The Sinclair QL Forum

The problem is rather - You need to be able to send and receive on the same pin in order to enter the network - That's the tricky bit that's needed for colission detection. Also, I would rather not go for the parallel port - That's a dying breed....

Tobias

Parallel port is handy for hacking ...

adventurous plans. If I went this road, I'd prefer to leave out x-windows, and have the emulator run in a full screen graphics mode. I'm not sure how hard this would be on the Pi (probably can't just fire of int10 like you could on old x86 PCs).


The PI has a GPU which roughly speaking talks ...

tofro wrote:There's not much to document - It's plain TTL, 0V/5V.

That's promising, so old PC parallel port pin and a diode providing the PC end doesn't want to do any listening, or with an input pin to the same line if it does.

Are the correct voltages and currents and hardware signals documented anywhere for this. I've found the documentation for the protocol at the higher level but nothing on the voltages and raw encoding/clocking.

It looks an ideal way to get stuff to and from a QL without doctoring the QL, or fitting ...

I know one of the people involved with this company. It has a good number of former Motorola/Freescale employees.

Do they have any plans to do small hobbyist order sizes or to have any kind of suppliers who would - I came across them earlier for HC11 as well but their parts seem unorderable by ...