84PCSE:BCALLs:5596

Synopsis

Unofficial Name: SetLCDWindowAndPos

BCALL Address: 5596h

Set up the LCD window registers for a block drawing operation.

Inputs

• HL = left edge of window (starting X coordinate)
• DE = right edge of window
• B = starting Y coordinate

Outputs

• R20h (starting row) = B
• R21h (starting column) = HL
• R52h (minimum column) = HL
• R53h (maximum column) = DE

Destroys

• AF

Comments

Interrupts should be disabled before calling this routine.