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Section B:
8.8. Table of Hardware Driver Calls
No
Function
0 System Initialization
1 System He-Initialization
2 Check Cancels State
3
Console Input
4 Console Output
5 Printer Output
6 Auxiliary Device Output
7 Auxiliary Device Input
8 Move Disk Head to Track 0
9 Select Drive
1~
Set Track
11 Set Sector
12 Set DMA Address
13
Read Disk Block
14 write Disk Block
15 Check Printer State
16 Sector Translation
17 Check Console Output State
18
Check Aux. Dev. Input State
19 Check Aux. Dev. Output State
2~
Return Device Table Address
21 Initialize Device
22 Check Drive Ready
23 Activate Screen Editor
24 Flush Sector Buffers
25 Move Memory Block
26 Get/Set Calendar/Clock
27 Invoke Graphics
28 Hex. Output
Hardware interface
Parameters
c
character
C
character
C
character
C
=
drv,
E
BC
track
BC
sector
BC
address
bit
C = write code
BC = sector
C
device number
C
=
drive
C
=
col, DE = addr
Data returned
AL
=
0
I
character
AL = character
AL = character
HL
=
0
I
not
0
AL
AL
AL
HL
AL
AL
AL
B
I
l
B
I
l
I
2
B
I
BFFH
sector
0
I
0FFH
~
I
character
0
I
0FFH
HL
address
HL = check result
AL
=
0
I
l
I
2
registers preset
registers changed
C = flag, DE = addr-
BC
parameters
BC =word f. output
EOS System manual
Daeumling & Zimmermann
Page 135
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