Protech Systems BU-2509 User Manual page 128

I/O MAP
0x000000A8-0x000000A9 Programmable interrupt controller
0x000000AC-0x000000AD Programmable interrupt controller
0x000000B0-0x000000B1 Programmable interrupt controller
0x000000B4-0x000000B5 Programmable interrupt controller
0x000000B8-0x000000B9 Programmable interrupt controller
0x000000BC-0x000000BD Programmable interrupt controller
0x000004D0-0x000004D1 Programmable interrupt controller
0x00000040-0x00000043
0x00000050-0x00000053

BU-2509 USER S MANUAL
System timer
System timer
Appendix A Technical Summary
ASSIGNMENT
Page: A-12