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Servicing Personal Computers, 3rd Edition
book

Servicing Personal Computers, 3rd Edition

by Michael Tooley
May 2014
Intermediate to advanced content levelIntermediate to advanced
320 pages
13h 41m
English
Newnes
Content preview from Servicing Personal Computers, 3rd Edition
244 Servicing Personal Computers
IOB C
CLK C
S1 C
DT/R C
ALE C
ÂËN"
C
MRDC C
AMWCC
MWTC C
GND
1
2
3
4
5
6
7
8
9
10
^ 20
19
18
17
16
8288
15
14
13
12
11
'
V
CC
D SO
1 S2
D
MCE/PDTN
1 DEN
D CEN
3 INTA
D IORC
1 AIOWC
D IOWC
Figure 6.30. 8288 pin connections
Useful memory locations
A number of memory locations can be useful in determining the current state of a PC or
PC-compatible microcomputer. The contents of these memory locations (summarised in Table
6.7) can be displayed using the MS-DOS debugger (DEBUG) or using a short routine written in
Table 6.7 Useful PC memory locations
Address location Number of bytes Function
0410
0413
0417
043E
2 ...
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Publisher Resources

ISBN: 9781483193670