MP9120A IDE CDR-W - Page
Ricoh is the second company to introduce anti-coaster technology for CDR-W
drives after Sanyo's BURN-Proof technology. Ricoh's proposal comes under the
interesting name "JustLink", which promises to eliminate coasters
caused from buffer under-runs and improves the recording quality over BURN-Proof
technology. The Ricoh MP9120A is the first model to ever implement "JustLink"
technology. But this isn't the only strong point of Ricoh MP9120A. The 8x DVD-Rom
reading speed added to the MP9120A model, is a very attractive feature and makes
combo drives (CDR-W+DVD-ROM) an interesting proposal for users. Let us now see
what is the so-called "JustLink"!
effectively performs when writing data directly from CD-ROM, writing data at
high speed and when other operations are being performed during writing. JustLink
also makes trouble-free data writing via network possible. The link section
from Ricoh JustLink, being extrermely small at less than 2 µm, doesn't
affect reading quality. This is actually why this technology has been called
'JustLink' which has the scope and flexibility to cope with whatever writing
How it works?
Link works on the following principle:
- The amount data accumulated in the buffer memory is always monitored
- If, for some reason, the data transfer speed from the computer falls below
the writing speed, the amount of data accumulated in the buffer memory falls.
- When the amount of data in the buffer memory falls below a certain level,
and the possibility of a buffer underrun error is predicted if writing continues,
writing is intentionally suspended for the time being.
- During the time that writing is suspended, data transferred from the computer
accumulates in the buffer memory.
- When enough data has accumulated, writing is resumed from the point directly
after the point where it was suspended, and monitoring of the amount of data
in the buffer memory is recommenced.
What is the best anti-coaster technology..BURN-Proof or JustLink?
Both technologies are very similar and their main difference is
the gap length. The first generation of BURN-Proof enabled drives had 40 µm
On the other hand "JustLink" has much lower gap length
Sanyo reacted soon and released an improved BURN-Proof technology,
which lowered the gap length to 2-5µm. As you can figure out "JustLink"
seems still better in absolute technical terms. The truth is that as long as
the length gap stays below 100µm, from the last successful sector to the
new sector, there won't be any noticeable fault to the user or won't affect
the data at all. You can read more about "JustLink" at Ricoh
The package supplied was the retail Europe version. This included: The drive
itself, a set-up guide, 1 blank CD-R, 1 blank High Speed RW, audio cables and
mounting screws. The software supplied with the MP9120A was Nero 188.8.131.52, Ahead's
InCD v1.66 and WinDVD 2000 v2.3 for DVD playback and a region changer selector.
We used the latest Nero 184.108.40.206 version for most of the tests along with
Prassi abCD (packet writing). In the process of the tests we found a small bug
with Nero and MP9120A. After contacting Ahead we were supplied with a reg
patch which solved the problem. In addition, there is a small issue with
PadusDJ v3.00.750, which supports the drive but not the "JustLink"
technology. However you can activate the "JustLink" simple by adding
the following 2 lines in the PFC.INI file:
[RICOH DVD/CDRW MP9120]
FlagsWrite = 20000000h
CDR-W drives are simple to install. Just decide what the drive should be (master
or slave), set the appropriate jumper and start! After booting, the CDR-W identified
itself as "Ricoh DVD/CDRW MP9120A". We unchecked the Auto Insert notification,
checked DMA and rebooted. The drive was an August 2000 model with firmware revision
Celeron II 566 over clocked to 850 MHz
128MB SDRAM PC 133
WD 18GB UDMA 66
Quantum Fireball EX 6.4 GB UDMA 33
DAWI 2975 - PCI (ULTRA) SCSI Host Adapter
ATI AIW 128
PlexWriter PX-W1210A firmware v1.07 (TLA#000)
PlexWriter PX-W1210S firmware v1.00 (TLA#000)
Ricoh MP7120A firmware v1.20
Ricoh MP9120A firmware v1.20