Sinclair ZX80 / ZX81 Forums

[sirmorris]

I have just transferred 10 bytes to zeddy memory via DMA

It's not reliable though

I don't think that it will ever be a workable solution to loading software on the zeddy. For every 1 successful, clean, transfer there are at least 20 power-cycle resets required.

I'm going back to the simple idea of RAM, EPROM & IO ports. 6 seconds to load 3D monster maze is fast enough, right?

-Charlie

[siggi]

Yes, that is fast enough for most zeddy users, who are used to load programs while having a coffee break.
I also use such a parallel port mmc interface in my ZX81 laptop, due to its minimal hardware requirements.
But my web-server still runs with the prototype of my fast mmc interface (using a hardware shift register) I made in 2007 and loads 16K programs in less than a second.

Siggi