PC keyboard & Mouse
ZXNet echo conference «real.speccy»
21 Aug 02 00:35, Kirill Frolov -> Alex Udotoff:
AU>> Maybe someone will throw in the circuit of the subject controller or
KF> Not in free distribution.
Well, why not. The circuit from the ATM turbo can be used, there is a controller.
I was inspired to gut Zonov's sub controller, I'm sitting here drawing the circuit. I'm already tired, dammit...
KF> I exclude Lomov's scheme as overly complicated.
It's not that complicated. Z80, 8 KB ROM, 1 KB RAM and bulk. And the processor
it doesn’t seem to be dying.
By the way, probably the simplest one is the circuit for the XT keyboard from ZXNext. Of all the good stuff, there's only a 4Kb ROM and a little bit of junk. But it has a drawback - you can’t press more than one button at the same time (except for shift keys, of course). I have one like this as a spare, but I gave the diagram to one character to look at and there’s no time to pick it all up. It's been a year now. :(
By the way, it’s on the Internet somewhere. Could someone tell me the URL... S?
AU>> at least give me a hint on how to make this thing?
KF> On a microcontroller.
With a mouse it’s easier - there are several circuits on PICs. Looks like there were some on loose ones too.
WBR, Jason.
/*e-mail: jason2000(scary dog)yandex.ru ICQ: 62235830*/
/np:/ *silence*
VK> The mouse is simpler - there are several circuits on PICs. There were like
VK> in loose form too.
You can add a keyboard to them if you take a controller with a larger
memory.
And the old XT keyboard controllers are not relevant in any case - now
XT keyboards will not be found.
KF>> larger amount of memory. And the old XT keyboard controllers in
KF>> are not relevant in any case - now you won’t find an XT keyboard.
VK> Do you often look at AT keyboards from below? And there is often a switch
VK>: XT-AT. I have one just like this.
How old is she? A typical modern Chinese 'windoze-keyboard'
has no switches.
Once Saturday August 24, 2002 at 22:07:13, Valerij and Kirill were arguing about PC
keyboard & Mouse
VK> Do you often look at AT keyboards from below? And there is often a
VK> switch:
VK> XT-AT. I have just this one.
wow, let's go to the museum... to the museum, they don't make them like that anymore :)
[IronLord] Yurik aka Jerri / Alien Factory /I \
[No RAR allowed] [SoHm] [Conceptual Minimalism] \ZX/