Philips CD-I - Page 90

- Drive command register
D7
D6
D5
D4
D3
D2
Dl
DO
Address
Access
Bit assignment
Active
INTEN
H
2HD/2DD-
H
DDEN-
L
MOTORON H
!NUSE
H
SIDESEL H
DSl H
DSO H
Disk
select
330009
byte write
Note
Interrupt enable
High density select
Double density enable
Motor on
In use
Side select
Disk select 1
Disk select 0
2HD/2DD-
0
0
1
1
DDEN-
0
1
0
1
1..Ylli!
2DD MFM
2DD FM
2HD MFM
2HD FM
- Interrupt
The interrupt level and the vector number have to
be loaded into the SYSCONT register before the
interrupt is generated.
Two floppy disk drives are built into the Expansion
module as standard.
Floppy disk/disk drive specification:
- Disk
Disk size
Surface
Disk quality needed
- Recording capacity
Unformatted
- Data transfer rate
- Density
Recording density
Track density
- Number of tracks
7-10
3.5 inch
Double sided
2DD 2HD
1 2 Mb
250 500 Kbits/sec.
8717 17434 bpi
135 tpi
160
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