaded the files from here: https://abalore.com/alcon2020.html (https://abalore.com/alcon2020.html)
Did you follow my instructions on a previous post of checking the "Use only 16 slots" option?
Title: Re: Alcon 2020 released
Post by: Mr. DVG on 15:44, 20 December 20
Did you follow my instructions on a previous post of checking the "Use only 16 slots" option?
I'd gladly do that, but the .bin file as I start it gives me the message: "DIRECT COMMAND FOUND".

So it doesn't actually start at all!
Title: Re: Alcon 2020 released
Post by: abalore on 15:55, 20 December 20
I'd gladly do that, but the .bin file as I start it gives me the message: "DIRECT COMMAND FOUND".

So it doesn't actually start at all!
How do you start the bin file? what command?
Title: Re: Alcon 2020 released
Post by: Duke on 15:56, 20 December 20
I'd gladly do that, but the .bin file as I start it gives me the message: "DIRECT COMMAND FOUND".

So it doesn't actually start at all!

You need to tick that option in the web config. This is to enable 512KB CPR files.
See the picture below (red circle).

As for the .BIN you need to upload it like it was a .CPR files, so |CTRUP,"alcon2020.v1.0.bin"

@abalore: Thanks for a fantastic game.
Title: Re: Alcon 2020 released
Post by: Mr. DVG on 16:17, 20 December 20
First of all thank you all for the answers!

To Abalore I reply that I was loading the .bin file with the RUN command ", which is why it didn't work.

Is it possible to activate the 512kb .cpr files only from the web interface?

I don't use it (and I don't even know how to use it ??? ) as I don't have a real internet line at home ... I do everything in tethering with the cell. ::)
Title: Re: Alcon 2020 released
Post by: Duke on 16:46, 20 December 20
Is it possible to activate the 512kb .cpr files only from the web interface?
You can edit the file /m4/romconfig.bin with a HEX editor (on PC maybe) and change the first byte from 0x20 (32) to 0x10 (16), that should do it.
Title: Re: Alcon 2020 released
Post by: zeropolis79 on 17:22, 20 December 20
Very good stuff.. I've played a little of this and think it's great.


When will teh physical version avaliable to buy - thanks.
Title: Re: Alcon 2020 released
Post by: abalore on 17:48, 20 December 20
Very good stuff.. I've played a little of this and think it's great.
When will teh physical version avaliable to buy - thanks.
There is no date, but I think shortly after xmas.
Title: Re: Alcon 2020 released
Post by: zeropolis79 on 17:49, 20 December 20
Thanks!
Title: Re: Alcon 2020 released
Post by: reidrac on 17:59, 20 December 20
I gave it a go and it is very good, well done!

(and hard! :D)

Thank you for the game.
Title: Re: Alcon 2020 released
Post by: DanyPPC on 18:37, 20 December 20
Many thanks for this great Xmas release !!!!
Title: Re: Alcon 2020 released
Post by: XeNoMoRPH on 21:32, 20 December 20
Currently, RVM do not support the X-MEM with SST ROM chip, so the installer fail.
We have mentioned this to the RVM programmer and he has released a DSK with a patch that works.
Title: Re: Alcon 2020 released
Post by: abalore on 21:34, 20 December 20
The X-MEM installer disk is now compatible with RVM (Retro Virtual Machine) emulator thanks to a patch provided by @jcgamestoy (https://www.cpcwiki.eu/forum/index.php?action=profile;u=1202) . The disk has been updated in the game site.
Title: Re: Alcon 2020 released
Post by: Carnivius on 22:09, 20 December 20
The X-MEM installer disk is now compatible with RVM (Retro Virtual Machine) emulator thanks to a patch provided by @jcgamestoy (https://www.cpcwiki.eu/forum/index.php?action=profile;u=1202) . The disk has been updated in the game site.
can confirm. :)
(https://i.ibb.co/yRz2T1x/Imagebbb2.jpg)
Title: Re: Alcon 2020 released
Post by: Mr. DVG on 23:38, 20 December 20
You can edit the file /m4/romconfig.bin with a HEX editor (on PC maybe) and change the first byte from 0x20 (32) to 0x10 (16), that should do it.
I tried to load the file with a hex editor, but I have never used this type of program.

What would be the register to modify? ???
Title: Re: Alcon 2020 released
Post by: WiltshireWizard on 23:51, 20 December 20
Looking forward to trying this, it was one of my favourite arcade games of the mid 80s and I used to play it a lot at Barry Island, South Wales!


Random cheat that works on the genuine arcade machines (and MAME of course) - put in your 10p, start the game and TOUCH NOTHING. Allow the first bullet to hit you. You will then restart the game with every single power-up available!


(I actually discovered this cheat myself on the cabinet they had in the In-Shops in Cwmbran around 1987 or so :-D )
Title: Re: Alcon 2020 released
Post by: Joseman on 00:22, 21 December 20
Hi
Good to know that the game is out!!
Toto showed me how thinks were going on Madrid some years ago. i was impressed!

One question, how can i play it on a cpc6128 classic (not plus) wit M4?
Regards
PS. It just worked now reuploading the CPR!
Title: Re: Alcon 2020 released
Post by: abalore on 00:30, 21 December 20
Hi
Good to know that the game is out!!
Toto showed me how thinks were going on Madrid some years ago. i was impressed!

One question, how can i play it on a cpc6128 classic (not plus) wit M4?
Regards
Hello, in a normal CPC you can still run the cartridge in the M4, the procedure is fully discussed in the first page of this topic.
Title: Re: Alcon 2020 released
Post by: GUNHED on 00:36, 21 December 20
Good thing to have the PlayCity now.  :) :) :)
Title: Re: Alcon 2020 released
Post by: pelrun on 03:20, 21 December 20
I tried to load the file with a hex editor, but I have never used this type of program.


Load /m4/romconfig.bin into the hex editor as instructed, not the game file!
Title: Re: Alcon 2020 released
Post by: Mr. DVG on 04:44, 21 December 20

Load /m4/romconfig.bin into the hex editor as instructed, not the game file!
Yes, in the end I understood it! :D   

But even after changing the registry in that file, the situation unfortunately does not change.

I restored the modified romconfig.bin file inside the SD card and when I restart the M4 it freezes and does not even boot anymore (luckily I had made a backup copy).

 At this point I will wait for the physical edition of the game to try it on the original machine!

Thanks everyone for the technical support!

P.S. - But is there anyone who produces the PlayCity card? Do you know where you can buy it?
Title: Re: Alcon 2020 released
Post by: DanyPPC on 08:59, 21 December 20
I played it on my CPC6128+ with C4CPC and the game is amazing, it's very hard but a lot addictive.


The graphics looked better on CPC +, does this game take advantage of the palette in this series?
Title: Re: Alcon 2020 released
Post by: XeNoMoRPH on 09:21, 21 December 20
How to load game with X-MEM and RVM


https://youtu.be/A4Xq3oscY0Q (https://youtu.be/A4Xq3oscY0Q)
Title: Re: Alcon 2020 released
Post by: TotO on 10:20, 21 December 20
How to load game with X-MEM and RVM
This is a strange process...  :-\
Just add the X-MEM expansion to RVM2, download the ALCON X-MEM installer DSK and RUN"INSTALL"
Title: Re: Alcon 2020 released
Post by: dragon on 13:20, 21 December 20
So it save in c4cpc? . How you made that?. So good :D.
Title: Re: Alcon 2020 released
Post by: abalore on 13:50, 21 December 20
I played it on my CPC6128+ with C4CPC and the game is amazing, it's very hard but a lot addictive.
The graphics looked better on CPC +, does this game take advantage of the palette in this series?
No, it's the standard CPC palette.
So it save in c4cpc? . How you made that?. So good :D .
If you mean saving high scores and configuration, it only happens in the physical edition in custom cartridge.
Title: Re: Alcon 2020 released
Post by: Gryzor on 14:56, 21 December 20
Daaamn why did I only see this on Monday?

I'll just watch the awesome videos again :D
Title: Re: Alcon 2020 released
Post by: Shaun M. Neary on 16:39, 21 December 20
This looks awesome!
I'll be throwing the CPR of it into my GX4000 later and giving it a good run and will write a few words about it as well :)
Title: Re: Alcon 2020 released
Post by: genesis8 on 20:00, 22 December 20
Well for the moment I am not good at the game but I only played with keyboard and emulator.
I will try it with my CPC+.
Anyway I just saw on your page before the credit the phrase about a physical edition with playcity integrated. It's nice, count me in !
Compatible I suppose with all playcity aware programs ?
Title: Re: Alcon 2020 released
Post by: Shaun M. Neary on 22:30, 22 December 20
@Nich (https://www.cpcwiki.eu/forum/index.php?action=profile;u=53) was cool enough to give me a platform to write a few words about Alcon 2020.

You can find my brief review here: http://www.cpcgamereviews.com/a/index4.html#alcon_2020 (http://www.cpcgamereviews.com/a/index4.html#alcon_2020)
Title: Re: Alcon 2020 released
Post by: fgbrain on 23:19, 22 December 20
Awesome game!!! 
(but too hard for me must say)


Thanx for the great xmas present mate...
Title: Re: Alcon 2020 released
Post by: abalore on 23:26, 22 December 20
@Nich (https://www.cpcwiki.eu/forum/index.php?action=profile;u=53) was cool enough to give me a platform to write a few words about Alcon 2020.

You can find my brief review here: http://www.cpcgamereviews.com/a/index4.html#alcon_2020 (http://www.cpcgamereviews.com/a/index4.html#alcon_2020)
Thank you! But you put a video of Corsair!  :D 
Edit: Fixed now!
Title: Re: Alcon 2020 released
Post by: asertus on 23:32, 22 December 20
Awesome game!!! 
(but too hard for me must say)


Thanx for the great xmas present mate...


You can choose the "easy" mode...  :laugh:
Title: Re: Alcon 2020 released
Post by: abalore on 23:38, 22 December 20
24 hours after the game release one guy uploaded a video finishing the game in HARD difficulty level, without picking the speed power-up.
Is the game easy? hard? It depends on the player, I guess  :D
Title: Re: Alcon 2020 released
Post by: Shaun M. Neary on 02:43, 23 December 20
24 hours after the game release one guy uploaded a video finishing the game in HARD difficulty level, without picking the speed power-up.
Is the game easy? hard? It depends on the player, I guess  :D
Also depends on how you look at it. It's pretty close to the arcade so the arcade tactics will also work.
I know for example, R-Type, a lot of the tactics I used in the arcade I was able to use on both CPC versions and they work for the most part. :)

Great accomplishment though. Be proud of this, sir! :)
Title: Re: Alcon 2020 released
Post by: Gryzor on 09:58, 23 December 20
24 hours after the game release one guy uploaded a video finishing the game in HARD difficulty level, without picking the speed power-up.
Is the game easy? hard? It depends on the player, I guess  :D

Where's that vid? Tried looking but nothing came up!
Title: Re: Alcon 2020 released
Post by: TotO on 11:02, 23 December 20
https://www.youtube.com/watch?v=Rl4pelWVnhI
Title: Re: Alcon 2020 released
Post by: Gryzor on 11:19, 23 December 20
*grabs popcorn*
Title: Re: Alcon 2020 released
Post by: Livingstone on 13:51, 23 December 20
There is a way to do an installation with M4 Board in a Z-MEM as in an X-MEM?  :blank:
Title: Re: Alcon 2020 released
Post by: TotO on 14:20, 23 December 20
There is a way to do an installation with M4 Board in a Z-MEM as in an X-MEM?  :blank:
The game do not require additional RAM. Only your M4 Board is required by loading the CPR.
May be I misunderstand your question. By the way, the Z-MEM is useless here.
Title: Re: Alcon 2020 released
Post by: rexbeng on 17:04, 23 December 20
Good effort to recreate the arcade, although I notice (from videos tbh)... that's too low a framerate! Perhaps slower than 25 frames even?
Regardless, it would be interesting to take a look and discuss the technical sides of the three latest released vertical shmups; the different priorities and design choices made, compromises etc. Maybe a bit academic on one hand, but, hey why not!?
Title: Re: Alcon 2020 released
Post by: abalore on 17:46, 23 December 20
Good effort to recreate the arcade, although I notice (from videos tbh)... that's too low a framerate! Perhaps slower than 25 frames even?
Regardless, it would be interesting to take a look and discuss the technical sides of the three latest released vertical shmups; the different priorities and design choices made, compromises etc. Maybe a bit academic on one hand, but, hey why not!?
The game draws 1 of each 3 frames, so framerate is 50/3. This is locked to be constant during all the gameplay. When unlocked, the game runs about 80% of the time at 25Hz (some areas at 50Hz). The reason for the lock is that I hate when games slow down. The priority in this game was the accuracy respect to the arcade. All enemies are the same size than the arcade and do the same movements and attacks, and also your own ship can be 5 modules width, all shooting at the same time. You can do whatever you want in the game and you hardly will see it slow down.
This is my decision for this game, in other future games maybe the priority is the frame rate, and I'll adjust enemy sizes or game mechanics to keep the frame rate over the target value. It's very easy to have constant 50hz when you have a maximum of 3 enemies of 16x16 on screen. In Alcon we have sometimes 3 enemies of 48x64 pixels plus a lot of other smaller ones, a myriad of bullets, 16 homing missiles flying around and your own ship upgraded to the max.
Title: Re: Alcon 2020 released
Post by: rexbeng on 17:45, 09 January 21
Thanks for the response! So, then, that is indeed a 17Hz game; but that sounds like the realistic option since you wanted to include as much content possible from the arcade. Still, good job on keeping everything tied to constant frame-rate and animation pacing. I personally am no fan of random-ish slow-downs or speed-ups either; or inconsistent animations.
I admit I regretfully didnt pay the needed attention (despite the coder had pointed it out) to how things moved faster in X (because of double-pixel resolution, heh) in one of my own games and am actually quite surprised by how not so many people noticed that!
Anyway, what is interesting is to get some insight on how going the cartridge way has assisted in making the game the way you did. What otherwise impossible hazards has it helped overcome. For example, would making the game for disk just mean that you'd have to 'split' it in three separately loading levels and that's it, or is there even more data being streamed while the game is running?
Title: Re: Alcon 2020 released
Post by: abalore on 17:06, 11 January 21
Thanks for the response! So, then, that is indeed a 17Hz game; but that sounds like the realistic option since you wanted to include as much content possible from the arcade. Still, good job on keeping everything tied to constant frame-rate and animation pacing. I personally am no fan of random-ish slow-downs or speed-ups either; or inconsistent animations.
I admit I regretfully didnt pay the needed attention (despite the coder had pointed it out) to how things moved faster in X (because of double-pixel resolution, heh) in one of my own games and am actually quite surprised by how not so many people noticed that!
Anyway, what is interesting is to get some insight on how going the cartridge way has assisted in making the game the way you did. What otherwise impossible hazards has it helped overcome. For example, would making the game for disk just mean that you'd have to 'split' it in three separately loading levels and that's it, or is there even more data being streamed while the game is running?
A disk version of the game is not doable with the current level of detail. The game requires many memory blocks to be accessible simultaneously. In case of doing a disk version, it would run only in 128K machines and it would need to be severely downgraded.
Title: Re: Alcon 2020 released
Post by: millim on 22:44, 26 February 21
Dear all,

well, my question is ALCON related but actually addresses the X-MEM usage. I have ported the Caprice32 emulator to the Odroid-Go (OG) handheld. Now I am interested to play also ALCON on the OG. I am searching for a software reference how the X-MEM needs to be implemented in the emulator.

Any help welcome!
millim
Title: Re: Alcon 2020 released
Post by: XeNoMoRPH on 12:16, 28 February 21
unofficial home edition:

(https://i.ibb.co/GJ2GTT3/154783610-3316089018493098-2507751736232360088-n.jpg)(https://i.ibb.co/RhycNZP/154882273-3316088741826459-2175924394876326319-n.jpg)
(https://i.ibb.co/XD5rRDG/154983994-3316089291826404-8396538556344128908-n.jpg)
Title: Re: Alcon 2020 released
Post by: Animalgril987 on 12:36, 28 February 21
Nice :D
Title: Re: Alcon 2020 released
Post by: makinavaja on 19:41, 11 March 21
You need to tick that option in the web config. This is to enable 512KB CPR files.
See the picture below (red circle).

As for the .BIN you need to upload it like it was a .CPR files, so |CTRUP,"alcon2020.v1.0.bin"

@abalore: Thanks for a fantastic game.
Hi
I cant find that binary dump for m4 boards on the website, and the cpr uploaded there doesnt works for me, even following the instructions activating the "use only 16 slots" :-/
Also,I'm having problems with the last version of ghost and goblins, so I supose its a problem with my config.


Any idea about this?
Title: Re: Alcon 2020 released
Post by: Duke on 07:11, 12 March 21
I cant find that binary dump for m4 boards on the website, and the cpr uploaded there doesnt works for me, even following the instructions activating the "use only 16 slots" :-/
To make the Alcon 2020 CPR work with M4 board, you need to remove 8 bytes from the header (which is not part of the documentation I have seen for the CPR format).
See the attached picture and use a hexeditor to remove those 8 bytes.
 -  I have made @abalore (https://www.cpcwiki.eu/forum/index.php?action=profile;u=2595) aware of this issue, but apparently wants to keep the 8 unused bytes (maybe some emulator depends on the fmt\0x20\0\0\0\0 tag).
Title: Re: Alcon 2020 released
Post by: makinavaja on 22:45, 12 March 21
To make the Alcon 2020 CPR work with M4 board, you need to remove 8 bytes from the header (which is not part of the documentation I have seen for the CPR format).
See the attached picture and use a hexeditor to remove those 8 bytes.
 -  I have made @abalore (https://www.cpcwiki.eu/forum/index.php?action=profile;u=2595) aware of this issue, but apparently wants to keep the 8 unused bytes (maybe some emulator depends on the fmt\0x20\0\0\0\0 tag).
Nice! Thanks for the info :)
Now the game boots, but only can play it several seconds until it freezes.  Also, it shows a few glitches on screen during while playing. :-/
Title: Re: Alcon 2020 released
Post by: Duke on 04:32, 13 March 21
Nice! Thanks for the info :)
Now the game boots, but only can play it several seconds until it freezes.  Also, it shows a few glitches on screen during while playing. :-/
Then it sounds like you have not ticked "use 16 slots only", to support 512KB CPR's.
Title: Re: Alcon 2020 released
Post by: Animalgril987 on 18:21, 21 March 21
To make the Alcon 2020 CPR work with M4 board, you need to remove 8 bytes from the header (which is not part of the documentation I have seen for the CPR format).
Hi Duke. Do we just change them to &0x00 or delete them, making the file 8 bytes shorter?

Alan.
Title: Re: Alcon 2020 released
Post by: GUNHED on 00:54, 22 March 21
remove
Title: Re: Alcon 2020 released
Post by: megachur on 08:30, 22 March 21
To make the Alcon 2020 CPR work with M4 board, you need to remove 8 bytes from the header (which is not part of the documentation I have seen for the CPR format).
See the attached picture and use a hexeditor to remove those 8 bytes.
 -  I have made @abalore (https://www.cpcwiki.eu/forum/index.php?action=profile;u=2595) aware of this issue, but apparently wants to keep the 8 unused bytes (maybe some emulator depends on the fmt\0x20\0\0\0\0 tag).

hello DUKE,

 in fact for me it's ok for a RIFF format like CPR...

this is only a dummy chunk 0x666D7420 = "fmt " with 0x00000000 length

so your code should treat like that :
after "RIFF" analisys, etc...

currentChunk=readU32();

switch(currentChunk) {

case 0x414D5321: // "AMS!" - CPR Idetc.breakcase // cbxx ?
etc.break

default : unkown chunk ? skip length of data

the RIFF format is very open and you can add others chunk values in the future version... Skipping unknown chunk, will ensure your code compatibility with all versions ;-) !
Title: Re: Alcon 2020 released
Post by: GUNHED on 17:50, 22 March 21
Well, my idea would be to post the binary (512 KB EPROM content), so everybody can use it.
Title: Re: Alcon 2020 released
Post by: Joseman on 03:17, 24 March 21
Hi
I post again only to say how great great great game it is.
I play several days a week and never get tired of it. The speed, the enemy IA, the graphics, music... the little things that are on all levels...
For me one of the best games on CPC, it is like being in front of an arcade machine or console.
Any news about the physical release? Is the game still being tweaked?

 Regards
Title: Re: Alcon 2020 released
Post by: Gryzor on 15:10, 24 March 21
It is great, indeed it's a gem - really love playing it.
Title: Re: Alcon 2020 released
Post by: Animalgril987 on 19:08, 27 March 21
Just crashed my 464 straight away. The screen looks like a call to MC_SET_MODE without SCR_SET_MODE, (hardware and software not in agreement about screen mode), and no keyboard response.


I have a 464 with M4. Normally with OS 1.1 in slot 31 and BASIC 1.1 in slot 0.
So I remove the 8 bytes that @Duke (https://www.cpcwiki.eu/forum/index.php?action=profile;u=1624) mentioned, in the Alcon file.
Set the M4 to 16 slots only and removed OS 1.1 and BASIC 1.1 ROM images. Reset M4 and CPC, and type |CTR. I just get the above crash.


2nd time, I couldnt even properly reinstall the ROM images via the web interface and had to delete romslots.bin and romconfig.bin from the SD card.
Title: Re: Alcon 2020 released
Post by: Animalgril987 on 17:40, 18 April 21
I tried several times to get this game to work on my 464, and it just crashed the system, with a flashing red screen and no keyboard response. :(
Title: Re: Alcon 2020 released
Post by: VincentGR on 18:14, 18 April 21
Same here, also some of my friends with M4.
Title: Re: Alcon 2020 released
Post by: ago on 12:29, 10 June 21
Hi!!!
I was experiencing the same issues with the .cpr file from the website (system crash), but I knew it could work as I was playing it last christmas using the .bin file that has been removed from @abalore (https://www.cpcwiki.eu/forum/index.php?action=profile;u=2595) 's website.
I could find the .bin file in one of my PC's, you can find it attached to this post. I can confirm it works with a M4 and a regular 6128.
Great game!! After completing this version I became a fan of the original arcade.
Title: Re: Alcon 2020 released
Post by: XeNoMoRPH on 08:54, 08 July 21
https://youtu.be/0jASWd75jZA
Title: Re: Alcon 2020 released
Post by: eto on 09:38, 08 July 21



This is just amazing... With this improvement, Alcon2020 will be (by far) the best shooter ever created for the CPC.

"The CPC can't scroll and is slow for sprites"
"one second, let me show you something"

I hope the logic behind it will be explained and shared at some point so we can see more of such awesome quality in the future. 
Title: Re: Alcon 2020 released
Post by: abalore on 13:21, 08 July 21


This is just amazing... With this improvement, Alcon2020 will be (by far) the best shooter ever created for the CPC.

"The CPC can't scroll and is slow for sprites"
"one second, let me show you something"

I hope the logic behind it will be explained and shared at some point so we can see more of such awesome quality in the future.
Hello, the logic behind can be explained in a simple sentence: it's a cartridge game.
The fact of being a cartridge game leads to two important things:
- Having 512K to store highly optimized compiled sprites and uncompressed backgrounds.
- Having all RAM free for other optimization techniques, like a triple video buffer.
As the number of (true) cartridge games increase, we'll see a number of marvels in our CPCs that we could only dream of before. By my side, I'll keep working in that way in both software and hardware, letting my cartridge adapter reach the maximum number of people.
Title: Re: Alcon 2020 released
Post by: ComSoft6128 on 13:26, 08 July 21
It looks up to the graphical level of the games I played in the Arcades in the 80's :)
Title: Re: Alcon 2020 released
Post by: norecess on 15:09, 08 July 21
A very, very, very welcomed updated @abalore (https://www.cpcwiki.eu/forum/index.php?action=profile;u=2595) .

This 25hz version is going to change EVERYTHING: the original version was too slow to be very enjoyable (only my opinion).
And to be honest, as a programmer, I always wondered why 25hz could not be reached... now I get my answer  8)

Finally, thanks for all the hard work on this. It's a really solid game conversion.
I really look forward having some blast with the update of the game :)

ps. @Xyphoe (https://www.cpcwiki.eu/forum/index.php?action=profile;u=109) did amazing work as usual with his Youtube videos ; he really knows how to communicate and share his passion!
Title: Re: Alcon 2020 released
Post by: Gryzor on 15:23, 08 July 21
Yeah that was a nice vid!
Title: Re: Alcon 2020 released
Post by: Cwiiis on 09:51, 19 August 21
It's been a while now, has there been any progress on the 25hz version? Kinda waiting on that to give this a try 🙂
Title: Re: Alcon 2020 released
Post by: Amigamstrad on 16:20, 26 August 21
The game has good look, it looks a modern Xenon 1.