[HN Gopher] Cordoomceps - Replacing an Amiga's brain with DOOM
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       Cordoomceps - Replacing an Amiga's brain with DOOM
        
       Author : naves
       Score  : 34 points
       Date   : 2025-08-05 19:00 UTC (4 days ago)
        
 (HTM) web link (mjg59.dreamwidth.org)
 (TXT) w3m dump (mjg59.dreamwidth.org)
        
       | ekianjo wrote:
       | this deserves a video at the end.
        
       | vidarh wrote:
       | Given we have AROS, that is mostly AmigaOS compatible and has an
       | ARM port, and that _also_ has a classic Amiga port, it 'd be fun
       | to see the ARM version of AROS ported to this...
        
       | Sheeplator wrote:
       | So the Amiga is a graphics card for Doom running on the Pi. Can
       | we make that general purpose? Does Linux still have Amiga
       | drivers?
        
         | mjg59 wrote:
         | I considered this and it's slightly awkward - the hardware
         | isn't memory mapped so the drivers would all need to be
         | adapted, and there's no realistic way it'd get upstream.
         | There's also the problem that the Amiga is big endian and Linux
         | on the Pi is little endian so even if you could memory map it
         | you'd still need to byte swap everything. Not literally
         | impossible, but a giant pain.
        
       | jrmg wrote:
       | Would it be possible (and/or a good idea...) to calculate the
       | best HAM approximation of the frame, rather than an EHB version?
        
         | mjg59 wrote:
         | Given there's no need to run any code on the 68K bus it's
         | probably actually possible to do the palette calculations per
         | line and use the copper to reprogram the colour registers every
         | line, getting way more colours than plain EHB without the HAM
         | side-effects
        
           | nxobject wrote:
           | "Racing the scanline"?
        
       | amiga386 wrote:
       | Like a _Vampire_ but with honest intentions. It accepts it is
       | wearing the Amiga as a hat.
        
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       (page generated 2025-08-09 23:00 UTC)