HP Vectra Technical Reference Manual page 224

SECTION 7
TABLE OF CONTENTS
7. SERIAL AND PARALLEL I/O
217
7.1 Overview
217
7.1.1 Serial And Parallel Port Addresses
217
7.1.2 Print Screen Driver
218
7.1.3 Polled and Interrupt Driven Operations
219
7.2 Data Structures
219
7.2.1 Serial Port Driver Data Structures
219
7.2.2 Parallel Port Driver Data Structures
220
7.2.3 Print Screen Driver Data Structures
221
7.3 Serial Port Driver (INT 14H)
221
Serial Port Driver Function Definitions
222
F14_INIT (AH
=
OOH)
222
F14-XMIT (AH
=
01 H)
225
F14_RECV (AH
=
02H)
226
F14_STATUS (AH
=
03H)
226
F14_INQUIRE (AX
=
6FOOH)
226
F14_EXINIT (AX
=
6F01H) 227
F14_PUT_BUFFER (AX
=
6F02H)
228
F14_GET_BUFFER (AX
=
6F03H) 229
F14_TRM_BUFFER (AX
=
6F04H) 230
7.4 Parallel Port Driver (INT 17H)
232
Parallel Port Driver Function Definitions
232
F17_PUT_CHAR (AH
=
OOH) 232
F17_INIT (AH
=
01H) 233
F17_STATUS (AH
=
02H) 234
F17_INQUIRE (AX
=
6FOOH)
234
F17_PUT_BUFFER (AX
=
6F02H)
235
7.5 Print Screen Driver (INT OSH)
236
215