IBM Personal System/2 50 Technical Reference page 19

Section 2. Programmable Option Select
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
P~S
Address Map .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Card Selected Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
System Board Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
System Board Enable/Setup Register (Hex 0094) ......... 2-7
System Board
P~S
Register 2 (Hex 0102) . . . . . . . . . . . . . . 2-8
System Board
P~S
Register 3 (Hex 0103) . . . . . . . . . . . . . . 2-9
Adapter Enable/Setup Register (Hex 0096) ............ 2-10
Model 50 POS 2-1