Emax

Well, sort of.  I already had a machine with 8MB so I de-soldered the EEPROM from the board, burned it onto another chip and re-installed that chip into a socket soldered where the other chip was.  So far I have not heard if anyone else has tried, so if you do this prepare for it possibly having problems.  If you don't have an EEPROM burner I can supply a few burned chips... I have 4 (with sockets).

--- In emax@yahoogroups.com, sanctifiedone@... wrote:
>
> Hi, a m I understanding you right that you've installed a memory upgrade WITHOUT that extinct floppy disk? 
> 
> 
> Sorry if I didn't get everything that was going on in this thread. 
> 
> 
> I've got 8 Megs awaiting install and a missing floppy. 
> 
> 
> 
> 
> 
> ----- Original Message ----- 
> From: "Everett" <evy_newt@...> 
> To: emax@yahoogroups.com 
> Sent: Monday, November 16, 2009 10:24:31 PM GMT -05:00 US/Canada Eastern 
> Subject: [emax] Re: Memory Upgrades 
> 
> 
> 
> 
> 
> 
> I'd just like to report a success in using a chip burned with the 93C06N image I uploaded and a 93C46B chip. At first I was sweating because it gave me a memory error on bootup and only showed me 6 or 7 Megs! I just went back in and re-seated the memory expansion board and now all is well, whew! That thing is really not supported too well on the underside of those connectors so you have to push harder than you'd probably like to. 
> 
> Thanks to all that lead me in the right direction, and I hope someone else can save another EMAX with this. 
> 
> Everett 
> 
> --- In emax@yahoogroups.com , tu@ wrote: 
> > 
> > I was just wondering because I have seen many different Emax II configurations. Stereo sampling 
> > upgrades were separate from RAM upgrades and the model number does not always match with 
> > what should be inside. 
> > 
> > /Tristan 
> > 
> > On Sun, Nov 15th, 2009 at 12:32 AM, Everett <evy_newt@> wrote: 
> > 
> > > It has Stereo Sampling. I thought that was part of the upgrade? 
> > > 
> > > --- In emax@yahoogroups.com , tu@ wrote: 
> > > > 
> > > > Does your Emax II have stereo or mono sampling? 
> > > > 
> > > > /Tristan 
> > > > 
> > > > On Sat, Nov 14th, 2009 at 10:46 AM, Everett <evy_newt@> wrote: 
> > > > 
> > > > > Alright everybody, I took the plunge... have at it. I will 
> > > upload 
> > > > > the BIN to the files section. 
> > > > > 
> > > > > EMAX II it came from: 
> > > > > Model 2213 
> > > > > SN: 01200659 
> > > > > 
> > > > > Main Board: PC360 REV C 
> > > > > SN: 900428 
> > > > > 
> > > > > Upgrade Board: PC357 REV B (fully loaded) 
> > > > > 
> > > > > Hopefully someone can put this info to good use. I have ordered 
> > > a 
> > > > > few 9346s and sockets. I'd be glad to burn a few and send them 
> > > out 
> > > > > if someone needs them. 
> > > > > 
> > > > > Everett 
> > > > > 
> > > > > --- In emax@yahoogroups.com , "dwv1957" <dwv1957@> wrote: 
> > > > > > 
> > > > > > That's only partially right, there are 3 versions of the 93C46 
> > > > > > 93C46A is 8 bit 
> > > > > > 93C46B is 16 bit 
> > > > > > 93C46C is selectable 8/16 bit, and is the only one that 
> > > requires 
> > > > > the ORG pin. 
> > > > > > the 93C46B is a direct replacement for the 93C06 
> > > > > > 
> > > > > > Dave 
> > > > > > 
> > > > > > 
> > > > > > --- In emax@yahoogroups.com , "Julian" <jujulilianan@> wrote: 
> > > > > > > 
> > > > > > > oooh, I2C eeprom. 
> > > > > > > 
> > > > > > > I just looked about and found the Atmel datasheet for their 
> > > > > 93c46, and 
> > > > > > > an old microchip datasheet for their version of the 06/46. 
> > > > > > > 
> > > > > > > If this is newer atmel part is representative of other 
> > > modern 
> > > > > 93c46 
> > > > > > > parts, to make the 46 work in place of the 06 you might have 
> > > to 
> > > > > make a 
> > > > > > > change - pin 6 is now a memory organisation pin, and you'll 
> > > need 
> > > > > to pull 
> > > > > > > that to VCC in order to make this chip run in x16 memory 
> > > > > organisation. 
> > > > > > > 
> > > > > > > 
> > > > > > > apart from that - reading and writing I2C eeprom is pretty 
> > > > > trivial and 
> > > > > > > works in a standard way across all devices. if worst comes 
> > > to 
> > > > > worst you 
> > > > > > > can do it with a standard microcontroller dev board and some 
> > > off 
> > > > > the 
> > > > > > > shelf code.... 
> > > > > > > 
> > > > > > > -- 
> > > > > > > http://bleepin.com 
> > > > > > > 
> > > > > > > -- 
> > > > > > > http://www.fastmail.fm - Same, same, but different... 
> > > > > > > 
> > > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > 
> > > 
> > > 
> > > 
> > 
> 
> 
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