My Reply follows quote. On 02/08/2003 00:10 [EMAIL PROTECTED] said:
--- Ken <[EMAIL PROTECTED]> wrote:
The other card is still a bit of a puzzle. It sort of looks like a modem, in that it has two "phone jack sized" outlets on the back plane, one of which has a black plug installed. Very few components on the card and the>> only nomenclature seems to be "Tut Nubus Assy >> #20194." None of thetransformer type things I am used to seeing on a modem card however. Any clues?
Any numbers and/or names on any of the chips?-------------- There are five integrated circuits (I think) on the board, one 20 MHz oscillator, a bunch of surface mounted resistors and capacitors, a few "regular" capacitors and resistors and a "thing" about a half inch high, an inch wide and 1/4 inch thick that appears to be dipped in some sort of black potting compound. This thing has DPS0502B DEL 9350 on it.
The largest integrated circuit chip: SSI SSI Nubus A1 C9406 TBA61281.1 TAIWAN P-017
A socketed IC with a paper label: TUT NB256 V1.0 00C023-0002D6
Two of these: HYUNDAI HY626AL-J-70
Memory
The last two chips are in the circuit between the largest IC and the "ports":
First: THB16J15 DEL 9339
This sounds like a transformer.
Second: P9336 DP8392CN
Google search on this last one reveals it to be a Coaxial Transceiver for ThinNet (10Base2).
Before 10BaseT was introduced some people were putting 10Base2 through a transformer and connecting it with twisted pair and phone connectors. I'm guessing that this board was built to do that directly without the adapters others used.
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