Cirkit Distribution was british company located in Broxbourne. The company (re-)distributed several CPC peripherals. At least some of those peripherals seem to have been originally developed by HoneySoft. Cirkit hardware seems to be quite rare; at least there's little information about it in the internet.
- Cirkit Prestel Link Amstrad Interface ("It looks like a cartridge (8x5cm) for an Amstrad with a passthrough edge connector and a lead (70cm) comming out with a 5-pin DIN plug (male) at the end.")
- Cirkit twin-port serial interface (resold by Microstyle)
- Cirkit serial interface (this is the serial interface that was bundled with the Prestel Link modem)
- Cirkit HX-RX1 Rom Expansion Card (this might be the same piece of hardware as the Honeysoft ROM Board, which was distributed via the Cirkit telephone number)
Not sure if above list is complete, or if some items are duplicated.
According to this webpage, , the Cirkit serial interface uses the same Port addresses as the Amstrad / Pace interfaces (most information on that webpage, especially the clock frequencies, baudrate, and chipset, seems to be incorrect, so not too sure if the part about Cirkit I/O ports is correct).