; IfsRamTrap.mu -- RamTrap.mu modified for IFS ; Copyright Xerox Corporation 1979, 1980, 1981 ; Last modified May 3, 1981 4:05 PM by Taft ; Trap handler and dispatcher for instructions that trap into ; the RAM. In the following predefinition, the tags correspond ; to opcodes 60000, 60400, 61000, 61400, ... 77400. ; Note that opcodes 60000, 60400, 61000, 64400, 65000, 67000, and 77400 ; cannot be used since control never gets to the RAM for these. ; GetFrame 61400 ; Return 62000 ; BcplUtility 62400 ; PupChecksum 63000 ; XMOps 63400 ; XBcplUtility 64000 must have IR[4:7] = 10B ; ObjCall 65400 ; STA3JSRI 66000 must have IR[6:7] = 0 ; GetNextChar 66400 ; InitVMem 74000 ; rref 74400 ; wref 75000 !37,40, TrapDispatch,,, GetFrame, Return, BcplUtility, PupChecksum, XMOps, XBcplUtility,,, ObjCall, STA3JSRI, GetNextChar,,,,,,,,,,, InitVMem, rref, wref; ; Control comes here with the instruction LCY 8 in XREG TRAP1: T_ 37; TrapDx: L_ XREG AND T, :TrapDispatch; TrapDispatch: SINK_ M, BUS, TASK, :TrapDx;