Contents
Section 1. Power-On Self-Test
(POST)
...............
1-1
Power-On Self-Test Sequence
..................
1-2
Modem Presence Test
........................
1-9
Printer/Communications Presence Test
.........
1-12
Section 2.
ROM
BIOS
Listing
......................
2-1
ROMMap
.................................
2-4
Common
Equates
and
Data
Areas
...............
2-7
Nonmaskable Interrupt Handler (BlONMIH)
....
2-26
Keyboard Services
(BIIKYBD)
...............
2-65
Video
I/O
and
Print
Screen (BI2VIDEO)
........
2-77
Diskette Support
(B
13DSKT)
................
2-119
Communications
and
Printer BIOS
(B14COMMO)
...........................
2-143
Time
of
Day (B15TOD)
.....................
2-153
System Services
(B
16SYSV) . . . . . . . . . . . . . . . . . . 2-168
General Subroutines
and
Tables
(B
17T ABLE)
...
2-191
Release Date Marker
.......................
2-241
System Model Byte
.........................
2-241
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