Intermec 6200 Reference Guide

APPENDIX B

Common PEN*KEY 6000 Series Information

PEN*KEY

6200/6300 Hand-Held Computer Programmer’s Reference Guide B-21

Background

When any typical PC is first turned on, it performs a cold boot. Many pieces of

software are loaded into the PC's executable memory, or RAM, during the coldĆ

boot process. The first thing that loads is the BIOS. On a notebook or desktop

PC, the BIOS is usually stored in a ROM chip on the main CPU board (motherĆ

board). After the BIOS is loaded, DOS is loaded into the random access memory

(RAM). In a machine that is set up to run in a Windows environment, the next

item loaded is Windows. Finally, the user selects an application to run, which

the system loads into the RAM.

Standard PC Memory Overview

While installing programs, if you load some of them into the Upper Memory Area

(UMA), this helps free up some conventional memory for use by your application.

The following overview should provide some insight into how memory is orgaĆ

nized and what each part is for.
To better understand the usage of these memory areas, refer to the diagram beĆ

low, while reading the information that follows.

ÎÎÎÎÎÎÎÎÎÎÎ

ÂÂÂÂÂÂÂÂÂÂÂ

ÇÇÇÇÇÇÇÇÇÇÇ

Conventional memory

640 KB

Upper Memory Area

(UMA) 384 KB

High Memory Area (HMA)

64 KB

Extended memory

1 MB

Figure BĆ1

Typical Memory Organization

B. Common PEN*KEY

6000 Series Info.