ADRHEXADRNAMEDescriptionshadowOS
635 $027BSTICK3Joystick 4 PORTB A

This denotes the direction of Joystick 4, where 15 means "centered". It is the higher nibble of PORTB 54017 $d301. Joystick 4 is only available on ATARI 400/800 machines. In XL and XE OS's this register has the same content as STICK1.

dec left right
up1014 6
1115  7
down 913 5

hex left right
up$0A$0E$06
$0B$0F$07
down$09$0D$05

bin left right
up101011100110
101111110111
down100111010101

see also Controller topics

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