IP2022 User’s Manual—Instruction Set Architecture www.ubicom.com 83 Figure 3-13  Stack Operation on Subroutine Return For  program  bugs  involving  stack  underflow,  the  instruction  at
word  address  0xFFFF  can  be  used  to  jump  to  an  appropriate
handler.   For   example,  system   recovery   may   be   possible   by
jumping to the reset vector at word address 0xFFF0. 515-011.eps Stack 1 Stack 2 Program Counter (15:0)   Stack 16 Contents
Loaded with 0xFFFF Stack 3 Stack 4 Stack 5 Stack 6 Stack 7 Stack 8 Stack 9 Stack 10 Stack 11 Stack 12 Stack 13 Stack 14 Stack 15 Stack 16