The Sinclair QL Forum

I have dual Goteks running FlashFloppy connected to a Tetroid card (also works with a Trump card). Note that a standard PC floppy cable was used which has a twist for the second Gotek. No modifications of the cable were needed. Tetroid_FLP1_FLP2.jpg The Gotek nearest the QL is FLP2. Jumper is locate...

Actually, Sinclair's solution was a good idea of having a DTE and a DCE configured serial port because it avoids having an external NULL modem gender changer because the conversion is builtin to the QL. In the 1980s and early 1990s, if you were not using a 25 pin D type then your solution was propri...

Part of the confusion is due to the "RS-232" specifications changing over the last 60 odd years. See https://en.wikipedia.org/wiki/RS-232 Note that there are also equivalent European specifications known as ITU-T V.24 and V.28. These specifications can be easier to understand than the Amer...

I have been using Sinclair computers since the ZX81 came out. Then came the 48K Spectrum which allowed me to learn the Z80 Assembly Language with Zodney Zaks' "Programming the Z80" reference book. During the 1980's, I also had a Commodore 64 with 1541 disk drive and an Atari STFM 1024. Aro...