[[Image:KDSKds serial interface.jpg|right|thumb|250px|A RS232 interface by [[KDS Electronics]]Serial Interface]]
A [[RS232]] interface by [[KDS Electronics]].
Caution: KDS has wired the 6850 chip's data bus incorrectly: D7 is D0, D6 is D1, etc. (so the bit order must be reversed by software). And, reportedly, the hardware handshaking doesn't work properly (no idea if that's a hardware or software glitch, or maybe the 6850's 1-stage RXFIFO is just too small for high baudrates?).
* [[Media6850 ACIA chip]]* [[8253 chip]] == Pictures == <gallery caption="KDS Serial Interface">Image:MC6850KDS_RS232_Top.pdfjpg|Motorola MC6850 datasheet]]Interface TopImage:KDS_RS232_Bottom.jpg|Interface BottomImage:KDS_RS232_PCB_Top.jpg|PCB TopImage:KDS_RS232_PCB_Bottom.jpg|PCB Bottom</gallery>
== Manual ==
* [http://www.cpcwiki.eu/manuals/Serial%20Interface%20KDS%20Manual.en.rar Serial Interface KDS Manual]
== Downloads == * [[CategoryMedia:HardwareKDS_RS232_4.2.zip|K.D.S SERIAL INTERFACE & COMMS PACK 5 v4.2]] (ROM Image)* [[Media:Kds serial interface rom.zip|K.D.S SERIAL INTERFACE & COMMS PACK 5 v4.2B]] (ROM Image)* [[Media:KDSCOM50.ZIP|K.D.S SERIAL INTERFACE & COMMS PACK 5 v5.0]] (ROM Image)* [[Media:CAGE121.ZIP|Cage Comms v1.21 for the K.D.S. Serial Interface]] (ROM Image) [[Category:Peripherals]] [[Category:Serial interfaces]] [[Category:Manual]]