Corrections for games
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Modifications to the ULA circuitry of the +3 and later +2A (and +2B) Spectrums carried out by Amstrad in 1987 caused incompatibility problems with a wide range of pre-existing games. Here follows a list of corrections for them, divided into three parts.
1. Alternative official versions compatible with the +2A/+3, available from the WOS/SC archives
(*) Cobra: here a compatible version including the correction for the bug that might be triggered at the end of the third and final level. It combines corrections by Bandit, zxbruno, jpnz and Einar Saukas.
2. Games for which there is an unofficial correction available
(*) BC's Quest For Tires: the correction works with all 128K Spectrums since the game runs natively on the 48K/+ only.
3. Other games
NOTE: there is no need to type USR0 at the BASIC command prompt if you are loading the games by means of a DivIDE/DivMMC interface, since they already work under such mode.