eproms

[Dr.Acacio]

I think it is not possible to use eeprom over a eprom place ....only
FLASHPROM ......
to   use a greater eprom over a smaller size you have normally only to
duplicate the bin file
27c512 =  2x  27c256   that 's mean ( in the programer's buffer) copy from
$0000 until $7FFF  to $8000 until $FFFF-------------------- >>>>>>  this I
know it works.
27c512 = 4 x  27c128  ???  copy $0000 until $3FFF to $4000 until $7FFF and
copy again to $8000 until $BFFF and to $C000 until $FFFF
This I didnot test but i think it will works....????????
-----Mensagem Original-----
De: Akselrud, Boris <AkselruB at moodys.com>
Para: <gmecm at efi332.eng.ohio-state.edu>
Cc: <mrolica at meridian-mag.com>
Enviada em: Quarta-feira, 10 de Novembro de 1999 16:39
Assunto: RE: eproms


> 1. I don't think you can use 27c512 in ECM designed to rad 27c128, because
> address buss will only address 12K
> 2. Blank eeproms can be ordered from www.digikey.com
> 3. If you use eeprom, make sure that it's timing is as fast or faster then
> EPROM's
>
> -----Original Message-----
> From: Mike Rolica [mailto:mrolica at meridian-mag.com]
> Sent: Wednesday, November 10, 1999 1:02 PM
> To: Gmecm (E-mail)
> Subject: eproms
>
>
> OK, so I have a 87 165 ecm with a 27c128 eprom.  Now a couple of
questions.
> Can I huse a 27c512 eprom cause it has extra room?  What would I have to
do
> to use this one and/ or why can't I?  Second I have asked this question
> before... but can I use a eeprom instead (so I don't have to erase it uv
all
> the time) ?
> Lastly  where would I find some blank eproms ?
> Mike Rolica
> EXT. 260
>  :-)
>