QPLANE - SINCLAIR QL Backplane port expansion.

(C) 2023 Alvaro Alea Fernandez

License under: CERN Open Hardware Licence Version 2 - Strongly Reciprocal

https://ohwr.org/cern_ohl_s_v2.txt

This board has been reverse engineered from pictures freely available on internet.

THIS BOARD HAS NOT BEEN TESTED!! Use at your own risk.

Information

This backplane is intended for install the QL main board in a PC AT case.

• Provide 3 expansion slot, this slot has the oposite direction of insert.
• Get energy from tipical AT power supply, for that is need to remove the regulator in the QL
• This cause that microdrive do not work,
• This also cause that board of expansion need to be modified to adapt to the new voltages.