Path: utzoo!attcan!uunet!steinmetz!davidsen
From: davidsen@steinmetz.ge.com (William E. Davidsen Jr)
Newsgroups: comp.sys.ibm.pc
Subject: Re: What kind of ROM? (WAS: IBM ROM BIOS upgrade kit
Keywords: ibm pc rom bios upgrade kit
Message-ID: <11872@steinmetz.ge.com>
Date: 16 Aug 88 18:52:49 GMT
References: <927@orion.cf.uci.edu> <5962@dasys1.UUCP>
Reply-To: davidsen@crdos1.UUCP (bill davidsen)
Distribution: na
Organization: General Electric CRD, Schenectady, NY
Lines: 22

In article <5962@dasys1.UUCP> schuster@dasys1.UUCP (Michael Schuster) writes:

| Related subject: does anyone know what kind of ROM was used in the
| original IBM PC (not XT) of which this is a replacement? By this
| I mean, not the IBM part number but the generic ROM type. Put another
| way, what type of BLANK (EP)ROM could be burned and put into that socket?
| 2764? 2532? 

  First, my old tech ref says the ROM is 8k x 8, so I think that's 2764.
The part I'm not sure about is if there are two address pins flipped on
the ROM, such that it can be read in order only in a modified socket,
although it could be duplicated in a standard PROM burner.

  I seem to remember seeing a socket and plug with a lot of wires
connecting them, which switched the two pins back. I am not sure about
this, so don't waste your electrons flaming me if that's not the way it
is.

-- 
	bill davidsen		(wedu@ge-crd.arpa)
  {uunet | philabs | seismo}!steinmetz!crdos1!davidsen
"Stupidity, like virtue, is its own reward" -me