schuster@dasys1.UUCP (Michael Schuster) (07/31/89)
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)? -- l\ /l' _ Mike Schuster ...!dasys1!schuster l \/ lll/(_ Big Electric Cat schuster@dasys1.UUCP CIS:70346,1745 l lll\(_ New York, NY USA BIX,DELPHI,GEnie:MSCHUSTER
apratt@atari.UUCP (Allan Pratt) (08/01/89)
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)? Evidently, there aren't any. It's a pain the the rear for us, too. ============================================ Opinions expressed above do not necessarily -- Allan Pratt, Atari Corp. reflect those of Atari Corp. or anyone else. ...ames!atari!apratt
hase@netmbx.UUCP (Hartmut Semken) (08/01/89)
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...)