Intel 386 - Manual (Page 413)

Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL
13-14
Figure 13-13. Interrupt Service Routine for Receiving Data Using Interrupts
A3397-01
ROE=0
?
Error
Routine
Disable Interrupts While
Receiving Data
Read Data From Buffer
(SSIORBUF)
No
Enable Interrupts
Yes
Exit Interrupt Service Routine
SSIO Receiver
Causes Interrupt