SIMM Memory Tips
Question: I just bought some new SIMM chips to
expand the memory on my ASR-10 today. When I went to go install
the chips, everything was where it was supposed to be. It even
recognized that the chips were installed and displayed the
appropriate number of memory blocks. BUT..! After I loaded some
instruments and went to play them, the sound came out heavily
distorted. Why this may be happening!?
It could be either bad SIMM's,
improper SIMM's, or bad installation.
- Bad SIMM's just mean they are
bad, and they need replacing.
- Each paired SIMMs should be
the same type - don't mix 70 and 80ns, don't mix 2 chip
and 8 chip, etc. This is within a PAIR - I have used 2
70ns and 2 60ns before, with no apparent problems.
- I recommend against using 2
chip SIMM's, even though Ensoniq upgraded the ASR in 1995
to be able to handle them. I've observed more than one
instance where they didn't work, and since 8-chip
varieties are fairly easily available and for the same
price, I just say go with them to avoid any hassle.
- Don't use 9-chip varieties
(parity). Very bad news.
- Make sure the jumpers are set
- Reset the SIMM's to make sure
they are completely in place.
Back to EPS and ASR-10 Knowledge Base Index