OT: KS0108 Graphics LCD control question

[Archilochus]

Hi all,
Just a quick question regarding the control of a graphics LCD display using dual KS0108 controllers.

Is it acceptable to enable both halves of the display and send data / instructions to both controllers at the same time, or should each side be written to separately?

In writing instructions or graphics such as simple lines, etc - it would take less code to write both sides at the same time - but i don't want to kill the controllers. The data sheets were fairly sparse as far as useful information goes :-(

Thanks,
Arch

[NavMicroSystems]

I don't know the details of the Display you are using, but:

as long as you enable both the controllers only when writing to the controller there shouldn't be a problem.
(I have done this a number of times on dual controller character displays)

But never try to read from both the controllers at the same time if they are sharing the "Data-Bus"!

regards

Ralph

[Archilochus]

Thanks Ralph!
Great point about reading back data - I had not even thought of that.

Thanks again,
Arch