Re: apple II roms and eproms

["Bill Garber" <willy46pa@comcast DOT net>]

"Patrick Schaefer" <PSchaefer@epost.de> wrote in message
40DD86F3.EE7EB2C5@epost.de">news:40DD86F3.EE7EB2C5@epost.de...
: David Wilson schrieb:
:
: > 2) There are two versions of 128Kx8 EPROMs. One has /OE on
: > pin 24 and is not usable in the IIgs. The other has A16 on
: > pin 24 and /OE is on pin 2. Compatible EPROMs are:
: >
: > Hitachi HN27C301G
: > Toshiba TC571001D
:
: My EPROMmer calls them the x301 type (the classic pinout is
called
: x101). Alternatives are NEC 271000 and Fujitsu 271000 (not
271001).

The Intel 27C100 is also supposed to be compatible
with the IIgs 32-pin Eprom socket. I have 20 of them
coming in and I'll be able to tell you for sure once
they arrive. I have several ROM03 motherboards that
need the ROM updated and if they work I will be able
to make ROMs for others with the old 342-0749 ROM, or
offer a blank 27C100 to those who wish to make their
own ROM modifications.

Bill @ GarberStreet Enterprizez };-)
Web Site - http://garberstreet.netfirms.com
Email - willy46pa @ comcast DOT net
Change DOT to a dot to contact me



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