Article View: comp.sys.atari.st
Article #2759Re: Mega ST EPROMS
From: Hartmut Semken
Date: Tue, 01 Aug 1989 14:43
Date: Tue, 01 Aug 1989 14:43
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1364 bytes
In article <10407@dasys1.UUCP> schuster@dasys1.UUCP (Michael Schuster) writes: >What are the EPROM equivalents for the 1 megabit ROMS used in the >Mega ST (the ones with two of the six sockets filled). The ROMS say >"23C1024", but 27C1024 EPROMS have 32 pins, not 28 as these do. >Are these page-wide ROMS? (27011)? There are no equivalents. The ROM's are not page-mode ROM's (011 or 513 style). They just use the -OE line of the xx512 ROMs as additional adress line. They have no "spare pin" for Vpp left... The Mega ST can be modified to use 6*27256 (older Megas have 6 sockets and the jumpers necessary). hase -- Hartmut Semken, Lupsteiner Weg 67, 1000 Berlin 37 hase@netmbx.UUCP Dennis had stepped up into the top seat whet its founder had died of a lethal overdose of brick wall, taken while under the influence of a Ferrari and a bottle of tequila. (Douglas Adams; the long dark teatime...)
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!cs.utexas.edu!uunet!mcvax!unido!tub!tmpmbx!netmbx!haseReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!cs.utexas.edu!uunet!mcvax!unido!tub!tmpmbx!netmbx!hase From: hase@netmbx.UUCP (Hartmut Semken) Newsgroups: comp.sys.atari.st Subject: Re: Mega ST EPROMS Message-ID: <3206@netmbx.UUCP> Date: 1 Aug 89 14:43:57 GMT References: <10407@dasys1.UUCP> Reply-To: hase@netmbx.UUCP (Hartmut Semken) Organization: netmbx Public Access Unix, Berlin, West Germany Lines: 21