Interesting X terminals (was: NEC SX-4B on Ebay)

I am going ot have to find the schematics... The ethernet circuit used one of the stnadard (for the time) chipsets -- 8390 ethernet controller + 8391 encoder/decoder. There's a thinwire transceiver on the board (along with an AUI connector for other types of ethernet), that uses the 8392 chip. Other (main) components on the CPU board are the 80188, 512K of DRAM, a pair of 27C512 EPROMs (one lammed 'Comm', the other 'TCP'), an 8724 microcontroller (for the keyboard interface, it also has a 9346 E2PROM hung off some of its port lines, presumably to store setup data) and a 2692 serial chip, eused for RS232 and mouse ports. The video PCB contains the 34010, a apir of 27512 EPROMs. 8 megabytes of DRAM, 1 megabyte of video RAM and an 81C176 RAMDAC. The EPROM daughterboard contains 14 more 27512s -tony