DIGITAL-LOGIC AG
PCCP5 Manual V2.3
58
BIOS Data Area Definitions
Continued...
Location
Description
15h - 16h
Reserved
17h
Keyboard Shift Qualifier States
bit 7
= Insert mode
bit 6
= CAPS lock
bit 5
= Numlock
bit 4
= Scroll Lock
bit 3
= Either Alt key
bit 2
= Either control key
bit 1
= Left Shift key
bit 0
= Right shift key
0
= not set / 1 = set
18h
Keyboard Toggle Key States
bit 7
= (1) Insert held down
bit 6
= (1) CAPS lock held down
bit 5
= (1) Num Lock held down
bit 4
= (1) Scroll Lock held down
bit 3
= (1) Num Lock held down
bit 2
= (1) Sys Re held down
bit 1
= (1) Left Alt held down
bit 0
= (1) Left Control held down
19h
Scratch area for input from Alt key and numeric keypad
1Ah - 1Bh
Pointer to next character in keyboard buffer
1Ch - 1Dh
Pointer to last character in keyboard buffer
1Eh - 3Dh
Keyboard Buffer. Consists of 16 word entries.
3Eh
Diskette Drive Recalibration Flag
bit 7
= (1) Diskette hardware interrupt occurred
bits 6-4 = Not used
bits 3-2 = Reserved
bit 1
= (0) Recalibrate drive B
bit 0
= (0) Recalibrate drive A
Continued...
Содержание MICROSPACE PCC-P5
Страница 107: ...DIGITAL LOGIC AG PCCP5 Manual V2 3 107 5 2 3 PCC P5 V2 3...
Страница 108: ...DIGITAL LOGIC AG PCCP5 Manual V2 3 108...