IBM 5170 Technical Reference page 289

TiTlE 11/22/83 B I OS1
, LIST
I NCLUDE SEGMENT. SRC
0000
CODE SEGMENT BYTE PUBLIC
EXTRN DDS: NEAR
EXTRN PRT HEX:NEAR
EXTRN 01: NEAR
EXTRN 02: NEAR
EXTRN P MSG:NEAR
EXTRN D2A: NEAR
EXTRN PRT SEG: NEAR
EXTRN PROG_SHUTDOWN: NEAR
PUBL I C SHUT9
PUBliC CATE A20
PUBL I C CASSETTE_I 0_1
I NT 15 ~~--~~~~-------~--~~--------------------------------
INPUT - CASSETTE I/O FUNCTIONS
(AH) 00
(AH)
=
01
(AH) = 02
(AH)
=
03
RETURNS FOR THESE FUNCTIONS ALWAYS (AH) :: 86H, Cf = 1)
I F CASSETTE PORT NOT PRESENT
INPUT - UNUSED FUNCTIONS
(AH)
=-
04 THROUGH
7F
RETURNS fOR THESE fUNCT IONS ALWAYS (AH) :: 86H, CF :: ')
Extensions
(AH) :: 80H DEVICE OPEN
(BX) :: DEVICE 10
(CX)
=
PROCESS 10
(AHl
=
81H DEVICE CLOSE
(BX) = DEVICE 10
(CX) :: PROCESS 10
(AH)
=
82H PROGRAM TERMINATION
(BX) :: DEVICE 10
(AH) = 83H EVENT WAI T
(AL)
= 0
SET INTERVAL
(ES:BX) POINTER TO A BYTE IN CALLERS MEMORY
THAT WILL HAVE THE HIGH ORDER BIT SET
AS SOON AS POSS I BLE AFTER THE INTERVAL
EXP I RES.
(CX,DX) NUMBER Of MICROSECONDS TO ELAPSE BEfORE
POST I NG.
(ALl
=
1 CANCEL
(AH)
=
84H JOYSTICK SUPPORT
(OX) :: 0 - READ THE CURRENT SW ITCH SETT I NGS
RETURNS AL :: SWITCH SETTINGS (BITS 7-4)
(OX)
= , -
READ THE RESISTIVE INPUTS
RETURNS AX
=
A(x) VALUE
BX
=
A(y) VALUE
CX = Blx) VALUE
OX :: B(y) VALUE
(AH) = 85H SYSTEM REQUEST KEY PRESSED
(AL)
=
00 MAKE Of KEY
(AL)
=
01 BREAK Of KEY
(AH)
=
86H WAIT
(CX,OX) NUMBER OF MICROSECONDS TO ELAPSE BEFORE
RETURN TO CALLER
(AH)
=
87H MOVE BLOCK
(CX) NUMBER OF WORDS TO MOVE
(ES:SI l
POINTER TO DESCRI PTOR TABLE
(AHl :: 88H
EXTENDED MEMORY SIZE DETERMINE
(AH)
=
89H PROCESSOR TO VIRTUAL MODE
(AH)
=
90H DEVICE BUSY LOOP
(AL) SEE TypE CODE
(AH) :: 91H I NTERRUPT COMPLETE FLAG SET
(AL) TYPE CODE
OOH -> 7FH
SERIALLY REUSABELE DEVICES;
OPERATING SYSTEM MUST SERIALIZE
ACCESS
80H -> BFH
REENTRANT DEVICES; ES:BX IS
USED TO DISTINGUISH 01 FFERENT
CALLS (MULTI PLE I/O CALLS ARE
ALLOWED SIMULTANEUSLY)
COH
->
ffH
WAIT ONLY CALLS; THERE IS NO
COMPLEMENTARY' POST' FOR THESE
WA I T5 - - THESE ARE TIMEOUT
ONLY, TIMES ARE FUNCTION NUMBER
DEPENDENT
TYPE DESCRIPTION TIMEOUT
OOH '" DISK YES
01H
=
DISKETTE YES
02H
=
KEYBOARD NO
80H
=
NETWORK NO
ES: BX
-->
NCB
FDH
=
DISKETTE MOTOR START YES
FEH
=
PR I NTER YES
ASSUME CS; CODE
0000 CASSETTE_1O_' PROC FAR
0000 FB
STI
0001 80 FC 80 CMP AH,80H
CHECK FOR RANGE
0004
72 46
JB Cl
RETURN IF 00-7FH
r"'\
0006 80 EC 80 SUB AH,80H
BASE ON 0
0009 OA E4 OR AH,AH
OOOB 74 45
JZ
DEV_OPEN
oEVI CE OPEN
0000
FE CC OEC
AH
OOOF 74 41
JZ
DEV_CLOSE DEV I CE CLOSE
0011
FE CC
DEC AH
0013 74 3D
JZ
PROG_TERM PROGRAM TERM I NAT I ON
0015
FE CC
DEC AH
0017 74 3B JZ
EVENT_WAIT EVEMT WAIT
0019
FE CC
DEC
AH
001B 74 78 JZ
JOY_STICK
JOYSTICK BIOS
0010
FE CC
DEC AH
OOlf
74 31
JZ
SYS_REQ
SYSTEM REQUEST KEY
0021 FE CC DEC AH
0023 74 07
JZ
Cl_A WAIT
0025 FE CC
DEC AH
BIOS 1 5-147