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helder7 wrote:A new (regional) version of the fx9860g series called "FX-9860GII S" is already being sold in some online stores, destined to NY Schools.
The pink fx-9860GII comes with OS 2.02.0201
The fx-9860GII s comes with OS 2.03.5300
PCB revision: 001V02 with Macronix MX29LV320EBTI-70G
Internal model type: GY498A (subtype 0x99)
OS 2.03 doesn't support natural output like "3pi" or "4sqrt(2)".
Also, the conversion menu is missing ([OPTN]/[F6]/[F1]).
But they added the Prizm OS 1.04 automatic parentheses feature: 2:2(2+2) -> 2:(2(2+2))
Now we know why there were updated Geometry and Physium add-ins in early 2013.
Let's update our list of country-specific OS versions:
y = 0 : n/a
y = 1 : Australia
y = 2 : France
y = 3 : USA and Canada
y = 4 : China
y = 5 : Singapore
I could confirm that Prizm OS 1.04.4200 and 2.00.4200 are Chinese versions.
The internal model type is LY755E (subtype 0xA5) on fx-CG20 CN.
Btw, subtype 0x55 are French Prizm OSes: 1.04.2200 and 2.00.2200
Subtype 0x55 is not used by Casio. It seems France doesn't require special Graph keyboard layouts anymore (Asn, Acs, Atn, x10^x).
The edu.casio.com fx-9860G OS 2.01 update states:
"Not approved for Singapore A level"
See also: https://www.seab.gov.sg/content/calcula ... lators.pdf
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