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