Flunky: Routine at 9BC9

9BC9: Graphic layout routine: (240) Start loop (02 / 02)

Start a loop in graphic layout data. The parameter is the repeat count. The current value of the repeat counter is stored at 6D9C and the address of the next instruction (i.e. the first instruction that is processed in each loop) is stored at 6DD9.

See also routine at 9BA5.

Used by the routine at Jump_GraphicLayoutRoutine.

Input
IX	Address of first parameter in current graphic layout data instruction

Output
B	Do-not-recalculate-display-buffer-address flag (00)
IX	Address of next graphic layout data instruction to process

9BC9

LD A,(IX+$00)

Store repeat count at R$6D94.

9BCC

LD ($6D94),A

9BCF

INC IX

Advance IX to next position in graphic layout data and store at 6DD9.

9BD1

LD ($6DD9),IX

9BD5

LD B,$00

Prepare to recalculate display buffer address.

9BD7

JP $989E

Read / process data at address in IX.