Nevryon (1990) (The Fourth Dimension)

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JonAbbott
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Joined: Thu Apr 11, 2013 12:13 pm
Location: Essex
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Nevryon (1990) (The Fourth Dimension)

Post by JonAbbott »

Image Nevryon (1990) (The Fourth Dimension)

ID: 10261
Version: Unknown
Developer: Graeme Richardson; Peter Gillett (music, sound)
Genre: Sideways Scroller; Shooter; Space
RAM: 1024

CPU compatibility: ARM2 ARM250 ARM3 ARM610 ARM700 ARM710 ARM7500 StrongARM ARMv5+
OS compatibility: 3.11 3.5x 3.6x 3.7x 4.x 5.x

Legal info: Distribution rights granted to JASPP by Graeme Richardson (as author) and David Bradforth (on behalf of APDL)


Download full archive: Image (3mb)

Download individual floppies: Image Image


Game info
To run the game use "Boot floppy" from the ADFFS Filer or install to HD:
  1. Create a !Nevryon folder on the HD
  2. Create !Nevryon.!Run with the following contents:
    ADFBootFloppy F1026101
  3. Copy !Nevryon from disc 1 as !Nevryon.!Nevryon
  4. Copy 1 as !Nevryon.1
  5. Copy Pix as !Nevryon.Pix
  6. Copy Sounds as !Nevryon.Sounds
  7. Copy !Nevryon.!Sprites as !Nevryon.!Sprites
  8. Copy the disc 1 image as !Nevryon.F1026101
  9. Insert disc 2
  10. Copy everything except PIX from disc 2 into !Nevryon
  11. Copy everything except STARTSC from PIX into !Nevryon.Pix
  12. Copy PIX.STARTSC as !Nevryon.Pix.STARTSC2
  13. Edit !Nevryon.Loader and alter:
    530 OSCLI"LOAD PIX.STARTSC2 "+STR$~(S)
    755 SYS "XADFFS_KeyDebounce"
    1240 DEF PROCID1 ENDPROC
  14. Edit !Nevryon.Multi and alter:
    215 SYS "XADFFS_KeyDebounce"
    480 DEF PROCID1 ENDPROC
  15. Edit !Nevryon.!Nevryon.Demo and alter:
    340 DEF PROCID1 ENDPROC
  16. Edit !Nevryon.!Nevryon.GAMEOVER and alter:
    1430 DEF PROCID1 ENDPROC
  17. Edit !Nevryon.!Nevryon.Loader alter:
    755 SYS "XADFFS_KeyDebounce"
    1240 DEF PROCID1 ENDPROC
  18. Edit !Nevryon.!Nevryon.Multi and alter:
    215 SYS "XADFFS_KeyDebounce"
    520 DEF PROCID1 ENDPROC
  19. Edit !Nevryon.!Nevryon.NevKey and alter:
    1620 DEF PROCID1 ENDPROC
  20. Edit !Nevryon.!Nevryon.Nevryon alter:
    1910 .JF EQUD0:.JTEST:SWI&EFFC2:CMP R0,#&FF:STREQ R0,JF:MOV PC,R14
  21. Edit !Nevryon.!Nevryon.Options and alter:
    1410 DEF PROCID1A ENDPROC
    1451 DEF PROCID1 ENDPROC
  22. Edit !Nevryon.!Nevryon.Starter and alter:
    970 DEF PROCID1 ENDPROC
  23. Edit !Nevryon.Pix.ENDING and alter:
    260 DEF PROCID1 ENDPROC

Synopsis
During The First Great Space War of 2100 reserves of titanium, the chief metallic element involved in ship construction, began to run out throughout the known universe. It was discovered by a savage alien race that the human colonised planet called Nevryon had large reserves of titanium ores.

They sent a fleet of vessels to take over this planet. They brought a large base in the form of a mobile asteroid and a huge alien beat came to oversee the action as well as a giant battle cruiser. After much resistance bases were set up on Nevryon by the aliens.

You are the people of Nevryon's last change. To succeed you must complete 4 very different missions: destroy the alien bases on the surfaces and caves of Nevryon and the asteroid, plus destroy from within both the battle cruiser and the alien beast. The aliens will attempt to attack and confuse you with every type of vessel they possess. A quite different piece of atmospheric music will be played to help you on each of the 4 quite different missions.

You begin each mission with a standard short range V5 Fighter. Anything larger would undoubtedly mean detection and death before you could even begin. However, once in the thick of the action, your fighter is able to collect and use a large array of extra weaponry and shielding. You are on your own but you will not be forgotten......

Screenshots
Image Image

Gameplay
segasonic
Posts: 27
Joined: Tue May 14, 2024 11:44 am

Re: Nevryon (1990) (The Fourth Dimension)

Post by segasonic »

Thanks for this one :D

It's not behaving on my Pi, it's playable but there are graphical issues. When the logo scrolls up on the first screen, the background is corrupted with magenta bars. The flashing cursor remains at the top left.
Then there's text missing on the menu and the options screen is blank. If you start the game, iirc it usually pops up some brief intro text or something until you press fire but this doesn't appear.
In game, the status bar doesn't appear, I still see the Start/options box where it should be.

The game itself seems fine, I can play it with an Xbox 360 controller and die. A lot.

Grabbed from Packman along with ADDFS 2.85.
JonAbbott
Posts: 3095
Joined: Thu Apr 11, 2013 12:13 pm
Location: Essex
Contact:

Re: Nevryon (1990) (The Fourth Dimension)

Post by JonAbbott »

segasonic wrote: Tue Dec 31, 2024 2:27 pm It's not behaving on my Pi, it's playable but there are graphical issues.
When I play tested on a Pi3, I did notice some background stars seem to stick on the screen, but nothing this bad. From your description it sounds like it may not have allocated the screen memory correctly.

Could you try the following and see if it makes any difference please:

Code: Select all

F12
Dir $.Apps.Games (or wherever you installed it)
Echo <22><0>
!Nevryon
EDIT: I've taken a quick look at the game code and the first thing it does is turn the cursor off, which doesn't appear to work depending on the video mode it was launched in. It also performs a very odd check on the launch mode before defining the colour palette, which doesn't look right to me as it should be changing to the mode it wants before setting the palette.

If left on demo mode it does eventually crash - I'll investigate and figure out what needs changing to fix all these issues.
Idge
Posts: 75
Joined: Wed Feb 02, 2022 9:45 pm

Re: Nevryon (1990) (The Fourth Dimension)

Post by Idge »

I also had weird graphical issues on Nevyron on a physical machine similar to this, unless I launched it in Mode 15
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