Through the Trap Door: Routine at 46647

46647: Graphic layout routine: (240) Start loop (2 / 2)

Start a loop in graphic layout data. The parameter is the repeat count. The current value of the repeat counter is stored at 34275 and the address of the next instruction (i.e. the first instruction that is processed in each loop) is stored at 34296.

See also routine at 46611.

Used by the routine at 46218.

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

Output
B	Do-not-recalculate-display-buffer-address flag (0)
IX	Address of next graphic layout data instruction to process

46647

LD A,(IX+0)

Store repeat count at 34275

46650

LD (34275),A

46653

INC IX

Advance IX to next position in graphic layout data and store at 34296

46655

LD (34296),IX

46659

LD B,0

Prepare to recalculate display buffer address

46661

JP 46003

Read / process data at address in IX