NEC CP/M-86 User Manual

iv
Contents (cont' d)
Page
Chapter 4 Basic Disk
Operating System (BDOS) Functions
BDOS PARAMETERS............................................. 4-1
BDOS FUNCTION CODES ........ : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4-2
Simple BDOS Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4-4
BDOS File Operations ......................................... 4-10
BDOS Memory Management and Program Functions. . . . . . . . . . . . . .. 4-32
Chapter 5 Basic 1/0 System (BIOS) Organization
ORGANIZATION OF THE BIOS................................... 5-2
THE BIOS JUMP VECTOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-3
BIOS SUBROUTINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-3
STANDARD BIOS SUBROUTINE ENTRY POINTS.................. 5-5
System Initialization Subroutines ................................ 5-5
Simple Character 1/0 Subroutines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-6
10BYTE Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-8
Disk 1/0 Subroutines .......................................... 5-10
Other
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-18
Chapter 6 Advanced BIOS Functions
CRT ESCAPE SEQUENCE FUNCTIONS............................ 6-1
Format and Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-1
APC Escape Code Sequences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-4
ASCII
CONTROL CODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-9
EXTENDED FUNCTION CALLS .................................. 6-9
Get Time
and Date ............................................ 6-10
Set Time and Date. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-11
Play Music .................................................... 6-11
Sound Beep. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-15
Report Cursor Position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-17
Auto Power Off ............................................... 6-17
Initialize Keyboard
FIFO Buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-18
Direct CRT 1/0 ............................................... 6-18
Write
CMOS .................................................. 6-26
Read
CMOS .................................................. 6-26
Initialize
RS 232C ............................................. 6-27

NEC CP/M-86 Specifications

General

Brand	NEC
Model	CP/M-86
Category	Desktop
Language	English