Emax

It has a few days left so hurry. Do the search.

It would be good if someone on the list could buy this so the memory install disk could be 
archived :)

Wednesday, November 26, 2008, 9:07:42 AM, you wrote:

>
It has a few days left so hurry. Do the search.

http://cgi.ebay.co.uk/EMU-EMAX-II-2-MEG-MEMORY-UPGRADE-KIT-WITH-DAUGHTERBOARD_W0QQitemZ120338337248QQcmdZViewItemQQptZKeyboards_MIDI?hash=item120338337248&_trksid=p3286.m63.l1177

If someone on the group buys this and was going to duplicate the disk, it
might be wise to post the instructions how to do the duplicating prior to
them getting it. Maybe instructions and link to any programs needed.

Regards,
Ted


[Non-text portions of this message have been removed]

That would be quite easy. The buyer needs a (WinXP/Vista) PC with 
internal floppy drive, because the disk copy can not be done on the 
Emax itself.

The buyer should use Omniflop (http://www.omniflop.com) and install 
the omniflop.sys driver before using the omniflop software. I 
recommend to use the latest version (2.2A).

Then start OmniFlop,
- click NEXT, 
- select "Read Disk" and click NEXT, 
- select the drive (A, B, ...) and flag all items except "Use slow 
step rate" and click NEXT,
- when Omniflop recognizes the possible disk formats, select 
80*2*10*512 Emax (standard) (or ...Emax (DOS standard) in the 
previous versions of OmniFlop)
- perhaps Omniflop will ask to get a free license key if this is the 
first time you use an Emax disk. Just press "Get license online", 
provide the required information on the webpage, and you'll 
immediately receive a key in your e-mail box which has to be copied & 
pasted into the field of the still open window of OmniFlop
- then the "disk read" process will start (provide a filename when 
prompted) and an 800K image will be saved to your harddisk.

This is the image we're looking for !

Note: I received an official Emu 2MB memory expansion install disk 
with one of my s/h Emax-II samplers, but I assume it has been used 
before and moreover, the last sectors of the disk seem to be corrupt 
so it's pretty unusable now...


///E-Synthesist

--- In emax@yahoogroups.com, "Ted Summers" <djtbs1@...> wrote:
>
> If someone on the group buys this and was going to duplicate the 
disk, it
> might be wise to post the instructions how to do the duplicating 
prior to

> them getting it. Maybe instructions and link to any programs needed.
> 
> Regards,
> Ted
> 
> 
> [Non-text portions of this message have been removed]
>

Perhaps also- buyer should use the COPY not the original to do the  
upgrade, then there would always be an unused original as  
source....just a thought.

Regards,
Ted


On Nov 26, 2008, at 1:52 PM, esynthesist wrote:

That would be quite easy. The buyer needs a (WinXP/Vista) PC with
internal floppy drive, because the disk copy can not be done on the
Emax itself.

The buyer should use Omniflop (http://www.omniflop.com) and install
the omniflop.sys driver before using the omniflop software. I
recommend to use the latest version (2.2A).

Then start OmniFlop,
- click NEXT,
- select "Read Disk" and click NEXT,
- select the drive (A, B, ...) and flag all items except "Use slow
step rate" and click NEXT,
- when Omniflop recognizes the possible disk formats, select
80*2*10*512 Emax (standard) (or ...Emax (DOS standard) in the
previous versions of OmniFlop)
- perhaps Omniflop will ask to get a free license key if this is the
first time you use an Emax disk. Just press "Get license online",
provide the required information on the webpage, and you'll
immediately receive a key in your e-mail box which has to be copied &
pasted into the field of the still open window of OmniFlop
- then the "disk read" process will start (provide a filename when
prompted) and an 800K image will be saved to your harddisk.

This is the image we're looking for !

Note: I received an official Emu 2MB memory expansion install disk
with one of my s/h Emax-II samplers, but I assume it has been used
before and moreover, the last sectors of the disk seem to be corrupt
so it's pretty unusable now...

///E-Synthesist

--- In emax@yahoogroups.com, "Ted Summers" <djtbs1@...> wrote:
 >
 > If someone on the group buys this and was going to duplicate the
disk, it
 > might be wise to post the instructions how to do the duplicating
prior to
 > them getting it. Maybe instructions and link to any programs needed.
 >
 > Regards,
 > Ted
 >
 >
 > [Non-text portions of this message have been removed]
 >






[Non-text portions of this message have been removed]

It looks like some bits are set in the Emax II EEPROM by these install disks. When the Emax II 
boots it appears to check the EEPROM and only allows the use of stereo sampling and >2MB of 
RAM if it finds the appropriate codes. One of my Emax II samplers, with 8MB and stereo sampling, 
sometimes fails to get the right codes on bootup and operates as a 2MB machine with mono 
sampling. So it looks like directly modifying the EEPROM data could be another solution to allow 
expansion of the memory. 

I believe there is even a facility to reprogram the EEPROM from the diganostics menu #7 "Adjust 
features". I have tried this out briefly but if anyone wants to do some OS (or firmware) hacking 
then this would be a worthwhile place to expend your efforts. At some point I will try capturing the 
signals going to the EEPROM with a logic analyzer to see what is being read. 

From my understanding, the EEPROM also stores the calibrations for the pitch wheel, mod wheel, 
volume slider, data entry slider, foot pedal, footswitch polarity, boot drive, headroom and LCD 
contrast. There was also a plan to add a user access PIN code but it appears that was never 
implemented.

On the original Emax I gather the EEPROM stores the filter calibrations as well as the code allowing 
access to the SE functions.

/Tristan

Thursday, November 27, 2008, 5:52:57 AM, you wrote:

>
That would be quite easy. The buyer needs a (WinXP/Vista) PC with 
internal floppy drive, because the disk copy can not be done on the 
Emax itself.

The buyer should use Omniflop (http://www.omniflop.com) and install 
the omniflop.sys driver before using the omniflop software. I 
recommend to use the latest version (2.2A).

Then start OmniFlop,
- click NEXT, 
- select "Read Disk" and click NEXT, 
- select the drive (A, B, ...) and flag all items except "Use slow 
step rate" and click NEXT,
- when Omniflop recognizes the possible disk formats, select 
80*2*10*512 Emax (standard) (or ...Emax (DOS standard) in the 
previous versions of OmniFlop)
- perhaps Omniflop will ask to get a free license key if this is the 
first time you use an Emax disk. Just press "Get license online", 
provide the required information on the webpage, and you'll 
immediately receive a key in your e-mail box which has to be copied & 
pasted into the field of the still open window of OmniFlop
- then the "disk read" process will start (provide a filename when 
prompted) and an 800K image will be saved to your harddisk.

This is the image we're looking for !

Note: I received an official Emu 2MB memory expansion install disk 
with one of my s/h Emax-II samplers, but I assume it has been used 
before and moreover, the last sectors of the disk seem to be corrupt 
so it's pretty unusable now...

///E-Synthesist

--- In emax@yahoogroups.com, "Ted Summers" <djtbs1@...> wrote:
>
> If someone on the group buys this and was going to duplicate the 
disk, it
> might be wise to post the instructions how to do the duplicating 
prior to

> them getting it. Maybe instructions and link to any programs needed.
> 
> Regards,
> Ted
> 
> 
> [Non-text portions of this message have been removed]
>

On the original Emax, calibrations are held in a 9306 EPROM )not the  
2732/ or 2764.

I cannot confirm of course where the SE bit is set. That is not  
discussed in the service manual.

Regards,
Ted


On Nov 28, 2008, at 2:32 AM, tu@... wrote:

It looks like some bits are set in the Emax II EEPROM by these install  
disks. When the Emax II
boots it appears to check the EEPROM and only allows the use of stereo  
sampling and >2MB of
RAM if it finds the appropriate codes. One of my Emax II samplers,  
with 8MB and stereo sampling,
sometimes fails to get the right codes on bootup and operates as a 2MB  
machine with mono
sampling. So it looks like directly modifying the EEPROM data could be  
another solution to allow
expansion of the memory.

I believe there is even a facility to reprogram the EEPROM from the  
diganostics menu #7 "Adjust
features". I have tried this out briefly but if anyone wants to do  
some OS (or firmware) hacking
then this would be a worthwhile place to expend your efforts. At some  
point I will try capturing the
signals going to the EEPROM with a logic analyzer to see what is being  
read.

 From my understanding, the EEPROM also stores the calibrations for  
the pitch wheel, mod wheel,
volume slider, data entry slider, foot pedal, footswitch polarity,  
boot drive, headroom and LCD
contrast. There was also a plan to add a user access PIN code but it  
appears that was never
implemented.

On the original Emax I gather the EEPROM stores the filter  
calibrations as well as the code allowing
access to the SE functions.

/Tristan

Thursday, November 27, 2008, 5:52:57 AM, you wrote:

 >
That would be quite easy. The buyer needs a (WinXP/Vista) PC with
internal floppy drive, because the disk copy can not be done on the
Emax itself.

The buyer should use Omniflop (http://www.omniflop.com) and install
the omniflop.sys driver before using the omniflop software. I
recommend to use the latest version (2.2A).

Then start OmniFlop,
- click NEXT,
- select "Read Disk" and click NEXT,
- select the drive (A, B, ...) and flag all items except "Use slow
step rate" and click NEXT,
- when Omniflop recognizes the possible disk formats, select
80*2*10*512 Emax (standard) (or ...Emax (DOS standard) in the
previous versions of OmniFlop)
- perhaps Omniflop will ask to get a free license key if this is the
first time you use an Emax disk. Just press "Get license online",
provide the required information on the webpage, and you'll
immediately receive a key in your e-mail box which has to be copied &
pasted into the field of the still open window of OmniFlop
- then the "disk read" process will start (provide a filename when
prompted) and an 800K image will be saved to your harddisk.

This is the image we're looking for !

Note: I received an official Emu 2MB memory expansion install disk
with one of my s/h Emax-II samplers, but I assume it has been used
before and moreover, the last sectors of the disk seem to be corrupt
so it's pretty unusable now...

///E-Synthesist

--- In emax@yahoogroups.com, "Ted Summers" <djtbs1@...> wrote:
 >
 > If someone on the group buys this and was going to duplicate the
disk, it
 > might be wise to post the instructions how to do the duplicating
prior to
 > them getting it. Maybe instructions and link to any programs needed.
 >
 > Regards,
 > Ted
 >
 >
 > [Non-text portions of this message have been removed]
 >






[Non-text portions of this message have been removed]

On my Emax1 se, i can boot with the original os also.
so i don't think it's in the eprom - and a eprom has to burned from new, as 
far i know.

( burn once read many - BORM ?? )
:)

Michael
DK


At 29-11-2008 02:28, you wrote:

>On the original Emax I gather the EEPROM stores the filter
>calibrations as well as the code allowing
>access to the SE functions.

Actually an EPROM can be burned many times but must be erased between  
times in a UV Eraser if you wish to re-program the IC with a new  
program.

There are OTP (One-Time-Programmable) EPROMs, but usually have to buy  
those in very large qty as you are doing "production run".

If you were merely changing a few bits (like the SE upgrade might be  
doing), then you would not necessarily have to reprogram the whole  
EEPROM, just change those few bits.

Regards,
Ted


On Nov 28, 2008, at 8:33 AM, Michael Wisbech wrote:

On my Emax1 se, i can boot with the original os also.
so i don't think it's in the eprom - and a eprom has to burned from  
new, as
far i know.

( burn once read many - BORM ?? )
:)

Michael
DK

At 29-11-2008 02:28, you wrote:

 >On the original Emax I gather the EEPROM stores the filter
 >calibrations as well as the code allowing
 >access to the SE functions.






[Non-text portions of this message have been removed]

ok
  thanks


At 28-11-2008 21:11, you wrote:

>Actually an EPROM can be burned many times but must be erased between
>times in a UV Eraser if you wish to re-program the IC with a new
>program.
>
>There are OTP (One-Time-Programmable) EPROMs, but usually have to buy
>those in very large qty as you are doing "production run".
>
>If you were merely changing a few bits (like the SE upgrade might be
>doing), then you would not necessarily have to reprogram the whole
>EEPROM, just change those few bits.
>
>Regards,
>Ted

$56.00 and reserve not met ???


On Nov 26, 2008, at 9:07 AM, Michael Wisbech wrote:

> http://cgi.ebay.co.uk/EMU-EMAX-II-2-MEG-MEMORY-UPGRADE-KIT-WITH- 
> DAUGHTERBOARD_W0QQitemZ120338337248QQcmdZViewItemQQptZKeyboards_MIDI?h 
> ash=item120338337248&_trksid=p3286.m63.l1177
>
>
> 



[Non-text portions of this message have been removed]