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KDS 8-Bit Printer Port

418 bytes added, 8 April
/* About */
== About ==[[8bit Printer Ports|8bit printer port]] by [[KDS]]. Connects to the regular 34pin 7bit [[Connector:Printer port|Printer Port Connector]], and does somehow expand it to 8bit in a similar fashion . Contrary to other 8-bit printer port expansions, as long as the [[8bit Printer Port (Paul Bauriedl)|8bit Printer Port from Paul Bauriedl]] KDS v2 software driver is not loaded the CPC works in 7- bit mode as though the KDS v2 interface is not there. The exact I/O mechanism used by KDS, and differences (if any) between KDS and Paul's printer ports are is unknown.
== Versions ==
There are (possibly) two versions: One that does require a power supply input, and one that doesn't.(This Another difference is guessedthat the original version is not compatible with CP/M, using information fragements found in while the adverts and on photos - it's also possible that there was only one later version)is.
The original version was first advertised in April 1985, these adverts didn't mention whether or not it requires a power supply input (normally, its data latch should need a power supply).
A year later, in April 1986 newer adverts included a note that a power input isn't required, which may refer to a new version, and which may mis-use the signal levels as supply voltages - if so, it may require some programming cautions (such like not to switch all signals to LOW level for longer periods), accordingly it may be incompatible with software from the older version.
Below are two photos, one showing a power-supply cable, one not showing one. Both have 34pin connectors, so both are probably printer-port-related hardware (although the photo with power cable is claimed to show a [[KDS Electronics Serial Interface|KDS Serial Interface]] with 50pin connector, which is obviously nonsense).
<gallerycaption="KDS 8Bit Printer Port v1">Image:KDS.jpg|KDS Interface for the AmstradBoxImage:KDS8BitKDS_8Bit_PrinterPort_Top.jpg|The KDS 8bit printer portInterface TopImage:KDS_8Bit_PrinterPort_PCB_Top.jpg|PCB TopImage:KDS_8Bit_PrinterPort_PCB_Bottom.jpg|PCB Bottom
</gallery>
<gallerycaption="KDS 8Bit Printer Port v2">Image:NoPictureKDS_8Bit_Printer_Port_v2_PCB_Top.pngjpg|Inside of interfacePCB TopImage:KDS_8Bit_Printer_Port_v2_PCB_Bottom.jpg|PCB Bottom
</gallery>
</gallery>
== Manual ==* [[Media:KDS_8Bit_Printer_Port_v2_Manual.pdf|KDS 8 Bit Printer Port v2 Manual]] (pdf)*[[Media:KDS 8bit printer port review.jpeg]] [[Category:HardwarePrinters and printer ports]] [[Category:Peripherals]][[Category:Manual]]
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