Keyboard

Number	$**FE
Decimal
Short desc.	Series of specific ports that read keyboard key presses.
Bit Mask
Readable	Yes
Writable	No
Subsystem	Input

Reads keys on the keyboard depending on the upper byte of the port number.

Port upper byte	Keys affected
$7F	B, N, M, Symbol Shift, Space
$BF	H, K, J, L, Enter
$DF	Y, U, I, O P
$EF	6, 7, 8, 9, 0
$F7	5, 4, 3, 2, 1
$FB	T, R, E, W, Q
$FD	G, F, D, S, A
$FE	V, C, X, Z, Caps Shift