PSE Computers Disk Controller

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An almost 1:1 clone of the original Dragon DOS disk controller, by PSE Computers.

Pictures

Parts List

PSE Computers Disk Controller Board IC list (with Datasheets)

Part Number Description Datasheet
2764 8Kb EPROM (pdf)
SN7416N Hex inverter buffers/drivers with open-collector high-voltage outputs (pdf)
SN7417N Hex buffers/drivers with open-collector high-voltage outputs (pdf)
SN74LS00N Quad 2-input positive-NAND gates (pdf)
SN74LS04N Hex inverters (pdf)
SN74LS74AN DUAL D-TYPE POSITIVE EDGE-TRIGGERED FLIP-FLOPS WITH PRESET AND CLEAR (pdf)
SN74LS139N DUAL 1-OF-4 DECODER/DEMULTIPLEXER (pdf)
SN74LS174N Hex/Quadruple D-Type Flip-Flops With Clear (pdf)
WD2797PL-02 Floppy Disk Formatter/Controller (pdf)