Article View: comp.sys.atari.st
Article #2484Re: WHAT EPROMS WORK IN A 1040ST?
From: Hartmut Semken
Date: Wed, 19 Jul 1989 15:56
Date: Wed, 19 Jul 1989 15:56
20 lines
1303 bytes
1303 bytes
In article <699@lzaz.ATT.COM> hcj@lzaz.ATT.COM (HC Johnson) writes: >I copied my TOS ROMS to EPROM (Intel 256-2 parts). These are rated at 200 ns. >The result almost works but is 'different'. >Any one looked into the required speed for Eproms? 200 nanoseconds schould work fine (the 8 MHz 68000 isn't that fast...). Slower EPROMs gain speed by controlling them via -OE instead of -CE. The access time is rated after giving power to the chip (-CE); grounding -CE and controlling the EPROMS outputs (-OE output enable) speeds 200 ns EPROMS to less than 80 ns... (a 16 MHz 68000 would have difficulties to keep up with that). hase -- Hartmut Semken, Lupsteiner Weg 67, 1000 Berlin 37 hase@netmbx.UUCP If there is something more important than my Ego, I want it caught and shot. Now! (Harmund Senken)
Technical Details
Message-ID:
<3097@netmbx.UUCP>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!bionet!apple!sun-barr!cs.utexas.edu!uunet!mcvax!unido!tub!tmpmbx!netmbx!haseReferences:
<699@lzaz.ATT.COM>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!bionet!apple!sun-barr!cs.utexas.edu!uunet!mcvax!unido!tub!tmpmbx!netmbx!hase From: hase@netmbx.UUCP (Hartmut Semken) Newsgroups: comp.sys.atari.st Subject: Re: WHAT EPROMS WORK IN A 1040ST? Message-ID: <3097@netmbx.UUCP> Date: 19 Jul 89 15:56:19 GMT References: <699@lzaz.ATT.COM> Reply-To: hase@netmbx.UUCP (Hartmut Semken) Organization: netmbx Public Access Unix, Berlin, West Germany Lines: 20