Commodore 710 “Porsche Design” with Commodore 8250LP, dual floppy disk drive, displayed in my office.
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![Commodore 710, Commodore PET, museo, esposizione, ufficio. CPU: MOS 6509 a 2MHz (Zilog Z80 & Intel 8088 opzionali). ROM: 28 KB. RAM: 128 KB. Video: modalità testo 80 caratteri x 25 righe, monocromatico. Audio: MOS SID (stesso del Commodore 64, MOS 6581). Tastiera: 94 tasti, con tastierino numerico e tasti funzione programmabili. Software incluso in ROM: BASIC 4.0. Floppy disk drive: esteri (interni opzionali). Porte di espansione: - 1 IEEE-488 - 1 Seriale RS-232 - 1 Expansion port (per cartucce) - 1 Audio - 1 Porta per Datassette (lettore di cassette). Alimentazione: 220-240Vac, 130W, alimentatore switching interno.](https://www.valoroso.it/wp-content/uploads/Commodore-710-Commodore-PET-in-office-showroom-museum.jpg)
Although this retro computer is often referred to as the Commodore 710 “Porsche Design”, in reality it seems that it was never designed by Porsche Design of Stuttgart.
The Commodore 710 is part of the Commodore CBM-II series: a line of 8-bit personal computers manufactured by Commodore Business Machines (CBM) between 1982 and 1984.
Technical characteristics of the Commodore 710
CPU: MOS 6509 a 2MHz (Zilog Z80 & Intel 8088 opzionali)
ROM: 28 KB
![](https://www.valoroso.it/wp-content/uploads/PCBWay-eng.jpg)
RAM: 128 KB
Video: Text mode 80 characters x 25 lines, monochrome
Audio: MOS SID (same as Commodore 64, MOS 6581)
Keyboard: 94 keys, with numeric keypad and programmable function keys
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Software incluso in ROM: BASIC 4.0
Floppy disk drive: foreign (internal optional)
![Commodore 710, Commodore PET Amedeo Valoroso ValorosoIT](https://www.valoroso.it/wp-content/uploads/Commodore-710-Commodore-PET-Amedeo-Valoroso-ValorosoIT.jpg)
Expansion ports:
- 1 IEEE-488
- 1 Serial RS-232
- 1 Expansion port (per cartucce)
- 1 Audio
- 1 Datassette port (cassette player)
- Dimensions: 46 (width) x 59.5 (depth) x 46 (height) cm
- Power supply: 220-240Vac, 130W, internal switching power supply
![Commodore 710, rear connectors, rs232 serial, power supply, IEEE-488, datassette](https://www.valoroso.it/wp-content/uploads/Commodore-710-connettori-posteriori-seriale-rs232-alimentazione-IEEE-488-datassette.jpg)
Papers
1. Commodore CBM II, 500 600 700, user guide
![](https://www.valoroso.it/wp-content/uploads/PCBX-banner-ENG.jpg)
2. Commodore CBM II, 700, reference manual
3. Commodore CBM II, schematics