27 Apr
2009
27 Apr
'09
3:05 a.m.
On 27/04/2009 00:39, falco at ihug.co.nz wrote:
There's a standard modification to add lower case to an Apple ][, which
consists of merely replacing the chargen (EP)ROM for the display, and
adding a wire for the keyboard. I guess Apple just decided to economise
so the keyboard didn't generate lower case, and hence there was no need
for lower case in the chargen either.
--
Pete Peter Turnbull
Network Manager
University of York
IIRC the Apple
][ text display was upper case only. The fact that your
clone does lower case means there must be hardware differences between it
and a real Apple. Which means, alas, the schematics for the latter aren't
going to be a lot of use.
I think I might be luckier than that. As far as I can tell, the character
ROM in the Apple ][ is ASCIIish, but for some reason the lower case ASCII
positions contained upper case characters.