IBM Personal System/2 50 User Manual

Figures
1-1.
Model
and
Submodel
Bytes
.............--.-..,
1-3
1-2.
System
Board
Devices
and
Features
.............
1-4
1-3.
System
Board
...........-.
2.0222
1-5
1-4.
System
Board
I/O
Address
Map
............-....
1-6
1-5.
Performance
Specifications
—
Type
1
System
Board
1-7
1-6.
Performance
Specifications
—
Type
2
System
Board
..
1-8
1-7.
Physical
Specifications
...................-...
1-9
1-8.
Acoustical
Readings
.................-..--.
1-10
1-9.
Component
Maximum
Current
...........-.-...
1-11
1-10.
Channel
Load
Current
....................-..
1-11
2-1.
POS\W/OAddress
Map
..............-.0-20--,
2-5
2-2.
Card
Selected
Feedback
Register
(Hex
0091)
.......
2-6
2-3.
System
Board
Enable/Setup
Register
(Hex
0094)
.....
2-7
2-4.
System
Board
POS
Register
2
(Hex
0102)
..........
2-8
2-5.
Parallel
PortSelect
Bits
................-505.
2-8
2-6.
System
Board
POS
Register
(Hex
0103)
...........
2-9
2-7.
Adapter
Enable/Setup
Register
(Hex
0096)
........
2-10
3-1.
Arbitration
Bus
Priority
Assignments
.............
3-4
3-2.
Arbitration
Register,
Write
toHex0090
...........
3-5
3-3.
Arbitration
Register,
Read
Hex0090
.............
3-5
3-4.
System
Memory
Map
..............25+
0500
5-
3-8
3-5.
System
Board
Memory
Connector,
Type1
.........
3-9
3-6.
System
Board
Memory
Connector,
Type2
........
3-10
3-7.
Presence
Detect
Encoding
...................
3-11
3-8.
RT/CMOS
RAM
Address
Map
...............-..
3-12
3-9.
RT/CMOS
Address
Register
and
NMI
Mask
(Hex
0070)
3-13
3-10.
RT/CMOS
Data
Register
(Hex
0071)
.............
3-13
3-11.
Real-Time
Clock
Bytes
................-.-..
3-15
3-12.
Status
RegisterA
.............
2.0002
3-16
3-13.
StatusRegisterB
...............-.---20-5.
3-16
3-14.
Status
RegisterC
...............0-.--0008
|
3-18
3-15.
StatusRegisterD
.................----005.
3-18
3-16.
Diagnostic
Status
Byte
............---..--..
3-19
3-17.
Diskette
Drive
Type
Byte
................-..-.
3-20
3-18.
Diskette
Drive
Type
Byte
(Bits7-4)
............
3-21
3-19.
Diskette
Drive
Type
Byte
(Bits3-0)
............
3-21
3-20.
EquipmentByte
..................---000-.
3-22
3-21.
Equipment
Byte
(Bits7,6)
..........-.--.-4--
3-22
3-22.
Equipment
Byte
(Bits
5,4)
............-...-..
3-22
3-23.
System
Control
Port
B
(Write)
.........-..----.
3-24
3-24.
System
Control
Port
B
(Read)
............-..-.
3-25
3-25.
System
Control
Port
A
(Hex
0092)
..............
3-25
©
Copyright
IBM
Corp.
1989,
1990
Ix

IBM Personal System/2 50 Specifications

General

Brand	IBM
Model	Personal System/2 50
Category	Desktop
Language	English