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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!darwin.sura.net!spool.mu.edu!yale.edu!yale!gumby!news.cs.andrews.edu!zds-oem!easton
- From: easton@zds-oem.zds.com (Jeff Easton)
- Subject: Re: help needed !!!! (2.5 inch ---> 3.5 inch)
- Organization: Zenith Data Systems, OEM Systems Engineering
- Date: Mon, 21 Dec 1992 17:07:48 GMT
- Message-ID: <1992Dec21.170748.17258@zds-oem.zds.com>
- References: <ehrmann.724941920@tschil> <1992Dec21.150052.6546@prime.mdata.fi>
- Lines: 31
-
- In article <1992Dec21.150052.6546@prime.mdata.fi> ppihkala@mits.mdata.fi (Petri Pihkala) writes:
- >In article <ehrmann.724941920@tschil> ehrmann@tschil.informatik.rwth-aachen.de (Guido Ehrmann) writes:
- >>I need some help with my amiga 1200 !
- >
- >>or can anybody tell me the pin-setting of the 2.5 inch plug !!!!!!!!!
- >>(the one from the 3.5 inch i know !)
- >
- > As far as I know their pinning is identical at pins 1-40 and pins 41-44 just
- >replace that IBM-style drivepower connector. According to A600 schematics 41 &
- >42 are connected to Vcc (+5V), 43 is ground and 44 is connected to Vcc via 4.7
- >kOhm resistor.
- > P.S. Does anybody know what this block in A600 is as it contains two 28F20's
- >and 74F139 (U37), is labeled FLASH MEMORY and has text 'FLASH AND U37 IS
- >OPTIONAL'?
-
- Interesting! I wonder if this is in the A1200 as well?
-
- The Intel Memory Databook lists the 28F020 as a 256k x 8 flash memory.
- I wonder if the C= Engineers were thinking of Flash for the kickstart ROM,
- thus allowing flash updates from disk to future versions? Most likely
- the cost of Flash parts killed the idea, and they went back to the same
- old Masked ROM. Remember, this is a low cost machine...
-
- >ppihkala@mits.mdata.fi
-
- --
- ___ ___ Jeff Easton easton@zds-oem.zds.com
- (__ (__ Zenith Data Systems j.easton@mi04.zds.com
- ___) ___) Saint Joseph, Mich. easton@andrews.edu
- Monte Carlo Z-LS/20 - Choice of a quiet generation
-
-