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Description
The
IBM Personal System/2 Hardware Interface Technical Reference
describes devices common to the PS/2* AT-bus system family.
The IBM ThinkPad 560/560E computer (hereafter called the 560,
ThinkPad computer
, or
computer
) is a notebook-size computer that
features the AT* bus architecture. Each computer supports one
external diskette drive and one internal hard disk drive.
Programs can distinguish the foregoing models of computers from
other ThinkPad models by reading the system ID: Interrupt 15H,
function code (AH)=23H, (AL)=10H, returns (AL)=0EH for the
560/560E.
The system microprocessor contains an internal cache and cache
controller.
Figure 1-1 lists the model bytes, submodel bytes, and system clock
speed of the system board.
Figure 1-1. Model and Submodel Bytes
Model Model Byte
(Hex)
Submodel Byte
(Hex)
System Clock
560/560E FC 01 66 MHz / 60 MHz
For a listing of the other systems, refer to the
IBM Personal
System/2 and Personal Computer BIOS Interface
.
1-2 ThinkPad 560/560E System Overview