Download USER'S MANUAL

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11.
Interrogate A v a i l a b l e D i s k s
12.
Interrogate Selected Disk
13.
Set DMA Address
14.
S e t / R e s e t F i l e Xndlcators
Device Allocation
The following 4 logical devices are allocated in
t h e CP/M-80.
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CON : The System Console Device
RDR : The Paper Tape Reader Device
CP/M-80 functions and their numbers are listed below.
PUN : The Paper Tape Puncher Device
LST : The
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1
2
3
4
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6
7
8
9
10
11
12
13
14
15
16
17
1 8
System Reset
Console Input
Console Output
Reader Input
Punch Output
List output
D i r e c t C o n s o l e I/O
Get I/O Byte
Set I/O Byte
Print String
Read Console Buffer
Get Console Status
Return Version Number
Reset Disk System
Select Disk
Open File
Close File
Search for First
Search for Next
19 Delete File
20 Read Sequential
21 Write Sequential
22 Make File
23 Rename File
24 Return Login Vector
25 Return Current Disk
26 Set DMA Address
27 Get Addr(Alloc)
28 W r i t e P r o t e c t D i s k
29 Get R/O Vector
30 Set File Attributes
31 Get Addr(Disk Parms)
32 Set/Get User Code
33 Read Random
34 Write Random
35 Compute File Size
36 Set Random Record
37 Reset Drive
40 Write Random with Zero Fill
Functions 28 and 32 should be avoided in application
programs to maintain upward compatibility with CP/M-80.
Note :
For detail explanation you must refer to the topic
‘CP/M 2 System Interface’ of the 'CP/M-80 OPERATING
SYSTEM MANUAL’.
.Output List Device
The physical devices
a8 follows.
allocated for the Formula-l are
CON : TTY, CRT
RDR : TTY
PUN : TTY
LST : TTY, CRT, ULl, LPT
ULl = System’s Thermal Printer
LPT - Centronics Standard Interface Printer
(Parallel I/O Ports)
When the power is turned 'ON', t h e f o l l o w i n g i s a l l o c a t e d .
CON : CRT
RDR : TTY
PUN : TTY
LST : ULl
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