ocr: high memory A - (MemTop) static allocation - ( (BufPtr) room. for static allocation system startup blocks (MemTop)/2 + 1K system startup stack 0 - (8f KMemTop)/2 (ApplLimit) A (HeapEnd) application heap A (ApplZone) system heap globals ( (SysZone) system low memory Figure lDMacintosh Plus RAM at System Startup