27 Jul
2006
27 Jul
'06
5:19 a.m.
Tony Duell schrieb:
I was going to suggest something like that. In fact one day I must get
round to designing such and interface.
This has been already done, and is available on the Net. Look at the
schematics for the Apple I replica at www.applefritter.com;
this contains an ATMEL controller to convert a PC keyboard to the
7bit+strobe required for the Apple I. It is probably just a matter
of changing the translation table in the code to adapt to any encoding.
An ATMEGA8515 is maybe overkill for such a converter, as
it has 2 unused 8 bit ports , but it is a little bit less powerconsuming
as a PC with a parallel port.
--
Holger Veit
Looking for thoughts on which machines used parallel
ASCII keyboards...
It would be dead simple to make an adapter to convert a standard PC serial
keyboard
into an ASCII/strobe parallel interface - you get the added benefits of having lots of
extra keys, and the ability to assign whatever codes you like to them.