Tandy 1000 Programmer's Reference Guide

Chapter 1 I System Calls
MS-DOS Function Calls in Alphabetic Order
Function Name
Allocate Memory
Auxiliary Input
Auxiliary Output
Buffered Keyboard Input
Change Attributes
Change the Current Directory
Check Keyboard Status
Close
a File Handle
Close File
CONTROL-C Check
Create
a File
Create File
Create Subdirectory
Current Disk
Delete a Directory Entry
Delete File
Direct Console Input
Direct Console
IiO
Display Character
Display String
Duplicate
a File Handle
File Size
Find Matching File
Flush Buffer, Read Keyboard
Force
a Duplicate cf a File Handle
Free Allocated Memory
Get Date
Get Disk Free Space
Get Disk Transfer Address
Get Version Number
Get Interrupt Vector
Get Time
Get
or Set a File’s Date or Time
IiO Control for Devices
Keep Process
Load and Execute
a Program
Modify Allocated Memory Blocks
Move
a Directory Entry
Move
a File Pointer
Number
48H
03H
04H
QAH
43H
3BH
0BH
3EH
10H
33H
3CH
16H
39H
19H
41H
13H
07H
Q6H
02H
09H
45H
23H
4EH
OCH
46H
49H
2AH
36H
2FH
3QH
35H
2CH
57H
44H
31H
4BH
4AH
56H
42H
30

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