IMS IMSAI 8080 User Manual page 67

BUS DEFINITION
Back Side
No.
96
97
98 SSTACK
99
100
2 18
SYMBOL NAME
SINTA INTA
SWO WO
STACK
POC Power-On Clear
GND GROUND
Mother Board
User Guide
FUNCTION
Status output signal
to acknowledge sig­
nal for INTERRUPT
request
Status output signal
indicates that the
operation in the
current machine cy­
cle will be a WRITE
memory or output
function
Status output signal
indicates that the
address bus holds
the pushdown stack
address from the
Stack Pointer