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Jet Ace
Herní styl H. Scrolling
Multiplayer Bez multiplayeru
Rok vydání 1988
Programátor Clark Denham
Grafik Clark Denham & Jesper Lu...


Commodore PET-II

P 500

And now we come to the one and only member of the PET-II line, the P500. Part of the 1982-83 line of CBM-II ('B') machines (featuring the B5XX-B7XX computers), this was designed to be the 'P'ersonal version of their 'B'usiness computers. Fortunately, or unfortunately, the P500 never made it out of the starting gate due to a perceived market conflict with the already popular Commodore 64. Also, they were also reportedly recalled due to mismanagement by Commodore distributors and retailers.

As a computer, it resembles the low profile CBM-IIs in appearance, as well as in basic design and capabilities. The biggest difference is the existence of the VIC-II video chip (the same one in the Commodore 64) and a pair of joystick ports. A great collectors find, and I dearly hope to find time to study this machine more closely in the future.
And Speaking of those ports, here they are. From left->right, RS232, Video DIN, cassette, expansion (cartridge), Ground, Audio, Power, IEEE-488, Joystick X 2.

On the left, you'll see the three 8K ROM chips, just below ye olde power supply. That's not the original power supply, of course, but a 120V I "borrowed" from a spare B500. To the right, you'll see the IO chips, memory, and other fun stuff.

Inside, the motherboard resembles the CBM-II line very closely:

Statistics and features:

  • CSG 6509
  • 1 Mhz
  • RAM
  • 128 kilobytes, expandable to 720k
  • ROM
  • 24 kilobytes
  • P500 Kernal
  • CBM/PET Basic 4.0
  • Video
  • CSG 6569 "VIC-II"
  • 320 x 200 Hi-Resolution
  • 40 columns text
  • Palette of 16 colors
  • Sound
  • CSG 6581 "SID"
  • 3 voice stereo synthesizer/digital sound capabilities
  • Three octaves.
  • Ports
  • CSG 6551/6522
  • 2 Joystick/Mouse ports
  • Male edge-connector IEEE-488 port
  • Male edge-connector CBM Datasette port
  • Female RS232 port
  • Round DIN CBM Monitor port
  • Female edge-connector CBM-II/PET-II expansion port
  • 1 RCA audio port
  • Power and reset switches
  • Kyboard
  • Full-sized 102 key QWERTY
  • 19 key numeric keypad!
  • 4 direction cursor-pad
  • Personal Note:This machine came from the fabled George Page collection. Previously I kept a converted PAL P500, but this one is American through and through, so I decided to keep it instead.

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