Tandy 1000 Programmer's Reference Guide

ChaDter 1 I Svstem Calls
Open a File
Open File
Parse File Name
Print Character
Random Block Read
Random Block Write
Random Read
Random Write
Read From a File
or Device
Read Keyboard
Read Keyboard and Echo
Remove a Directory Entry
Rename File
Reset Disk
Retrieve the Return Code
of a Child
Return Current Setting of Verify
Return Country-Dependent Information
Return Text
of Current Directory
Search for First Entry
Search for Next Entry
Select Disk
Sequential Read
Sequential Write
Set Date
Set Disk Transfer Address
Set Relative Record
Set Time
Set Interrupt Vector
SetiReset Verify Flag
Find Next Matching File
Terminate
a Process
Terminate Program
Write
to a File or Device
3DH
OFH
29H
05H
27H
28H
21H
22H
3FH
08H
OIH
3AH
17H
0DH
4DH
54H
38H
47H
11H
12H
OEH
14H
15H
2BH
1AH
24H
2DH
25H
2EH
4FH
4CH
OOH
40H
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Tandy 1000 Specifications

General

Processor	Intel 8088
Processor Speed	4.77 MHz
RAM	128 KB (expandable to 640 KB)
Operating System	MS-DOS 2.11
Manufacturer	Tandy Corporation
Release Year	1984
Storage	Single or double 5.25" floppy disk drive (360 KB), optional hard drive
Sound	Tandy 3-voice sound
Ports	Parallel, Serial
Graphics	CGA (Color Graphics Adapter)
Graphics Modes	320x200, 640x200