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Tandy 1000 Programmer's Reference Guide

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Chapter
1
I
System
Calls
Wait
Retrieve the Function Call
4DH
Return Code
of
a
Child
Returns the Exit code specified by a child process. It returns
this Exit code only once. The low byte of this code is sent by the
Keep Process function call (31H). The high byte indicates the
circumstances that caused the child
to
terminate, and is one of
the following:
0-
Terminate/abort
2-
Hard error
3-
Terminate and stay resident
1-
CONTROL-C
Entry Conditions:
AH
=
4DH
Exit Conditions:
AH
=
exit
code
Error Returns:
None.
Example:
Wait
=qu
4DH
mov
ah,
Wait
int
21
H
130

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Tandy 1000 Specifications

General IconGeneral
ProcessorIntel 8088
Processor Speed4.77 MHz
RAM128 KB (expandable to 640 KB)
Operating SystemMS-DOS 2.11
ManufacturerTandy Corporation
Release Year1984
StorageSingle or double 5.25" floppy disk drive (360 KB), optional hard drive
SoundTandy 3-voice sound
PortsParallel, Serial
GraphicsCGA (Color Graphics Adapter)
Graphics Modes320x200, 640x200

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