[sane-devel] microtek scanmaker 4900 - update

[m. allan noah]

On 11/25/07, Adam Sulmicki <sulmicki at gmail.com> wrote:
>
> FWIW,
>
> at this point I'm fairly certain that this scanner uses SQ SCAN11 chip.
> Since no sane scanner at this point support this chip, I guess it makes the
> case pretty hopeless.
>
> data so far :
>
>  NAME:   "Microtek ScanMaker 4900" aka "USB2400 Scanner" aka "D9"
> TYPE:    MRS-2400L48U
> USB ID: 05da:30d9
>
> Circuit Board :
>         LYNX-0110 REV-A(20301)
> the ram chip :
>          EliteMT M11L416256SA-35J DZC2HBP50 0208
> the big chip (U2) :
>          MII S11 A212-0400 E2M11
>
> at this point I believe that those chips are equivalent : MII S11 aka SCAN11
> aka SQ11
>
> http://www.sq.com.tw/english/product/scanner.htm
> SCAN11
>     * Plug in USB2.0/ Embedded USB1.1
>     * IEEE1394
>     * Motor PWM
>     * 16 bits 30M A/D
>

it's never completely hopeless, you can get a trace of the windows
driver in action, and reverse engineer the protocol. its just a
question of how much time you want to spend, and how much C-fu you
have. generally, the cheaper the scanner, the more difficult the
driver is to write.

allan
-- 
"The truth is an offense, but not a sin"