P500 aka CBM 510
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My own P500 Some pictures and infos about the machine.

P500 aka CBM 510 ?
P500The P500 is a rare machine of the CBMII series. It's a CBM600 with VIC-II (40 Col. color graphic) and two joyports. It looks like a C64. But the P500 is able to use more than one 64KB bank. The 6509 CPU uses with bank-switching 256KB and extern up to 968 KB RAM. The CPU is an upgraded MOS6502. The P500 has build in the fast IEEE488 and a RS232-Interface.

 Pictures of the board
 Scan 1RS232-Port at the bottom
 Scan 2Right at the top 24K ROM
3 Ceramik-ROMs
 ROMS V1The first P500 Ceramic ROMs
 P500 Mem-MapMemory Map

D64 Images Firmware
9012 /34 /35 /36 -01 (c)1982 CBM Basic / Kernal -01 

Under the Hood of the Commodore P500
Commodore B Series

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