Sector Alpha is a rather rare ColecoVision title that had all of its cartridges shipped with a defect that prevented 10% of the game data from being accessed, which in turn resulted in all ROM dumps being corrupt until the issue was finally discovered in mid-2014. Not only did the game finally get a proper dump as a result, it was also discovered that a simple hack of the cart's PCB will allow the game to function as intended on real hardware.
(Source: AtariAge)
Sadly, this wasn't the only time a ColecoVision game was mass-shipped with a cartridge defect.
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Unused Code#
The code that makes the player character move and shoot in the demo is located in the uncalled data. As a result, the player character will do nothing while the demo plays (if it doesn't automatically end after starting).
Build Date#
Present at 0x24:
25-08-83(Source: Original TCRF research)