« Reply #15 on: May 13, 2012, 11:40:19 PM »
The best 2 Doom ports for the DC were nxDoom and later a port of ADoom. I used a controller with both.
Upgrading your CPU clock is a worth while venture too!
I have found several sites with loads of info for upgrading the DC. I am reading up on it all now. Just what I need - more projects!

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A2000 GVP 40MHz \'030, 21Mb RAM SD/FF, 2 floppies, internal CD-ROM drive, micromys v3 w/laser mouse
A1000 Microbotics Starboard II w/2Mb 1080, & external floppy (AIRdrive)
C-128 w/1571, 1750, & Final Cartridge III+