Digital Equipment Pro-Face PL-6700 43 Series, Руководство пользователя

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Appendix
PL-6700 43 Series User’s Manual App-11
Operation Input Output
Font registration
8 x 8 dot font
registration (PC
character set,
inside video BIOS
ROM) [Graphics]
AH =
AL =
BL =
DL =
11h
23h
0: (Number of lines per DL register value)
1: 14 lines
2: 25 lines
3: 43 lines
Number of screen lines (When BL = 00h)
8 x 16 dot font
registration (PC
character set,
inside video BIOS
ROM) [Graphics]
AH =
AL =
BL =
DL =
11h
24h
0: (Number of lines per DL register value)
1: 14 lines
2: 25 lines
3: 43 lines
Number of screen lines (When BL = 00h)
Reading font table
data
AH =
AL =
BL =
11h
30h
0: Return INT 1Fh (CGA font) entry address
0: with ES:BP register.
1: Return INT 43h entry address with ES:BP
1: register.
2: Return 8 x 14 font address with ES:BP
2: register.
3: Return 8 x 8 font address with ES:BP
3: register.
4: Return 8 x 8 font (80h) address with
4: ES:BP register.
5: Reserved
CX =
DL =
ES:BP =
Number of vertical bits per character
Number of lines per screen - 1
Address of data specified in BH
Performance selection
Reading video
mode data
(Color/B/W mode)
AH =
BL =
12h
10h
BH =
BL =
CH =
CL =
0: Color mode
1: B/W mode (MDA mode)
Video RAM memory size
Reserved
DIP switch setting
Selecting video
BIOS print-screen AH =
BL =
12h
20h
Selecting vertical
resolution
AH =
BL =
AL =
=
=
=
12h
30h
Selected vertical resolution
00h: 200 display lines
01h: 350 display lines
02h: 400 display lines
AL = 12h Successfully executed
Default pallet load
enable/disable
AH =
BL =
AL =
12h
31h
Load selection
0: Default pallet loading enabled
1: Default pallet loading disabled
AL = 12h Successfully executed
Video
enable/disable
AH =
BL =
AL =
12h
32h
0: Video enabled
1: Video disabled
AL = 12h Successfully executed
Gray scale
enable/disable
AH =
BL =
AL =
12h
33h
0: Gray scale enabled
1: Gray scale disabled
AL = 12h Successfully executed
4 BIOS Lists