Skool Daze: Character buffer

Bit(s)	Description
0	Unused; always reset for every character.
1	Character is running continuously; reset for everyone initially; reset by the routines at $12B5, $1A04 and $27AB; set for a stampeding boy by the routines at $2797 and $2885; set for MR WACKER by the routine at $284F when he's looking for the pea-shooter.
2	Always set for teachers; set for EINSTEIN by the routine at $1F4D when he's answering a question.
3	Set for EINSTEIN by the routine at $1F4D when he's waiting to answer a question.
4, 5	Unused; always reset for every character.
6	Character is running or otherwise moving quickly; set by the routines at $0C3F and $1F4D; may be reset by the routine at $3B5E on a movement speed change.
7	If set, the routine at $3B5E restarts the command list (and then resets the flag); set by the routines at $0EB4, $1D4A and $3AD5; additionally checked by the routine at $2745.

$00A6

$02

Destination coordinates or walkabout parameters

Used by the routines at $105B, $12B5, $1A04, $27AB, $284F, $28BC and $2E13.

$00A8

$01

Number of mini-walkabouts remaining

Used by the routines at $12B5, $27AB and $2E13.

$00A9

$01

Message repetition delay counter

Used by the routines at $28BC and $2E13.

$00AA

$02

Interruptible subcommand routine address

Used by the routines at $0C3F, $0EB4, $1129, $12B5, $136F, $16E9, $1A04, $1D28, $1EE3, $1F77, $1FA0, $2241, $2387, $2E13 and $3B5E.

$00AC

$02

Bytes $6B and and $6C of the character's buffer

Holds one of the following:

address of the next character in the message being written on a blackboard or spoken
coordinates of the next location to move to in pursuit of ERIC
number of movements remaining to navigate a staircase ($AC)
walkabout or intermediate destination x-coordinate ($AC)
walkabout or intermediate destination pace counter ($AD)
number of movements remaining to wipe the blackboard ($AC)
x-coordinate of the next column of the blackboard to wipe ($AD)

Used by the routines at $09E9, $0A58, $0C3F, $0E35, $108B, $1129, $12B5, $136F, $13F3, $16E9, $1A04, $1EE3, $1FA0, $2241, $246B, $2500, $2757, $277D, $28BC, $2E13 and $BE09.

$00AE

$02

Bytes $6D and and $6E of the character's buffer

Holds one of the following:

address of the next character in the submessage being written on a blackboard or spoken
address of the routine to call after the character has found ERIC
y-coordinate of the top row of the blackboard being wiped ($AE)

Used by the routines at $0B3B, $108B, $1129, $16E9, $2387, $2A99 and $2E13.

$00B0

$02

Uninterruptible subcommand routine address

Used by the routines at $0FBA, $1CB4, $1CCB, $1D16, $1D32, $267A, $2696, $26E0, $270D, $27D2, $29C8, $2B21, $2B3F, $2B52, $2B9F, $2CA5, $2E13 and $3B5E.

$00B2

$01

Knockout delay or pellet distance counter

Holds one of the following:

counter determining how much longer the character will stay down after being punched, hit by a catapult pellet, knocked out of a chair, or tripped up by a stampeding kid
distance remaining for a catapult pellet to travel

Used by the routines at $0FBA, $1042, $29C8, $2A43, $2B52, $2BB0 and $2E13.

$00B3

$01

Pre-action animatory state

Holds a character's animatory state as it was before he is knocked over, throws a punch (ANGELFACE), or fires a catapult (BOY WONDER).

Used by the routines at $267A, $26E0, $2A43, $2B21 and $2E13.

$00B4

$01

Unused variable

Initialised to zero by the routine at $2E13, but never used.

$00B5

$01