emusonacid! legacy

aerodrink wrote:kalide, TSR : this is great news !
Special thank to TSR who tested for us

seconded

Grounding pin 34 looks good. It appears to be fine for this interface from what I've researched eg. a good review of how these kinds of issues affected past computers e.g. migrating from old 5.25" and 8" drives to 3.5" drives.

http://nemesis.lonestar.org/computers/t ... pyfix.html

No warranty of course, but I'm going to use this with my USB-IDE caddy so I can ditch the floppy entirely.

M

Although this connection between 33 and 34 serves the purpose,
I think we still need some more definite knowledge.

None of us wants to kill his/her E-MU!

Anyway, considering it's age, the E-MU actually allows for some
comprehensive modifications. Besides that good compatibilty with
hard drives, and the working CF card on the SCSI connection, I also
like the modular design very much - one thing DELETE already took
advantage of, by just using longer cables to separate the control
surface from the rest. For example, to my knowledge you can disconnect
the front panel buttons separately from the screen and the data wheel,
which is interesting for my if using only a POS keyboard.

I'm still thinking about putting the Ultra together with the Command
Station into one self made housing and using the PREH POS keyboard
for total control of the sampler.

TSR

TSR wrote:Although this connection between 33 and 34 serves the purpose,
I think we still need some more definite knowledge.

i tested it too, works like a charm. in fact it boots even faster now than before when i had the floppy installed.

To those who have their emu's open - what are the IC's that pin 34 connects to ? Does it got to a small buffer ? are there any pull downs, pull up resistor packs?

A photo would be best (use the macro option on your cam for close ups :-)

it would be easy to add a pull down resistor if it turns our the buffer that reads pin 34 requires it.

My two emus are well racked at present so I don't want to pull them out for now....

Also - while you are at it, what model floppy drive is in the Emu - that will tell us what interface it uses (legacy Shugart style or PC/AT style).

M

P.S. for anyone looking for an understanding of pull ups and pull downs, here's a great tutorial that's nice and simple:

http://www.seattlerobotics.org/encoder/ ... asics.html

note that in most cases we won't need a pull down resistor - its not common and most logic inputs can be directly tied to ground. However in this case, most floppy drives have open collector TTL outputs on RDY - so unless we know what the input circuit is on the Emu, its unclear if we need a pull down.

No harm at all in using one (e.g. 10k resistor) if you want to try :)

Got my E-MU back in the rack, too. But here is some information
about the floppy drive.

ALPS ELECTRONIC; DF354H(121G); S/N 8P179640; 06 - 48


TSR


Add: I forgot to mention that this floppy drive is not the original one.
It's a 9,- Euro replacement from the computer store. Once again, it's
nice that a lot of standard parts have found their way into the E-MU.

I remember owning the otherwise great AKAI S3200XL which was very
restricted concerning data saving. The restriction of only
50MB per partitioin hard drive was one of the most annoying things.

FAT support of EOS4.7 really opens doors!

TSR wrote:I'm still thinking about putting the Ultra together with the Command
Station into one self made housing and using the PREH POS keyboard
for total control of the sampler.

I used to have my sampler rackmounted in a 6U EMS polycarbonate case, with the Command Station mounted using the slanted top mounting kit. These cases are lightweight but strong, and the result is very similiar to what you are proposing, but with minimal effort and zero modification.