Changes
/* The CSD System Cartridge */
Lots of information is not known at this time.
It uses ports fbe0-fbe3. The exact decoding and operation of these ports is unknown.
fbe0 This port is read only it seems. bits 7..4 seem to be related to the dip switches on the CSD with bit 7 seems to be fixed to GND/0v.
bit 6,5 is the timer value. It is the time allowed between choosing next cartridge to play.
bit 6, bit 5
off off = 8s 1 1
off on = 16s 1 0
on off = 24s 0 1
on on = 32s 0 0
bit 4 seems to be timer on/off for time limited play.
bits 3..0 are defined by the dial
bit 3 is ignored.
0 = forever?
1 = 8s,
2 = 56s
fbe2 is read only it seems
bits 7..3 are the currently selected cartridge
bits 3..0 ???
fbe1 is writeable
bits 7,6: ???
bits 5..0: are cartridge number??
fbe3 is writeable:
bits 7..4: are cartridge number
bits 3..0: ???
The system cartridge uses the following plus features:
* sprites
* palette
* raster interrupts
== Pictures ==
Image:csddaughter.jpg
</gallery>
== Download ==
* [[Media:CSD Jukebox.cpr]] (JukeBox Cartridge .CPR file)
Courtesy of Amstrad.cpc.free.fr
[[Category:Hardware]][[Category:CPC Plus]][[Category:Amstrad Products]][[Category:Cartridges]][[Category:Expansion ROM]]