This is information about the original controller for the Elektor Profiler milling machine. The controller is / was called "robby" by Colinbus.
Back to the Elektor Profiler page.
Components on the board (all soldered are SMD):
Q1 - crystal - A16.000J - 16 Mhz crystal oscillator IC1 - socketed - PLCC - labeled "7606-201 V01.10" - AM29F040B-70JD - 4 Megabit (512 K x 8-bit) CMOS Flash memory, 5.0 V only IC2 - soldered - ? - 6413003F16V, H8/3003 - this seems to be a Renesas H8/3003 microcontroller: 32-bit, sixteen 16-bit general registers, can address 16Mbyte, RAM: 512 byte IC3 - soldered - 14 pin - 66ANCYK, G4, HC20 - 74HC20 dual 4-input NAND gate? IC4 - socketed - PLCC - labeled "7594-001, V01.00" - Xilinx XC9572, PCG44AMM0641, 15C - in-system programmable CPLD IC5, IC7 - soldered - ? - ULN2803A - eight darlington arrays / octal peripheral arrays IC6, IC8 - soldered - ? - HC574 - octal tri-state noninverting D flip-flop IC9 - soldered - ? - MM74HC541WM - octal tri-state buffers IC10 - soldered - ? - 74HC245 - octal bus transceiver IC11 - soldered - TSOP2 44 - BS62LV8001EIP55 - low power CMOS SRAM - 1M x 8 bit, 55ns IC17 - soldered - ? - SP232ACN - enhanced RS-232 line drivers / receivers IC19, IC20 - soldered - ? - ULN2003A - high-voltage high-current darling transistor array
That's all I know so far. Figuring out how this controller works and improving the firmware on it doesn't look so easy.
2021-08-30: I re-created this page on my self-hosted web server.