mitsubishi - Al Kossow's Bitsavers

MITSUBISHI MICROCOMPUTERSPC9000CROSS ASSEMBLER MACHINEDESCRIPTIONThe PC9000 is a cross assembler mach ine. It is capable ofconverting programs for the Mitsubishisingle-chip microcomputerswritten in assembler language to machine language.In addition, it can perform such debugging functionsas disassembly and act as an EPROM writer.FEATURES• Input of the source program from the keyboard• An efficient screen· editor allows editing of sourceprograms• Program dump and load to the mini-floppy disk• Object data write/read for 2708, 2716 and 2732EPROM devices• Listing using a Centronix-compatible printer is possible• Data transmission is possible to the PC4000 debuggingmachine• Usable with all types of Mitsubishi single-chip microcomputers• Compact, desk-top designAPPLICATIONSoftware development support for Mitsubishi single-chipmicrocomputers.FUNCTIONThe PC9000 as shown in the configuration diagram consistsof the following hardware(1) Control CPU and bootstrap ROM(2) 48K byte RAM(3) 2K byte display screen RAM(4) 9-inch CRT display circuit(5) EPROM writer ci'rcuit(6) ASCII keyboard(7) Hardcopy output by means of an internal mini-printercircuit or an external printer interface circuit(8) Floppy disk controller (two mini floppy disk drives)(9) Parallel input/output interface circuit (two lines)(10) Power supplyAn M5L8085AP is used as the control CPU. The'keyboard, CRT, mini-floppy disk drives, and printer interfacesare connected by means of a bus line. The keyboard isused for input of commands to the monitor and sourceprogram data verification. The 9-inch green CRT displayscreen is capable of displaying 24 rines of 80 characters. Asa printer a 20 column mini-printer is built-in to the PC9000in addition to the ability to use an 80 column printerhaving Centronix compatibility via an interface which isavailable. The built-in mini-printer may be used to outputII• MITSUBISHI"ELECTRIC7-7