Re: EPROM Programmers AP64e MPC APEP and YKH128

["Mark Cummings" <NOTfigjams@primus.com.au>]

Wayne,

> No it just does not "do" anything but crash. Just peeked iospace , slot no
> program comes up. same with a pr#.

the normal way to start it is to boot into ProDOS or just the Applesoft
Prompt, and get back to 40-column mode, then type PR#n (n=slot of the card).
this boots the card and comes up with your first menu where you choose what
size EPROM you are working on. there is more involved but if you get this
far you are nearly there and it probably works.

> As for the Eprom, mine is a 16k chip - so may not be for this card at all!

my bad, the EPROM is actually a 2716 or 2K in size. must have been on
another planet before. your EPROM should be the same, it is not likely to be
16K (27128) if it's for the Apple ][, besides which it would have too many
pins, ie 28 instead of 24.

> Caution duly noted on switches.
> Sorry didn't see your post about D2, but it is a small signal diode-
boldly
> marked 22 (nothing else I can see -wiggled back and forth). As for the
other
> two cards the APEP is probably an earlier relative of the AP64e.

hmm 22 might mean 22V Zener ???, I'm still lost.

anyway I did manage to get the image of the EPROM after about an hour of
investigation and about 10 attempts at burning a temporary image so I could
read the original EPROM completely. it appears that the mapping of the
addresses means that it is not as linear as I thought, and now I will have
to re-visit the disassembly we are working on.
I still have something wrong because now it looks to be 4K in size. I'll
check again tomorrow, but if you use only the first 2K it should be right.

anyway for now it's here as a 4K file:
http://home.iprimus.com.au/figjams/apple2/AP64EPROM.BIN

> > anyway the Manual:
> > http://home.iprimus.com.au/figjams/apple2/AP-64e.PDF
> > Wayne Stewart also has another version of this book on his "organised"
site.
> > the Circuit:
> > http://home.iprimus.com.au/figjams/apple2/AP64Ecct.PDF

hope you can get it going, and I'll try to fix up the file back to 2K by
tomorrow.
if you need it in another format let me know. I could for example put in on
a shrink-it disk or file if that's easier.

Mark