(TRS-80 Model I) DISK-80 EXPANSION INTERFACE OWNERS MANUAL AND A (Catlett, VA)

(TRS-80 Model I) DISK-80 EXPANSION INTERFACE OWNERS MANUAL AND A

Local pick-up preferred (please call first) but will ship at the buyers expense.Kingston Books 15 IMG_8060Illustrated Block Diagrams Descriptions of Subassemblies and their functions External Data Separator Schematic Extra Memory Sketch Standard Unit Rear Connector Layout Ribbon Cable Connection Printer Port Version (Rear Connector Layout) Disk 80 Power Supply Layout and Schematic Disk 80 Power Supply Printer Interface Board Layout and Schematic Disk-80 Controller Board Layout and Schematic Complete Parts List Kit Assembly and Test Procedures Testing and Calibration Troubleshooting Guide Mini Disk Edge Card Connector J1 pin-out 34 Pin Parallel Port Edge Connector pin-out Disk-80 Buffered Expansion Connector J3 pin-outManufacturer MICRO MINTThe MICROMINT DISK-80 Expansion Interface is completely hardware and software compatible with the TRS-80 Model I and includes hardware enhancements for increased reliability. It attaches to the keyboard through the 40 pin TRS-BUS connector and provides the following optional capabilities 32 K RAM memory expansion Centronics compatible parallel printer port (full 8 bits) real time clock 4 drive mini-disk controller hardware data separator buffered TRS-BUS to other peripherals and power supply.The DISK-80 is divided into two circuit boards. The main board contains the memory expansion mini-disk controller. real time clock data separator and address buffers. The second board can be either the standard Power Supply Interface Board or the optional Power Supply Printer Interface.29 pages